??xml version="1.0" encoding="utf-8" standalone="yes"?>久久这里只有精品久久,久久久久久亚洲精品无码,久久免费小视频http://m.shnenglu.com/cpunion/category/48.htmlAS/C/C++/D/Java/JS/Python/Rubyzh-cnMon, 26 May 2008 15:24:30 GMTMon, 26 May 2008 15:24:30 GMT60搬家http://m.shnenglu.com/cpunion/archive/2006/10/09/13499.htmlqieziqieziMon, 09 Oct 2006 14:33:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/10/09/13499.htmlhttp://m.shnenglu.com/cpunion/comments/13499.htmlhttp://m.shnenglu.com/cpunion/archive/2006/10/09/13499.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/13499.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/13499.html

qiezi 2006-10-09 22:33 发表评论
]]>D落文本渲染引擎http://m.shnenglu.com/cpunion/archive/2006/10/09/13484.htmlqieziqieziMon, 09 Oct 2006 03:44:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/10/09/13484.htmlhttp://m.shnenglu.com/cpunion/comments/13484.htmlhttp://m.shnenglu.com/cpunion/archive/2006/10/09/13484.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/13484.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/13484.html
有了freetype实现底层字体渲染Q我只需要处理一些布局Ҏ卛_Q其中要实现的有以下几点Q?br />
1、英、中字体
很多中文字体中的英文字体都比较难看，所以在X的字体配|中讄了一个字体顺序。我也可以学学，传递一个字体列表，拿到一个字W时Q按序从字体列表中查询Q查询不到时查下一个字体，q样可以实现英、中使用不同字体了?br />
2、分?br />D落分行要考虑C、英文不同的分割方式Q还有标点符P某引h点符号不能在行尾Q比如?lt;{）Q某些标点不能在行首Q比如?gt;Q，某些标点不能分割Q比如破折号Q，所以实际上要有一个分割算法，把段落分成一个个的标讎ͼ汉字直接分割Q英文按I格分割Q不能在行首的标点就分到前面单词里，不能在行分在后面的单词里?br />
3、对?br />寚w方式有左、中、右、两?Full Justification)q几U方式，目前大部分开源渲染库都不支持两端寚wQ这也是我要自己实现的主要原因。左、中、右只要计算Z行的所有字W宽度，再计出左边距即可。两端对齐则需要计每个单词的间距?br />
4、段首羃q?br /> 原来设想在分D后直接加上全角I格Q不惌个空格在转成UNICODE~码Ӟ它的~码是\u0000Q不能获取到全角I格的宽度。于是把它设成字体高度，看了一下效果还好?br />

qiezi 2006-10-09 11:44 发表评论
]]>[private] 文字l图库资料收?/title><link>http://m.shnenglu.com/cpunion/archive/2006/09/28/13124.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Thu, 28 Sep 2006 12:03:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2006/09/28/13124.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/13124.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2006/09/28/13124.html#Feedback</comments><slash:comments>3</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/13124.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/13124.html</trackback:ping><description><![CDATA[主要攉可以l制文字的绘囑ֺ?br /><br />一、imagemagick:<br />http://www.cit.gu.edu.au/~anthony/graphics/imagick6/<br />可以l制文字Q不q中文好像不能自动断行?br /><br />二、vips<br />http://vips.sourceforge.net<br />使用pangol制文字Q中文可以断行，~少2端对齐功能。自׃改代码增加了调整行距功能Q做成ruby扩展库，amd64上用失败，原因待查?br /><br />三、freetype<br />http://vips.sourceforge.net<br />不依赖其它图?H口库，其它不熟悉，待查?br /><br />四、Graphite<br />跨^台的字体渲染库。待查?br /><br /><br />搜寻已有数月Q目前看到的几个库都不太理想Qmac osx上可能比较专业，不过集成较困难?br /><br />Ҏ|站上的比较完整的字体绘制和布局斚w的资料：<br />http://developer.apple.com/documentation/Carbon/Conceptual/ATSUI_Concepts/index.html<br />其中布局斚w的专业知识：<br />http://developer.apple.com/documentation/Carbon/Conceptual/ATSUI_Concepts/atsui_chap3/chapter_3_section_3.html#//apple_ref/doc/uid/TP30000029-TPXREF157<br /><br /><br />其它资料Q?br /><ul><li><a title="Uniscribe">Uniscribe</a> (Windows multilingual text rendering engine)</li><li><a title="WorldScript">WorldScript</a> (Old Macintosh multilingual text rendering engine)</li><li><a title="Apple Type Services for Unicode Imaging">Apple Type Services for Unicode Imaging</a> (New Macintosh multilingual text rendering engine)</li></ul><br /><img src ="http://m.shnenglu.com/cpunion/aggbug/13124.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2006-09-28 20:03 <a href="http://m.shnenglu.com/cpunion/archive/2006/09/28/13124.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[RoR] 实现一个auto_redirect_tohttp://m.shnenglu.com/cpunion/archive/2006/05/20/7434.htmlqieziqieziFri, 19 May 2006 18:33:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/05/20/7434.htmlhttp://m.shnenglu.com/cpunion/comments/7434.htmlhttp://m.shnenglu.com/cpunion/archive/2006/05/20/7434.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/7434.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/7434.html
我遇到的一个问题是Q当使用Ajax更新面局部内ҎQsession内容已经q期Q这旉要整个页面蟩转到d面?br />
直接调用redirect_to会局部内ҎC成d面Q它是在HTTP头里写入重定向参数来实现的。在我这里的Ҏ情况下，正确的做法是让它执行一个包含在<script>标记中的脚本Q在脚本中更改窗口location值来跌{?br />
不过RoR中用AjaxӞ会根?update参数来决定是使用Updaterq是Request。如果用Updater方式Q则应返回一D늺脚本Q如果是Request方式Q应q回一D包括在<script>标记中的脚本Q如果是普通方式，应该用原有的redirect_to函数了。因为服务端无法区分使用的是哪种方式来请求，所以简单的做法是每个请求都附加一个参数用来区分，不加参数则是普通请求方式?br />
Z辑ֈq个目的Q我修改了prototype_helper中的remote_function函数。这个函数根据传递进来的参数来决定用Request或是UpdaterQ我在q里下手Q?br />
      def remote_function(options)
        javascript_options = options_for_ajax(options)

        update = ''
        if options[:update] and options[:update].is_a?Hash
          update  = []
          update << "success:'#{options[:update][:success]}'" if options[:update][:success]
          update << "failure:'#{options[:update][:failure]}'" if options[:update][:failure]
          update  = '{' + update.join(',') + '}'
        elsif options[:update]
          update << "'#{options[:update]}'"
        end

        function = update.empty? ? 
          "new Ajax.Request(" :
          "new Ajax.Updater(#{update}, "
    
        url_options = options[:url]
        ajax_options = options[:update] ? {:ajax => 'update'} : {:ajax => 'request'}
        url_options = url_options.merge(ajax_options)
        url_options = url_options.merge(:escape => false) if url_options.is_a? Hash
        function << "'#{url_for(url_options)}'"
        function << ", #{javascript_options})"

        function = "#{options[:before]}; #{function}" if options[:before]
        function = "#{function}; #{options[:after]}"  if options[:after]
        function = "if (#{options[:condition]}) { #{function}; }" if options[:condition]
        function = "if (confirm('#{escape_javascript(options[:confirm])}')) { #{function}; }" if options[:confirm]

        return function
      end

有红色的2行是我添加的Q由于这个编辑器的原因，没有昄成整行红艌Ӏ这2行的作用是判断是否有:update参数Q用它来军_是添加ajax=updateq是ajax=request?br />
现在可以实现一个简单的auto_redirect_to了：

  def auto_redirect_to(method, url)
    case method
    when 'request'
      request_redirect_to(url)
    when 'update'
      update_redirect_to(url)
    else
      redirect_to(url)
    end
  end
  
  def request_redirect_to(url)
    render :update do |page|
      page.redirect_to(url)
    end
  end
  
  def update_redirect_to(url)
    render :inline => <<-EOS
      <script language="javascript">
      <%=
        render :update do |page|
          page.redirect_to("#{url_for(url)}")
        end
      %>
      </script>
    EOS
  end

