Add trace event to V8 compiler API.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 1900 matching lines @@
       i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared()));
 }
 
 
 MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundInternal(
     Isolate* v8_isolate, Source* source, CompileOptions options,
     bool is_module) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
   PREPARE_FOR_EXECUTION_WITH_ISOLATE(isolate, ScriptCompiler, CompileUnbound,
                                      UnboundScript);
+  TRACE_EVENT0("v8", "V8.ScriptCompiler");
 
   // Don't try to produce any kind of cache when the debugger is loaded.
   if (isolate->debug()->is_loaded() &&
       (options == kProduceParserCache || options == kProduceCodeCache)) {
     options = kNoCompileOptions;
   }
 
   i::ScriptData* script_data = NULL;
   if (options == kConsumeParserCache || options == kConsumeCodeCache) {
     DCHECK(source->cached_data);
@@ skipping 140 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(IsIdentifierHelper);
 };
 
 
 MaybeLocal<Function> ScriptCompiler::CompileFunctionInContext(
     Local<Context> v8_context, Source* source, size_t arguments_count,
     Local<String> arguments[], size_t context_extension_count,
     Local<Object> context_extensions[]) {
   PREPARE_FOR_EXECUTION(v8_context, ScriptCompiler, CompileFunctionInContext,
                         Function);
+  TRACE_EVENT0("v8", "V8.ScriptCompiler");
   i::Handle<i::String> source_string;
   auto factory = isolate->factory();
   if (arguments_count) {
     source_string = factory->NewStringFromStaticChars("(function(");
     for (size_t i = 0; i < arguments_count; ++i) {
       IsIdentifierHelper helper;
       if (!helper.Check(*Utils::OpenHandle(*arguments[i]))) {
         return Local<Function>();
       }
       has_pending_exception =
@@ skipping 94 matching lines @@
   return new i::BackgroundParsingTask(source->impl(), options,
                                       i::FLAG_stack_size, isolate);
 }
 
 
 MaybeLocal<Script> ScriptCompiler::Compile(Local<Context> context,
                                            StreamedSource* v8_source,
                                            Local<String> full_source_string,
                                            const ScriptOrigin& origin) {
   PREPARE_FOR_EXECUTION(context, ScriptCompiler, Compile, Script);
+  TRACE_EVENT0("v8", "V8.ScriptCompiler");
   i::StreamedSource* source = v8_source->impl();
   i::Handle<i::String> str = Utils::OpenHandle(*(full_source_string));
   i::Handle<i::Script> script = isolate->factory()->NewScript(str);
   if (!origin.ResourceName().IsEmpty()) {
     script->set_name(*Utils::OpenHandle(*(origin.ResourceName())));
   }
   if (!origin.ResourceLineOffset().IsEmpty()) {
     script->set_line_offset(
         static_cast<int>(origin.ResourceLineOffset()->Value()));
   }
@@ skipping 6742 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8