{"id":898,"date":"2014-10-14T16:35:36","date_gmt":"2014-10-14T08:35:36","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=898"},"modified":"2014-10-14T16:36:39","modified_gmt":"2014-10-14T08:36:39","slug":"%e4%b8%b4%e7%95%8c%e3%80%81%e5%a4%9a%e9%87%8d%e8%af%bb%e7%8b%ac%e5%8d%a0%e5%86%99%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%90%8c%e6%ad%a5%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=898","title":{"rendered":"\u4e34\u754c\u3001\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u591a\u7ebf\u7a0b\u540c\u6b65\u6d4b\u8bd5"},"content":{"rendered":"<p>\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u540c\u6b65\u5bf9\u8c61\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u7279\u5b9a\u573a\u5408\uff0c\u6062\u5f18\u4eca\u5929\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b2c\u4e09\u65b9\u7684\u6e90\u7801\uff08\u4eff\u7167Firebird\u6570\u636e\u5e93\u7684\u6e90\u7801\u4e2d\u7684\u7f16\u5199\u7684\uff09\uff0c\u6211\u5199\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\u7a0b\u5e8f\u5bf9\u5176\u6027\u80fd\u8bd5\u56fe\u505a\u4e2a\u5bf9\u6bd4\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u8bf7\u51fa\u53c2\u4e0e\u5bf9\u6bd4\u7684\u56db\u4f4d\u9009\u624b\uff1a<\/p>\n<p>1\u3001\u672c\u6b21\u7684\u79cd\u5b50\u9009\u624b\uff0cFireBird\u62f7\u8d1d\u7248\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u5bf9\u8c61\uff1b<\/p>\n<p>2\u3001Windows\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u5bf9\u8c61\uff1b<\/p>\n<p>3\u3001Sysutils\u5355\u5143\u63d0\u4f9b\u7684\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u5bf9\u8c61\uff1b<\/p>\n<p>4\u3001\u6c38\u4e45\u4eae\u4e3d\u7684\u4e34\u754c\u5bf9\u8c61\uff1b<\/p>\n<p>\u73b0\u5728\uff0c\u8bf4\u660e\u6bd4\u8d5b\u89c4\u5219\uff1a<\/p>\n<p>1\u3001\u4ee58\uff1a2\u7684\u6bd4\u4f8b\u6765\u6267\u884c\u76f8\u540c\u7684\u4ee3\u7801\uff0c\u770b\u603b\u65f6\u95f4\u6765\u786e\u5b9a\u8bfb\u5199\u7684\u6548\u7387\u3002<\/p>\n<p>2\u3001\u8bfb\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9a8c\u8bc1\u6bcf\u4e00\u4e2a\u5b57\u8282\u5185\u5bb9\u662f\u5426\u6b63\u786e\uff0c\u4ee5\u786e\u5b9a\u9501\u672c\u8eab\u662f\u5426\u53ef\u9760\u3002<\/p>\n<p>\u9996\u5148\u8bf7\u51fa\u8bfb\u51fd\u6570\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">procedure TForm5.ReadTest;\r\nvar\r\n  I: Integer;\r\n  C: Byte;\r\nbegin\r\nAtomicIncrement(FReadTimes);\r\nC := FBuffer[0];\r\nfor I := 1 to Length(FBuffer) - 1 do\r\n  begin\r\n  assert(FBuffer[I] = C, 'BufferError');\r\n  end;\r\nend;\r\n<\/pre>\n<p>\u7136\u540e\u8bf7\u51fa\u5199\u51fd\u6570\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">procedure TForm5.WriteTest;\r\nvar\r\n  I: Integer;\r\n  C: Byte;\r\nbegin\r\nC := Random(255);\r\nAtomicIncrement(FWriteTimes);\r\nfor I := 0 to Length(FBuffer) - 1 do\r\n  FBuffer[I] := C;\r\nend;<\/pre>\n<p>\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">procedure TForm5.TestCS(ALoopMgr: TQForJobs; AJob: PQJob; AIndex: NativeInt);\r\nbegin\r\nif (AIndex mod 10) &lt; FReadRatio then\r\n  begin\r\n  FCS.Enter;\r\n  try\r\n    ReadTest;\r\n  finally\r\n    FCS.Leave;\r\n  end;\r\n  end\r\nelse\r\n  begin\r\n  FCS.Enter;\r\n  try\r\n    WriteTest;\r\n  finally\r\n    FCS.Leave;\r\n  end;\r\n  end;\r\nend;\r\n\r\nprocedure TForm5.TestMRSW(ALoopMgr: TQForJobs; AJob: PQJob; AIndex: NativeInt);\r\nbegin\r\nif (AIndex mod 10) &lt; FReadRatio then\r\n  begin\r\n  FMRSW.AcquireReadLock;\r\n  try\r\n    ReadTest;\r\n  finally\r\n    FMRSW.ReleaseReadLock;\r\n  