{"id":111888,"date":"2026-10-02T01:41:32","date_gmt":"2026-10-01T17:41:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/111888.html"},"modified":"2026-10-02T01:41:32","modified_gmt":"2026-10-01T17:41:32","slug":"emscripten-tracing-h-%e8%bf%bd%e8%b8%aa-api-%e6%b7%b1%e5%ba%a6%e6%8c%87%e5%8d%97%ef%bc%9a%e5%86%85%e5%ad%98%e5%88%86%e9%85%8d%e5%8f%af%e8%a7%86%e5%8c%96%e4%b8%8e%e8%87%aa%e5%ae%9a%e4%b9%89%e6%94%b6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/111888.html","title":{"rendered":"Emscripten tracing.h \u8ffd\u8e2a API \u6df1\u5ea6\u6307\u5357\uff1a\u5185\u5b58\u5206\u914d\u53ef\u89c6\u5316\u4e0e\u81ea\u5b9a\u4e49\u6536\u96c6\u670d\u52a1\u5668\u5b9e\u6218"},"content":{"rendered":"<ul class=\"gcb-tag-list\">\n<li><span class=\"gcb-tag\">\u7f16\u8bd1\u5668<\/span><\/li>\n<li><span class=\"gcb-tag\">WebAssembly<\/span><\/li>\n<li><span class=\"gcb-tag\">\u5f00\u53d1\u5de5\u5177<\/span><\/li>\n<li><span class=\"gcb-tag\">\u6784\u5efa\u5de5\u5177<\/span><\/li>\n<\/ul>\n<h3 class=\"gcb-project-title\">\u3010\u514d\u8d39\u4e0b\u8f7d\u94fe\u63a5\u3011emscripten<\/h3>\n<p class=\"gcb-project-desc\">Emscripten: An LLVM-to-WebAssembly Compiler<\/p>\n<p>    <span class=\"gcb-project-addr-label\">\u9879\u76ee\u5730\u5740&#xff1a;<\/span><br \/>\n    <span class=\"gcb-project-addr-link\">https:\/\/gitcode.com\/gh_mirrors\/em\/emscripten<\/span> <\/p>\n<p>  <span class=\"gcb-project-btn\"> <span class=\"gcb-project-btn-main\">\u70b9\u51fb\u67e5\u770b<\/span> <span class=\"gcb-project-btn-sub\">\u514d\u8d39\u4e0b\u8f7d<\/span> <\/span> <\/p>\n<h3>\u5bfc\u8bfb<\/h3>\n<p>Emscripten \u7684 tracing API \u4e3a WebAssembly \u5e94\u7528\u63d0\u4f9b\u4e86\u4e00\u5957\u7aef\u5230\u7aef\u7684\u8fd0\u884c\u65f6\u8ffd\u8e2a\u80fd\u529b&#xff0c;\u91cd\u70b9\u89e3\u51b3\u6d4f\u89c8\u5668\u81ea\u5e26\u6027\u80fd\u5de5\u5177\u96be\u4ee5\u89c2\u6d4b\u7684\u5806\u5185\u5b58\u5206\u914d\u4e0e\u91ca\u653e\u95ee\u9898\u3002\u5b83\u65e2\u53ef\u4ee5\u628a\u8ffd\u8e2a\u6570\u636e\u53d1\u9001\u7ed9\u81ea\u5efa\u7684 collector \u670d\u52a1\u5668&#xff0c;\u4e5f\u53ef\u4ee5\u5bf9\u63a5 Google Web Tracing Framework&#xff08;WTF&#xff09;\u3002\u8bfb\u5b8c\u672c\u6587&#xff0c;\u4f60\u5c06\u638c\u63e1\u5982\u4f55\u901a\u8fc7 emcc &#8211;tracing \u7f16\u8bd1\u5f00\u5173\u3001emscripten\/trace.h \u4e2d\u4e8c\u5341\u4f59\u4e2a C \u51fd\u6570\u5b8c\u6210\u5e94\u7528\u63d2\u6869&#xff0c;\u7406\u89e3\u5176&#034;\u5ba2\u6237\u7aef-\u670d\u52a1\u5668 &#043; Web Worker \u6279\u5904\u7406 &#043; \u4e0d\u6270\u52a8\u5806&#034;\u7684\u8bbe\u8ba1\u539f\u7406&#xff0c;\u5e76\u80fd\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u843d\u5730\u5185\u5b58\u70ed\u70b9\u5b9a\u4f4d\u4e0e\u5e27\u7387\u3001\u4e0a\u4e0b\u6587\u3001\u4efb\u52a1\u7ea7\u5206\u6790\u3002<\/p>\n<h3>\u4e00\u3001\u6982\u8ff0&#xff1a;tracing API \u89e3\u51b3\u4ec0\u4e48\u95ee\u9898<\/h3>\n<p>\u4f20\u7edf\u7684\u6d4f\u89c8\u5668\u6027\u80fd\u5de5\u5177&#xff08;\u5982 Chrome DevTools \u7684 Performance \u9762\u677f&#xff09;\u5bf9 JavaScript \u4e0e WebAssembly \u7684\u8c03\u7528\u3001\u6e32\u67d3\u3001GC \u6709\u8f83\u597d\u7684\u53ef\u89c1\u6027&#xff0c;\u4f46\u5bf9 Wasm \u7ebf\u6027\u5185\u5b58\u5185\u90e8\u7684\u5806\u5206\u914d\u884c\u4e3a\u57fa\u672c\u4e0d\u53ef\u89c1\u2014\u2014\u4f60\u5f88\u96be\u56de\u7b54&#034;\u54ea\u6bb5\u903b\u8f91\u5206\u914d\u4e86\u591a\u5c11\u5b57\u8282\u3001\u4f55\u65f6\u91ca\u653e\u3001\u5806\u662f\u5426\u5728\u788e\u7247\u5316&#034;\u8fd9\u7c7b\u95ee\u9898\u3002Emscripten \u7684 tracing API \u6b63\u662f\u4e3a\u6b64\u800c\u751f&#xff1a;\u5b83\u4ece\u88ab\u63d2\u6869\u7684 C\/C&#043;&#043; \u4ee3\u7801\u4e2d\u91c7\u96c6\u6570\u636e&#xff0c;\u5e76\u4f20\u8f93\u7ed9\u4e24\u7c7b\u540e\u7aef&#xff1a;<\/p>\n<ul>\n<li>\u81ea\u5b9a\u4e49 collector \u670d\u52a1\u5668&#xff08;emscripten-trace-collector&#xff09;&#xff1a;\u5b8c\u6574\u63a5\u6536\u6240\u6709\u6570\u636e\u7c7b\u578b&#xff1b;<\/li>\n<li>Google Web Tracing Framework&#xff08;WTF&#xff09;&#xff1a;\u76ee\u524d\u4ec5\u652f\u6301\u4e0a\u4e0b\u6587&#xff08;contexts&#xff09;\u3001\u65e5\u5fd7\u6d88\u606f&#xff08;log messages&#xff09;\u4e0e\u6807\u8bb0&#xff08;marks&#xff09;\u4e09\u7c7b\u6570\u636e\u7684\u5b50\u96c6\u3002<\/li>\n<\/ul>\n<p>\u5176\u58f0\u660e\u5728 system\/include\/emscripten\/trace.h&#xff0c;\u6838\u5fc3\u5b9e\u73b0\u4e3a src\/lib\/libtrace.js&#xff0c;\u5e76\u6709\u5bf9\u5e94\u6d4b\u8bd5 test\/core\/test_tracing.c\u3002<\/p>\n<h3>\u4e8c\u3001\u7f16\u8bd1\u5668\u4ea4\u4e92&#xff1a;\u5982\u4f55\u5f00\u542f\u8ffd\u8e2a<\/h3>\n<h4>2.1 \u7f16\u8bd1\u4e0e\u94fe\u63a5\u9636\u6bb5<\/h4>\n<p>\u5728\u6bcf\u6b21\u7f16\u8bd1\u548c\u94fe\u63a5\u65f6\u5411 emcc \u4f20\u5165 &#8211;tracing \u6807\u5fd7&#xff1a;<\/p>\n<p>emcc &#8211;tracing -o app.html app.c<\/p>\n<p>\u8fd9\u4e00\u5f00\u5173\u4f1a\u5728\u94fe\u63a5\u9636\u6bb5\u81ea\u52a8\u5b8c\u6210\u4e24\u4ef6\u4e8b&#xff08;\u89c1 tools\/link.py&#xff09;&#xff1a;<\/p>\n<li>\u6ce8\u5165 libtrace.js&#xff1a;add_system_js_lib(&#039;libtrace.js&#039;) \u628a tracing \u7684 JS \u8fd0\u884c\u65f6\u52a0\u5165\u6784\u5efa&#xff1b;<\/li>\n<li>\u5b9a\u4e49\u9884\u5904\u7406\u5b8f __EMSCRIPTEN_TRACING__&#xff1a;C\/C&#043;&#043; \u4fa7\u636e\u6b64\u542f\u7528\u771f\u5b9e\u5b9e\u73b0\u3002<\/li>\n<p>\u5bf9\u5e94\u5730&#xff0c;src\/settings.js \u4e2d\u7684 EMSCRIPTEN_TRACING \u8bbe\u7f6e\u9879\u7531\u547d\u4ee4\u884c\u5f00\u5173\u9a71\u52a8\u3002<\/p>\n<p>\u5982\u679c\u8df3\u8fc7 emcc \u800c\u76f4\u63a5\u7528 clang \u7f16\u8bd1 C\/C&#043;&#043; \u4ee3\u7801&#xff0c;\u5219\u9700\u8981\u624b\u52a8\u4f20\u5165 -D__EMSCRIPTEN_TRACING__\u3002<\/p>\n<h4>2.2 \u65e0\u8ffd\u8e2a\u65f6\u7684\u7a7a\u6869<\/h4>\n<p>\u5f53 __EMSCRIPTEN_TRACING__ \u672a\u5b9a\u4e49\u65f6&#xff0c;system\/include\/emscripten\/trace.h \u4f1a\u7ed9\u51fa\u5168\u90e8 API \u7684\u5185\u8054\u7a7a\u6869\u5b8f&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>#define emscripten_trace_configure(collector_url, application) ((void)0)<br \/>\n#define emscripten_trace_log_message(channel, message) ((void)0)<\/p>\n<p>\u8fd9\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u5728\u6e90\u7801\u4e2d\u65e0\u6761\u4ef6\u5730\u57cb\u5165\u8ffd\u8e2a\u8c03\u7528&#xff0c;\u65e5\u5e38\u6784\u5efa\u96f6\u5f00\u9500&#xff1b;\u53ea\u6709\u5f00\u542f &#8211;tracing \u65f6\u624d\u771f\u6b63\u751f\u6548\u3002\u8fd9\u4e3a\u5728\u5927\u578b\u4ee3\u7801\u5e93\u4e2d\u957f\u671f\u4fdd\u7559\u63d2\u6869\u63d0\u4f9b\u4e86\u4fbf\u5229\u3002<\/p>\n<h4>2.3 \u52a1\u5fc5\u5148\u6e05\u7406\u7f13\u5b58<\/h4>\n<p>&#8211;tracing \u4f1a\u4fee\u6539 libc \u5185 dlmalloc.c \u7684\u5b9e\u73b0&#xff08;\u5728 malloc\/realloc\/free \u5185\u63d2\u5165\u8ffd\u8e2a\u8bb0\u5f55&#xff0c;\u89c1\u4e0b\u6587&#034;\u5206\u914d\u8bb0\u5f55&#034;\u4e00\u8282&#xff09;\u3002\u7531\u4e8e Emscripten \u4f1a\u7f13\u5b58\u6784\u5efa\u597d\u7684 libc&#xff0c;\u82e5\u6b64\u524d\u5df2\u7ecf\u6784\u5efa\u8fc7\u666e\u901a\u7248\u672c&#xff0c;\u9700\u8981\u5148\u6e05\u7406\u7f13\u5b58&#xff0c;\u5426\u5219\u62ff\u4e0d\u5230\u5b8c\u6574\u7684\u5206\u914d\u7ec6\u8282&#xff1a;<\/p>\n<p>emcc &#8211;clear-cache<\/p>\n<p>\u4ece\u6e90\u7801\u770b&#xff0c;libc \u4f1a\u6309 is_tracing \u751f\u6210\u72ec\u7acb\u7684 -tracing \u53d8\u4f53&#xff08;tools\/system_libs.py&#xff09;&#xff0c;\u56e0\u6b64\u5efa\u8bae\u5728\u5f00\u542f\/\u5173\u95ed tracing \u4e4b\u95f4\u5207\u6362\u65f6\u90fd\u6267\u884c\u6e05\u7f13\u5b58\u64cd\u4f5c&#xff0c;\u786e\u4fdd\u62ff\u5230\u5bf9\u5e94\u53d8\u4f53\u3002<\/p>\n<h3>\u4e09\u3001\u521d\u59cb\u5316\u548c\u5173\u95ed<\/h3>\n<h4>3.1 \u8fde\u63a5 collector \u670d\u52a1\u5668<\/h4>\n<p>\u5728\u5e94\u7528\u542f\u52a8\u540e\u5c3d\u65e9\u8c03\u7528 emscripten_trace_configure&#xff1a;<\/p>\n<p>emscripten_trace_configure(&#034;http:\/\/127.0.0.1:5000\/&#034;, &#034;MyApplication&#034;);<\/p>\n<ul>\n<li>collector_url&#xff1a;collector \u670d\u52a1\u5668\u7684\u57fa\u7840 URL&#xff0c;\u9ed8\u8ba4\u672c\u5730\u5f00\u53d1\u901a\u5e38\u4e3a http:\/\/127.0.0.1:5000\/&#xff1b;<\/li>\n<li>application&#xff1a;\u88ab\u8ffd\u8e2a\u5e94\u7528\u7684\u540d\u5b57&#xff0c;\u670d\u52a1\u5668\u7528\u5b83\u533a\u5206\u6765\u81ea\u4e0d\u540c\u5e94\u7528\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n<h4>3.2 \u5bf9\u63a5 Google WTF<\/h4>\n<p>\u5982\u679c\u53ea\u60f3\u4f7f\u7528 Google Web Tracing Framework&#xff0c;\u6539\u4e3a\u8c03\u7528&#xff1a;<\/p>\n<p>emscripten_trace_configure_for_google_wtf();<\/p>\n<p>\u6ce8\u610f&#xff1a;WTF \u6a21\u5f0f\u4e0b\u5e76\u975e\u6240\u6709\u8ffd\u8e2a\u7279\u6027\u90fd\u53ef\u7528&#xff0c;\u5f53\u524d\u4ec5\u652f\u6301\u4e0a\u4e0b\u6587\u3001\u65e5\u5fd7\u6d88\u606f\u4e0e\u6807\u8bb0&#xff08;marks&#xff09;\u3002<\/p>\n<h4>3.3 \u4f1a\u8bdd\u8eab\u4efd<\/h4>\n<p>\u82e5\u5e94\u7528\u6709\u7528\u6237\u540d\u6216\u67d0\u79cd\u7528\u6237\u6807\u8bc6\u6982\u5ff5&#xff0c;\u53ef\u5c06\u5176\u4f20\u7ed9 API&#xff0c;\u4fbf\u4e8e\u5728 collector \u670d\u52a1\u5668\u4e2d\u533a\u5206\u4e0d\u540c\u4f1a\u8bdd&#xff08;\u800c\u4e0d\u662f\u53ea\u9760\u65f6\u95f4\u6233\u4f1a\u8bdd ID&#xff09;&#xff1a;<\/p>\n<p>emscripten_trace_set_session_username(username);<\/p>\n<p>\u8be5\u8c03\u7528\u53ef\u4ee5\u5728\u8ffd\u8e2a\u5f00\u59cb\u4e4b\u540e\u518d\u8bbe\u7f6e&#xff0c;\u56e0\u6b64\u653e\u5728\u767b\u5f55\/\u9274\u6743\u6d41\u7a0b\u4e4b\u540e\u4e5f\u5b8c\u5168\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n<h4>3.4 \u5173\u95ed<\/h4>\n<p>\u5e94\u7528\u9000\u51fa\u65f6\u8c03\u7528 emscripten_trace_close()&#xff0c;\u786e\u4fdd\u6240\u6709\u6570\u636e\u88ab flush \u5230\u670d\u52a1\u5668\u5e76\u7ec8\u6b62\u8ffd\u8e2a\u4ee3\u7801\u3002<\/p>\n<h4>3.5 \u8fd0\u884c\u65f6\u5f00\u5173<\/h4>\n<p>emscripten_trace_set_enabled(bool enabled) \u53ef\u52a8\u6001\u542f\u7528\/\u7981\u7528\u8ffd\u8e2a\u3002\u9700\u6ce8\u610f&#xff1a;\u7981\u7528\u8ffd\u8e2a\u4f1a\u5bfc\u81f4\u5185\u5b58\u4f7f\u7528\u6570\u636e\u4e0d\u51c6\u786e&#xff08;\u5206\u914d\/\u91ca\u653e\u8bb0\u5f55\u4f1a\u4e22\u5931&#xff09;&#xff0c;\u4e00\u822c\u4ec5\u7528\u4e8e\u8c03\u8bd5\u573a\u666f\u3002<\/p>\n<h4>3.6 \u5b9e\u73b0\u7ec6\u8282&#xff1a;Worker \u4e0e session<\/h4>\n<p>\u5728 src\/lib\/libtrace.js \u4e2d&#xff0c;configure \u7684\u5b9e\u73b0\u503c\u5f97\u6ce8\u610f&#xff1a;<\/p>\n<ul>\n<li>\u751f\u6210 session_id&#xff08;\u65f6\u95f4\u6233 &#043; \u968f\u673a\u6570&#xff09;&#xff1b;<\/li>\n<li>\u901a\u8fc7 fetch \u4ece collector \u670d\u52a1\u5668\u62c9\u53d6 worker.js&#xff0c;\u7528 URL.createObjectURL \u521b\u5efa Web Worker&#xff0c;\u6b64\u540e\u6240\u6709\u8ffd\u8e2a\u6570\u636e\u90fd\u7531\u8be5 Worker \u8f6c\u53d1\u7ed9\u670d\u52a1\u5668&#xff08;\u501f\u6b64\u89c4\u907f CORS \u9650\u5236&#xff09;&#xff1b;<\/li>\n<li>\u5411 Worker \u53d1\u9001 configure \u6307\u4ee4\u5e76\u7acb\u5373\u4e0a\u62a5 application-name \u4e0e session-name \u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e5f\u89e3\u91ca\u4e86\u4e3a\u4f55 collector_url \u5fc5\u987b\u6307\u5411\u4e00\u4e2a\u80fd\u63d0\u4f9b worker.js \u7684\u670d\u52a1\u5668\u3002<\/p>\n<h3>\u56db\u3001\u4e0a\u4e0b\u6587&#xff08;Contexts&#xff09;&#xff1a;\u5ec9\u4ef7\u7684&#034;\u6808\u8f68\u8ff9&#034;\u66ff\u4ee3<\/h3>\n<h4>4.1 \u6982\u5ff5<\/h4>\n<p>\u4e0a\u4e0b\u6587\u7528\u4e8e\u544a\u8bc9\u8ffd\u8e2a API \u5f53\u524d\u6b63\u5728\u8fd0\u884c\u5e94\u7528\u7684\u54ea\u4e00\u90e8\u5206&#xff0c;\u5185\u90e8\u4ee5&#034;\u5f53\u524d\u4e0a\u4e0b\u6587\u6808&#034;\u7684\u5f62\u5f0f\u7ef4\u62a4\u3002\u4e00\u4e2a\u4e0a\u4e0b\u6587\u53ef\u4ee5\u5927\u5230&#034;\u7269\u7406\u5f15\u64ce\u8fd0\u884c\u4e2d&#034;&#xff0c;\u4e5f\u53ef\u4ee5\u5c0f\u5230&#034;\u66f4\u65b0\u5b9e\u4f53 X \u7684\u52a8\u753b&#034;\u3002\u7c92\u5ea6\u5b8c\u5168\u7531\u63d2\u6869\u56e2\u961f\u81ea\u884c\u51b3\u5b9a\u2014\u2014\u7ec6\u7c92\u5ea6\u4e0a\u4e0b\u6587\u66f4\u5229\u4e8e\u5b9a\u4f4d\u95ee\u9898&#xff0c;\u7c97\u7c92\u5ea6\u5219\u5f00\u9500\u66f4\u4f4e\u3001\u66f4\u6613\u7ef4\u62a4\u3002<\/p>\n<p>\u5f15\u5165\u4e0a\u4e0b\u6587\u6808\u7684\u5173\u952e\u52a8\u673a\u662f&#xff1a;\u4e0e\u5176\u5728\u6bcf\u6b21\u8ffd\u8e2a\u8c03\u7528\u65f6\u6293\u53d6\u5b8c\u6574\u8c03\u7528\u6808&#xff0c;\u4e0d\u5982\u8bb0\u5f55\u5f53\u524d\u4e0a\u4e0b\u6587\u6808\u2014\u2014\u540e\u8005\u7684\u6210\u672c\u8fdc\u4f4e\u4e8e\u524d\u8005\u3002\u5f53\u670d\u52a1\u5668\u5b8c\u6574\u5b9e\u73b0\u540e&#xff0c;\u4e0a\u4e0b\u6587\u8fd8\u5c06\u7528\u4e8e\u7edf\u8ba1&#xff1a;<\/p>\n<ul>\n<li>\u6bcf\u4e2a\u4e0a\u4e0b\u6587\u5185\u6d88\u8017\u7684\u65f6\u95f4&#xff08;\u4e00\u79cd\u57fa\u7840\u6027\u80fd\u5256\u6790\u673a\u5236&#xff09;&#xff1b;<\/li>\n<li>\u4e0a\u4e0b\u6587\u6fc0\u6d3b\u671f\u95f4\u5206\u914d\u4e0e\u91ca\u653e\u7684\u5185\u5b58\u91cf\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u6709\u52a9\u4e8e\u56de\u7b54&#034;\u5e94\u7528\u7684\u54ea\u4e9b\u90e8\u5206\u5360\u7528\u66f4\u591a\u5185\u5b58\u3001\u4ea7\u751f\u5927\u91cf\u5185\u5b58 churn&#xff08;\u8fdb\u800c\u53ef\u80fd\u9020\u6210\u5806\u788e\u7247&#xff09;&#034;\u3002<\/p>\n<h4>4.2 \u4f7f\u7528\u65b9\u5f0f<\/h4>\n<p>emscripten_trace_enter_context(&#034;Physics Update&#034;);<br \/>\n\/* &#8230; \u7269\u7406\u66f4\u65b0\u903b\u8f91 &#8230; *\/<br \/>\nemscripten_trace_exit_context();<\/p>\n<p>\u5728 JS \u5b9e\u73b0\u4e2d&#xff08;src\/lib\/libtrace.js&#xff09;&#xff0c;\u8fdb\u5165\/\u9000\u51fa\u4e0a\u4e0b\u6587\u4f1a\u5411\u670d\u52a1\u5668\u53d1\u9001 enter-context \/ exit-context \u4e8b\u4ef6&#xff1b;\u82e5\u540c\u65f6\u542f\u7528\u4e86 Google WTF&#xff0c;\u8fd8\u4f1a\u8c03\u7528 wtf.trace.events.createScope \u5e76\u628a scope \u538b\u5165\u81ea\u5df1\u7684 scopeStack&#xff0c;\u9000\u51fa\u65f6\u5f39\u51fa\u5e76 leaveScope&#xff0c;\u4ece\u800c\u5728 WTF \u65f6\u95f4\u7ebf\u4e0a\u5448\u73b0\u5d4c\u5957\u4f5c\u7528\u57df\u3002<\/p>\n<h3>\u4e94\u3001\u5e27&#xff08;Frames&#xff09;&#xff1a;\u6807\u8bb0\u4e8b\u4ef6\u5faa\u73af\u8fb9\u754c<\/h3>\n<p>\u8bb0\u5f55\u5e27\/\u4e8b\u4ef6\u5faa\u73af\u7684\u8d77\u6b62\u975e\u5e38\u91cd\u8981&#xff0c;\u5b83\u8ba9\u670d\u52a1\u5668\u53ef\u4ee5\u8fdb\u884c\u989d\u5916\u7684\u6709\u7528\u5206\u6790&#xff08;\u5982\u5e27\u8017\u65f6\u3001\u6bcf\u79d2\u5e27\u6570\u3001\u5e27\u5185\u7684\u5185\u5b58\u64cd\u4f5c\u5f52\u5c5e&#xff09;&#xff1a;<\/p>\n<p>emscripten_trace_record_frame_start();<br \/>\n\/* &#8230; \u6e32\u67d3\u4e00\u5e27 &#8230; *\/<br \/>\nemscripten_trace_record_frame_end();<\/p>\n<p>\u670d\u52a1\u5668\u5229\u7528\u8fd9\u4e24\u4e2a\u5e26\u65f6\u95f4\u6233\u7684\u4e8b\u4ef6\u6765&#xff1a;<\/p>\n<ul>\n<li>\u8ba1\u7b97\u5e27\u65f6\u95f4&#xff08;\u8fdb\u800c\u5f97\u5230 FPS&#xff09;&#xff1b;<\/li>\n<li>\u628a\u53d1\u751f\u5728\u5e27\u5904\u7406\u671f\u95f4\u7684\u5185\u5b58\u64cd\u4f5c\u8ba1\u5165\u8be5\u5e27\u7684\u8d26\u76ee\u3002<\/li>\n<\/ul>\n<h3>\u516d\u3001\u8bb0\u5f55\u5206\u914d&#xff1a;malloc \/ realloc \/ free \u7684\u5168\u81ea\u52a8\u63d2\u6869<\/h3>\n<h4>6.1 \u81ea\u52a8\u8bb0\u5f55<\/h4>\n<p>\u5728\u6bcf\u6b21\u5206\u914d\u4e0e\u91ca\u653e\u64cd\u4f5c\u4e0a&#xff0c;\u7406\u60f3\u60c5\u51b5\u4e0b\u90fd\u5e94\u8bb0\u5f55&#xff08;\u5305\u62ec\u6570\u636e\u7c7b\u578b\u540d&#xff09;\u3002\u5f53\u4f7f\u7528 &#8211;tracing \u6784\u5efa\u4e14\u6e05\u9664\u4e86\u7f13\u5b58\u540e&#xff0c;Emscripten \u6784\u5efa\u7684 libc \u4f1a\u81ea\u52a8\u8bb0\u5f55\u6240\u6709\u5bf9 malloc\u3001realloc\u3001free \u7684\u8c03\u7528\u3002<\/p>\n<p>\u4ece\u6e90\u7801\u770b&#xff0c;\u8fd9\u4e9b\u94a9\u5b50\u4f4d\u4e8e system\/lib\/dlmalloc.c&#xff1a;<\/p>\n<ul>\n<li>malloc \u6210\u529f\u8def\u5f84\u8c03\u7528 emscripten_trace_record_allocation(mem, bytes)&#xff08;\u7ea6 L4762&#xff09;&#xff1b;<\/li>\n<li>free \u8c03\u7528 emscripten_trace_record_free(mem)&#xff08;\u7ea6 L4782&#xff09;&#xff1b;<\/li>\n<li>realloc \u5728\u6269\u5c55\/\u6536\u7f29\u8def\u5f84\u5206\u522b\u8c03\u7528 emscripten_trace_record_reallocation(oldmem, mem, bytes)&#xff08;\u7ea6 L5312 \u4e0e