static bool SendFunctionsToPerf(JSContext *cx, AsmJSModule &module) { if (!PerfFuncEnabled()) return true; uintptr_t base = (uintptr_t) module.functionCode(); const char *filename = module.sourceDesc().scriptSource()->filename(); for (unsigned i = 0; i < module.numPerfFunctions(); i++) { const AsmJSModule::ProfiledFunction &func = module.perfProfiledFunction(i); uintptr_t start = base + (unsigned long) func.startCodeOffset; uintptr_t end = base + (unsigned long) func.endCodeOffset; JS_ASSERT(end >= start); size_t size = end - start; JSAutoByteString bytes; const char *name = AtomToPrintableString(cx, func.name, &bytes); if (!name) return false; writePerfSpewerAsmJSFunctionMap(start, size, filename, func.lineno, func.columnIndex, name); } return true; }
static bool SendBlocksToPerf(JSContext *cx, AsmJSModule &module) { if (!PerfBlockEnabled()) return true; unsigned long funcBaseAddress = (unsigned long) module.functionCode(); const char *filename = module.sourceDesc().scriptSource()->filename(); for (unsigned i = 0; i < module.numPerfBlocksFunctions(); i++) { const AsmJSModule::ProfiledBlocksFunction &func = module.perfProfiledBlocksFunction(i); size_t size = func.endCodeOffset - func.startCodeOffset; JSAutoByteString bytes; const char *name = AtomToPrintableString(cx, func.name, &bytes); if (!name) return false; writePerfSpewerAsmJSBlocksMap(funcBaseAddress, func.startCodeOffset, func.endInlineCodeOffset, size, filename, name, func.blocks); } return true; }
static bool HandleDynamicLinkFailure(JSContext *cx, CallArgs args, AsmJSModule &module, HandlePropertyName name) { if (cx->isExceptionPending()) return false; const AsmJSModuleSourceDesc &desc= module.sourceDesc(); uint32_t length = desc.bufEnd() - desc.bufStart(); Rooted<JSStableString*> src(cx, desc.scriptSource()->substring(cx, desc.bufStart(), desc.bufEnd())); if (!src) return false; RootedFunction fun(cx, NewFunction(cx, NullPtr(), NULL, 0, JSFunction::INTERPRETED, cx->global(), name, JSFunction::FinalizeKind, TenuredObject)); if (!fun) return false; AutoNameVector formals(cx); formals.reserve(3); if (module.globalArgumentName()) formals.infallibleAppend(module.globalArgumentName()); if (module.importArgumentName()) formals.infallibleAppend(module.importArgumentName()); if (module.bufferArgumentName()) formals.infallibleAppend(module.bufferArgumentName()); CompileOptions options(cx); options.setPrincipals(cx->compartment()->principals) .setOriginPrincipals(desc.scriptSource()->originPrincipals()) .setCompileAndGo(false) .setNoScriptRval(false); if (!frontend::CompileFunctionBody(cx, &fun, options, formals, src->chars().get(), length)) return false; // Call the function we just recompiled. unsigned argc = args.length(); InvokeArgs args2(cx); if (!args2.init(argc)) return false; args2.setCallee(ObjectValue(*fun)); args2.setThis(args.thisv()); for (unsigned i = 0; i < argc; i++) args2[i].set(args[i]); if (!Invoke(cx, args2)) return false; args.rval().set(args2.rval()); return true; }