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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/task/single_thread_task_executor.h"
#include "base/message_loop/message_pump.h"
#include "base/message_loop/message_pump_type.h"
#include "base/task/sequence_manager/sequence_manager.h"
#include "base/task/sequence_manager/sequence_manager_impl.h"
#include "build/build_config.h"
namespace base {
SingleThreadTaskExecutor::SingleThreadTaskExecutor(MessagePumpType type)
: SingleThreadTaskExecutor(type, MessagePump::Create(type)) {
DCHECK_NE(type, MessagePumpType::CUSTOM);
}
SingleThreadTaskExecutor::SingleThreadTaskExecutor(
std::unique_ptr<MessagePump> pump)
: SingleThreadTaskExecutor(MessagePumpType::CUSTOM, std::move(pump)) {}
SingleThreadTaskExecutor::SingleThreadTaskExecutor(
MessagePumpType type,
std::unique_ptr<MessagePump> pump)
: sequence_manager_(sequence_manager::CreateUnboundSequenceManager(
sequence_manager::SequenceManager::Settings::Builder()
.SetMessagePumpType(type)
.Build())),
default_task_queue_(
sequence_manager_->CreateTaskQueue(sequence_manager::TaskQueue::Spec(
sequence_manager::QueueName::DEFAULT_TQ))),
type_(type) {
sequence_manager_->SetDefaultTaskRunner(task_runner());
sequence_manager_->BindToMessagePump(std::move(pump));
}
SingleThreadTaskExecutor::~SingleThreadTaskExecutor() = default;
const scoped_refptr<SingleThreadTaskRunner>&
SingleThreadTaskExecutor::task_runner() const {
return default_task_queue_->task_runner();
}
void SingleThreadTaskExecutor::SetWorkBatchSize(int work_batch_size) {
sequence_manager_->SetWorkBatchSize(work_batch_size);
}
} // namespace base
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