L5358&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u4e09\u4e2a JS \u94a9\u5b50\u8fd8\u4f1a\u89e6\u53d1 Module[&#039;onMalloc&#039;]\u3001Module[&#039;onRealloc&#039;]\u3001Module[&#039;onFree&#039;] \u56de\u8c03&#xff08;\u89c1 src\/lib\/libtrace.js&#xff09;&#xff0c;\u5e76\u5728 postEnabled \u65f6\u5411\u670d\u52a1\u5668\u53d1\u9001 allocate \/ reallocate \/ free \u4e8b\u4ef6\u3002<\/p>\n<h4>6.2 \u624b\u52a8\u6ce8\u91ca\u6570\u636e\u7c7b\u578b<\/h4>\n<p>\u6570\u636e\u7c7b\u578b\u540d\u76ee\u524d\u9700\u8981\u624b\u52a8\u8bb0\u5f55\u3002\u5206\u914d\u5185\u5b58\u540e&#xff0c;\u7528\u5730\u5740\u6ce8\u91ca\u7c7b\u578b\u540d&#xff1a;<\/p>\n<p>emscripten_trace_annotate_address_type(model, &#034;UI::Model&#034;);<\/p>\n<p>\u670d\u52a1\u5668\u636e\u6b64\u5bf9\u5185\u5b58\u4e2d\u7684\u5185\u5bb9\u8fdb\u884c\u7c7b\u578b\u5206\u89e3&#xff08;annotate-type \u4e8b\u4ef6&#xff09;\u3002<\/p>\n<h4>6.3 \u5173\u8054\u9644\u5c5e\u5b58\u50a8<\/h4>\n<p>\u6709\u4e9b\u5e94\u7528\u8fd8\u60f3\u628a&#034;\u989d\u5916\u5b58\u50a8&#034;\u4e0e\u67d0\u6b21\u5206\u914d\u5173\u8054\u8d77\u6765\u3002\u4f8b\u5982\u4e00\u4e2a\u5bf9\u8c61\u5185\u90e8\u6301\u6709 vector \u6216 string&#xff0c;\u5206\u6790\u5185\u5b58\u65f6\u5e94\u628a\u8fd9\u4e9b\u9644\u5c5e\u5185\u5b58\u4e00\u5e76\u8ba1\u5165\u5bf9\u8c61\u5927\u5c0f&#xff1a;<\/p>\n<p>emscripten_trace_associate_storage_size(mesh, mesh-&gt;GetTotalMemoryUsage());<\/p>\n<p>associate_storage_size \u8bb0\u5f55\u7684\u4e0d\u662f\u5206\u914d\u672c\u8eab\u7684 size&#xff0c;\u800c\u662f\u4e0e\u8be5\u5730\u5740\u5173\u8054\u7684\u3001\u5e94\u7528\u81ea\u5b9a\u4e49\u7684\u9644\u52a0\u5b58\u50a8\u91cf&#xff08;associate-storage-size \u4e8b\u4ef6&#xff09;\u3002<\/p>\n<h4>6.4 \u5176\u4ed6\u5e95\u5c42\u4e8b\u4ef6<\/h4>\n<p>\u9664\u4e0a\u8ff0\u5916&#xff0c;libtrace.js \u8fd8\u5b9a\u4e49\u4e86 sbrk-grow \u4e8b\u4ef6&#xff08;emscripten_trace_sbrk_grow&#xff0c;\u540c\u65f6\u89e6\u53d1 Module[&#039;onSbrkGrow&#039;]&#xff09;&#xff0c;\u7528\u4e8e\u8bb0\u5f55\u7a0b\u5e8f\u65ad\u70b9\u4e0a\u79fb\u3002\u542f\u7528 tracing \u65f6\u94fe\u63a5\u5668\u8fd8\u4f1a\u81ea\u52a8\u628a sbrk \u52a0\u5165\u5fc5\u9700\u5bfc\u51fa&#xff08;tools\/link.py&#xff09;&#xff0c;\u5e76\u5728\u5f00\u542f\u5185\u5b58\u589e\u957f\u65f6\u8865\u5145\u5bfc\u51fa emscripten_stack_get_current\/base\/end \u4e14\u9ed8\u8ba4\u5305\u542b emscripten_trace_report_memory_layout&#xff08;tools\/link.py&#xff09;\u3002<\/p>\n<h3>\u4e03\u3001\u6574\u4f53\u5185\u5b58\u4f7f\u7528\u62a5\u544a<\/h3>\n<p>\u5468\u671f\u6027\u5730\u5411\u8ffd\u8e2a API \u6c47\u62a5\u6574\u4f53\u5806\u5e03\u5c40\u4e0e\u5185\u5b58\u4f7f\u7528&#xff0c;\u7531\u4e24\u4e2a\u8c03\u7528\u5b8c\u6210&#xff1a;<\/p>\n<p>emscripten_trace_report_memory_layout();<br \/>\nemscripten_trace_report_off_heap_data();<\/p>\n<ul>\n<li>emscripten_trace_report_memory_layout&#xff1a;\u62a5\u544a\u666e\u901a Emscripten \u5806\u7684\u4f7f\u7528\u60c5\u51b5\u3002\u5b9e\u73b0\u4e2d&#xff08;src\/lib\/libtrace.js&#xff09;\u4f1a\u91c7\u96c6 static_base&#xff08;GLOBAL_BASE&#xff09;\u3001stack_base\u3001stack_current\u3001stack_max\u3001dynamic_top&#xff08;sbrk(0)&#xff09;\u4ee5\u53ca total_memory&#xff08;HEAP8.length&#xff09;&#xff0c;\u4f5c\u4e3a memory-layout \u4e8b\u4ef6\u4e0a\u62a5&#xff0c;\u540c\u65f6\u8986\u76d6\u6808\u4e0e\u52a8\u6001\u5185\u5b58\u7684\u4f7f\u7528\u91cf\u53ca\u603b\u5185\u5b58\u5927\u5c0f\u3002<\/li>\n<li>emscripten_trace_report_off_heap_data&#xff1a;\u62a5\u544a\u4e0d\u5728\u666e\u901a Emscripten \u5806\u4e0a\u7684\u5185\u5b58\u3002\u5f53\u524d\u5b9e\u73b0\u53ea\u7edf\u8ba1 OpenAL \u97f3\u9891\u6570\u636e&#xff08;\u904d\u5386 AL.currentContext.buf \u4e2d\u6bcf\u4e2a buffer \u7684\u6240\u6709 channel&#xff0c;\u6309 length * 4 \u5b57\u8282\u7d2f\u52a0&#xff09;&#xff0c;\u4f5c\u4e3a off-heap \u4e8b\u4ef6\u4e0a\u62a5\u3002\u6ce8\u610f&#xff1a;\u670d\u52a1\u5668\u76ee\u524d\u8fd8\u4e0d\u5c55\u793a\u8fd9\u4e9b\u6570\u636e\u3002<\/li>\n<\/ul>\n<h3>\u516b\u3001\u65e5\u5fd7\u6d88\u606f<\/h3>\n<p>\u53ef\u901a\u8fc7\u8ffd\u8e2a API \u8bb0\u5f55\u65e5\u5fd7\u6d88\u606f&#xff0c;\u6d88\u606f\u5305\u542b\u901a\u9053&#xff08;channel&#xff09;\u4e0e\u5185\u5bb9\u4e24\u90e8\u5206&#xff1a;<\/p>\n<p>emscripten_trace_log_message(&#034;Application&#034;, &#034;Started&#034;);<\/p>\n<p>\u901a\u9053\u540d\u7528\u4e8e\u5728\u53ef\u89c6\u5316\u754c\u9762\u4e2d\u5206\u7c7b\u4e0e\u8fc7\u6ee4\u6d88\u606f\u3002\u5173\u952e\u7ea6\u675f&#xff1a;\u8bb0\u5f55\u65e5\u5fd7\u6d88\u606f\u65f6\u4e0d\u8981\u5728\u8be5\u8def\u5f84\u4e0a\u5206\u914d\u5806\u5185\u5b58&#xff08;\u539f\u56e0\u89c1&#034;\u4e0d\u6270\u52a8\u5806&#034;\u4e00\u8282&#xff09;\u3002\u4e3a\u52a0\u8f7d\u65b0\u6a21\u578b\u3001\u6e38\u620f\u8d44\u6e90\u7b49\u53ef\u80fd\u5f15\u53d1\u5927\u91cf\u5185\u5b58\u6d3b\u52a8\u7684\u884c\u4e3a\u8bb0\u5f55\u65e5\u5fd7&#xff0c;\u5bf9\u5206\u6790\u5185\u5b58\u4f7f\u7528\u6a21\u5f0f\u975e\u5e38\u6709\u7528&#xff1a;<\/p>\n<p>emscripten_trace_log_message(&#034;Asset&#034;, &#034;Loading level1.model&#034;);<\/p>\n<p>\u6b64\u5916&#xff0c;emscripten_trace_mark(message) \u4f1a\u5728\u65f6\u95f4\u7ebf\u4e0a\u8bb0\u5f55\u4e00\u4e2a\u6807\u8bb0\u70b9&#xff0c;\u4e3b\u8981\u7528\u4e8e Google WTF&#xff08;\u5185\u90e8\u4ee5 MARK \u901a\u9053\u53d1\u9001 log-message \u4e8b\u4ef6&#xff0c;\u5e76\u5728 WTF \u53ef\u7528\u65f6\u8c03\u7528 