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// Copyright 2016 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_TEST_INSPECTOR_PROTOCOL_TASK_RUNNER_H_
#define V8_TEST_INSPECTOR_PROTOCOL_TASK_RUNNER_H_
#include <map>
#include <memory>
#include "src/base/platform/platform.h"
#include "src/utils/locked-queue.h"
#include "test/inspector/isolate-data.h"
namespace v8 {
class StartupData;
namespace internal {
enum CatchExceptions {
kFailOnUncaughtExceptions,
kStandardPropagateUncaughtExceptions,
kSuppressUncaughtExceptions
};
class TaskRunner : public v8::base::Thread {
public:
class Task {
public:
virtual ~Task() = default;
virtual bool is_priority_task() = 0;
virtual void Run(InspectorIsolateData* data) = 0;
};
TaskRunner(InspectorIsolateData::SetupGlobalTasks setup_global_tasks,
CatchExceptions catch_exceptions,
v8::base::Semaphore* ready_semaphore,
v8::StartupData* startup_data, WithInspector with_inspector);
~TaskRunner() override;
TaskRunner(const TaskRunner&) = delete;
TaskRunner& operator=(const TaskRunner&) = delete;
InspectorIsolateData* data() const { return data_.get(); }
// Thread implementation.
void Run() override;
// Should be called from the same thread and only from task.
void RunMessageLoop(bool only_protocol);
void QuitMessageLoop();
void Append(std::unique_ptr<Task>);
void InterruptForMessages();
void Terminate();
private:
std::unique_ptr<Task> GetNext(bool only_protocol);
v8::Isolate* isolate() const { return data_->isolate(); }
InspectorIsolateData::SetupGlobalTasks setup_global_tasks_;
v8::StartupData* startup_data_;
WithInspector with_inspector_;
CatchExceptions catch_exceptions_;
v8::base::Semaphore* ready_semaphore_;
std::unique_ptr<InspectorIsolateData> data_;
// deferred_queue_ combined with queue_ (in this order) have all tasks in the
// correct order. Sometimes we skip non-protocol tasks by moving them from
// queue_ to deferred_queue_.
v8::internal::LockedQueue<std::unique_ptr<Task>> queue_;
v8::internal::LockedQueue<std::unique_ptr<Task>> deferred_queue_;
v8::base::Semaphore process_queue_semaphore_;
int nested_loop_count_;
std::atomic<int> is_terminated_;
};
} // namespace internal
} // namespace v8
#endif // V8_TEST_INSPECTOR_PROTOCOL_TASK_RUNNER_H_
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