使用helper方式使它能够被include到ApplicationController中就行了?br />
Z不和参数l得太死Q这里把method作ؓ参数p用者传入?br />
使用ҎQ以Login EngineZQ它在access_denied中处理蟩转。在ApplicationController中重写这个函敎ͼ

    def access_denied
      auto_redirect_to(params[:ajax], :controller => "/user", :action => "login")
      false
    end  

现在可以试了。请求可以是普通的Q超链接Q，Updater方式Q请求到一个DIV里）QRequest方式Q现在都能够跌{到正页面?br />
ajax参数通过hack库代码来实现Q对于用者来说基本上是透明的?br />

qiezi 2006-05-20 02:33 发表评论
]]>[RoR] 在RoR中调?Net webservicehttp://m.shnenglu.com/cpunion/archive/2006/05/14/7138.htmlqieziqieziSun, 14 May 2006 12:08:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/05/14/7138.htmlhttp://m.shnenglu.com/cpunion/comments/7138.htmlhttp://m.shnenglu.com/cpunion/archive/2006/05/14/7138.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/7138.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/7138.html
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Service : System.Web.Services.WebService
{
    [WebMethod]
    public string HelloWorld(string name) {
        return "Hello, " + name;
    }
    
}

在RoR目里，dapp/apis/test_api.rbQ?br />
class TestApi < ActionWebService::API::Base
  api_method :HelloWorld, :expects => [{:name => :string}], :returns => [:string]
end

q是RoR里面通用的webservice元信息描q?br />
dapp/controllers/test_controller.rb:

class TestController < ApplicationController
  web_client_api :test, :soap, "http://localhost/test/Service.asmx", 
                 :namespace => "http://tempuri.org/",
                 :soap_action_base => "http://tempuri.org",
                 :driver_options=>{:default_encodingstyle => SOAP::EncodingStyle::ASPDotNetHandler::Namespace }

  def hello
    render_text test.HelloWorld("Li Jie")
  end
end

:soap_action_base选项是一个修补，不加q个选项会生SOAPAction头错误?br />
q行服务器，在浏览器中访?test/helloQ发现名字ؓI。经q长旉调试Q发?Net在解析SOAP消息体时Q不能处理这U命名空_

    <n1:HelloWorld xmlns:n1="http://tempuri.org/"
        soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
      <name xsi:type="xsd:string">Li Jie</name>
    </n1:HelloWorld>

把n1Lp了。不q这部分实现在rubylib/soap/rpc/proxy.rb里面Q实在不方便修改。ؓ了让q个试通过Q暂时做了点修改：

  def route(req_header, req_body, reqopt, resopt)
    req_env = ::SOAP::SOAPEnvelope.new(req_header, req_body)
    unless reqopt[:envelopenamespace].nil?
      set_envelopenamespace(req_env, reqopt[:envelopenamespace])
    end
    reqopt[:external_content] = nil
    conn_data = marshal(req_env, reqopt)
    if ext = reqopt[:external_content]
      mime = MIMEMessage.new
      ext.each do |k, v|
          mime.add_attachment(v.data)
      end
      mime.add_part(conn_data.send_string + "\r\n")
      mime.close
      conn_data.send_string = mime.content_str
      conn_data.send_contenttype = mime.headers['content-type'].str
    end

    conn_data.send_string.gsub!(/:n1/, '')
    conn_data.send_string.gsub!(/n1:/, '')

    conn_data = @streamhandler.send(@endpoint_url, conn_data,
      reqopt[:soapaction])
    if conn_data.receive_string.empty?
      return nil
    end
    unmarshal(conn_data, resopt)
  end

加粗?行是我添加的代码Q勉强可以让它工作，不过昄不是正确的方法?br />
不知道是不是.Net库里面的BUG?img src ="http://m.shnenglu.com/cpunion/aggbug/7138.html" width = "1" height = "1" />

qiezi 2006-05-14 20:08 发表评论
]]>[RoR] 脚本模拟RJSh面http://m.shnenglu.com/cpunion/archive/2006/05/13/7087.htmlqieziqieziSat, 13 May 2006 15:49:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/05/13/7087.htmlhttp://m.shnenglu.com/cpunion/comments/7087.htmlhttp://m.shnenglu.com/cpunion/archive/2006/05/13/7087.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/7087.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/7087.html
演示面直接在浏览器中观看?br />
演示下蝲

qiezi 2006-05-13 23:49 发表评论
]]>[RoR] 用javascript脚本模拟一个actionhttp://m.shnenglu.com/cpunion/archive/2006/05/12/7046.htmlqieziqieziFri, 12 May 2006 15:41:00 GMThttp://m.shnenglu.com/cpunion/archive/2006/05/12/7046.htmlhttp://m.shnenglu.com/cpunion/comments/7046.htmlhttp://m.shnenglu.com/cpunion/archive/2006/05/12/7046.html#Feedback0http://m.shnenglu.com/cpunion/comments/commentRss/7046.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/7046.html
有些时候我们ƈ不需要请求服务器Q只惛_览器上执行某些脚本更新Q但又想使用RJS。所以ؓRoR增加了这功能?br />
使用ҎQ?br />
<script language="javascript">
<%= 
render :update do |page|
  page.define_action 'test_action' do
    page.call_script <<-EOS
      alert(params.comment.title);
      alert(params.comment.body);
    EOS
    page.replace_html 'errors', 'ERROR'
  end

  page.define_action 'link_action' do
    page.replace_html 'errors', 'ERROR'
  end
end
%>
</script>

<div id="errors"></div>

<%= form_local_tag :html => {:action => 'test_action'} %>
  <input name="comment[title]" /><br />
  <input name="comment[body]" /><br />
  <%= submit_tag 'Create' %>
<%= end_form_tag %>

<%= link_to_local 'Test', :action => 'link_action()' %>

上面演示了form_local_tag和link_to_local的用，打开q个面以后Q可以关掉服务器试Q会发现它不h服务器也能执行相应脚本?br />
define_action定义一个脚本函敎ͼcall_script用来实现javascript和RJS代码的؜合。当使用form_local_tagӞactionҎ的参数已l被处理q，所以可以直接在action中用params.comment.title?br />
当然现在q不完善Q比如还只能使用转换完的面模板Q一些动态页面将看不出效果。要做到q点Q需要用javascript实现一整套的ActionView辅助Ҏ?br />
下面提供一个针对rails 1.1.2的一个补丁文Ӟ