wtf.trace.mark&#xff09;\u3002<\/p>\n<h3>\u4e5d\u3001\u4efb\u52a1&#xff08;Tasks&#xff09;&#xff1a;\u5f02\u6b65\u5de5\u4f5c\u5355\u5143\u7684\u5b8c\u6574\u751f\u547d\u5468\u671f<\/h3>\n<p>\u4efb\u52a1\u662f\u975e\u91cd\u590d\u7684\u5de5\u4f5c\u5355\u5143&#xff0c;\u5178\u578b\u4f8b\u5b50\u662f\u52a0\u8f7d\u8d44\u6e90\u2014\u2014\u5b83\u901a\u5e38\u5305\u542b\u4e00\u8fde\u4e32\u56de\u8c03&#xff0c;\u53ef\u80fd\u56e0\u5f02\u6b65\u90e8\u5206\u800c\u6302\u8d77\u6216\u963b\u585e\u3002\u4efb\u52a1 ID \u4e3a\u6574\u6570&#xff0c;\u7531\u5e94\u7528\u81ea\u884c\u7ef4\u62a4&#xff0c;\u5e76\u987b\u4fdd\u8bc1\u5728\u5e94\u7528\u751f\u547d\u5468\u671f\u5185\u552f\u4e00&#xff1b;\u5927\u591a\u6570\u4efb\u52a1\u76f8\u5173\u8c03\u7528\u4f5c\u7528\u4e8e&#034;\u5f53\u524d\u4efb\u52a1&#034;&#xff0c;\u56e0\u6b64\u65e0\u9700\u6bcf\u6b21\u90fd\u4f20\u4efb\u52a1 ID\u3002<\/p>\n<h4>9.1 \u5f00\u59cb\u4e0e\u7ed3\u675f<\/h4>\n<p>emscripten_trace_task_start(taskID, name);<br \/>\n\/* &#8230; *\/<br \/>\nemscripten_trace_task_end();<\/p>\n<h4>9.2 \u6302\u8d77\u4e0e\u6062\u590d<\/h4>\n<p>\u5f53\u4efb\u52a1\u56e0\u5f02\u6b65\u64cd\u4f5c\u6302\u8d77\/\u963b\u585e\u65f6&#xff1a;<\/p>\n<p>emscripten_trace_task_suspend(&#034;loading via HTTP&#034;);<\/p>\n<p>\u6062\u590d\u65f6&#xff1a;<\/p>\n<p>emscripten_trace_task_resume(taskID, &#034;parsing&#034;);<\/p>\n<p>explanation \u53c2\u6570\u5e94\u8bf4\u660e\u6302\u8d77\u539f\u56e0\/\u6062\u590d\u540e\u8981\u505a\u4ec0\u4e48&#xff0c;\u8fd9\u4e9b\u4fe1\u606f\u4f1a\u5728\u67e5\u770b\u4efb\u52a1\u5386\u53f2\u65f6\u5c55\u793a\u3002<\/p>\n<h4>9.3 \u5173\u8054\u9644\u52a0\u6570\u636e<\/h4>\n<p>\u5e38\u9700\u8981\u628a\u989d\u5916\u6570\u636e\u5173\u8054\u5230\u5f53\u524d\u4efb\u52a1&#xff0c;\u4f9b\u540e\u7eed\u5206\u6790\u4f7f\u7528&#xff0c;\u4f8b\u5982\u8d44\u6e90 URL&#xff1a;<\/p>\n<p>emscripten_trace_task_associate_data(&#034;url&#034;, url);<\/p>\n<p>\u5bf9\u5e94\u7684\u4e8b\u4ef6\u4e3a task-start\u3001task-suspend\u3001task-resume\u3001task-end\u3001task-associate-data&#xff08;\u89c1 src\/lib\/libtrace.js&#xff09;\u3002<\/p>\n<h3>\u5341\u3001\u9519\u8bef\u62a5\u544a<\/h3>\n<p>\u5e94\u7528\u9047\u5230\u7684\u9519\u8bef\u53ef\u4f5c\u4e3a\u8f85\u52a9\u670d\u52a1\u4e0a\u62a5\u7ed9\u8ffd\u8e2a API&#xff1a;<\/p>\n<p>emscripten_trace_report_error(&#034;Assertion failed: &#8230;&#034;);<\/p>\n<p>\u5b9e\u73b0\u4e2d&#xff08;src\/lib\/libtrace.js&#xff09;\u4f1a\u81ea\u52a8\u83b7\u53d6\u5f53\u524d\u8c03\u7528\u6808&#xff08;(new Error).stack&#xff09;\u4e00\u5e76\u53d1\u9001 report-error \u4e8b\u4ef6&#xff0c;\u53ef\u7528\u4e8e\u6355\u83b7 JavaScript \/ Web Worker \u9519\u8bef&#xff0c;\u4ee5\u53ca C\/C&#043;&#043; \u4fa7\u7684\u65ad\u8a00\u5931\u8d25\u6216\u8fd0\u884c\u65f6\u9519\u8bef\u3002\u6587\u6863\u660e\u786e\u6307\u51fa&#xff1a;\u8be5\u7279\u6027\u7528\u4e8e\u9884\u793a Emscripten tracing API \u7684\u672a\u6765\u53d1\u5c55\u65b9\u5411\u3002<\/p>\n<h3>\u5341\u4e00\u3001\u8fd0\u884c collector \u670d\u52a1\u5668<\/h3>\n<li>\u83b7\u53d6 emscripten-trace-collector \u670d\u52a1\u5668\u7684\u526f\u672c&#xff1b;<\/li>\n<li>\u6309\u7167\u5176 README.rst \u4e2d\u7684\u8bf4\u660e\u542f\u52a8\u4e0e\u914d\u7f6e\u3002<\/li>\n<p>&#xff08;\u8be5\u670d\u52a1\u5668\u72ec\u7acb\u4e8e\u672c\u4ed3\u5e93\u7ef4\u62a4&#xff0c;\u8d1f\u8d23\u63a5\u6536\u3001\u5206\u6790\u8ffd\u8e2a\u6570\u636e\u5e76\u63d0\u4f9b Web \u53ef\u89c6\u5316\u754c\u9762\u3002&#xff09;<\/p>\n<h3>\u5341\u4e8c\u3001\u8bbe\u8ba1\u539f\u7406<\/h3>\n<h4>12.1 \u5ba2\u6237\u7aef \/ \u670d\u52a1\u5668\u67b6\u6784<\/h4>\n<p>Emscripten tracing API \u4ece\u88ab\u63d2\u6869\u7684\u4ee3\u7801\u4e2d\u91c7\u96c6\u6570\u636e&#xff0c;\u4f20\u8f93\u7ed9 collector \u670d\u52a1\u5668&#xff1b;\u670d\u52a1\u5668\u8d1f\u8d23\u6570\u636e\u5206\u6790\u5e76\u63d0\u4f9b\u67e5\u770b\u6570\u636e\u7684 Web \u754c\u9762\u3002\u8fd9\u79cd\u8bbe\u8ba1\u6709\u4e24\u4e2a\u76ee\u7684&#xff1a;<\/p>\n<ul>\n<li>\u5728\u5185\u5b58\u7d27\u5f20\u7684\u4f4e\u7aef\u786c\u4ef6\u4e0a&#xff08;\u5982 32 \u4f4d Windows \u673a\u5668&#xff09;\u8fd0\u884c\u65f6\u4e0d\u5e72\u6270\u6d4f\u89c8\u5668\u2014\u2014\u5206\u6790\u8d1f\u62c5\u88ab\u8f6c\u79fb\u5230\u670d\u52a1\u5668\u4fa7&#xff1b;<\/li>\n<li>\u4e00\u4e2a\u670d\u52a1\u5668\u53ef\u4ee5\u540c\u65f6\u6536\u96c6\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8ffd\u8e2a\u6570\u636e&#xff0c;\u4fbf\u4e8e\u96c6\u4e2d\u5206\u6790\u3002<\/li>\n<\/ul>\n<h4>12.2 \u6570\u636e\u6279\u5904\u7406<\/h4>\n<p>\u6570\u636e\u4ee5\u5757&#xff08;chunk&#xff09;\u4e3a\u5355\u4f4d\u6279\u91cf\u53d1\u9001&#xff0c;\u5927\u7ea6\u6bcf\u79d2 1&#xff5e;2 \u6b21\u3002\u8fd9\u907f\u514d\u4e86\u4e3a\u6bcf\u4e00\u6761\u8bb0\u5f55\u4e8b\u4ef6\u90fd\u65b0\u5efa\u5230\u670d\u52a1\u5668\u7684\u8fde\u63a5&#xff08;\u8fde\u63a5\u5efa\u7acb\u5f00\u9500\u8fdc\u5927\u4e8e\u6570\u636e\u672c\u8eab&#xff09;\u3002<\/p>\n<h4>12.3 \u4e0d\u6270\u52a8\u5806&#xff08;Do Not Perturb The Heap&#xff09;<\/h4>\n<p>\u4f7f\u7528 tracing API \u65f6\u987b\u683c\u5916\u5c0f\u5fc3&#xff0c;\u4e0d\u8981\u6267\u884c\u4f1a\u6270\u52a8\u5806\u7684\u64cd\u4f5c\u3002\u4f8b\u5982&#xff1a;\u4e0d\u8981\u628a\u52a8\u6001\u5206\u914d\u7684\u5b57\u7b26\u4e32\u4f20\u7ed9 