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// Copyright (c) 2011 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 "jingle/glue/thread_wrapper.h"
namespace jingle_glue {
// static
void JingleThreadWrapper::EnsureForCurrentThread() {
talk_base::Thread* current_thread = talk_base::Thread::Current();
// If JingleThreadWrapper already exists for the current thread then
// it is returned by talk_base::Thread::Current().
// talk_base::Thread::Current() may also return non-null value for
// the main thread because talk_base::ThreadManager creates
// talk_base::Thread object for it. IsOwned() allows to distinguish
// talk_base::Thread object created by talk_base::ThreadManager from
// other talk_base::Thread objects. Because talk_base::Thread
// objects should never created by chromium code, we can assume that
// if talk_base::Thread::Current() returns non-null value and it
// isn't the object created by talk_base::ThreadManager then
// JingleThreadWrapper already exists for the current thread.
if (current_thread == NULL || !current_thread->IsOwned()) {
new JingleThreadWrapper(MessageLoop::current());
}
}
JingleThreadWrapper::JingleThreadWrapper(MessageLoop* message_loop)
: message_loop_(message_loop) {
DCHECK_EQ(message_loop_, MessageLoop::current());
talk_base::ThreadManager::SetCurrent(this);
talk_base::MessageQueueManager::Instance()->Add(this);
message_loop_->AddDestructionObserver(this);
}
JingleThreadWrapper::~JingleThreadWrapper() {
}
void JingleThreadWrapper::WillDestroyCurrentMessageLoop() {
talk_base::ThreadManager::SetCurrent(NULL);
talk_base::MessageQueueManager::Instance()->Remove(this);
message_loop_->RemoveDestructionObserver(this);
delete this;
}
void JingleThreadWrapper::Post(
talk_base::MessageHandler* handler, uint32 message_id,
talk_base::MessageData* data, bool time_sensitive) {
PostTaskInternal(0, handler, message_id, data);
}
void JingleThreadWrapper::PostDelayed(
int delay_ms, talk_base::MessageHandler* handler,
uint32 message_id, talk_base::MessageData* data) {
PostTaskInternal(delay_ms, handler, message_id, data);
}
void JingleThreadWrapper::Clear(talk_base::MessageHandler* handler, uint32 id,
talk_base::MessageList* removed) {
base::AutoLock auto_lock(lock_);
for (MessagesQueue::iterator it = messages_.begin();
it != messages_.end();) {
if (it->second.Match(handler, id)) {
if (removed) {
removed->push_back(it->second);
} else {
delete it->second.pdata;
}
MessagesQueue::iterator next = it;
++next;
messages_.erase(it);
it = next;
} else {
++it;
}
}
}
void JingleThreadWrapper::PostTaskInternal(
int delay_ms, talk_base::MessageHandler* handler,
uint32 message_id, talk_base::MessageData* data) {
int task_id;
talk_base::Message message;
message.phandler = handler;
message.message_id = message_id;
message.pdata = data;
{
base::AutoLock auto_lock(lock_);
task_id = ++last_task_id_;
messages_.insert(std::pair<int, talk_base::Message>(task_id, message));
}
if (delay_ms <= 0) {
message_loop_->PostTask(FROM_HERE, NewRunnableMethod(
this, &JingleThreadWrapper::RunTask, task_id));
} else {
message_loop_->PostDelayedTask(
FROM_HERE,
NewRunnableMethod(this, &JingleThreadWrapper::RunTask, task_id),
delay_ms);
}
}
void JingleThreadWrapper::RunTask(int task_id) {
bool have_message = false;
talk_base::Message message;
{
base::AutoLock auto_lock(lock_);
MessagesQueue::iterator it = messages_.find(task_id);
if (it != messages_.end()) {
have_message = true;
message = it->second;
messages_.erase(it);
}
}
if (have_message)
message.phandler->OnMessage(&message);
}
// All methods below are marked as not reached. See comments in the
// header for more details.
void JingleThreadWrapper::Quit() {
NOTREACHED();
}
bool JingleThreadWrapper::IsQuitting() {
NOTREACHED();
return false;
}
void JingleThreadWrapper::Restart() {
NOTREACHED();
}
bool JingleThreadWrapper::Get(talk_base::Message*, int, bool) {
NOTREACHED();
return false;
}
bool JingleThreadWrapper::Peek(talk_base::Message*, int) {
NOTREACHED();
return false;
}
void JingleThreadWrapper::PostAt(uint32, talk_base::MessageHandler*,
uint32, talk_base::MessageData*) {
NOTREACHED();
}
void JingleThreadWrapper::Dispatch(talk_base::Message* msg) {
NOTREACHED();
}
void JingleThreadWrapper::ReceiveSends() {
NOTREACHED();
}
int JingleThreadWrapper::GetDelay() {
NOTREACHED();
return 0;
}
void JingleThreadWrapper::Stop() {
NOTREACHED();
}
void JingleThreadWrapper::Run() {
NOTREACHED();
}
} // namespace jingle_glue
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