补丁文g下蝲

qiezi 2006-05-12 23:41 发表评论
]]>[RoR] 单的角色权限查插?/title><link>http://m.shnenglu.com/cpunion/archive/2006/05/08/6790.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Mon, 08 May 2006 13:30:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2006/05/08/6790.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/6790.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2006/05/08/6790.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/6790.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/6790.html</trackback:ping><description><![CDATA[代码比较单：<br /><br /><div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><span style="COLOR: #000000">module ActionController </span><span style="COLOR: #008000">#</span><span style="COLOR: #008000">:nodoc:</span><span style="COLOR: #008000"><br /></span><span style="COLOR: #000000"><br />  class CheckGroupError </span><span style="COLOR: #000000"><</span><span style="COLOR: #000000"> ActionControllerError </span><span style="COLOR: #008000">#</span><span style="COLOR: #008000">:nodoc:</span><span style="COLOR: #008000"><br /></span><span style="COLOR: #000000">    attr_reader </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">group_name<br />    def initialize(group_name)<br />      </span><span style="COLOR: #800080">@group_name</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">=</span><span style="COLOR: #000000"> group_name<br />    end<br />  end<br />  <br />  class CheckRoleError </span><span style="COLOR: #000000"><</span><span style="COLOR: #000000"> ActionControllerError </span><span style="COLOR: #008000">#</span><span style="COLOR: #008000">:nodoc:</span><span style="COLOR: #008000"><br /></span><span style="COLOR: #000000">    attr_reader </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">role_name<br />    def initialize(role_name)<br />      </span><span style="COLOR: #800080">@role_name</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">=</span><span style="COLOR: #000000"> role_name<br />    end<br />  end<br />  <br />  class Base </span><span style="COLOR: #008000">#</span><span style="COLOR: #008000">:nodoc:</span><span style="COLOR: #008000"><br /></span><span style="COLOR: #000000">    def roles<br />      []<br />    end<br />    <br />    def groups<br />      []<br />    end<br />    <br />    def check_roles(</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">role_args)<br />      role_args</span><span style="COLOR: #000000">.</span><span style="COLOR: #0000ff">each</span><span style="COLOR: #000000"> </span><span style="COLOR: #0000ff">do</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">|</span><span style="COLOR: #000000">role</span><span style="COLOR: #000000">|</span><span style="COLOR: #000000"><br />        check_role(role)<br />      end<br />    end<br />    <br />    def check_groups(</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">group_args)<br />      group_args</span><span style="COLOR: #000000">.</span><span style="COLOR: #0000ff">each</span><span style="COLOR: #000000"> </span><span style="COLOR: #0000ff">do</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">|</span><span style="COLOR: #000000">group</span><span style="COLOR: #000000">|</span><span style="COLOR: #000000"><br />        check_group(group)<br />      end<br />    end<br />    <br />    def check_group(group)<br />      raise CheckGroupError</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">new(group</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">to_s) </span><span style="COLOR: #0000ff">unless</span><span style="COLOR: #000000"> groups()</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">include</span><span style="COLOR: #000000">?</span><span style="COLOR: #000000">(group</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">to_s)<br />    end<br />    <br />    def check_role(role)<br />      raise CheckRoleError</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">new(role</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">to_s)   </span><span style="COLOR: #0000ff">unless</span><span style="COLOR: #000000"> roles()</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">include</span><span style="COLOR: #000000">?</span><span style="COLOR: #000000">(role</span><span style="COLOR: #000000">.</span><span style="COLOR: #000000">to_s)      <br />    end<br />  end<br />  <br />end</span></div><br />只需要在ApplicationController中实现roles和groupsq?个方法，Ҏ据库模式没有M限制Q只要能保证q?个方法能够得到当前用L角色和组卛_?br /><br />?个checkҎ可用Q可L使用一个或多个?br /><br />单模拟测试一下：<br /><br /><div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><span style="COLOR: #000000">class ApplicationController </span><span style="COLOR: #000000"><</span><span style="COLOR: #000000"> ActionController</span><span style="COLOR: #000000">::</span><span style="COLOR: #000000">Base<br />  def roles<br />    </span><span style="COLOR: #800080">%w</span><span style="COLOR: #000000">(add show)<br />  end<br /><br />  def groups<br />    </span><span style="COLOR: #800080">%w</span><span style="COLOR: #000000">(users)<br />  end<br />end</span></div><br /><div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><span style="COLOR: #000000">class TestController </span><span style="COLOR: #000000"><</span><span style="COLOR: #000000"> ApplicationController<br />  def test1<br />    check_role </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">add<br />    render_text </span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="FONT-WEIGHT: bold; COLOR: #000000">OK</span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="COLOR: #000000"><br />  end<br /><br />  def test2<br />    check_role </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">add<br />    check_group </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">users<br />    render_text </span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="FONT-WEIGHT: bold; COLOR: #000000">OK</span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="COLOR: #000000"><br />  end<br /><br />  def test3<br />    check_groups </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">admin</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">users<br />    render_text </span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="FONT-WEIGHT: bold; COLOR: #000000">OK</span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="COLOR: #000000"><br />  end<br /><br />  def test4<br />    check_roles </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">add</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">:</span><span style="COLOR: #000000">remove<br />    render_text </span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="FONT-WEIGHT: bold; COLOR: #000000">OK</span><span style="FONT-WEIGHT: bold; COLOR: #000000">"</span><span style="COLOR: #000000"><br />  end<br />end</span></div><br />其中Qtest1、test2都会成功Q而test3和test4则会p|昄异常Q只需要处理rescue_action把它修改q昄面卛_?img src ="http://m.shnenglu.com/cpunion/aggbug/6790.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2006-05-08 21:30 <a href="http://m.shnenglu.com/cpunion/archive/2006/05/08/6790.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>CQ＋实现单的cd?/title><link>http://m.shnenglu.com/cpunion/archive/2005/09/26/435.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Mon, 26 Sep 2005 09:31:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2005/09/26/435.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/435.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2005/09/26/435.html#Feedback</comments><slash:comments>9</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/435.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/435.html</trackback:ping><description><![CDATA[很久以前看到有h问“如何在CQ＋中实现动态加载类”时Q简单地做了一个?BR><BR>不过当时没有去考虑动态加载DLL的情c?BR><BR>今天?A href="mailto:cpp@codingnow.com">cpp@codingnow.com</A>中也有h问到q个问题Q就把它l做完了?BR><BR>当然只是单地做到了“从全局cd库中Q根据类名创建实例，支持动态DLL加蝲”，说得更明白点Q?BR><BR>在应用程序App1中，向全局cd库中注册一个类?Test"Q在另一个隐式链接的DLL中（即App1一启动加载的DLLQ，向全局cd库中注册另外几个cd。这时可以在App1中通过cd的名字生成实例?BR><BR>在另一个显式加载的DLL中（卌用LoadLibrary加蝲Q，向全局cd库中注册其它几个cd。这旉过LoadLibrary加蝲q个DLLQ就可以生成q几个类型的实例了?BR><BR>q地方不能上传文Ӟ把代码贴一点吧Q?BR><BR>typelib.h文gQ?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">#ifndef __TYPE_LIB_H__<BR></SPAN><SPAN style="COLOR: #0000ff">#define</SPAN><SPAN style="COLOR: #000000"> __TYPE_LIB_H__</SPAN><SPAN style="COLOR: #000000"><BR><BR>typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">CREATE_FUNC)();<BR>typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">RELEASE_FUNC)(</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">);<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> regtype (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name, CREATE_FUNC cfunc, RELEASE_FUNC rfunc);<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> createObject (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name);<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> releaseObject (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name, </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> p);<BR><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> ITestInterface<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">virtual</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">~</SPAN><SPAN style="COLOR: #000000">ITestInterface () {}<BR>    </SPAN><SPAN style="COLOR: #0000ff">virtual</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> print () </SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> create ()<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">new</SPAN><SPAN style="COLOR: #000000"> T;<BR>}<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> release (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> p)<BR>{<BR>    delete (T</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">)p;<BR>}<BR><BR></SPAN><SPAN style="COLOR: #0000ff">#endif</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> __TYPE_LIB_H__</SPAN></DIV><BR>typelib.cpp文gQ?