emscripten_trace_log_message\u2014\u2014\u90a3\u4f1a\u5bfc\u81f4\u8be5\u5206\u914d\u672c\u8eab\u88ab\u8ffd\u8e2a\u8bb0\u5f55&#xff0c;\u4ece\u800c\u5e72\u6270\u4f60\u6b63\u5728\u5206\u6790\u7684\u884c\u4e3a\u4e0e\u7ed3\u679c\u3002<\/p>\n<p>\u4e3a\u6b64&#xff0c;tracing API \u81ea\u8eab\u628a\u5b83\u7684\u6240\u6709\u6570\u636e\u4fdd\u5b58\u5728 Emscripten \u5806\u4e4b\u5916&#xff0c;\u4e14\u4ece\u4e0d\u5411 Emscripten \u5806\u5199\u5165\u4efb\u4f55\u5185\u5bb9&#xff08;\u6570\u636e\u7ecf\u7531\u72ec\u7acb\u7684 Web Worker \u8f6c\u53d1\u7ed9\u670d\u52a1\u5668&#xff0c;\u89c1 src\/lib\/libtrace.js \u7684 EmscriptenTrace.worker \u8bbe\u8ba1&#xff09;\u3002<\/p>\n<h3>\u5341\u4e09\u3001\u5b8c\u6574 API \u53c2\u8003<\/h3>\n<p>\u4ee5\u4e0b\u4e3a system\/include\/emscripten\/trace.h \u58f0\u660e\u7684\u5168\u90e8\u51fd\u6570&#xff08;\u53c2\u6570\u7c7b\u578b\u89c1\u5934\u6587\u4ef6\u539f\u6587&#xff09;&#xff1a;<\/p>\n<table>\n<tr>\u51fd\u6570\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>emscripten_trace_configure(collector_url, application)<\/td>\n<td>\u914d\u7f6e\u4e0e collector \u670d\u52a1\u5668\u7684\u8fde\u63a5&#xff0c;\u5e94\u5728\u5e94\u7528\u542f\u52a8\u540e\u5c3d\u65e9\u8c03\u7528&#xff1b;collector_url \u901a\u5e38\u4e3a http:\/\/127.0.0.1:5000\/<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_configure_for_google_wtf()<\/td>\n<td>\u914d\u7f6e\u4e3a\u4e0e Google WTF \u901a\u4fe1&#xff1b;\u4ec5\u4e0a\u4e0b\u6587\u3001\u65e5\u5fd7\u6d88\u606f\u4e0e\u6807\u8bb0\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_configure_for_test()<\/td>\n<td>\u6d4b\u8bd5\u7528\u914d\u7f6e&#xff08;\u89c1 test\/core\/test_tracing.c&#xff09;&#xff0c;\u65f6\u95f4\u56fa\u5b9a\u4e3a 0 \u5e76\u76f4\u63a5\u8f93\u51fa\u8ffd\u8e2a\u6761\u76ee<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_set_enabled(enabled)<\/td>\n<td>\u8bbe\u7f6e\u8ffd\u8e2a\u662f\u5426\u542f\u7528&#xff1b;\u7981\u7528\u4f1a\u5f97\u5230\u4e0d\u51c6\u786e\u7684\u5185\u5b58\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_set_session_username(username)<\/td>\n<td>\u8bbe\u7f6e\u4f1a\u8bdd\u7528\u6237\u540d&#xff0c;\u4fbf\u4e8e\u591a\u7528\u6237\u5171\u4eab\u670d\u52a1\u5668\u65f6\u533a\u5206\u4f1a\u8bdd&#xff1b;\u53ef\u5728\u767b\u5f55\u540e\u8bbe\u7f6e<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_record_frame_start()<\/td>\n<td>\u5e27\/\u4e8b\u4ef6\u5faa\u73af\u5f00\u59cb\u5904\u8c03\u7528&#xff0c;\u670d\u52a1\u5668\u636e\u6b64\u8ba1\u7b97\u5e27\u65f6\u95f4\u4e0e FPS<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_record_frame_end()<\/td>\n<td>\u5e27\/\u4e8b\u4ef6\u5faa\u73af\u7ed3\u675f\u5904\u8c03\u7528&#xff0c;\u505c\u6b62\u5411\u8be5\u5e27\u7d2f\u8ba1\u5185\u5b58\u64cd\u4f5c\u4e0e\u8017\u65f6<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_log_message(channel, message)<\/td>\n<td>\u8bb0\u5f55\u65e5\u5fd7\u6d88\u606f&#xff08;\u901a\u9053 &#043; \u63cf\u8ff0&#xff09;&#xff0c;\u7528\u4e8e\u5173\u8054\u5185\u5b58\u4e0e\u5e27\u7387\u53d8\u5316&#xff1b;\u670d\u52a1\u5668\u5bf9\u8be5\u6570\u636e\u7684\u5229\u7528\u672a\u6765\u4f1a\u589e\u5f3a<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_mark(message)<\/td>\n<td>\u5728\u65f6\u95f4\u7ebf\u8bb0\u5f55\u6807\u8bb0&#xff0c;\u4e3b\u8981\u7528\u4e8e Google WTF<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_report_error(error)<\/td>\n<td>\u4e0a\u62a5\u9519\u8bef&#xff0c;\u81ea\u52a8\u9644\u5e26\u5f53\u524d\u8c03\u7528\u6808&#xff1b;\u53ef\u6355\u83b7 JS\/Worker \u9519\u8bef\u4e0e C\/C&#043;&#043; \u65ad\u8a00\u5931\u8d25<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_record_allocation(address, size)<\/td>\n<td>\u8bb0\u5f55\u4e00\u6b21\u5206\u914d&#xff0c;\u6700\u4f73\u63d2\u5165\u4f4d\u7f6e\u662f dlmalloc \u5b9e\u73b0&#xff08;\u5df2\u81ea\u52a8\u5b8c\u6210&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_record_reallocation(old_address, new_address, size)<\/td>\n<td>\u8bb0\u5f55\u4e00\u6b21\u91cd\u5206\u914d&#xff08;\u540c\u4e0a&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_record_free(address)<\/td>\n<td>\u8bb0\u5f55\u4e00\u6b21\u91ca\u653e&#xff1b;\u6ce8\u610f\u4e0d\u8981\u5bf9\u540c\u4e00\u6b21 free \u91cd\u590d\u8c03\u7528<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_annotate_address_type(address, type)<\/td>\n<td>\u7528\u6570\u636e\u7c7b\u578b\u540d\u6ce8\u91ca\u5730\u5740&#xff0c;\u670d\u52a1\u5668\u636e\u6b64\u505a\u5185\u5b58\u5185\u5bb9\u5206\u89e3<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_associate_storage_size(address, size)<\/td>\n<td>\u5173\u8054\u9644\u52a0\u5b58\u50a8\u91cf&#xff08;\u975e\u5206\u914d\u672c\u8eab\u5927\u5c0f&#xff09;&#xff0c;\u5982\u5bf9\u8c61\u5185 vector\/string \u5360\u7528\u7684\u5185\u5b58<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_report_memory_layout()<\/td>\n<td>\u5468\u671f\u4e0a\u62a5\u5806\u5e03\u5c40&#xff1a;\u6808\u3001\u52a8\u6001\u5185\u5b58\u4e0e\u603b\u5185\u5b58\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_report_off_heap_data()<\/td>\n<td>\u5468\u671f\u4e0a\u62a5\u5806\u5916\u5185\u5b58&#xff08;\u5f53\u524d\u4e3a OpenAL \u5185\u5b58&#xff1b;\u670d\u52a1\u5668\u6682\u4e0d\u5c55\u793a&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_enter_context(name)<\/td>\n<td>\u8fdb\u5165\u547d\u540d\u4e0a\u4e0b\u6587&#xff08;\u5e26\u65f6\u95f4\u6233&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_exit_context()<\/td>\n<td>\u9000\u51fa\u5f53\u524d\u4e0a\u4e0b\u6587<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_task_start(task_id, name)<\/td>\n<td>\u542f\u52a8\u4efb\u52a1&#xff0c;\u4efb\u52a1 