end;\r\n  end\r\nelse\r\n  begin\r\n  FMRSW.AcquireWriteLock;\r\n  try\r\n    WriteTest;\r\n  finally\r\n    FMRSW.ReleaseWriteLock;\r\n  end;\r\n  end;\r\nend;\r\n\r\nprocedure TForm5.TestOS(ALoopMgr: TQForJobs; AJob: PQJob; AIndex: NativeInt);\r\nbegin\r\nif (AIndex mod 10) &lt; FReadRatio then\r\n  begin\r\n  AcquireSRWLockShared(FOS);\r\n  try\r\n    ReadTest;\r\n  finally\r\n    ReleaseSRWLockShared(FOS);\r\n  end;\r\n  end\r\nelse\r\n  begin\r\n  AcquireSRWLockExclusive(FOS);\r\n  try\r\n    WriteTest;\r\n  finally\r\n    ReleaseSRWLockExclusive(FOS);\r\n  end;\r\n  end;\r\n\r\nend;\r\n\r\nprocedure TForm5.TestSysutils(ALoopMgr: TQForJobs; AJob: PQJob;\r\n  AIndex: NativeInt);\r\nbegin\r\nif (AIndex mod 10) &lt; FReadRatio then\r\n  begin\r\n  FRWSync.BeginRead;\r\n  try\r\n    ReadTest;\r\n  finally\r\n    FRWSync.EndRead;\r\n  end;\r\n  end\r\nelse\r\n  begin\r\n  FRWSync.BeginWrite;\r\n  try\r\n    WriteTest;\r\n  finally\r\n    FRWSync.EndWrite;\r\n  end;\r\n  end;\r\nend;<\/pre>\n<p>\u6d4b\u8bd5\u8ba1\u65f6\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">procedure TForm5.WinMRSWClick(Sender: TObject);\r\nvar\r\n  T: Cardinal;\r\nbegin\r\nSetLength(FBuffer, 2048);\r\nFReadTimes := 0;\r\nFWriteTimes := 0;\r\nFReadRatio := SpinEdit1.Value;\r\nT := GetTimeStamp;\r\nTQForJobs.For(0, StrToInt(Edit1.Text) - 1, TestOS);\r\nT := GetTimeStamp - T;\r\nLabel1.Caption := 'API: Read ' + IntToStr(FReadTimes) + ' times ,Write ' +\r\n  IntToStr(FWriteTimes) + ' times,Used Time ' + FloatToStr(T \/ 10) + ' ms';\r\nMemo1.Lines.Add(Label1.Caption);\r\nend;<\/pre>\n<p>\u5176\u5b83\u4e09\u4e2a\u7684\u6d4b\u8bd5\u4ee3\u7801\u53ea\u66f4\u6539\u4e86For\u7684\u56de\u8c03\u51fd\u6570\u548cLabel1.Caption\u7684\u524d\u7f00\u3002<\/p>\n<p>\u73b0\u5728\u5448\u73b0\u4eae\u4e3d\u7684\u5bf9\u6bd4\u7ed3\u679c\uff1a<\/p>\n<p><a href=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-899\" src=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw-300x202.jpg\" alt=\"mrsw\" width=\"300\" height=\"202\" srcset=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw-300x202.jpg 300w, https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw.jpg 463w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>\u597d\u4e86\uff0c\u6211\u4eec\u4ee5\u4e34\u754c\u505a\u4e3a\u57fa\u51c6\uff0c\u5206\u522b\u8ba1\u7b97\u4e0b\u767e\u5206\u6bd4\uff1a<\/p>\n<p>\u672c\u6b21\u79cd\u5b50\u9009\u624b\uff1a(3250-2554.3)*100\/3250=21.4%<\/p>\n<p>Windows API\uff1a(3250-3055.2)*100\/3250=5.99%<\/p>\n<p>Sysutils\u81ea\u5e26\uff1a(3250-2597.5)*100\/3250=20.08%<\/p>\n<p>\u770b\u8d77\u6765\u4e0d\u9519\uff0c\u603b\u662f\u6709\u6240\u63d0\u5347\u3002<strong>\u4f46\u662f\uff0c\u4ffa\u5728\u8fd9\u91cc\u8981\u63d0\u4f9b\u5404\u4f4d\u4e00\u70b9\uff0c\u9985\u997c\u867d\u597d\uff0c\u4f46\u8981\u4f1a\u5403\u3002\u4f7f\u7528\u8fd9\u79cd\u9501\u5b9a\u4f60\u4e00\u5b9a\u8981\u4fdd\u8bc1\uff1a\u8bf7\u6c42\u8bfb\u7684\u60c5\u51b5\u4e0b\uff0c\u5c31\u662f\u7eaf\u8bfb\u53d6\u3002\u4f60\u8981\u786e\u4fdd\u4f60\u7684\u4ee3\u7801\u53ca\u4ee3\u7801\u4e2d\u8c03\u7528\u7684\u51fd\u6570\u4e0d\u4f1a\u5f15\u8d77\u5185\u90e8\u7684\u5199\u64cd\u4f5c\u6539\u53d8\u5185\u5bb9\uff0c\u56e0\u4e3a\u8bfb\u662f\u53ef\u4ee5\u5e76\u884c\u7684\uff0c\u5982\u679c\u4e00\u65e6\u5f15\u8d77\u76f8\u5173\u64cd\u4f5c\uff0c\u540e\u679c\u662f\u4e25\u91cd\u7684\uff0c\u76f8\u5f53\u4e8e\u6ca1\u6709\u540c\u6b65\u5199\u5185\u5bb9\u3002<\/strong>\u5982\u679c\u4f60\u4fdd\u8bc1\u4e0d\u4e86\u8fd9\u4e00\u70b9\uff0c\u8fd8\u662f\u8001\u5b9e\u7684\u4f7f\u7528\u4e34\u754c\u5427\uff0c\u6bd5\u7adf\u8bfb\u5199\u90fd\u4fdd\u62a4\u4e86\uff0c\u65e0\u4fa7\u6f0f\uff0c\u66f4\u5b89\u5168\u3002<\/p>\n<p>\u6211\u4eec\u518d\u770b\u4e00\u4e0b\u8bfb\u5199\u6bd4\u4e3a5:5\u7684\u6d4b\u8bd5\u7ed3\u679c\uff1a<\/p>\n<p><a