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">#include </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">typelib.h</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000"><BR><BR>#include </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>#include </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">map</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">using</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">namespace</SPAN><SPAN style="COLOR: #000000"> std;<BR><BR></SPAN><SPAN style="COLOR: #0000ff">namespace</SPAN><SPAN style="COLOR: #000000"> TypeRegistry<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">static</SPAN><SPAN style="COLOR: #000000"> map </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, pair</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">CREATE_FUNC, RELEASE_FUNC</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">  types_info;<BR><BR>    template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> regType (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> name)<BR>    {<BR>        types_info.insert (make_pair(name, make_pair(create</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, release</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)));<BR>    }<BR>}<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> regtype (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name, CREATE_FUNC cfunc, RELEASE_FUNC rfunc)<BR>{<BR>    TypeRegistry::types_info.insert (make_pair(name, make_pair(cfunc, rfunc)));<BR>}<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> createObject (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name)<BR>{<BR>    map </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, pair</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">CREATE_FUNC, RELEASE_FUNC</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::const_iterator iter;<BR>    iter </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> TypeRegistry::types_info.find (name);<BR>    </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (iter </SPAN><SPAN style="COLOR: #000000">!=</SPAN><SPAN style="COLOR: #000000"> TypeRegistry::types_info.end ())<BR>        </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> (</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">iter</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">second.first)();<BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> NULL;<BR>}<BR><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> releaseObject (</SPAN><SPAN style="COLOR: #0000ff">const</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> name, </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> p)<BR>{<BR>    map </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, pair</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">CREATE_FUNC, RELEASE_FUNC</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::const_iterator iter;<BR>    iter </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> TypeRegistry::types_info.find (name);<BR>    </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (iter </SPAN><SPAN style="COLOR: #000000">!=</SPAN><SPAN style="COLOR: #000000"> TypeRegistry::types_info.end ())<BR>        (</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">iter</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">second.second)(p);<BR>}</SPAN></DIV><BR>把它~译成静态lib或DLLQ就可以使用了?BR><BR>在那2个ؓ我们提供cd的DLL中，DllMain函数中加入下面的代码Q?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> FirstTest和SecondTest?个类?/SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">regtype(</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">FirstTest</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">, create</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">FirstTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, release</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">FirstTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">);<BR>regtype(</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">FirstTest</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">, create</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">SecondTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, release</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">SecondTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">);</SPAN></DIV><BR>可以向全局cd库中注册cd。注意在cd库中是没有保存类信息的，所以最好是使用单根cd来做?BR><BR>下面是一Ҏ试代码：<BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> main()<BR>{<BR>       </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> E序启动时注册类型?BR>       </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 实际上启动时加载了另一个动态链接库Q那里面?个类型，所以现在有4个类?/SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">       regtype (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">MyTest</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">, create</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">MyTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, release</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">MyTest</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">);<BR>       </SPAN><SPAN style="COLOR: #0000ff">while</SPAN><SPAN style="COLOR: #000000"> (</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">)<BR>       {<BR>               </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000"> class_name;<BR>               cin </SPAN><SPAN style="COLOR: #000000">>></SPAN><SPAN style="COLOR: #000000"> class_name;<BR>               </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (class_name </SPAN><SPAN style="COLOR: #000000">==</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">q</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">)<BR>                       </SPAN><SPAN style="COLOR: #0000ff">break</SPAN><SPAN style="COLOR: #000000">;<BR>               </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 当输入loadӞ把另一个动态链接库加蝲q来Q那个链接库中有2个类型，现在共有6个类型可用?/SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">               </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (class_name </SPAN><SPAN style="COLOR: #000000">==</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">load</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">)<BR>               {<BR>                       LoadLibrary(</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">typelibdll_test.dll</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>                       </SPAN><SPAN style="COLOR: #0000ff">continue</SPAN><SPAN style="COLOR: #000000">;<BR>               }<BR>               ITestInterface</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> test </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> (ITestInterface</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">)createObject (class_name.c_str());<BR>               </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (</SPAN><SPAN style="COLOR: #000000">!</SPAN><SPAN style="COLOR: #000000">test)<BR>               {<BR>                       cout </SPAN><SPAN style="COLOR: #000000"><<</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">This type not found</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000"><<</SPAN><SPAN style="COLOR: #000000"> endl;<BR>                       </SPAN><SPAN style="COLOR: #0000ff">continue</SPAN><SPAN style="COLOR: #000000">;<BR>               }<BR>               test</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">print ();<BR>               releaseObject (class_name.c_str(), test);<BR>       }<BR>       </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>}<BR></SPAN></DIV><BR>q有一个没考虑的地方，是没有l它加锁Q因为有可能在一个线E中加蝲一个DLL?BR><BR>不过我还有些怀疑这东西是否真的有用Q?img src ="http://m.shnenglu.com/cpunion/aggbug/435.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2005-09-26 17:31 <a href="http://m.shnenglu.com/cpunion/archive/2005/09/26/435.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>为CQ＋实现一个IDL　Q二Q?/title><link>http://m.shnenglu.com/cpunion/archive/2005/09/20/349.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Tue, 20 Sep 2005 14:34:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2005/09/20/349.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/349.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2005/09/20/349.html#Feedback</comments><slash:comments>6</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/349.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/349.html</trackback:ping><description><![CDATA[<P>说明Q?BR>要看懂后面那部分代码Q即使用Typelist的部分，最好预先看q《CQ＋设计新思维》，英文版名为《Modern C++ Design》?BR>If模板cd写完后想h好像在哪见过Q早晨去公司查阅了一下，在《生式~程——方法、工具与应用》一书中有讲Q英文名为《Generative Programming -- Methods, Tools, and Applications》基本和本篇中一个样?BR><BR><BR>?ؕ七八p地讲了一些，有一个遗留问题，函数原型的推对{?BR><BR>要描q如下：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">short</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">) </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> method;<BR><BR></SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 同步调用</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000"> str </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">hello</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">;<BR></SPAN><SPAN style="COLOR: #0000ff">short</SPAN><SPAN style="COLOR: #000000"> value </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">;<BR>method (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">a</SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">, str, value</SPAN><SPAN style="COLOR: #000000">);<BR><BR></SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 异步调用1</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">method.async_call (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">a</SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">hello</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR><BR></SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 异步调用2</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> test_func (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">short</SPAN><SPAN style="COLOR: #000000">);<BR>method.async_call (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">a</SPAN><SPAN style="COLOR: #000000">'</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">hello</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">, test_func);</SPAN></DIV> <P><BR>要生这3U函数Ş式。参数类型如何{换，是以后的话题Q本主要解军_步调用的函数原Ş推导问题。本也不讨论Method的模板参敎ͼ即那个函数类型）q回cd不ؓvoid的情c?BR><BR>W一UŞ式，同步调用Q比较好处理Q参C数和模板参数的数量相同?BR><BR>?UŞ式，如何让编译器Ҏin/out来推导出函数原型Q?BR><BR>我们需要编译器做这L处理Qasync_call的参数类型中Qincd的参数将保留Qoutcd的参C需要，inoutcd也需要保留?BR><BR>要用到的Loki头文Ӟ</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">#include </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">static_check.h</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>#include </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Typelist.h</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #0000ff">using</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">namespace</SPAN><SPAN style="COLOR: #000000"> Loki;<BR></SPAN><SPAN style="COLOR: #0000ff">using</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">namespace</SPAN><SPAN style="COLOR: #000000"> Loki::TL;</SPAN></DIV> <P><BR>首先看看in/inout/out的声明。ؓ了简化，q里L了跟cd推导无关的部分?/P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> NullType<BR>{<BR>    NullType ();<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef T OriginalType;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef T OriginalType;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> inout<BR>{<BR>    typedef T OriginalType;<BR>};<BR></SPAN></DIV><BR>下面Method模板cȝ声明Q用偏特化来生代码。ؓ了简化，我只取函数参CCؓ4个参数的版本Q比照着上面的代码来解释Q只解释method.async_call (3, 'a', "hello", test_func);q个版本Q因为另一个比它简单?