ID \u987b\u5728\u5e94\u7528\u751f\u547d\u5468\u671f\u5185\u552f\u4e00<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_task_associate_data(key, value)<\/td>\n<td>\u4e3a\u5f53\u524d\u4efb\u52a1\u5173\u8054\u952e\u503c\u5bf9<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_task_suspend(explanation)<\/td>\n<td>\u6302\u8d77\u5f53\u524d\u4efb\u52a1&#xff0c;\u8bf4\u660e\u6302\u8d77\u539f\u56e0<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_task_resume(task_id, explanation)<\/td>\n<td>\u6062\u590d\u6307\u5b9a\u4efb\u52a1\u5e76\u8bbe\u4e3a\u5f53\u524d\u4efb\u52a1&#xff0c;\u8bf4\u660e\u6062\u590d\u76ee\u7684<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_task_end()<\/td>\n<td>\u7ed3\u675f\u5f53\u524d\u4efb\u52a1<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_close()<\/td>\n<td>\u5e94\u7528\u7ec8\u6b62\u65f6\u8c03\u7528&#xff0c;\u786e\u4fdd\u6570\u636e flush \u5230\u670d\u52a1\u5668\u5e76\u7ec8\u6b62\u8ffd\u8e2a\u4ee3\u7801<\/td>\n<\/tr>\n<tr>\n<td>emscripten_trace_sbrk_grow(old, new)<\/td>\n<td>\u8bb0\u5f55\u7a0b\u5e8f\u65ad\u70b9\u589e\u957f&#xff08;\u5185\u90e8\u4f7f\u7528&#xff0c;\u540c\u65f6\u89e6\u53d1 onSbrkGrow \u56de\u8c03&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>13.1 \u53c2\u8003\u6d4b\u8bd5&#xff1a;\u6700\u5c0f\u53ef\u8fd0\u884c\u793a\u4f8b<\/h4>\n<p>\u4ed3\u5e93\u4e2d\u7684 test\/core\/test_tracing.c \u63d0\u4f9b\u4e86\u4e00\u4e2a\u5b8c\u6574\u7684\u8ff7\u4f60\u793a\u4f8b&#xff0c;\u5c55\u793a\u6d4b\u8bd5\u6a21\u5f0f\u4e0b\u7684\u6807\u51c6\u7528\u6cd5&#xff1a;<\/p>\n<p>#include &lt;emscripten\/trace.h&gt;<\/p>\n<p>int main(int argc, const char* argv[]) {<br \/>\n  emscripten_trace_configure_for_test();<br \/>\n  emscripten_trace_enter_context(&#034;Application Startup&#034;);<br \/>\n  emscripten_trace_log_message(&#034;Application&#034;, &#034;starting up&#034;);<br \/>\n  emscripten_trace_exit_context();<br \/>\n  emscripten_trace_record_frame_start();<br \/>\n  emscripten_trace_record_frame_end();<br \/>\n  return 0;<br \/>\n}<\/p>\n<p>\u5b9e\u9645\u63a5\u5165 collector \u670d\u52a1\u5668\u65f6&#xff0c;\u628a emscripten_trace_configure_for_test() \u6362\u6210&#xff1a;<\/p>\n<p>emscripten_trace_configure(&#034;http:\/\/127.0.0.1:5000\/&#034;, &#034;MyApplication&#034;);<br \/>\nemscripten_trace_set_session_username(&#034;alice&#034;);<\/p>\n<h3>\u5341\u56db\u3001\u5b9e\u6218\u5efa\u8bae<\/h3>\n<li>\u63d2\u6869\u987a\u5e8f&#xff1a;configure \u2192 set_session_username&#xff08;\u5982\u6709&#xff09;\u2192 \u4e1a\u52a1\u903b\u8f91\u4e2d\u7684\u4e0a\u4e0b\u6587\/\u4efb\u52a1\/\u5e27\/\u65e5\u5fd7\u8c03\u7528 \u2192 \u9000\u51fa\u524d close\u3002<\/li>\n<li>\u5185\u5b58\u70ed\u70b9\u5b9a\u4f4d&#xff1a;\u5f00\u542f &#8211;tracing \u5e76 emcc &#8211;clear-cache \u540e&#xff0c;malloc\/realloc\/free \u81ea\u52a8\u88ab\u8bb0\u5f55&#xff1b;\u914d\u5408 annotate_address_type \u4e0e associate_storage_size \u53ef\u83b7\u5f97&#034;\u4ec0\u4e48\u7c7b\u578b\u5360\u4e86\u591a\u5c11\u5185\u5b58&#034;\u7684\u5206\u89e3\u89c6\u56fe\u3002<\/li>\n<li>\u5f02\u6b65\u6d41\u7a0b\u5206\u6790&#xff1a;\u5bf9\u8d44\u6e90\u52a0\u8f7d\u8fd9\u7c7b\u56de\u8c03\u94fe&#xff0c;\u4f7f\u7528 task_start \/ task_suspend&#xff08;\u5982 &#034;loading via HTTP&#034;&#xff09;\/ task_resume&#xff08;\u5982 &#034;parsing&#034;&#xff09;\/ task_end \u5b8c\u6574\u523b\u753b\u751f\u547d\u5468\u671f&#xff0c;\u5e76\u7528 task_associate_data \u8bb0\u5f55 URL \u7b49\u4e0a\u4e0b\u6587\u3002<\/li>\n<li>\u4f4e\u5f00\u9500\u7b56\u7565&#xff1a;\u4e0a\u4e0b\u6587\u6808\u4ee3\u66ff\u5b8c\u6574\u8c03\u7528\u6808\u3001Web Worker \u8f6c\u53d1 &#043; \u6bcf\u79d2 1&#xff5e;2 \u6b21\u6279\u91cf\u4e0a\u62a5\u3001\u5806\u5916\u7f13\u51b2\u2014\u2014\u4e09\u8005\u5171\u540c\u4fdd\u8bc1\u8ffd\u8e2a\u5bf9\u76ee\u6807\u5e94\u7528\u7684\u4fb5\u5165\u6027\u964d\u5230\u6700\u4f4e\u3002<\/li>\n<li>\u4fdd\u6301\u751f\u4ea7\u6784\u5efa\u5e72\u51c0&#xff1a;__EMSCRIPTEN_TRACING__ \u672a\u5b9a\u4e49\u65f6\u6240\u6709\u8c03\u7528\u9000\u5316\u4e3a\u7a7a\u6869\u5b8f&#xff0c;\u63d2\u6869\u4ee3\u7801\u53ef\u5b89\u5168\u5e38\u9a7b\u6e90\u7801\u3002<\/li>\n<h3>\u5ef6\u4f38\u9605\u8bfb<\/h3>\n<ul>\n<li>API \u5934\u6587\u4ef6\u4e0e\u7a7a\u6869\u5b9a\u4e49&#xff1a;system\/include\/emscripten\/trace.h<\/li>\n<li>JS \u8fd0\u884c\u65f6\u5b9e\u73b0&#xff08;\u4e8b\u4ef6\u534f\u8bae\u3001Worker \u8f6c\u53d1\u3001WTF \u6865\u63a5&#xff09;&#xff1a;src\/lib\/libtrace.js<\/li>\n<li>\u94fe\u63a5\u671f\u6ce8\u5165\u4e0e\u5bfc\u51fa\u8bbe\u7f6e&#xff1a;tools\/link.py<\/li>\n<li>libc \u8ffd\u8e2a\u53d8\u4f53\u6784\u5efa&#xff1a;tools\/system_libs.py<\/li>\n<li>dlmalloc \u5185\u81ea\u52a8\u63d2\u6869\u70b9&#xff1a;system\/lib\/dlmalloc.c<\/li>\n<li>\u5b98\u65b9 API \u6587\u6863\u539f\u6587&#xff1a;site\/source\/docs\/api_reference\/trace.h.rst<\/li>\n<\/ul>\n<p>  <img loading=\"lazy\" decoding=\"async\" class=\"gcb-icon-like\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261001174131-6abe9b4b3ec3f.svg\" alt=\"\" width=\"16\" height=\"16\" \/> <span class=\"gcb-like-text\">\u8d5e<\/span>  <\/p>\n<p>   <span class=\"gcb-share-text\">\u5206\u4eab<\/span>  <\/p>\n<ul