{"id":1018,"date":"2014-10-26T20:02:48","date_gmt":"2014-10-26T12:02:48","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=1018"},"modified":"2014-10-27T10:25:54","modified_gmt":"2014-10-27T02:25:54","slug":"qworker%e6%9b%b4%e6%96%b0-%e6%96%b0%e5%a2%9e%e5%9f%ba%e4%ba%8e%e4%bd%9c%e4%b8%9a%e8%bf%87%e7%a8%8b%e7%9a%84%e5%88%9d%e5%a7%8b%e5%8c%96%e5%92%8c%e9%87%8a%e6%94%be%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=1018","title":{"rendered":"QWorker\u66f4\u65b0-\u65b0\u589e\u57fa\u4e8e\u4f5c\u4e1a\u8fc7\u7a0b\u7684\u521d\u59cb\u5316\u548c\u91ca\u653e\u65b9\u6cd5"},"content":{"rendered":"<h4>\u3010\u66f4\u65b0\u5185\u5bb9\u3011<\/h4>\n<p>\u65b0\u589e\u4e86\u4e00\u4e2aTQJobExtData\u5bf9\u8c61\u7c7b\u578b\u4ee5\u8f85\u52a9\u7528\u6237\u6765\u521b\u5efa\u4e00\u4e2a\u81ea\u52a8\u91ca\u653e\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5b83\u6709\u533f\u540d\u7248\u672c\uff0c\u5728\u652f\u6301\u533f\u540d\u51fd\u6570\u7684Delphi 2009\u4ee5\u4e0a\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u76f4\u89c2\u7684\u7f16\u5199\u521d\u59cb\u5316\u548c\u91ca\u653e\u8fc7\u7a0b\u3002<\/p>\n<p>\u4e00\u3001\u6784\u9020\u51fd\u6570\u7684\u58f0\u660e<\/p>\n<pre class=\"lang:delphi decode:true\">constructor Create(AData: Pointer; AOnFree: TQExtFreeEvent); overload;\r\nconstructor Create(AOnInit: TQExtInitEvent;AOnFree: TQExtFreeEvent); overload;\r\n\r\nconstructor Create(const Value: Int64); overload;\r\nconstructor Create(const Value: Integer); overload;\r\nconstructor Create(const Value: Boolean); overload;\r\nconstructor Create(const Value: Double); overload;\r\nconstructor CreateAsDateTime(const Value: TDateTime); overload;\r\nconstructor Create(const S: QStringW); overload;\r\n{$IFNDEF NEXTGEN}\r\nconstructor Create(const S: AnsiString); overload;\r\n{$ENDIF}\r\n\r\n{$IFDEF UNICODE}\r\nconstructor Create(AData: Pointer; AOnFree: TQExtFreeEventA); overload;\r\nconstructor Create(AOnInit: TQExtInitEventA;AOnFree: TQExtFreeEventA); overload;\r\n{$ENDIF}\r\n<\/pre>\n<p>1\u3001\u975e\u533f\u540d\u51fd\u6570\u7248\u672c<\/p>\n<p>\u7b2c\u4e00\u79cd\u5f62\u5f0f\u7684\u58f0\u660e\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6269\u5c55\u6570\u636e\u6210\u5458\u548c\u4e00\u4e2a\u91ca\u653e\u6269\u5c55\u6570\u636e\u6210\u5458\u7684\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\uff0c\u4e0b\u9762\u7684\u4f8b\u5b50\u6f14\u793a\u4e86\u8fd9\u79cd\u4ee3\u7801\u7684\u4f7f\u7528\u65b9\u5f0f\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">var\r\n  AData: PComplexRecord;\r\nbegin\r\nNew(AData);\r\n...\u521d\u59cb\u5316AData\u6210\u5458\u4ee3\u7801\u7565...\r\nWorkers.Post(DoNullJob, TQJobExtData.Create(AData, DoFreeComplexRecord), false,\r\n  jdfFreeAsObject);\r\nend;<\/pre>\n<p>\u7b2c\u4e8c\u79cd\u5f62\u5f0f\u5141\u8bb8\u60a8\u81ea\u5df1\u7528\u8fc7\u7a0b\u6765\u521d\u59cb\u5316\u6570\u636e\u6210\u5458\u548c\u91ca\u653e\u4e8b\u4ef6\uff0c\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">procedure TForm1.DoCreateComplex(var AData: Pointer);\r\nvar\r\n  S: PComplexRecord;\r\nbegin\r\nNew(S);\r\nS.Name := 'Hello,QDAC';\r\nS.Age := 3;\r\nSetLength(S.Temp, 2);\r\nAData := S;\r\nend;\r\n\r\nprocedure TForm1.DoFreeComplexRecord(AData: Pointer);\r\nbegin\r\nDispose(PComplexRecord(AData));\r\nend;\r\n...\r\nWorkers.Post(DoNullJob, TQJobExtData.Create(DoCreateComplex,\r\n  DoFreeComplexRecord), false, jdfFreeAsObject);\r\n...