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Method<BR>{<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> Ret, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> D</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Ret(A,B,C,D)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> <BR>{<BR>};</SPAN></DIV> <P><BR>Ҏ上面Method的定义，Method < void(in<INT>, in<CHAR>, inout<STRING>, out<SHORT>) > Qasync_call函数的类型将是：<SPAN style="COLOR: #000000"></P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> (</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">short</SPAN><SPAN style="COLOR: #000000">);<BR></SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">char</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">, FUNC_TYPE func);</SPAN></DIV></SPAN><BR>实际上FUNC_TYPE应该能够接受更广泛的cdQ比如void(int, char, char*, short)Q这可以在内部做一些{换，不过本篇的重点不在这里，所以只讲上面的那种形式?BR><BR>直接在MethodcM实现有些ȝQ所以我把这个函数放在一个基cM实现Q只要编译器能帮我们推导Z面这UŞ式就行了Q?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> Ret, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> D</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Ret(A,B,C,D)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> A, B, C </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>};</SPAN></DIV> <P><BR>注意Q这里是以Method < void(in<INT>, in<CHAR>, inout<STRING>, out<SHORT>) >q种形式来讲的，才会有上面那U承关pR而实际上Q由于in/out在参C的位|、数量都是未知的Q要到定义时才能定Q所以用模板来推导。（入正题了Q?/P> <P>也就是说Q只要我们能使用静态推导方式，获得A,B,C,Dq四个参C所有的incdQ把它交lBase作ؓ模板参数成了?/P> <P>q里需要一个辅助的模板c，用来在编译时帮助推导Q?BR><BR></P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> InOutTypeTraits<BR>{<BR>    Loki::CompileTimeError </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">false</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> Not_Supported_Type;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">enum</SPAN><SPAN style="COLOR: #000000"> {isin</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">, isout</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">};<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">enum</SPAN><SPAN style="COLOR: #000000"> {isin</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">, isout</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">};<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">enum</SPAN><SPAN style="COLOR: #000000"> {isin</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">, isout</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">};<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> NullType </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">enum</SPAN><SPAN style="COLOR: #000000"> {isin</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">, isout</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">};<BR>};</SPAN></DIV></SPAN><BR>通过另一个模板类InList来帮我们产生所有的incdQ它的结果是一个Typelist。ؓ了方便以后用，我把outcd产生器也做了一个OutList?BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> CONDITION, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> _IF, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> _ELSE</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> If<BR>{<BR>    typedef _IF Result;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> _IF, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> _ELSE</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> If </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">, _IF, _ELSE</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef _ELSE Result;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> D </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, <BR>    </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> E </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> F </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> G </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> H </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType<BR></SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InList<BR>{<BR>    typedef typename If </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> <BR>        InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::isin,<BR>        typename Typelist </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> A, typename InList</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">B,C,D,E,F,G</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, <BR>        typename InList</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">B,C,D,E,F,G,H</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result <BR>    </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result Result;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> InList </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A, NullType, NullType, NullType, NullType, NullType, NullType, NullType</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef typename If </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"><BR>        InOutTypeTraits </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::isin,<BR>        typename MakeTypelist </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result,<BR>        typename MakeTypelist </SPAN><SPAN style="COLOR: #000000"><></SPAN><SPAN style="COLOR: #000000">::Result<BR>    </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result Result;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> D </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, <BR>    </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> E </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> F </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> G </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> H </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> NullType<BR></SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> OutList<BR>{<BR>    typedef typename If </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> <BR>        InOutTypeTraits</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::isout,<BR>        typename Typelist </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> A, typename OutList</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">B,C,D,E,F,G</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, <BR>        typename OutList</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">B,C,D,E,F,G,H</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result <BR>    </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result Result;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> OutList </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A, NullType, NullType, NullType, NullType, NullType, NullType, NullType</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef typename MakeTypelist </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">A</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result Result;<BR>};</SPAN></DIV><BR>它的原理是，ҎIf模板cL判断一个类型是不是incdQ是的话把它加入到Typelist中，不是排除它?BR><BR>InList <IN<INT>, in<CHAR>, inout<STRING>, out<SHORT>::Result是一个Typelist <IN<INT>, Typelist<IN<CHAR>, Typelist<INOUT<STRING>, NullType> > >cdQ说单点Q它和MakeTypelist < in<INT>, in<CHAR>, inout<STIRNG> >::Result是等L?BR><BR>现在Base模板cd接受一个模板参敎ͼ它是一个TypelistcdQ这个不详细讲了Q把它的定义写出来：<BR><BR> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T, </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> T_COUNT </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> Length </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">IN_TYPE</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::value </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base<BR>{<BR>    Loki::CompileTimeError </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">false</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> Only_Use_Partial_Specialisation_Version;<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)();<BR><BR>    template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> FUNC_TYPE</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (FUNC_TYPE func)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call ()<BR>    {<BR>    }<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)(<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0,<BR>        FUNC_TYPE func)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0)<BR>    {<BR>    }<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)(<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1, <BR>        FUNC_TYPE func)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1)<BR>    {<BR>    }<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)(<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v2, <BR>        FUNC_TYPE func)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v2)<BR>    {<BR>    }<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Base </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">4</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>    typedef </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">FUNC_TYPE)(<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v2, <BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v3,<BR>        FUNC_TYPE func)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> async_call (<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v0,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v1,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">2</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v2,<BR>        typename TypeAt </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">T, </SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::Result::OriginalType v3)<BR>    {<BR>    }<BR>};</SPAN></DIV><BR>q部分有点多Q其实还是比较清晰的。注意这个Base的版本已l不是上面所讲的那个了?BR><BR>函数原Ş推导问题p完了。上面的代码不一定还能编译，昨天是能~译的，被我修改了一些，Z解释Q又Ҏ昨天那样子?img src ="http://m.shnenglu.com/cpunion/aggbug/349.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2005-09-20 22:34 <a href="http://m.shnenglu.com/cpunion/archive/2005/09/20/349.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>正式建立asgard目 (因ancients已经被h使用了）http://m.shnenglu.com/cpunion/archive/2005/09/20/327.htmlqieziqieziTue, 20 Sep 2005 02:30:00 GMThttp://m.shnenglu.com/cpunion/archive/2005/09/20/327.htmlhttp://m.shnenglu.com/cpunion/comments/327.htmlhttp://m.shnenglu.com/cpunion/archive/2005/09/20/327.html#Feedback16http://m.shnenglu.com/cpunion/comments/commentRss/327.htmlhttp://m.shnenglu.com/cpunion/services/trackbacks/327.html
目命名为ancientsQ字面意思是“远古的Q旧的”，实际上这个主题也是旧的了。原本打命名ؓC++ RemotingQ不q想了一下，q是换个名字Q免得让Z看就x去跟java, c#的remoting比较?BR>
取这个名字主要是因ؓ喜欢看《星际之门》剧集，里面最喜欢的一个种族就是ancients?BR>
asgard是另一个种族，在ancientsq个名字被h占用了的情况下，只好选它了。它的字面意思是“仙宫”，也是不错的名字，呵呵。asgardq个U族的科技非常发达Q有先进的亚I间旅行技术，先进的光传送技术，w体也比较符合一些报道中外星人的样子?BR>
暂时q没扑ֈ合适的I间来放q个目Q就以压~包的Ş式在q个blog上做吧?BR>
打算先实现动态部分，我给它命名ؓreflectionQ模仿java的，当然也不会做它那么完整。这部分必须先做Q这h便用来测试静态结构?BR>
然后是静态结构部分，前面已经写了2ؕ七八p的描述Q剩余问题（函数原Ş推导问题Q基本已l解决了?BR>
整个框架在Service以下都是环境无关的，q里的环境指的是协议、通讯{环境。也是_定义一个ServiceQƈ不在一开始就指定它所使用的通讯协议。定义完成以后，把它指定l一个协议，可以实现协议绑定，甚至在运行时d态切换到另一个协议。当然这可能是不合理的，不过我认为如果支持这U做法，本n是灉|性的一U体现?BR>