class=\"gcb-tag-list\">\n<li><span class=\"gcb-tag\">\u7f16\u8bd1\u5668<\/span><\/li>\n<li><span class=\"gcb-tag\">WebAssembly<\/span><\/li>\n<li><span class=\"gcb-tag\">\u5f00\u53d1\u5de5\u5177<\/span><\/li>\n<li><span class=\"gcb-tag\">\u6784\u5efa\u5de5\u5177<\/span><\/li>\n<\/ul>\n<h3 class=\"gcb-project-title\">\u3010\u514d\u8d39\u4e0b\u8f7d\u94fe\u63a5\u3011emscripten<\/h3>\n<p class=\"gcb-project-desc\">Emscripten: An LLVM-to-WebAssembly Compiler<\/p>\n<p>    <span class=\"gcb-project-addr-label\">\u9879\u76ee\u5730\u5740&#xff1a;<\/span><br \/>\n    <span class=\"gcb-project-addr-link\">https:\/\/gitcode.com\/gh_mirrors\/em\/emscripten<\/span> <\/p>\n<p>  <span class=\"gcb-project-btn\"> <span class=\"gcb-project-btn-main\">\u70b9\u51fb\u67e5\u770b<\/span> <span class=\"gcb-project-btn-sub\">\u514d\u8d39\u4e0b\u8f7d<\/span> <\/span> <\/p>\n<h4 class=\"gcb-related-title\">\u76f8\u5173\u63a8\u8350<\/h4>\n<ul class=\"gcb-related-list\">\n<li class=\"gcb-related-item\">\n<h5 class=\"gcb-related-item-title\"> Firebase\u81ea\u5b9a\u4e49\u8ffd\u8e2a\u70b9&#xff1a;\u6df1\u5ea6\u89e3\u6790\u4e0e\u5b9e\u6218\u6307\u5357<\/h5>\n<p class=\"gcb-related-item-desc\">Firebase\u81ea\u5b9a\u4e49\u8ffd\u8e2a\u70b9&#xff1a;\u6df1\u5ea6\u89e3\u6790\u4e0e\u5b9e\u6218\u6307\u5357 \u5728\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d&#xff0c;\u7cbe\u51c6\u7684\u7528\u6237\u884c\u4e3a\u8ffd\u8e2a\u662f\u4ea7\u54c1\u4f18\u5316\u7684\u5173\u952e\u3002Firebase Analytics \u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u81ea\u5b9a\u4e49<\/p>\n<p>     <span class=\"gcb-tag\">\u79fb\u52a8\u5f00\u53d1<\/span><br \/>\n     <span class=\"gcb-tag\">\u540e\u7aef<\/span><br \/>\n     <span class=\"gcb-tag\">\u8ba4\u8bc1\u9274\u6743<\/span>\n      <\/li>\n<li class=\"gcb-related-item\">\n<h5 class=\"gcb-related-item-title\"> TBOX\u6df1\u5ea6\u5b9e\u6218&#xff1a;\u81ea\u5b9a\u4e49\u5185\u5b58\u5206\u914d\u5668\u4e0e\u6d41\u8fc7\u6ee4\u5668\u5f00\u53d1\u7ec8\u6781\u6307\u5357<\/h5>\n<p class=\"gcb-related-item-desc\">TBOX\u6df1\u5ea6\u5b9e\u6218&#xff1a;\u81ea\u5b9a\u4e49\u5185\u5b58\u5206\u914d\u5668\u4e0e\u6d41\u8fc7\u6ee4\u5668\u5f00\u53d1\u7ec8\u6781\u6307\u5357 TBOX\u4f5c\u4e3a\u8de8\u5e73\u53f0C\u8bed\u8a00\u5f00\u53d1\u5e93&#xff0c;\u5176\u6838\u5fc3\u529f\u80fd\u5305\u62ec \u81ea\u5b9a\u4e49\u5185\u5b58\u5206\u914d\u5668 \u548c \u6d41\u8fc7\u6ee4\u5668\u5f00\u53d1 &#xff0c;\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u6781<\/p>\n<\/li>\n<li class=\"gcb-related-item\">\n<h5 class=\"gcb-related-item-title\">\u5d4c\u5165\u5f0f\u56fe\u50cf\u8f6c\u6362\u6280\u672f&#xff1a;\u9762\u5411\u5de5\u4e1a\u7ea7\u5e94\u7528\u7684\u9ad8\u6027\u80fd\u96f6\u4f9d\u8d56\u89e3\u51b3\u65b9\u6848<\/h5>\n<p class=\"gcb-related-item-desc\">\u5d4c\u5165\u5f0f\u56fe\u50cf\u8f6c\u6362\u6280\u672f&#xff1a;\u9762\u5411\u5de5\u4e1a\u7ea7\u5e94\u7528\u7684\u9ad8\u6027\u80fd\u96f6\u4f9d\u8d56\u89e3\u51b3\u65b9\u6848 \u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u5f00\u53d1\u9886\u57df&#xff0c;\u56fe\u50cf\u548c\u5b57\u4f53\u8d44\u6e90\u7684\u4f18\u5316\u8f6c\u6362\u662f\u51b3\u5b9a\u4ea7\u54c1\u6027\u80fd\u4e0e\u5b58\u50a8\u6548\u7387\u7684\u5173\u952e\u73af\u8282\u3002LCD Image <\/p>\n<p>     <span class=\"gcb-tag\">\u684c\u9762\u5e94\u7528<\/span><br \/>\n     <span class=\"gcb-tag\">\u5d4c\u5165\u5f0f<\/span><br \/>\n     <span class=\"gcb-tag\">\u5f00\u53d1\u5de5\u5177<\/span><br \/>\n     <span class=\"gcb-tag\">\u56fe\u50cf\u5904\u7406<\/span>\n      <\/li>\n<\/ul>\n<p>  <span class=\"gcb-prev-next-label\">\u4e0a\u4e00\u7bc7&#xff1a;<\/span><br \/>\n   CodeMirror 5\u952e\u76d8\u6620\u5c04\u7ec8\u6781\u6307\u5357&#xff1a;Emacs\u3001Vim\u3001Sublime\u98ce\u683c\u5feb\u6377\u952e\u8bbe\u7f6e\u8be6\u89e3 <\/p>\n<p>  <span class=\"gcb-prev-next-label\">\u4e0b\u4e00\u7bc7&#xff1a;<\/span><br \/>\n  G-Helper \u914d\u7f6e\u6559\u7a0b&#xff1a;\u7528\u8fd9\u6b3e\u5f00\u6e90\u8f7b\u91cf\u66ff\u4ee3 Armoury Crate \u7684\u8c03\u9f20\u6807 DPI \u4e0e\u8f6e\u8be2\u7387 <\/p>\n<p>\u521b\u4f5c\u58f0\u660e\uff1a\u672c\u6587\u90e8\u5206\u5185\u5bb9\u7531AI\u8f85\u52a9\u751f\u6210\uff08AIGC\uff09\uff0c\u4ec5\u4f9b\u53c2\u8003<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7f16\u8bd1\u5668WebAssembly\u5f00\u53d1\u5de5\u5177\u6784\u5efa\u5de5\u5177 \u3010\u514d\u8d39\u4e0b\u8f7d\u94fe\u63a5\u3011emscripten Emscripten: An LLVM-to-WebAssembly Compiler \u9879\u76ee\u5730\u5740&#xff1a; https:\/\/gitcode.com\/gh_mirrors\/em\/emscripten \u70b9\u51fb\u67e5\u770b \u514d\u8d39\u4e0b\u8f7d  \u5bfc\u8bfb<br \/>\nEmscripten \u7684 tracing API \u4e3a WebAssembly \u5e94\u7528\u63d0\u4f9b\u4e86\u4e00\u5957\u7aef\u5230\u7aef\u7684\u8fd0\u884c\u65f6\u8ffd\u8e2a\u80fd\u529b&#xff0c;\u91cd\u70b9\u89e3\u51b3\u6d4f\u89c8\u5668\u81ea\u5e26\u6027\u80fd\u5de5\u5177\u96be\u4ee5\u89c2<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-111888","post","type-post","status-publish","format-standard","hentry","category-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Emscripten tracing.h \u8ffd\u8e2a API \u6df1\u5ea6\u6307\u5357\uff1a\u5185\u5b58\u5206\u914d\u53ef\u89c6\u5316\u4e0e\u81ea\u5b9a\u4e49\u6536\u96c6\u670d\u52a1\u5668\u5b9e\u6218 - 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