href=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw5_5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-901\" src=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw5_5-300x202.jpg\" alt=\"mrsw5_5\" width=\"300\" height=\"202\" srcset=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw5_5-300x202.jpg 300w, https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw5_5.jpg 463w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>\u6b64\u65f6\u79cd\u5b50\u9009\u624b\u4f9d\u7136\u5f3a\u52bf\uff0c\u4f46\u9886\u5148\u4f18\u52bf\u5df2\u7ecf\u4e0d\u5927\u4e86\u548cWindow API\u51e0\u4e4e\u4e00\u81f4\uff0c\u800c\u81ea\u5e26\u7684Sysutils\u7684\u540c\u6b65\u5bf9\u8c61\uff0c\u5df2\u7ecf\u88ab\u8fdc\u8fdc\u843d\u4e0b\u4e86\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u53cd\u8fc7\u6765\u8bfb\u5199\u6bd42:8\u7684\u6d4b\u8bd5\u7ed3\u679c\uff0c\u610f\u5916\u7684\u662fWindows API\u6210\u4e86\u51a0\u519b\uff0c\u5176\u5b83\u7684\u90fd\u5df2\u7ecf\u88ab\u4e34\u754c\u8d85\u8fc7\u4e86\u3002<\/p>\n<p><a href=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw28.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-900\" src=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw28-300x202.jpg\" alt=\"mrsw28\" width=\"300\" height=\"202\" srcset=\"https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw28-300x202.jpg 300w, https:\/\/blog.qdac.cc\/wp-content\/uploads\/2014\/10\/mrsw28.jpg 463w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><strong>\u3010\u53cb\u60c5\u63d0\u793a\u3011<\/strong><\/p>\n<p>\u672c\u4eba\u53ea\u5bf9\u672c\u673a\u5668\u4e0a\u672c\u6d4b\u8bd5\u65b9\u6848\u7684\u6d4b\u8bd5\u7ed3\u679c\u8d1f\u8d23\uff0c\u4e0d\u5bf9\u4f60\u548c\u4ed6\u673a\u5668\u4e0a\u7684\u6d4b\u8bd5\u7528\u4f8b\u7684\u7ed3\u679c\u8d1f\u8d23\u3002\u7ed3\u679c\u4ec5\u4f9b\u53c2\u8003\u3002<\/p>\n<p><strong>\u3010\u4e2a\u4eba\u63a8\u8350\u3011<\/strong><\/p>\n<p>\u9664\u975e\u4f60\u80fd\u4fdd\u8bc1\u8bfb\u5199\u662f\u5b8c\u5168\u6b63\u786e\u7684\uff0c\u5426\u5219\u4e34\u754c\u8981\u6bd4\u5176\u5b83\u7684\u66f4\u5b89\u5168\u4e00\u4e9b\u3002\u5b89\u5168\u7b2c\u4e00\uff0c\u4e0d\u662f\u5417\uff1f<\/p>\n<p><strong>\u3010\u4e0b\u8f7d\u3011<\/strong><\/p>\n<p><a href=\"http:\/\/pan.baidu.com\/s\/1ntslNE5\" target=\"_blank\">\u6d4b\u8bd5\u7a0b\u5e8f\uff08\u9700\u8981Vista+\uff09<\/a> <a href=\"http:\/\/pan.baidu.com\/s\/1hqpEeDe\" target=\"_blank\">\u6d4b\u8bd5\u6e90\u7801\uff08\u57fa\u4e8eXE7\uff09<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u91cd\u8bfb\u72ec\u5360\u5199\u540c\u6b65\u5bf9\u8c61\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u7279\u5b9a [&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":[109,112,108,20,110,111],"class_list":["post-898","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-misc","tag-109","tag-112","tag-108","tag-20","tag-110","tag-111"],"views":5029,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/898","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=898"}],"version-history":[{"count":3,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/898\/revisions"}],"predecessor-version":[{"id":904,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/898\/revisions\/904"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}