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// 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.
#include "gin/v8_foreground_task_runner_with_locker.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "v8/include/v8-locker.h"
namespace gin {
V8ForegroundTaskRunnerWithLocker::V8ForegroundTaskRunnerWithLocker(
v8::Isolate* isolate,
scoped_refptr<base::SingleThreadTaskRunner> task_runner)
: isolate_(isolate), task_runner_(std::move(task_runner)) {
DCHECK(task_runner_);
}
V8ForegroundTaskRunnerWithLocker::~V8ForegroundTaskRunnerWithLocker() = default;
namespace {
void RunWithLocker(v8::Isolate* isolate, std::unique_ptr<v8::Task> task) {
v8::Locker lock(isolate);
task->Run();
}
class IdleTaskWithLocker : public v8::IdleTask {
public:
IdleTaskWithLocker(v8::Isolate* isolate, std::unique_ptr<v8::IdleTask> task)
: isolate_(isolate), task_(std::move(task)) {}
IdleTaskWithLocker(const IdleTaskWithLocker&) = delete;
IdleTaskWithLocker& operator=(const IdleTaskWithLocker&) = delete;
~IdleTaskWithLocker() override = default;
// v8::IdleTask implementation.
void Run(double deadline_in_seconds) override {
v8::Locker lock(isolate_);
task_->Run(deadline_in_seconds);
}
private:
raw_ptr<v8::Isolate> isolate_;
std::unique_ptr<v8::IdleTask> task_;
};
} // namespace
void V8ForegroundTaskRunnerWithLocker::PostTask(
std::unique_ptr<v8::Task> task) {
task_runner_->PostTask(
FROM_HERE, base::BindOnce(RunWithLocker, base::Unretained(isolate_),
std::move(task)));
}
void V8ForegroundTaskRunnerWithLocker::PostNonNestableTask(
std::unique_ptr<v8::Task> task) {
task_runner_->PostNonNestableTask(
FROM_HERE, base::BindOnce(RunWithLocker, base::Unretained(isolate_),
std::move(task)));
}
void V8ForegroundTaskRunnerWithLocker::PostDelayedTask(
std::unique_ptr<v8::Task> task,
double delay_in_seconds) {
task_runner_->PostDelayedTask(
FROM_HERE,
base::BindOnce(RunWithLocker, base::Unretained(isolate_),
std::move(task)),
base::Seconds(delay_in_seconds));
}
void V8ForegroundTaskRunnerWithLocker::PostIdleTask(
std::unique_ptr<v8::IdleTask> task) {
DCHECK(IdleTasksEnabled());
idle_task_runner()->PostIdleTask(
std::make_unique<IdleTaskWithLocker>(isolate_, std::move(task)));
}
bool V8ForegroundTaskRunnerWithLocker::NonNestableTasksEnabled() const {
return true;
}
} // namespace gin
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