秒大刀博客

好好学习天天向上

日志

关于我

秒大刀

文章分类

得到主线程ID

2011-02-10 14:30:20| 分类： C/C++ | 标签： |举报 |字号大中小订阅

下载LOFTER 我的照片书 |

多线程应用中通常需要判断当前是否处于主线程中。通过判断当前线程ID是否和主线程ID相等即可实现该功能。

#include <Windows.h>
#include <tlhelp32.h>

DWORD GetMainThreadId(DWORD processId = 0)
{
if(processId == 0)
processId = GetCurrentProcessId();

DWORD threadId = 0;
THREADENTRY32 te32 = { sizeof(te32) };
HANDLE threadSnap = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
if(Thread32First(threadSnap, &te32))
{
do
{
if( processId == te32.th32OwnerProcessID )
{
threadId = te32.th32ThreadID;
break;
}
}while(Thread32Next(threadSnap, &te32));
}
return threadId;
}

bool IsMainThread()
{
return GetCurrentThreadId() == GetMainThreadId();
}

如果利用线程本地存储(Thread Local Storage, TLS)，还可通过防止重复请求线程ID加速一下下。

参考：

怎样利用进程ID获取主线程ID

线程本地存储 __declspec(thread)

评论这张

转发至微博

阅读(6309)| 评论(0)

历史上的今天

this.p={  m:2,
              b:2,
              loftPermalink:'',
              id:'fks_094070092083087068093094082095086086084069081081082',
              blogTitle:'得到主线程ID',
              blogAbstract:'    多线程应用中通常需要判断当前是否处于主线程中。通过判断当前线程ID是否和主线程ID相等即可实现该功能。<wbr\><blockquote style=\"margin: 0 0 0 40px; border: none; padding: 0px;\"  \><div\><div\>#include <Windows.h></div\><div\>#include <tlhelp32.h></div\><div\><br\></div\><div\>DWORD <b\>GetMainThreadId</b\>(DWORD processId = 0)</div\><div\>{</div\><div\><span style=\"white-space:pre;\"  \> </span\>if(processId == 0)</div\><div\><span style=\"white-space:pre;\"  \>  </span\>processId = <a target=\"_blank\" rel=\"nofollow\" href=\"http://msdn.microsoft.com/en-us/library/ms683183(VS.85).aspx\"  \>GetCurrentProcessId</a\>();</div\><div\><br\></div\><div\></div\></div\></blockquote\>',
              blogTag:'',
              blogUrl:'blog/static/2056574201111021156160',
              isPublished:1,
              istop:false,
              type:0,
              modifyTime:1316923558270,
              publishTime:1297319420435,
              permalink:'blog/static/2056574201111021156160',
              commentCount:0,
              mainCommentCount:0,
              recommendCount:1,
              bsrk:-100,
              publisherId:0,
              recomBlogHome:false,
              currentRecomBlog:false,
              attachmentsFileIds:[],
              vote:{},
              groupInfo:{},
              friendstatus:'none',
              followstatus:'unFollow',
              pubSucc:'',
              visitorProvince:'',
              visitorCity:'',
              visitorNewUser:false,
              postAddInfo:{},
              mset:'000',
              mcon:'',
              srk:-100,
              remindgoodnightblog:false,
              isBlackVisitor:false,
              isShowYodaoAd:false,
              hostIntro:'',
              hmcon:'1',
              selfRecomBlogCount:'0',
              lofter_single:'<iframe width="140" height="560" style="overflow:hidden;" src="http://www.lofter.com/mailEntry.do?blogad=1&blog" frameBorder="0"></iframe>'
            }

{list a as x}
    {if !!x}
    <div class="iblock nbw-fce nbw-f40">
      <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.visitorName}/">
      {if x.visitorName==visitor.userName}
      <img alt="${x.visitorNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.visitorName)}&r=${visitor.imageUpdateTime}"/>
      {else}
      <img alt="${x.visitorNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.visitorName)}"/>
      {/if}
      </a>
      <div class="cwd vname thide">
        {if x.moveFrom=='wap'}
          <a class="noul pnt" target="_blank" href="http://blog.163.com/services/wapblog.html?frompersonalbloghome"><span title="来自网易手机博客" class="iblock wapIcon"> </span></a>
        {elseif x.moveFrom=='iphone'}
          <a class="noul pnt" target="_blank"><span title="来自iPhone客户端" class="iblock iphoneIcon"> </span></a>
        {elseif x.moveFrom=='android'}
          <a class="noul pnt" target="_blank"><span title="来自Android客户端" class="iblock androidIcon"> </span></a>
        {elseif x.moveFrom=='mobile'}
          <a class="noul pnt" target="_blank" href="http://blog.163.com/services/emsblog.html?frompersonalbloghome"><span title="来自网易短信写博" class="iblock wapIcon"> </span></a>
        {/if}
        <a class="fc03 m2a"  target="_blank" hidefocus="true" href="http://blog.163.com/${x.visitorName}/">
          ${fn(x.visitorNickname,8)|escape}
        </a>
      </div>
    </div>
    {/if}
    {/list}

<#--最新日志，群博日志--> <#--推荐日志-->

<p class="fc06">推荐过这篇日志的人：</p>
    <div>
      {list a as x}
      {if !!x}
      <div class="iblock nbw-fce nbw-f40">
        <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.recommenderName}/">
        <img alt="${x.recommenderNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.recommenderName)}"/>
        </a>
        <div class="cwd thide">
          <a class="fc03 m2a" target="_blank" hidefocus="true" href="http://blog.163.com/${x.recommenderName}/">
            ${fn(x.recommenderNickname,6)|escape}
          </a>
        </div>
      </div>
      {/if}
      {/list}
    </div>
    {if !!b&&b.length>0}
    <p  class="fc06">他们还推荐了：</p>
    <ul>
    {list b as y}
      {if !!y}
        <li class="rrb"><span class="iblock">·</span><a class="fc03 m2a" target="_blank" href="http://blog.163.com/${y.recommendBlogPermalink}/?from=blog/static/2056574201111021156160">${y.recommendBlogTitle|escape}</a></li>
      {/if}
    {/list}
    </ul>
    {/if}

<#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇，下一篇--> <#-- 热度 -->

{list a as x}
    {if !!x}
    <div class="hotItem iblock nbw-fce nbw-f40">
      <a class="fc03 noul" target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/">
      {if x.publisherUsername==visitor.userName}
      <img alt="${x.publisherNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.publisherUsername)}&r=${visitor.imageUpdateTime}"/>
      {else}
      <img alt="${x.publisherNickname|escape}" onerror="this.src=location.f40" class="cwd bdwa bdc0" src="${fn1(x.publisherUsername)}"/>
      {/if}
      </a>
      <div class="cwd vname thide">
        <a class="fc03 m2a"  target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/">
          ${fn(x.publisherNickname,8)|escape}
        </a>
      </div>
      <a class="f-myLikeIcons hottype {if x.type==1} js-liketype{elseif x.type==2} js-reblogtype{elseif x.type==3} js-sharetype{else}{/if}" target="_blank" hidefocus="true" href="http://blog.163.com/${x.publisherUsername}/"> </a>
    </div>
    {/if}
    {/list}

<#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->

页脚

我的照片书 - 手机博客 - 下载LOFTER APP - 订阅此博客

秒大刀博客

导航

日志

得到主线程ID

历史上的今天

最近读者

热度

评论

页脚

秒大刀 博客

导航

日志

得到主线程ID

历史上的今天

最近读者

热度

评论

页脚

秒大刀博客