{"id":2349,"date":"2015-04-24T09:07:38","date_gmt":"2015-04-24T01:07:38","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=2349"},"modified":"2015-04-24T10:05:06","modified_gmt":"2015-04-24T02:05:06","slug":"%e8%8e%b7%e5%be%97%e5%bd%93%e5%89%8d%e8%bf%9b%e7%a8%8bcpu%e4%bd%bf%e7%94%a8%e7%8e%87","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=2349","title":{"rendered":"\u83b7\u5f97\u5f53\u524d\u8fdb\u7a0b\/\u7ebf\u7a0b CPU \u4f7f\u7528\u7387"},"content":{"rendered":"<p>\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u6392\u9664\u5176\u5b83\u8fdb\u7a0b\u7684\u5f71\u54cd\uff0c\u5355\u770b\u81ea\u5df1\u7684\u8fdb\u7a0b\u7684CPU\u5360\u7528\u7387\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u7cfb\u7edf\u7684CPU\u5360\u7528\u7387\uff0c\u90a3\u4e48\u6211\u4eec\u8be5\u5982\u4f55\u770b\u5462\uff1fWindows \u63d0\u4f9b\u4e86\u4e00\u4e2a API GetProcessTimes \u6765\u83b7\u5f97\u8fdb\u7a0b\u7684\u4f7f\u7528\u65f6\u95f4\u4fe1\u606f\uff0c\u6211\u4eec\u7b80\u5355\u5c01\u88c5\u4e86\u4e0b\u63d0\u4f9b\u7ed9\u5927\u5bb6\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">type\r\n  TProcessCpuUsage = record\r\n  private\r\n    FLastUsed, FLastTime: Int64;\r\n    FCpuCount:Integer;\r\n  public\r\n    class function Create: TProcessCpuUsage; static;\r\n    function Current: Single;\r\n  end;\r\n\r\nvar\r\n  ProcessCpuUsage: TProcessCpuUsage = (FLastUsed: 0; FLastTime: 0;FCpuCount:0);\r\n\r\n{ TProcessCpuUsage }\r\n\r\nclass function TProcessCpuUsage.Create: TProcessCpuUsage;\r\nbegin\r\n  Result.FLastTime := 0;\r\n  Result.FLastUsed := 0;\r\n  Result.FCpuCount := 0;\r\nend;\r\n\r\nfunction TProcessCpuUsage.Current: Single;\r\nvar\r\n  Usage, ACurTime: UInt64;\r\n  CreateTime, ExitTime, IdleTime, UserTime, KernelTime: TFileTime;\r\n  function FileTimeToI64(const ATime: TFileTime): Int64;\r\n  begin\r\n    Result := (Int64(ATime.dwHighDateTime) shl 32) + ATime.dwLowDateTime;\r\n  end;\r\n  function GetCPUCount: Integer;\r\n  var\r\n    SysInfo: TSystemInfo;\r\n  begin\r\n    GetSystemInfo(SysInfo);\r\n    Result := SysInfo.dwNumberOfProcessors;\r\n  end;\r\n\r\nbegin\r\n  Result := 0;\r\n  if GetProcessTimes(GetCurrentProcess, CreateTime, ExitTime, KernelTime,\r\n    UserTime) then\r\n  begin\r\n    ACurTime := GetTickCount;\r\n    Usage := FileTimeToI64(UserTime) + FileTimeToI64(KernelTime);\r\n    if FLastTime &lt;&gt; 0 then\r\n      Result := (Usage - FLastUsed) \/ (ACurTime - FLastTime) \/\r\n        FCpuCount \/ 100\r\n    else\r\n      FCpuCount:=GetCpuCount;\r\n    FLastUsed := Usage;\r\n    FLastTime := ACurTime;\r\n  end;\r\nend;\r\n<\/pre>\n<p>\u5177\u4f53\u7528\u6cd5\u5c31\u5f88\u7b80\u5355\u4e86\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u6bcf\u79d2\u89e6\u53d1\u4e00\u6b21\u7684Timer\uff0c\u7136\u540e\u53d6\u5168\u5c40\u53d8\u91cfProcessCpuUsage.Current \u7684\u503c\u5c31\u662f\u8fdb\u7a0b\u81ea\u8eab\u7684 CPU \u00a0\u4f7f\u7528\u7387\u4e86\uff0c\u7b80\u5355\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">procedure TForm1.Timer1Timer(Sender: TObject);\r\nbegin\r\n  Caption := 'CPU:' + FormatFloat('0.