<\/pre>\n<p>&nbsp;<\/p>\n<p>2\u3001\u57fa\u672c\u7c7b\u578b\u7248\u672c<\/p>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u65e5\u5e38\u4f7f\u7528\uff0c\u9ed8\u8ba4\u63d0\u4f9b\u4e86\u5b57\u7b26\u4e32\uff08Unicode\u548cAnsi\u7248\u672c\uff09\u3001\u6574\u6570\u300164\u4f4d\u6574\u6570\u3001\u6d6e\u70b9\u3001\u65e5\u671f\u65f6\u95f4\u7b49\u7c7b\u578b\u7684\u652f\u6301\uff0c\u76f8\u5e94\u7684\u7c7b\u578b\u5df2\u7ecf\u63d0\u4f9b\u4e86\u9ed8\u8ba4\u7684\u91ca\u653e\u51fd\u6570\uff0c\u4f7f\u7528\u65f6\u53ea\u9700\u8981\u4f20\u9012\u7c7b\u578b\u7684\u503c\u4f5c\u4e3a\u53c2\u6570\u5c31\u53ef\u4ee5\u3002<\/p>\n<pre class=\"lang:delphi decode:true\">Workers.Post(DoNullJob, TQJobExtData.Create('Hello,world of QDAC'), false,\r\n  jdfFreeAsObject);<\/pre>\n<p>3\u3001\u533f\u540d\u51fd\u6570\u7248\u672c<\/p>\n<p>\u5bf9\u4e8e\u590d\u6742\u7ed3\u6784\u4f53\u7b49\u7c7b\u578b\uff0c\u4f7f\u7528\u533f\u540d\u51fd\u6570\u7248\u672c\u53ef\u4ee5\u66f4\u76f4\u89c2\u65b9\u4fbf\u4e00\u4e9b\uff0c\u4f46\u8c612007\u7b49\u65e9\u671f\u7248\u672c\u5e76\u4e0d\u652f\u6301\u533f\u540d\u51fd\u6570\uff0c\u5c31\u53ea\u80fd\u4f7f\u7528\u975e\u533f\u540d\u51fd\u6570\u7684\u7248\u672c\u3002<\/p>\n<p>\u7b2c\u4e00\u79cd\u5f62\u5f0f\u548c\u975e\u533f\u540d\u51fd\u6570\u7248\u672c\u4e00\u6837\uff0c\u53ea\u6709\u91ca\u653e\u8fc7\u7a0b\uff0c\u521d\u59cb\u5316\u7531\u5916\u90e8\u4ee3\u7801\u6b63\u5e38\u521d\u59cb\u5316\u3002<\/p>\n<pre class=\"lang:delphi decode:true\">New(AData);\r\nWorkers.Post(DoNullJob, TQJobExtData.Create(AData,\r\n  procedure(AData: Pointer)\r\n  begin\r\n  Dispose(PComplexRecord(AData));\r\n  end), false, jdfFreeAsObject);\r\n<\/pre>\n<p>\u7b2c\u4e8c\u79cd\u5f62\u5f0f\u4e5f\u548c\u533f\u540d\u51fd\u6570\u7248\u672c\uff0c\u6709\u521d\u59cb\u5316\u548c\u91ca\u653e\u8fc7\u7a0b\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">\/\/ \u4f7f\u7528\u533f\u540d\u51fd\u6570\u521d\u59cb\u5316\u548c\u91ca\u653e\r\nWorkers.Post(DoNullJob, TQJobExtData.Create(\r\n  procedure(var AData: Pointer)\r\n  var\r\n    S: PComplexRecord;\r\n  begin\r\n  New(S);\r\n  S.Name := 'Hello';\r\n  S.Age := 11;\r\n  SetLength(S.Temp, 2);\r\n  AData := S;\r\n  end,\r\n  procedure(AData: Pointer)\r\n  begin\r\n  Dispose(PComplexRecord(AData));\r\n  end), false, jdfFreeAsObject);<\/pre>\n<p>\u3010\u6ce8\u610f\u3011\u4e0a\u9762\u5b9e\u9645\u4e0a\u662f\u521b\u5efa\u4e86\u4e00\u4e2a\u8f85\u52a9\u7684\u5bf9\u8c61\u6765\u7ba1\u7406\u751f\u547d\u5468\u671f\uff0c\u56e0\u6b64\uff0c\u5fc5\u9700\u6307\u5b9a\u91ca\u653e\u65b9\u5f0f\u4ee5\u4fbf\u4f5c\u4e1a\u80fd\u591f\u81ea\u52a8\u91ca\u653e\u76f8\u5173\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u4e8c\u3001\u8bbf\u95ee\u6269\u5c55\u6570\u636e<\/p>\n<p>\u6211\u4eec\u4f7f\u7528TQJobExtData\u7c7b\u578b\u66ff\u6362\u4e86Data\u6210\u5458\u7684\u503c\uff0c\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5728\u4f5c\u4e1a\u8fc7\u7a0b\u4e2d\u8bbf\u95ee\u6570\u636e\u6210\u5458\u65f6\uff0c\u4e5f\u9700\u8981\u7a0d\u505a\u53d8\u901a\uff0c\u4e0d\u662f\u8bbf\u95eeTQJob\u7684Data\u6210\u5458\uff0c\u800c\u662fExtData\u6210\u5458\uff0c\u5e76\u8bbf\u95ee\u5176\u76f8\u5173\u7684\u5c5e\u6027\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">property Origin: Pointer read FOrigin;\r\nproperty AsString: QStringW read GetAsString write SetAsString;\r\nproperty AsAnsiString: AnsiString read GetAsAnsiString write SetAsAnsiString;\r\nproperty AsInteger: Integer read GetAsInteger