前面q有些地方，和实际情冉|些差别的Q需要补充完善。简要描q如下：

使用宏来定义ServiceQ前面只定义了方法的原型、名U、服务端l定的函敎ͼ其实q差一个重要的东西Q就是参数的名字?BR>如果使用自己的协议，或者是序存储的协议，比如BENCODEQ来作ؓq程调用协议Q那么参数的名字是不重要的，只要按顺序把参数序列化、反序列化就可以了?BR>但在使用SOAP作ؓq程调用协议Ӟ得考虑为参数加上名字了QSOAP是从XML元素中，按参数名U来提取参数值的Q虽然我们可以ؓ参数生成一个名字，但这个名字不能描q参数所表达的意思?BR>所以需要考虑为参数取上名字?BR>
暂时p充这一点，其它斚w有等q一步研I?img src ="http://m.shnenglu.com/cpunion/aggbug/327.html" width = "1" height = "1" />

qiezi 2005-09-20 10:30 发表评论
]]>为CQ＋实现一个IDL　Q一Q?/title><link>http://m.shnenglu.com/cpunion/archive/2005/09/17/284.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Sat, 17 Sep 2005 11:40:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2005/09/17/284.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/284.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2005/09/17/284.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/284.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/284.html</trackback:ping><description><![CDATA[<P>前面单写了点静态结构，q一ơ将主要x动态模型以及调用方式?/P> <P>q个pd的名字叫“ؓC++实现一个IDL”，实际上应该叫“ؓC++实现一个Remoting”可能更好一些，说是IDLQ主要是想通过宏，使用单的cd定义辑ֈ自动生成调用代码的目的?/P> <P><STRONG>一、首先来看看调用习惯?/STRONG></P> <P>从调用习惯入手，主要是因为看到目前有很多?工具包在调用上都有很多不便之处。假如能在一开始就从这点出发，p把调用接口设计得更好一些?/P> <P>先来看看服务端如何开放一个服务?/P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> main ()<BR>{<BR>    </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 发布为SOAP服务Q先生成一个服务容器?BR>    </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 服务发布在localhost?911上，localhost用来l定loopback|卡?/SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">    SOAPProxy soap_service (</SPAN><SPAN style="COLOR: #000000">7911</SPAN><SPAN style="COLOR: #000000">, “localhost?;<BR><BR>    TestService test_service; <BR>    soap_service.addService  (“test_service? </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test_service);<BR><BR>    TestService service1;<BR>    soap_service.addService (“HelloService? </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">service1);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">try</SPAN><SPAN style="COLOR: #000000">{<BR>        soap_service.run ();<BR>    } </SPAN><SPAN style="COLOR: #0000ff">catch</SPAN><SPAN style="COLOR: #000000"> (SocketException</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> e)<BR>    {<BR>    } </SPAN><SPAN style="COLOR: #0000ff">catch</SPAN><SPAN style="COLOR: #000000"> (SignalException</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> e)<BR>    {<BR>    }<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>}</SPAN></DIV> <P><BR>我希望就是这么简单，客户端调用有多种方式Q?BR>1、 用服务的IDL定义Q直接调用：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> main ()<BR>{<BR>    SOAPProxy soap_service (</SPAN><SPAN style="COLOR: #000000">7911</SPAN><SPAN style="COLOR: #000000">, “localhost?;<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">try</SPAN><SPAN style="COLOR: #000000">{<BR>        TestService test_service (“test_service? </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">soap_service);<BR>        test_service.method1 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000"><IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000">);<BR>    } </SPAN><SPAN style="COLOR: #0000ff">catch</SPAN><SPAN style="COLOR: #000000"> (SocketException</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> e)<BR>    {<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>}</SPAN></DIV> <P><BR>q种方式比较单，调用时会查是否已l连接，然后发送调用请求，q处理调用结果?/P> <P>2、 服务验证方式：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> main ()<BR>{<BR>    SOAPProxy soap_service (</SPAN><SPAN style="COLOR: #000000">7911</SPAN><SPAN style="COLOR: #000000">, “localhost?;<BR>    TestService test_service;<BR>    soap_service.getService (“test_service? </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test_service);<BR><BR>    </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (test_service)<BR>    {<BR>        </SPAN><SPAN style="COLOR: #0000ff">try</SPAN><SPAN style="COLOR: #000000">{<BR>            test_service.method1 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000"><IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000">);<BR>        } </SPAN><SPAN style="COLOR: #0000ff">catch</SPAN><SPAN style="COLOR: #000000"> (SocketException</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> e)<BR>        {<BR>        }<BR>    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>}</SPAN></DIV> <P><BR>3、 服务发现方式：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> main ()<BR>{<BR>    SOAPProxy soap_service (</SPAN><SPAN style="COLOR: #000000">7911</SPAN><SPAN style="COLOR: #000000">, “localhost?;<BR>    vector </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> services_name </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> soap_service.getServiceNames ();<BR>    </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> <IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">    IService</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> test_service </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> soap_service.getService (“test_service?;<BR>    </SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"> (test_service)<BR>    {<BR>        vector </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> methods </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> test_service</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">getMethodNames ();<BR>        IMethod</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> method </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> test_service</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">getMethod (“method1?;<BR>        vector </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Type</SPAN><SPAN style="COLOR: #000000">*></SPAN><SPAN style="COLOR: #000000"> types </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> method</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">getParameterType s()<BR>        method</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">addArg (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">);<BR>        method</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">addArg (</SPAN><SPAN style="COLOR: #000000">4</SPAN><SPAN style="COLOR: #000000">);<BR>        </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> <IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">        method</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">invoke ();<BR>        </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> <IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">    }<BR>    </SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR>}</SPAN></DIV> <P><STRONG><BR>二、基本需求?BR><BR></STRONG>单分析一下，上面一共涉及了哪些cdQ?BR>IProxy:<BR>q是所有Proxycȝ基类(和接?Q它可以容纳多个服务对象Q提供服务绑定、服务查询、服务发现、服务验证?BR>IService:<BR>所有Servicecȝ基类Q可以容U_个方?Method)Q提供方法查询、服务验证?BR>IMethod:<BR>所有Method模板cȝ基类Q容U_个参敎ͼ包括q回|可通过查询参数cd获得Ҏ的类型定义?BR>IParameter:<BR>所有参数的基类Q包含一个参数类型描q和一个参数倹{?BR>IType:<BR>所有类型的基类Q预定义了一些基本类型，可自定义cd?/P> <P>看v来挺多的Q其实很难接触到q些Q只需要用宏来定义一个服务，可以通过模板的类型推|自动生成q些复杂的定义?/P><STRONG>三、调用过E?BR><BR></STRONG>以下只简单分析一下同步调用，异步调用是以后的扩充话题?BR>ҎW二节的3U不同调用过E，要描q如下： <OL> <LI>直接调用?BR><BR> <UL> <LI>生成SOAPProxyQ让它连接到q程L?BR> <LI>生成一个TestService对象Q设|远E主Z的服务名Uͼq指定用SOAPProxyQ也即用SOAP协议?BR> <LI>调用TestService::method1Ҏ。根据method1的定义，把服务名U、方法名U、各个in参数{打包成一个“集合”，交给SOAPProxy处理?BR> <LI>SOAPProxy把这个“集合”{换成SOAP消息Q发送到q程LQ阻塞线E?BR> <LI>q程L上的SOAPProxy对象收到数据Q进行解析。当解析Z个服务调用时Q把它交lTestService服务处理?BR> <LI>TestService解析Z个方法调用，把它交给Method处理?BR> <LI>Method解析出各个参敎ͼ验证参数cd、完整性等Qƈ执行调用或返回错误?BR> <LI>Method调用的返回信?包括调用l果、返回倹{out参数{?被打包成一个“集合”，交给TestService处理?BR> <LI>TestService处理后，交给SOAPProxy?BR> <LI>SOAPProxy把结果打包成SOAP消息Q发回调用端?BR> <LI>调用端解析SOAP消息Q把OUT参数Dl调用者提供的对象Q调用完成?</LI></UL> <P> </P> <LI>服务验证方式?BR> <UL> <LI>生成SOAPProxyQ让它连接到q程L?BR> <LI>生成TestService对象Q调用SOAPProxy的getService验证版本?BR> <LI>SOAPProxy把TestService对象的信?名称、成员及基类型等)发送到q程LQ阻塞?BR> <LI>q程L解析收到的信息，查找服务名，q比较查扑ֈ的服务类型与解析得到的类型?BR> <LI>比较l果发回l调用端?BR> <LI>调用端接着采用直接调用的方式，调用q程服务?/LI></UL><BR>q种方式看v来多了一些操作，不过验证的好处是能够减少调用时的异常? <P></P> <LI>服务发现方式?BR> <UL> <LI>生成SOAPProxyQ让它连接到q程L?BR> <LI>查询q程开攄服务名称?可省?<BR> <LI>查找特定服务Q得到服务描qC息?BR> <LI>查找服务中的ҎQ得到方法描qC息?BR> <LI>压入各个参数Qƈ执行调用?BR> <LI>调用前先判断参数是否与描qC_然后调用SOAPProxy生成SOAP消息Q发送到q程LQ阻塞?BR> <LI>q程L解析用。。。后面过E与W?U方式相同，q程Lq不知道客户端用的是哪U方式来调用。远E主机处理结束，返回SOAP消息l调用端?BR> <LI>调用端解析出调用l果Qƈ把各个OUT参数的Dlmethod对象?/LI></UL><BR>使用q种方式Q调用端不需要服务的cd定义? <P></P></LI></OL> <P><STRONG>四、异步调?异步分派(AMI/AMD)?BR></STRONG><BR>同步调用Ӟ调用端线E需要等待调用结果，服务端线E也要等待调用结束返回，才处理下一个调用?BR>Z在服务调用期间让U程能做更多的事Q?BR>调用端把调用交给U程池完成，q在调用完成后采用某U机刉知U程处理l果Q或者直接由U程池中的调用线E调用结果处理函数。这U方式称为AMI(异步Ҏ调用)?BR>服务端主U程则把接收到的消息解析后，攑օ处理队列Q由U程池去处理调用q程。当调用完成后，l果攑օl果队列Q由ȝE处理成消息Q发送回调用端。这U方式称为AMD(异步Ҏ分派)?BR>调用端和服务端依旧是使用通讯协议来沟通，双方都不知道Ҏ是否采用了异步方式?/P> <P>AMI和AMD对于静态定义的服务是有影响的，比如下面一个服务：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService<BR>{<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> method1;<BR>}</SPAN></DIV> <P><BR>在同步调用时Q它的调用方式：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">TestService test_service;<BR></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> a;<BR>service.method1 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, a); </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 或者 service.method1 (3, &a)Q打兼容这2U方式?