src/v8/test/cctest/profiler-extension.cc

// Copyright 2013 the V8 project authors. All rights reserved.
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// Tests of profiles generator and utilities.

#include "test/cctest/profiler-extension.h"
#include "test/cctest/cctest.h"

namespace v8 {
namespace internal {

v8::CpuProfiler* ProfilerExtension::profiler_ = nullptr;
v8::CpuProfile* ProfilerExtension::last_profile = nullptr;
const char* ProfilerExtension::kSource =
    "native function startProfiling();"
    "native function stopProfiling();"
    "native function collectSample();";

v8::Local<v8::FunctionTemplate> ProfilerExtension::GetNativeFunctionTemplate(
    v8::Isolate* isolate, v8::Local<v8::String> name) {
  v8::Local<v8::Context> context = isolate->GetCurrentContext();
  if (name->Equals(context, v8_str(isolate, "startProfiling")).FromJust()) {
    return v8::FunctionTemplate::New(isolate,
                                     ProfilerExtension::StartProfiling);
  }
  if (name->Equals(context, v8_str(isolate, "stopProfiling")).FromJust()) {
    return v8::FunctionTemplate::New(isolate, ProfilerExtension::StopProfiling);
  }
  if (name->Equals(context, v8_str(isolate, "collectSample")).FromJust()) {
    return v8::FunctionTemplate::New(isolate, ProfilerExtension::CollectSample);
  }
  UNREACHABLE();
}

void ProfilerExtension::StartProfiling(
    const v8::FunctionCallbackInfo<v8::Value>& args) {
  last_profile = nullptr;
  profiler_->StartProfiling(args.Length() > 0
                                ? args[0].As<v8::String>()
                                : v8::String::Empty(args.GetIsolate()));
}

void ProfilerExtension::StopProfiling(
    const v8::FunctionCallbackInfo<v8::Value>& args) {
  last_profile = profiler_->StopProfiling(
      args.Length() > 0 ? args[0].As<v8::String>()
                        : v8::String::Empty(args.GetIsolate()));
}

void ProfilerExtension::CollectSample(
    const v8::FunctionCallbackInfo<v8::Value>& args) {
  v8::CpuProfiler::CollectSample(args.GetIsolate());
}

}  // namespace internal
}  // namespace v8