write SetAsInteger;\r\nproperty AsInt64: Int64 read GetAsInt64 write SetAsInt64;\r\nproperty AsFloat: Double read GetAsDouble write SetAsDouble;\r\nproperty AsBoolean: Boolean read GetAsBoolean write SetAsBoolean;\r\nproperty AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;<\/pre>\n<p>\u7b80\u8981\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n<p>Origin\uff1a\u662f\u7528\u6237\u539f\u59cb\u4f20\u5165\u7684\u6307\u9488\u5730\u5740 \uff0c\u5982\u679c\u662f\u6784\u9020\u51fd\u6570\u91cd\u8f7d\u5b9e\u73b0\u7684\u57fa\u672c\u7c7b\u578b\uff0c\u5219\u662f\u5185\u90e8\u7684\u539f\u59cb\u6307\u9488\u5730\u5740\uff0c\u4e0d\u8981\u5c1d\u8bd5\u624b\u52a8\u91ca\u653e\u5b83\uff0c\u5b83\u4f1a\u5728TQJobExtData\u5bf9\u8c61\u91ca\u653e\u65f6\u81ea\u52a8\u8c03\u7528OnFree\u56de\u8c03\u51fd\u6570\u5b8c\u6210\u91ca\u653e\u8fc7\u7a0b\u3002<\/p>\n<p>AsString\uff1a\u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const S:QStringW)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u6269\u5c55\u5b57\u7b26\u4e32\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsAnsiString:\u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const S:AnsiString)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5bf9\u6269\u5c55\u5b57\u7b26\u4e32\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsInteger : \u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const AValue:Integer)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u6570\u503c\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsInt64:\u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const AValue:Int64)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u6570\u503c\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsFloat:\u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const AValue:Double)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u6570\u503c\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsBoolean:\u5f53\u4f60\u4f7f\u7528TQJobExtData.Create(const AValue:Boolean)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p>AsDateTime:\u5f53\u4f60\u4f7f\u7528TQJobExtData.CreateAsDateTime(const AValue:Integer)\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u521b\u5efa\u65f6\uff0c\u901a\u8fc7\u5b83\u5bf9\u5185\u5bb9\u8bbf\u95ee\u3002<\/p>\n<p><span style=\"color: #ff0000;\"><strong>\u3010\u6ce8\u610f\u3011\u4e00\u5b9a\u8981\u4fdd\u8bc1\u8bbf\u95ee\u65b9\u5f0f\u548c\u6784\u9020\u65b9\u5f0f\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u5426\u5219\u53ef\u80fd\u53d1\u751f\u9519\u8bef\u3002<\/strong><\/span><\/p>\n<h4>\u3010\u66f4\u65b0\u7ea7\u522b\u3011<\/h4>\n<p>\u53ef\u9009<\/p>\n<h4>\u3010\u7279\u522b\u611f\u8c22\u3011<\/h4>\n<p>\u6062\u5f18<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u66f4\u65b0\u5185\u5bb9\u3011 \u65b0\u589e\u4e86\u4e00\u4e2aTQJobExt [&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":[69,8,9,6,2],"tags":[],"class_list":["post-1018","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-qdac","category-qworker","category-update"],"views":6647,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1018","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=1018"}],"version-history":[{"count":5,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1018\/revisions"}],"predecessor-version":[{"id":1024,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1018\/revisions\/1024"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}