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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/dom_storage/dom_storage_task_runner.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/message_loop_proxy.h"
#include "base/tracked_objects.h"
namespace dom_storage {
// DomStorageTaskRunner
bool DomStorageTaskRunner::RunsTasksOnCurrentThread() const {
return IsRunningOnSequence(PRIMARY_SEQUENCE);
}
// DomStorageWorkerPoolTaskRunner
DomStorageWorkerPoolTaskRunner::DomStorageWorkerPoolTaskRunner(
base::SequencedWorkerPool* sequenced_worker_pool,
base::SequencedWorkerPool::SequenceToken primary_sequence_token,
base::SequencedWorkerPool::SequenceToken commit_sequence_token,
base::MessageLoopProxy* delayed_task_loop)
: message_loop_(delayed_task_loop),
sequenced_worker_pool_(sequenced_worker_pool),
primary_sequence_token_(primary_sequence_token),
commit_sequence_token_(commit_sequence_token) {
}
DomStorageWorkerPoolTaskRunner::~DomStorageWorkerPoolTaskRunner() {
}
bool DomStorageWorkerPoolTaskRunner::PostDelayedTask(
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) {
// Note base::TaskRunner implements PostTask in terms of PostDelayedTask
// with a delay of zero, we detect that usage and avoid the unecessary
// trip thru the message loop.
if (delay == base::TimeDelta()) {
return sequenced_worker_pool_->PostSequencedWorkerTaskWithShutdownBehavior(
primary_sequence_token_, from_here, task,
base::SequencedWorkerPool::BLOCK_SHUTDOWN);
}
// Post a task to call this->PostTask() after the delay.
return message_loop_->PostDelayedTask(
FROM_HERE,
base::Bind(base::IgnoreResult(&DomStorageWorkerPoolTaskRunner::PostTask),
this, from_here, task),
delay);
}
bool DomStorageWorkerPoolTaskRunner::PostShutdownBlockingTask(
const tracked_objects::Location& from_here,
SequenceID sequence_id,
const base::Closure& task) {
return sequenced_worker_pool_->PostSequencedWorkerTaskWithShutdownBehavior(
IDtoToken(sequence_id), from_here, task,
base::SequencedWorkerPool::BLOCK_SHUTDOWN);
}
bool DomStorageWorkerPoolTaskRunner::IsRunningOnSequence(
SequenceID sequence_id) const {
return sequenced_worker_pool_->IsRunningSequenceOnCurrentThread(
IDtoToken(sequence_id));
}
base::SequencedWorkerPool::SequenceToken
DomStorageWorkerPoolTaskRunner::IDtoToken(SequenceID id) const {
if (id == PRIMARY_SEQUENCE)
return primary_sequence_token_;
DCHECK_EQ(COMMIT_SEQUENCE, id);
return commit_sequence_token_;
}
// MockDomStorageTaskRunner
MockDomStorageTaskRunner::MockDomStorageTaskRunner(
base::MessageLoopProxy* message_loop)
: message_loop_(message_loop) {
}
MockDomStorageTaskRunner::~MockDomStorageTaskRunner() {
}
bool MockDomStorageTaskRunner::PostDelayedTask(
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) {
return message_loop_->PostTask(from_here, task);
}
bool MockDomStorageTaskRunner::PostShutdownBlockingTask(
const tracked_objects::Location& from_here,
SequenceID sequence_id,
const base::Closure& task) {
return message_loop_->PostTask(from_here, task);
}
bool MockDomStorageTaskRunner::IsRunningOnSequence(SequenceID) const {
return message_loop_->RunsTasksOnCurrentThread();
}
} // namespace dom_storage
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