/SPAN></DIV> <P><BR>异步调用Ӟ调用方式Q?/P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> method1_result (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">);<BR>TestService test_service;<BR>test_service.method1.async_call(</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, method1_result); </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 调用完成后，让调用线E去调用method1_result通知调用l果?BR></SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> 或者像下面</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">IMethod</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> result </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> test_service.method1.async_call (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">);<BR></SPAN><SPAN style="COLOR: #0000ff">while</SPAN><SPAN style="COLOR: #000000"> (</SPAN><SPAN style="COLOR: #000000">!</SPAN><SPAN style="COLOR: #000000">result</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">done())  </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"> q有很多好办法，q里只是Z单?/SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">{<BR>    sleep (</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">);<BR>}<BR>cout </SPAN><SPAN style="COLOR: #000000"><<</SPAN><SPAN style="COLOR: #000000"> result</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">getArg(</SPAN><SPAN style="COLOR: #000000">1</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">toInt(); <BR></SPAN></DIV> <P><BR>正如上面演示的一P异步调用的结果有2U方式去处理?BR>一是由U程池调用完以后Q接着调用一个函C通知l果。它不需要轮询，不过涉及CU程问题Q增加了一些复杂性?BR>另一U方式调用结束后Q原调用U程在某个适当的“时机”去查询调用l果。这个时机可以是定时查询Q也可以是被U程消息通知而去处理?/P> <P><STRONG>五、其它?BR></STRONG><BR>q一加上前一，应该是提C全部的要炏V?BR>目前剩下的唯一一个难点，可能是在处理异步调用ӞMethod的定义?BR>正如上面演示的，一个方法在同步调用和异步调用时Q就?U调用方式：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">service.method1 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, a);<BR>test_service.method1.async_call(</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, method1_result);<BR>IMethod</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> result </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> test_service.method1.async_call (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">);</SPAN></DIV> <P><BR>特别圎ͼ它如何根据in和个数和out的个敎ͼ产生?个参C数匹配的异步调用函数Q?BR>再来回顾一下method1的定义：</P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> method1;</SPAN></DIV> <P><BR>昄有一定的复杂性，不过我认是可以处理掉的。拿3个参数的偏特化版本来说明Q?/P> <DIV style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> Ret, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Ret</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">(A,B,C)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> MethodBase </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">Ret</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">,A,B,C</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR>{<BR>};<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> Ret</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> B</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> C</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">NullType, </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> D</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">NullType, IN_COUNT</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">InCount</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000"> A,B,C,D</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">::value </SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> MethodBase<BR>{<BR>};<BR><BR></SPAN></DIV> <P><BR>通过对MethodBasecȝINQCOUNT参数定义偏特化，卛_定义些不同的版本?BR><BR>当然仅仅是知道了IN参数的个敎ͼq没有提取出IN参数的类型，所以还不能生成函数的原型，或许需要把typelist加进来了Qloki中的那个Q?BR><BR><BR><BR>q是后面要考虑的内容，今天先想到这?/P><img src ="http://m.shnenglu.com/cpunion/aggbug/284.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2005-09-17 19:40 <a href="http://m.shnenglu.com/cpunion/archive/2005/09/17/284.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>为CQ＋实现一个IDL　Q零Q?/title><link>http://m.shnenglu.com/cpunion/archive/2005/09/15/272.html</link><dc:creator>qiezi</dc:creator><author>qiezi</author><pubDate>Wed, 14 Sep 2005 17:27:00 GMT</pubDate><guid>http://m.shnenglu.com/cpunion/archive/2005/09/15/272.html</guid><wfw:comment>http://m.shnenglu.com/cpunion/comments/272.html</wfw:comment><comments>http://m.shnenglu.com/cpunion/archive/2005/09/15/272.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://m.shnenglu.com/cpunion/comments/commentRss/272.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/cpunion/services/trackbacks/272.html</trackback:ping><description><![CDATA[<P>一、问题?BR><BR>q段旉考虑实现一个纯CQ＋的分布式服务包装库，要描q如下：</P> <P>有如下类和函敎ͼ</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Test<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> test1 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test2 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">out</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>};<BR><BR></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test_func (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">inout</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);</SPAN></DIV></DIV> <P><BR>x它们作ؓ服务发布出去Q以SOAP或其它方式。发布ؓ一个TestServiceQƈ让它携带多一些信?</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> test1 (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test2 (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test_func (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>};</SPAN></DIV></DIV> <P><BR>CQ＋有许多工兗库来做到这点，但是Q都需要生成一堆代码，很是不爽?BR><BR>其它语言Q比如python, java, c#{，都可以通过自省机制Q抛开IDL在语a内实现?BR><BR>CQ＋q不能做这个，它只是缺够的cd信息。比如上面的例子Q如果要发布为服务，那么臛_应该把它的参数、返回值搞得明些Q否则要么会造成不必要的参数传递，要么会生错误（把OUT参数取值可不是安全的）?BR><BR>比如上面出现的int, int&, int*Q在作ؓin参数Ӟ我们是想传递它的|cd为int。而int*和string*作ؓout参数Ӟ我们惌它传递指针或引用Q当调用q回Ӟ我们l它赋倹{?BR><BR>CQ＋语言的类型极Z富，却没有描qC个参数到底是inq是out。java也没有，但它可以正常序列化一个null|在CQ＋中，q可能存在一些麻烦?BR><BR>再考虑一下char*cdQ假如它是in参数Q那么它是要传递一个字W还是一个字W串QCQ＋语言没有对它q行描述?BR><BR>所以要实现一个分布式服务包装Q或代理Q库Q必让发布者提供这些信息?BR><BR>我们知道Q要查询一个远E服务，必须查询相应L端口Q获取服务信息。最单的服务信息包括Q服务列表，每个服务中的Ҏ列表Q方法的cdQ包括参数和q回值类型，in/out信息{）?BR><BR>实际上，我们是要为CQ＋增加一些简单的自省能力。上面那个服务发布接口，实际上离q个要求q有很远Q再来看一下：</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> test1 (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test2 (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test_func (</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v1, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> v2);<BR>};</SPAN></DIV></DIV> <P><BR>可以惌Q它是没有一点自省能力的Q我们如何向它查询，它的名字Q它的方法列表？Ҏ的类型？它如何与Testcȝ成员函数以及test_func函数兌Q?/P> <P>二、方向?BR><BR>要让上面那个服务h自省能力Q要做的扩充其实q不多。考虑下面的代码：</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> Service<BR>{<BR>    TestService ();<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test1;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test2;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">) test_func;<BR>};</SPAN></DIV></DIV> <P><BR>q几个Method可以用自己写的委托类来做?BR><BR>1、假如我们在TestService的构造函数里l它分配一个“TestService”名字，q且ServicecdC查询名字的接口，那么它就知道它自q名字了?BR><BR>2、假如在TestService的构造函数里为各个Method分配名字Qƈ且注册到TestServiceQ那么它p够查询方法列表?BR><BR>3、方法的cdQ通过模板方式Q把各个参数cd攉hQ给个字W串名称可以了?BR><BR>使用宏来实现Q大概可以写成这P<BR><BR></P> <P></P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">BEGIN_SERVICE (TestService)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test1, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test2, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test_func, test_func)<BR>END_SERVICE ()</SPAN></DIV></DIV> <P><BR>通过上面q几个宏Q我们能够生成TestService声明?BR><BR>不过Q有几个问题Q罗列如下，q一一解决它：<BR><BR>1、如何把函数指针传给它？如何把方法名UCl它Q?BR>q个只是CQ＋语言为我们增加了一些麻烦，我们无法在定义成员的地方调用它的构造函敎ͼ不过qƈ不会造成多大障碍?BR>上面的METHOD宏如果只是生成类的声明，那么函数指针可以省略。我把它加上的原因是Q它可以被我用Ctrl+C, Ctrl+Vq种世界上最先进的技术原h贝下来，q且通过单修改的Ҏ实现q种世界上最先进的重用?BR><BR>上面的代码经q修改，l果成q样Q?/P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">BEGIN_SERVICE (TestService)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test1, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test2, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2)<BR>    METHOD (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test_func, test_func)<BR><BR>    BEGIN_DEFINE (TestService)<BR>        METHOD_DEFINE (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test1, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1)<BR>        METHOD_DEFINE(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test2, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2)<BR>        METHOD_DEFINE(</SPAN><SPAN style="COLOR: #0000ff">int(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test_func, test_func)<BR>    END_DEFINE ()<BR><BR>END_SERVICE ()</SPAN></DIV></DIV> <P><BR>看上d应得非常整齐Q修改v来也比较单。上面那部分被扩充ؓ如下代码Q?