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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GIN_PUBLIC_V8_PLATFORM_H_
#define GIN_PUBLIC_V8_PLATFORM_H_
#include "base/compiler_specific.h"
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "gin/gin_export.h"
#include "v8/include/v8-platform.h"
namespace gin {
// A v8::Platform implementation to use with gin.
class GIN_EXPORT V8Platform : public NON_EXPORTED_BASE(v8::Platform) {
public:
static V8Platform* Get();
// v8::Platform implementation.
size_t NumberOfAvailableBackgroundThreads() override;
void CallOnBackgroundThread(
v8::Task* task,
v8::Platform::ExpectedRuntime expected_runtime) override;
void CallOnForegroundThread(v8::Isolate* isolate, v8::Task* task) override;
void CallDelayedOnForegroundThread(v8::Isolate* isolate,
v8::Task* task,
double delay_in_seconds) override;
void CallIdleOnForegroundThread(v8::Isolate* isolate,
v8::IdleTask* task) override;
bool IdleTasksEnabled(v8::Isolate* isolate) override;
double MonotonicallyIncreasingTime() override;
const uint8_t* GetCategoryGroupEnabled(const char* name) override;
const char* GetCategoryGroupName(
const uint8_t* category_enabled_flag) override;
uint64_t AddTraceEvent(
char phase,
const uint8_t* category_enabled_flag,
const char* name,
const char* scope,
uint64_t id,
uint64_t bind_id,
int32_t num_args,
const char** arg_names,
const uint8_t* arg_types,
const uint64_t* arg_values,
std::unique_ptr<v8::ConvertableToTraceFormat>* arg_convertibles,
unsigned int flags) override;
void UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
const char* name,
uint64_t handle) override;
void AddTraceStateObserver(v8::Platform::TraceStateObserver*) override;
void RemoveTraceStateObserver(v8::Platform::TraceStateObserver*) override;
private:
friend struct base::DefaultLazyInstanceTraits<V8Platform>;
V8Platform();
~V8Platform() override;
DISALLOW_COPY_AND_ASSIGN(V8Platform);
};
} // namespace gin
#endif // GIN_PUBLIC_V8_PLATFORM_H_
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