{"id":5591,"date":"2022-08-24T15:28:13","date_gmt":"2022-08-24T07:28:13","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=5591"},"modified":"2022-08-25T09:59:35","modified_gmt":"2022-08-25T01:59:35","slug":"zbarcalcperf-%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=5591","title":{"rendered":"[ZBar]CalcPerf \u51fd\u6570"},"content":{"rendered":"\n<p>\u6240\u5728\u5355\u5143\uff1azbar.common<\/p>\n\n\n\n<p>\u51fd\u6570\u529f\u80fd\uff1a\u8ba1\u7b97\u5f53\u524d\u4ee3\u7801\u6bb5\u7684\u6267\u884c\u65f6\u957f\uff08\u5355\u4f4d\u4e3a\u7eb3\u79d2\uff09<\/p>\n\n\n\n<p>\u51fd\u6570\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>AHint\uff1a\u8f93\u51fa\u6027\u80fd\u65e5\u5fd7\u65f6\u7684\u63d0\u793a\u5b57\u7b26\u4e32<\/li><li>ACallback\uff1a\u5f53\u524d\u4ee3\u7801\u6267\u884c\u5b8c\u6210\u65f6\u7684\u56de\u8c03\u51fd\u6570\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\uff0c\u5219\u8c03\u7528 DefaultPerformanceCallback \u8f93\u51fa\u65e5\u5fd7\u3002<\/li><\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\uff1a\u8fd4\u56de\u5f53\u524d\u7528\u4e8e\u8ba1\u7b97\u5e94\u7528\u6027\u80fd\u7684\u5bf9\u8c61\u5b9e\u4f8b\u63a5\u53e3\uff0c\u5982\u679c EnablePerfCounter \u4e3a false\uff0c\u5219\u8fd4\u56de\u7684\u662f\u56fa\u5b9a\u7684\u6027\u80fd\u8ba1\u6570\u5668\uff0c\u5176\u64cd\u4f5c\u8fd4\u56de\u7684 EscapedTime \u5c5e\u6027\u4e3a\u5e94\u7528\u542f\u52a8\u5230\u73b0\u5728\u7684\u65f6\u95f4\u5dee<\/p>\n\n\n\n<p>\u5907\u6ce8\uff1a\u4e0e QLog \u4e2d\u7684 CalcPerf \u76f8\u6bd4\uff0c\u589e\u52a0\u4e86\u56de\u8c03\uff0c\u4ee5\u4fbf\u7528\u6237\u51b3\u5b9a\u8f93\u51fa\u5185\u5bb9\u548c\u65b9\u5f0f\uff0c\u800c\u4e14\u589e\u52a0\u53d7EnabledPerfCounter \u9650\u5236\uff0c\u5f53 EnabledPerfCounter \u4e3a false\uff08Debug \u6a21\u5f0f\u9ed8\u8ba4\u4e3a true\uff0cRelease \u6a21\u5f0f\u9ed8\u8ba4\u4e3a false\uff09\uff0c\u5b9e\u9645\u4e0d\u8fdb\u884c\u6027\u80fd\u7edf\u8ba1\uff0c\u4ee5\u51cf\u5c11\u5bf9\u4ee3\u7801\u7684\u6027\u80fd\u5f71\u54cd<\/p>\n\n\n\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<p>1\u3001\u57fa\u672c\u7528\u6cd5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>try\n  CalcPerf('Try used time');\n  ...\nfinally\nend;<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5728\u8c03\u8bd5\u65f6\uff0c\u5c06\u5728 IDE \u7684 Events \u8f93\u51fa Try used time => 100ns \u7c7b\u4f3c\u7684\u5b57\u6837\u3002\u6ce8\u610f\u53ea\u7edf\u8ba1\u7684\u662f\u76f8\u5e94\u7684\u4ee3\u7801\u6bb5\u7684\u6027\u80fd\uff0c\u56e0\u6b64\uff0c\u8981\u5c06\u51fd\u6570\u653e\u5230\u6b63\u786e\u7684\u4f5c\u7528\u57df\u8303\u56f4\u4e0a\u3002<\/p>\n\n\n\n<p>2\u3001\u81ea\u5b9a\u4e49\u9ed8\u8ba4\u8f93\u51fa<\/p>\n\n\n\n<p>\u7528\u6237\u53ef\u4ee5\u4e3a DefaultPerformanceCallback \u6307\u5b9a\u4e00\u4e2a\u533f\u540d\u56de\u8c03\u51fd\u6570\uff0c\u8fd9\u6837\u4e0a\u8ff0\u4ee3\u7801\u8f93\u51fa\u65f6\u4f1a\u56de\u8c03\u5bf9\u5e94\u7684\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u8c03\u7528\u7cfb\u7edf\u9ed8\u8ba4\u7684\u6027\u80fd\u8f93\u51fa\u51fd\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DefaultPerformanceCallback := procedure(APerf: IZPerformance)\n  var\n    APerfText: String;\n  begin\n    APerfText := Format('%s \u7528\u65f6 %d ns', &#91;APerf.Hint, APerf.EscapedTime]);\n    TThread.ForceQueue(nil,\n      procedure\n      begin\n        OutputDebugString(PChar(APerfText));\n      end);\n  end;<\/code><\/pre>\n\n\n\n<p>\u5982\u4e0a\u6307\u5b9a\u4e86\u4eba\u7684\u8f93\u51fa\u51fd\u6570\uff0c\u5219\u8fd0\u884c\u65f6\u5c06\u5728 IDE \u7684 Events \u4e2d\u8f93\u51fa Try used time \u7528\u65f6 100ns \u7c7b\u4f3c\u7684\u5b57\u6837\u3002\u540c\u6837\u60a8\u53ef\u4ee5\u5728\u5176\u4e2d\u6307\u5b9a\u8f93\u51fa\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u5177\u4f53\u5c31\u53d6\u51b3\u4e8e\u4f60\u81ea\u5df1\u7684\u5b9e\u73b0\uff0c\u9ed8\u8ba4\u5b9e\u73b0\u662f\u5f02\u6b65\u5199\u5165\u7cfb\u7edf\u65e5\u5fd7\u6216\u63a7\u5236\u53f0\uff0c\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u64cd\u4f5c\u7cfb\u7edf\u7c7b\u578b\u3002<\/p>\n\n\n\n<p>3\u3001\u5355\u72ec\u63a7\u5236\u67d0\u4e00\u65e5\u5fd7\u7684\u8f93\u51fa<\/p>\n\n\n\n<p>\u8fd9\u91cc\u6709\u4e24\u79cd\u65b9\u5f0f\uff0c\u4e00\u79cd\u662f\u6307\u5b9a CalcPerf \u51fd\u6570\u7684\u56de\u8c03\u51fd\u6570\uff0c\u7136\u540e\u4f1a\u81ea\u52a8\u8c03\u7528\u3002\u53e6\u4e00\u79cd\u5c31\u662f\u76f4\u63a5\u5c06 CalcPerf \u7684\u8fd4\u56de\u503c\uff0c\u4fdd\u5b58\u4e0b\u6765\uff0c\u5728\u4ee3\u7801\u7ed3\u675f\u5904\u8c03\u7528\u76f4\u63a5\u8bbf\u95ee\u76f8\u5173\u7684\u5c5e\u6027\u3002<\/p>\n\n\n\n<p>\uff081\uff09\u3001\u5355\u72ec\u4ee3\u7801\u63a7\u5236<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>try\n  CalcPerf('Try used time',procedure(APerf: IZPerformance)\n  begin\n  OutputDebugString(PChar('My control code used time:'+APerf.EscapedTime.ToString));\n  end);\n  ...\nfinally\nend;<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8ff0\u4ee3\u7801\u8f93\u51fa My control code used time:100 \u8fd9\u6837\u7684\u5b57\u6837<\/p>\n\n\n\n<p>\uff082\uff09\u3001\u4fdd\u5b58\u53d8\u91cf<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var\n  APerfCounter:IZPerformance;\nbegin\n  APerfCounter:=CalcPerf('');\n  ...\n  OutputDebugString(PChar('Step 1 escaped time '+APerfCounter.EscapedTime.ToString));\n  ...\nend<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6240\u5728\u5355\u5143\uff1azbar.common \u51fd\u6570\u529f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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 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