| // Copyright 2017 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GIN_V8_FOREGROUND_TASK_RUNNER_WITH_LOCKER_H_ |
| #define GIN_V8_FOREGROUND_TASK_RUNNER_WITH_LOCKER_H_ |
| |
| #include "base/memory/raw_ptr.h" |
| #include "base/memory/ref_counted.h" |
| #include "gin/v8_foreground_task_runner_base.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace gin { |
| |
| class V8ForegroundTaskRunnerWithLocker : public V8ForegroundTaskRunnerBase { |
| public: |
| V8ForegroundTaskRunnerWithLocker( |
| v8::Isolate* isolate, |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner); |
| |
| ~V8ForegroundTaskRunnerWithLocker() override; |
| |
| // v8::Platform implementation. |
| void PostTask(std::unique_ptr<v8::Task> task) override; |
| |
| void PostNonNestableTask(std::unique_ptr<v8::Task> task) override; |
| |
| void PostDelayedTask(std::unique_ptr<v8::Task> task, |
| double delay_in_seconds) override; |
| |
| void PostIdleTask(std::unique_ptr<v8::IdleTask> task) override; |
| |
| bool NonNestableTasksEnabled() const override; |
| |
| private: |
| // This dangles because the isolate must be disposed before the task runner |
| // can safely be destroyed. V8-managed tasks in other threads might try to |
| // post more tasks whilst the isolate is being disposed (before V8 cancels |
| // them as part of disposal). |
| // |
| // Once the isolate is disposed, V8 has made sure that no more tasks should be |
| // running or get posted, and this task runner will quickly get destroyed |
| // afterwards. |
| raw_ptr<v8::Isolate, DanglingUntriaged> isolate_; |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| }; |
| |
| } // namespace gin |
| |
| #endif // GIN_V8_FOREGROUND_TASK_RUNNER_WITH_LOCKER_H_ |