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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.
#ifndef JINGLE_GLUE_THREAD_WRAPPER_H_
#define JINGLE_GLUE_THREAD_WRAPPER_H_
#include <map>
#include "base/message_loop.h"
#include "base/synchronization/lock.h"
#include "third_party/libjingle/source/talk/base/thread.h"
class MessageLoop;
namespace jingle_glue {
// JingleThreadWrapper wraps Chromium threads using talk_base::Thread
// interface. The object must be created on a thread it belongs
// to. Each JingleThreadWrapper deletes itself when MessageLoop is
// destroyed. Currently only the bare minimum that is used by P2P
// part of libjingle is implemented.
class JingleThreadWrapper
: public MessageLoop::DestructionObserver,
public talk_base::Thread {
public:
// Create JingleThreadWrapper for the current thread if it hasn't
// been created yet.
static void EnsureForCurrentThread();
JingleThreadWrapper(MessageLoop* message_loop);
// MessageLoop::DestructionObserver implementation.
virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
// talk_base::MessageQueue overrides.
virtual void Post(talk_base::MessageHandler *phandler, uint32 id = 0,
talk_base::MessageData *pdata = NULL,
bool time_sensitive = false) OVERRIDE;
virtual void PostDelayed(
int delay_ms, talk_base::MessageHandler* handler, uint32 id = 0,
talk_base::MessageData* data = NULL) OVERRIDE;
virtual void Clear(talk_base::MessageHandler* handler,
uint32 id = talk_base::MQID_ANY,
talk_base::MessageList* removed = NULL) OVERRIDE;
// Following methods are not supported.They are overriden just to
// ensure that they are not called (each of them contain NOTREACHED
// in the body). Some of this methods can be implemented if it
// becomes neccessary to use libjingle code that calls them.
virtual void Quit() OVERRIDE;
virtual bool IsQuitting() OVERRIDE;
virtual void Restart() OVERRIDE;
virtual bool Get(talk_base::Message* msg, int delay_ms = talk_base::kForever,
bool process_io = true) OVERRIDE;
virtual bool Peek(talk_base::Message* msg, int delay_ms = 0) OVERRIDE;
virtual void PostAt(
uint32 timestamp, talk_base::MessageHandler* handler,
uint32 id = 0, talk_base::MessageData* data = NULL) OVERRIDE;
virtual void Dispatch(talk_base::Message* msg) OVERRIDE;
virtual void ReceiveSends() OVERRIDE;
virtual int GetDelay() OVERRIDE;
// talk_base::Thread overrides.
virtual void Stop() OVERRIDE;
virtual void Run() OVERRIDE;
private:
typedef std::map<int, talk_base::Message> MessagesQueue;
virtual ~JingleThreadWrapper();
void PostTaskInternal(
int delay_ms, talk_base::MessageHandler* handler,
uint32 message_id, talk_base::MessageData* data);
void RunTask(int task_id);
// Chromium thread used to execute messages posted on this thread.
MessageLoop* message_loop_;
// |lock_| must be locked when accessing |messages_|.
base::Lock lock_;
int last_task_id_;
MessagesQueue messages_;
};
}
// Safe to disable refcounting because JingleThreadWrapper deletes
// itself with the thread.
DISABLE_RUNNABLE_METHOD_REFCOUNT(jingle_glue::JingleThreadWrapper);
#endif // JINGLE_GLUE_THREAD_WRAPPER_H_
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