{"id":119,"date":"2014-08-24T03:49:39","date_gmt":"2014-08-23T19:49:39","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=119"},"modified":"2014-09-29T21:29:17","modified_gmt":"2014-09-29T13:29:17","slug":"qworker%e8%87%aa%e5%ae%9a%e4%b9%89%e4%bd%9c%e4%b8%9a%e6%95%b0%e6%8d%ae%e6%8c%87%e9%92%88%e9%87%8a%e6%94%be%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=119","title":{"rendered":"QWorker\u81ea\u5b9a\u4e49\u4f5c\u4e1a\u6570\u636e\u6307\u9488\u91ca\u653e\u65b9\u6cd5"},"content":{"rendered":"<p style=\"color: #454545;\">QWorker\u4eca\u5929\u7684\u66f4\u65b0\u52a0\u5165jdfFreeAsC1~C6\u662f\u4e3a\u4e86\u5e94\u5bf9C++\u4e2d\u4e30\u5bcc\u7684\u5185\u5b58\u5206\u914d\u548c\u7ba1\u7406\u65b9\u5f0f\uff0c\u63d0\u4f9b\u4e866\u79cd\u81ea\u5b9a\u7684\u7684\u5904\u7406\u65b9\u5f0f\u4f9b\u7528\u6237\u9009\u62e9\u3002\u5f53\u7136Delphi\u4f60\u8981\u81ea\u5df1\u53bb\u7ba1\u7406\u4e00\u4e9b\u4e1c\u897f\uff0c\u4e5f\u4e00\u6837\u53ef\u4ee5\u7528\uff0c\u6bd4\u5982\u5c06Data\u6307\u5411\u4e00\u4e2a\u6c60\u4e2d\u7684\u5bf9\u8c61\uff0c\u7136\u540e\u5728\u91ca\u653e\u65f6\u8fd4\u56de\u5230\u6c60\u4e2d\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u5199\u7684\u662f\u9488\u5bf9C++\u7684\uff0c\u5982new\/delete,new[]\/delete[],malloc\/alloc\/free\/,LocalAlloc\/LocalFree\u7b49\u7b49\uff0c\u4e2a\u4eba\u89c9\u5f97\u5bf9\u4e8e\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u6765\u8bf4\uff0c6\u79cd\u81ea\u5b9a\u4e49\u7684\u65b9\u5f0f\uff0c\u5e94\u8be5\u662f\u591f\u7528\u4e86\u3002<\/p>\n<p style=\"color: #454545;\">\u3010\u793a\u4f8b\u3011<\/p>\n<p style=\"color: #454545;\">\u4e0b\u9762\u7684\u4f8b\u5b50\u5c06jdfFreeAsC1\u5bf9\u5e94\u4e86new\/delete\uff0cjdfFreeAsC2\u5bf9\u5e94\u4e8enew[]\/delete[]\uff0c\u5148\u5b9e\u73b0\u4e00\u4e2a\u5168\u5c40\u51fd\u6570\uff0c\u7528\u6765\u5173\u8054\u5230Workers\u7684OnCustomFreeData\u3002<\/p>\n<div style=\"color: #454545;\">\n<pre class=\"lang:c++ decode:true\">void\u00a0__fastcall FreeDataByNew(TQWorkers* ASender, TQJobDataFreeType AFreeType,\r\n\u00a0\u00a0const\u00a0void\u00a0* AData)\r\n{\r\n\u00a0\u00a0\u00a0\u00a0switch\u00a0(AFreeType)\r\n\u00a0\u00a0\u00a0\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0case\u00a0jdtFreeAsC1:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0delete\u00a0AData;\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break;\r\n\u00a0\u00a0\u00a0\u00a0case\u00a0jdfFreeAsC2:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0delete[]AData;\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break;\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n<p>\u5728\u6295\u5bc4\u76f8\u5173\u7c7b\u578b\u7684Data\u53c2\u6570\u4e4b\u524d\uff0c\u8981\u6ce8\u518c\u4e8b\u4ef6\u5173\u8054\uff1a<\/p>\n<\/div>\n<div style=\"color: #454545;\">\n<pre class=\"lang:c++ decode:true\">__fastcall TForm3::TForm3(TComponent* Owner) : TForm(Owner)\r\n{\r\nWorkers-&gt;OnCustomFreeData=FreeDataByNew;\r\n}<\/pre>\n<p>\u73b0\u5728\u53ef\u4ee5\u6309\u7167\u5e38\u89c4\u7684\u65b9\u5f0f\u6295\u5bc4\u5e76\u81ea\u52a8\u91ca\u653e\u5185\u5b58\u4e86\u3002<\/p>\n<\/div>\n<div style=\"color: #454545;\">\n<pre class=\"lang:c++ decode:true\">void\u00a0__fastcall TForm3::Button2Click(TObject *Sender)\r\n{\r\n\u00a0\u00a0\u00a0\u00a0char\u00a0*p =\u00a0new\u00a0char[2];\r\n\u00a0\u00a0\u00a0\u00a0p[0] =\u00a0'A';\r\n\u00a0\u00a0\u00a0\u00a0p[1] =\u00a0'0';\r\n\u00a0\u00a0\u00a0\u00a0Workers-&gt;Post(DoPostJobDone, p, True, jdfFreeAsC2);\r\n}\r\n\u00a0\r\nvoid\u00a0__fastcall TForm3::DoPostJobDone(TQJob *AJob)\r\n{\r\n\u00a0\u00a0\u00a0\u00a0ShowMessage(L\"\u4f5c\u4e1a\u6295\u5bc4\u5230\u6267\u884c\u7528\u65f6 \"\u00a0+ IntToStr((GetTimestamp() - AJob-&gt;PushTime) \/ 10)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0+ L\" ms\");\r\n}<\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u7684DoPostJobDone\u6ca1\u6709\u505a\u4efb\u4f55\u5bf9AJob-&gt;Data\u6210\u5458\u7684\u5904\u7406\uff0c\u800c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8c03\u7528FreeDataByNew\u53bb\u91ca\u653e\u4e0a\u9762\u4ee3\u7801\u4e2d\u5206\u914d\u7684p\u6307\u9488\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>QWorker\u4eca\u5929\u7684\u66f4\u65b0\u52a0\u5165jdfFre [&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":[69,8,6],"tags":[31,33,32],"class_list":["post-119","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-qworker","tag-c","tag-delete","tag-new"],"views":4272,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/119","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=119"}],"version-history":[{"count":2,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":810,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/119\/revisions\/810"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}