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// Copyright 2013 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.
#ifndef V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
#define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
#include <functional>
#include <map>
#include <memory>
#include <queue>
#include <vector>
#include "include/libplatform/libplatform-export.h"
#include "include/libplatform/v8-tracing.h"
#include "include/v8-platform.h"
#include "src/base/compiler-specific.h"
#include "src/base/macros.h"
#include "src/base/platform/mutex.h"
#include "src/libplatform/task-queue.h"
namespace v8 {
namespace platform {
class TaskQueue;
class Thread;
class WorkerThread;
namespace tracing {
class TracingController;
}
class V8_PLATFORM_EXPORT DefaultPlatform : public NON_EXPORTED_BASE(Platform) {
public:
DefaultPlatform();
virtual ~DefaultPlatform();
void SetThreadPoolSize(int thread_pool_size);
void EnsureInitialized();
bool PumpMessageLoop(v8::Isolate* isolate);
void RunIdleTasks(v8::Isolate* isolate, double idle_time_in_seconds);
// v8::Platform implementation.
size_t NumberOfAvailableBackgroundThreads() override;
void CallOnBackgroundThread(Task* task,
ExpectedRuntime expected_runtime) override;
void CallOnForegroundThread(v8::Isolate* isolate, Task* task) override;
void CallDelayedOnForegroundThread(Isolate* isolate, Task* task,
double delay_in_seconds) override;
void CallIdleOnForegroundThread(Isolate* isolate, IdleTask* task) override;
bool IdleTasksEnabled(Isolate* isolate) override;
double MonotonicallyIncreasingTime() override;
const uint8_t* GetCategoryGroupEnabled(const char* name) override;
const char* GetCategoryGroupName(
const uint8_t* category_enabled_flag) override;
using Platform::AddTraceEvent;
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_convertables,
unsigned int flags) override;
void UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
const char* name, uint64_t handle) override;
void SetTracingController(tracing::TracingController* tracing_controller);
void AddTraceStateObserver(TraceStateObserver* observer) override;
void RemoveTraceStateObserver(TraceStateObserver* observer) override;
private:
static const int kMaxThreadPoolSize;
Task* PopTaskInMainThreadQueue(v8::Isolate* isolate);
Task* PopTaskInMainThreadDelayedQueue(v8::Isolate* isolate);
IdleTask* PopTaskInMainThreadIdleQueue(v8::Isolate* isolate);
base::Mutex lock_;
bool initialized_;
int thread_pool_size_;
std::vector<WorkerThread*> thread_pool_;
TaskQueue queue_;
std::map<v8::Isolate*, std::queue<Task*>> main_thread_queue_;
std::map<v8::Isolate*, std::queue<IdleTask*>> main_thread_idle_queue_;
typedef std::pair<double, Task*> DelayedEntry;
std::map<v8::Isolate*,
std::priority_queue<DelayedEntry, std::vector<DelayedEntry>,
std::greater<DelayedEntry> > >
main_thread_delayed_queue_;
std::unique_ptr<tracing::TracingController> tracing_controller_;
DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
};
} // namespace platform
} // namespace v8
#endif // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
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