##', ProcessCpuUsage.Current) + '%';\r\nend;<\/pre>\n<p>\u8fd9\u4e2a\u4ee3\u7801\u662f\u4ece QWorker\u00a0 \u7684\u6f14\u793a\u7a0b\u5e8f\u4e2d\u62a0\u51fa\u6765\u91cd\u5199\u7684\uff0c\u79fb\u9664\u4e86\u4e0e QDAC \u76f8\u5173\u7684\u4ee3\u7801\uff0c\u7406\u8bba\u4e0a\u80fd\u591f\u7528\u4e8e\u4efb\u610f\u7248\u672c\u7684 Delphi \u91cc\u3002<\/p>\n<p>\u5982\u679c\u8981\u83b7\u53d6\u7ebf\u7a0b\u7684 CPU \u4f7f\u7528\u60c5\u51b5\uff0c\u53ea\u9700\u8981\u5c06\u5176\u4e2d\u7684 GetProcessTimes \u66ff\u6362\u4e3a GetThreadTimes \u5373\u53ef\uff0c\u5269\u4e0b\u7684\u4ee3\u7801\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u7ebf\u7a0b\u7248\u672c\uff08\u548c\u4e0a\u9762\u5b9e\u9645\u5c31\u5dee\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u5e76\u5728Create\u51fd\u6570\u4e2d\u9ed8\u8ba4\u8c03\u7528\u4e86\u4e00\u6b21Current\u51fd\u6570\u4ee5\u521d\u59cb\u5316\u672b\u6b21\u7684CPU\u4f7f\u7528\u65f6\u95f4\uff0c\u4ee5\u4fbf\u4e0b\u4e00\u6b21\u7edf\u8ba1\uff09<\/p>\n<pre class=\"lang:delphi decode:true\">TThreadCpuUsage = record\r\n  private\r\n    FLastUsed, FLastTime: Int64;\r\n    FCpuCount: Integer;\r\n  public\r\n    class function Create: TThreadCpuUsage; static;\r\n    function Current: Single;\r\n  end;\r\n{ TThreadCpuUsage }\r\n\r\nclass function TThreadCpuUsage.Create: TThreadCpuUsage;\r\nbegin\r\n  Result.FLastTime := 0;\r\n  Result.FLastUsed := 0;\r\n  Result.FCpuCount := 0;\r\n  Result.Current;\r\nend;\r\n\r\nfunction TThreadCpuUsage.Current: Single;\r\nvar\r\n  Usage, ACurTime: UInt64;\r\n  CreateTime, ExitTime, IdleTime, UserTime, KernelTime: TFileTime;\r\n  function FileTimeToI64(const ATime: TFileTime): Int64;\r\n  begin\r\n    Result := (Int64(ATime.dwHighDateTime) shl 32) + ATime.dwLowDateTime;\r\n  end;\r\n  function GetCPUCount: Integer;\r\n  var\r\n    SysInfo: TSystemInfo;\r\n  begin\r\n    GetSystemInfo(SysInfo);\r\n    Result := SysInfo.dwNumberOfProcessors;\r\n  end;\r\n\r\nbegin\r\n  Result := 0;\r\n  if GetThreadTimes(GetCurrentThread, CreateTime, ExitTime, KernelTime,\r\n    UserTime) then\r\n  begin\r\n    ACurTime := GetTickCount;\r\n    Usage := FileTimeToI64(UserTime) + FileTimeToI64(KernelTime);\r\n    if FLastTime &lt;&gt; 0 then\r\n      Result := (Usage - FLastUsed) \/ (ACurTime - FLastTime) \/ FCpuCount \/ 100\r\n    else\r\n      FCpuCount := GetCPUCount;\r\n    FLastUsed := Usage;\r\n    FLastTime := ACurTime;\r\n  end;\r\nend;<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u6392\u9664\u5176\u5b83\u8fdb\u7a0b\u7684\u5f71\u54cd\uff0c\u5355\u770b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8,21],"tags":[394,395,288,393],"class_list":["post-2349","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-misc","tag-cpu","tag-395","tag-288","tag-393"],"views":6604,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2349"}],"version-history":[{"count":6,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2349\/revisions"}],"predecessor-version":[{"id":2355,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2349\/revisions\/2355"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}