// Copyright 2013 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
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#define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
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#include <functional>
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#include <map>
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#include <memory>
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#include <queue>
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#include <vector>
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#include "include/libplatform/libplatform-export.h"
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#include "include/libplatform/libplatform.h"
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#include "include/libplatform/v8-tracing.h"
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#include "include/v8-platform.h"
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#include "src/base/compiler-specific.h"
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#include "src/base/macros.h"
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#include "src/base/platform/mutex.h"
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#include "src/base/platform/time.h"
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namespace v8 {
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namespace platform {
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class Thread;
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class WorkerThread;
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class DefaultForegroundTaskRunner;
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class DefaultWorkerThreadsTaskRunner;
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class DefaultPageAllocator;
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class V8_PLATFORM_EXPORT DefaultPlatform : public NON_EXPORTED_BASE(Platform) {
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public:
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explicit DefaultPlatform(
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IdleTaskSupport idle_task_support = IdleTaskSupport::kDisabled,
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std::unique_ptr<v8::TracingController> tracing_controller = {});
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virtual ~DefaultPlatform();
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void SetThreadPoolSize(int thread_pool_size);
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void EnsureBackgroundTaskRunnerInitialized();
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bool PumpMessageLoop(
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v8::Isolate* isolate,
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MessageLoopBehavior behavior = MessageLoopBehavior::kDoNotWait);
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void RunIdleTasks(v8::Isolate* isolate, double idle_time_in_seconds);
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void SetTracingController(
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std::unique_ptr<v8::TracingController> tracing_controller);
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using TimeFunction = double (*)();
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void SetTimeFunctionForTesting(TimeFunction time_function);
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// v8::Platform implementation.
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int NumberOfWorkerThreads() override;
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std::shared_ptr<TaskRunner> GetForegroundTaskRunner(
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v8::Isolate* isolate) override;
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void CallOnWorkerThread(std::unique_ptr<Task> task) override;
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void CallDelayedOnWorkerThread(std::unique_ptr<Task> task,
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double delay_in_seconds) override;
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void CallOnForegroundThread(v8::Isolate* isolate, Task* task) override;
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void CallDelayedOnForegroundThread(Isolate* isolate, Task* task,
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double delay_in_seconds) override;
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void CallIdleOnForegroundThread(Isolate* isolate, IdleTask* task) override;
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bool IdleTasksEnabled(Isolate* isolate) override;
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double MonotonicallyIncreasingTime() override;
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double CurrentClockTimeMillis() override;
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v8::TracingController* GetTracingController() override;
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StackTracePrinter GetStackTracePrinter() override;
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v8::PageAllocator* GetPageAllocator() override;
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private:
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static const int kMaxThreadPoolSize;
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base::Mutex lock_;
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int thread_pool_size_;
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IdleTaskSupport idle_task_support_;
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std::shared_ptr<DefaultWorkerThreadsTaskRunner> worker_threads_task_runner_;
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std::map<v8::Isolate*, std::shared_ptr<DefaultForegroundTaskRunner>>
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foreground_task_runner_map_;
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std::unique_ptr<TracingController> tracing_controller_;
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std::unique_ptr<PageAllocator> page_allocator_;
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TimeFunction time_function_for_testing_;
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DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
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};
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} // namespace platform
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} // namespace v8
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#endif // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
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