/P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> Service<BR>{<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test1;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test2;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">) test_func;<BR>    TestService ()<BR>    : Service (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">TestService</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">)<BR>    {<BR>        test1.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test1</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        test1.setMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test1);<BR>        test2.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test2</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        test2.setMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test2);<BR>        test_func.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test_func</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        test_func.setMethod (test_func);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test3);<BR>    }<BR>};</SPAN></DIV></DIV> <P><BR>基本上需要的东西都在q里了?BR><BR>2、客L的问题?BR></P> <P>上面q种映射Q直接拿到客L会有问题QTestcdtest_func函数我们q不打算交给客户端，所以用函数指针会出现链接错误?BR><BR>实际上客L不需要这个，我们惛_法把它拿掉就行了。客L实际需要生成的代码如下Q?BR><BR></P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> TestService : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> Service<BR>{<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test1;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test2;<BR>    Method </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">) test_func;<BR>    TestService ()<BR>    : Service (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">TestService</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">)<BR>    {<BR>        test1.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test1</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test1);<BR>        test2.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test2</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test2);<BR>        test_func.setName (</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">test_func</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR>        </SPAN><SPAN style="COLOR: #0000ff">this</SPAN><SPAN style="COLOR: #000000">-></SPAN><SPAN style="COLOR: #000000">registerMethod (</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">test3);<BR>    }<BR>};</SPAN></DIV></DIV> <P><BR>q是上面提到的，C++l我们带来的ȝ。这ơ需要另一l宏来完成它Q?/P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">BEGIN_SERVICE_D (TestService)<BR>    METHOD_D (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test1)<BR>    METHOD_D (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test2)<BR>    METHOD_D (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test_func)<BR><BR>    BEGIN_DEFINE_D (TestService)<BR>        METHOD_DEFINE_D (</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test1)<BR>        METHOD_DEFINE_D(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test2)<BR>        METHOD_DEFINE_D(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">), test_func)<BR>    END_DEFINE_D ()<BR><BR>END_SERVICE_D ()</SPAN></DIV></DIV> <P><BR>METHOD*和METHOD_DEFINE*宏的参数都有一些多余的信息Q没有去掉是因ؓ攑֜一起容易看到写错的地方。（q个技巧来源于前几天看的一BLOGQ很报歉没有C地址Q?BR><BR>3、用的问题?BR><BR>如何才能比较方便C用？我考虑了下面这U方式：</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> IProxy;<BR><BR>template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> SOAPProxy;<BR><BR>SOAPProxy </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #000000">TestService</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> service;<BR>service.connect (</SPAN><SPAN style="COLOR: #000000">5000</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">localhost</SPAN><SPAN style="COLOR: #000000">"</SPAN><SPAN style="COLOR: #000000">);<BR></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> a</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">0</SPAN><SPAN style="COLOR: #000000">;<BR></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">n </SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">a;<BR>service.test1 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, n);<BR>service.test1 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">n);<BR>service.test2 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, n);<BR>service.test2 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000">n);<BR>service.test2 (</SPAN><SPAN style="COLOR: #000000">3</SPAN><SPAN style="COLOR: #000000">, NONE);<BR></SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"><IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN></DIV></DIV> <P><BR>Method::operator ()的各个参数都可以接受相容的cdQ像上面一P因ؓ在TestService中我们已l定义了它要传输的值的cd?BR><BR>a.NONE是什么？其实是ؓ异步调用考虑的。假如指定某个OUT参数为NONEQ则q个参数的值ƈ不真正的OUTQ而是保存在Method中。实际上Method中保存每个参数的倹{?BR><BR>b.Method与Service如何发生关系Q?BR>从TestService的定义中我们知道QMethod向Service注册自己以实现自省，但它同时也会保存Service的指向?BR>我们的Proxy实际上是一个承模板，上面q没有把它指出来。它的定义是Q?/P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">template </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> T</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> XProxy : </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> T<XPROXY><BR>{<BR>    </SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000"><IMG src="http://m.shnenglu.com/images/dot.gif"></SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #000000">};</SPAN></DIV></DIV> <P><BR>所以我们的TestService其实也是模板c，它将使用XProxy中定义的序列化类。XProxy实现Service基类中序列化虚函C及调用虚函数?BR><BR>当一个Method调用Ӟ它会调用Service的序列化Q由于被重写了，所以调用的是XProxy中的序列化方法。这个方法会把这个Method的各in/inout参数序列化，然后执行q程调用Q再把调用结果反序列化给inout/out参数?BR><BR>4、其它想法?BR><BR>在考虑上面的定义方式时Q我也考虑了其它方式，主要是返回值处理的ҎQ简q如下?BR><BR>前面我们假设了一D将被开放ؓq程服务的代码：</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Test<BR>{<BR>    </SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000"> test1 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>    </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test2 (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">out</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>};<BR><BR></SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> test_func (</SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">in</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #008000">/*</SPAN><SPAN style="COLOR: #008000">inout</SPAN><SPAN style="COLOR: #008000">*/</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);</SPAN></DIV></DIV> <P><BR>在前面的做法中，我们的服务描q是攑֜那一l宏里面Q好处是不用改这D代码，坏处是代码定义的地方和描述不在一P协调可能会有一些不ѝ?BR><BR>我也考虑了另一U做法：<BR><BR></P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #0000ff">struct</SPAN><SPAN style="COLOR: #000000"> Test<BR>{<BR>    idl </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">void</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test1 (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>    idl </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, </SPAN><SPAN style="COLOR: #0000ff">out</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000"> test2 (</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);<BR>};<BR><BR>idl </SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">in</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">, inout</SPAN><SPAN style="COLOR: #000000"><</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">></SPAN><SPAN style="COLOR: #000000">) test_func </SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v1, </SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">*</SPAN><SPAN style="COLOR: #000000"> v2);</SPAN></DIV></DIV> <P><BR>对于实现代码Q只需要修改返回gؓvoid的函敎ͼ把return;修改为return VOID;Qƈ且ؓ没有写此语句的分支加上此句?BR><BR>VOID是一个特D类型的静态变量，专ؓvoidq回值的函数讑֮?BR><BR>q种做法修改了原有的代码Q不q在定义服务时可以节省一些工作：</P> <DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"> <DIV><SPAN style="COLOR: #000000">BEGIN_SERVICE (TestService)<BR>    METHOD (test1, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1)<BR>    METHOD (test2, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2)<BR>    METHOD (test_func, test_func)<BR><BR>    BEGIN_DEFINE (TestService)<BR>        METHOD_DEFINE (test1, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test1)<BR>        METHOD_DEFINE (test2, </SPAN><SPAN style="COLOR: #000000">&</SPAN><SPAN style="COLOR: #000000">Test::test2)<BR>        METHOD_DEFINE (test_func, test_func)<BR>    END_DEFINE ()<BR><BR>END_SERVICE ()</SPAN></DIV></DIV> <P><BR>它所需要的函数cdQ将由函数指针推对{?BR><BR>在GQ＋~译器下Q可以用typeof来获得函数指针的cd而不需要真得获得函数指针|不过目前仅仅在GQ＋下可用。（Z说一下，typeof已经列入c++0xQ?BR><BR>最l我攑ּ了这个想法，毕竟它要修改现有的代码，某些情况下这是不可能的，而且typeof目前也不能跨~译器?BR><BR>三、实现?BR><BR>老实说我现在q没有一份完整的或半完整的实玎ͼ大部分想法还在头脑中Q测试代码倒是写了不少Q主要是用来试上述x能否实现Q我惛_部分情况都已l测试了Q只需要有旉来把它实现出来?BR><BR>q是我近期要做的事之一Q争取月内把它做完Ş?/P><img src ="http://m.shnenglu.com/cpunion/aggbug/272.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/cpunion/" target="_blank">qiezi</a> 2005-09-15 01:27 <a href="http://m.shnenglu.com/cpunion/archive/2005/09/15/272.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> <p>лǵվܻԴȤ</p> <a href="http://m.shnenglu.com/" title="精品视频久久久久">精品视频久久久久</a> <div class="friend-links"> </div> </div> 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