mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 09:05:45 +00:00
119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* vim: sw=4 ts=4 et :
|
|
*/
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Plugin App.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Chris Jones <jones.chris.g@gmail.com>
|
|
* Portions created by the Initial Developer are Copyright (C) 2009
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef ipc_glue_SyncChannel_h
|
|
#define ipc_glue_SyncChannel_h 1
|
|
|
|
#include "mozilla/ipc/AsyncChannel.h"
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class SyncChannel : public AsyncChannel
|
|
{
|
|
protected:
|
|
typedef uint16 MessageId;
|
|
|
|
public:
|
|
class /*NS_INTERFACE_CLASS*/ SyncListener :
|
|
public AsyncChannel::AsyncListener
|
|
{
|
|
public:
|
|
virtual ~SyncListener() { }
|
|
|
|
virtual void OnChannelClose() = 0;
|
|
virtual void OnChannelError() = 0;
|
|
virtual Result OnMessageReceived(const Message& aMessage) = 0;
|
|
virtual Result OnMessageReceived(const Message& aMessage,
|
|
Message*& aReply) = 0;
|
|
};
|
|
|
|
SyncChannel(SyncListener* aListener);
|
|
virtual ~SyncChannel();
|
|
|
|
bool Send(Message* msg) {
|
|
return AsyncChannel::Send(msg);
|
|
}
|
|
|
|
// Synchronously send |msg| (i.e., wait for |reply|)
|
|
bool Send(Message* msg, Message* reply);
|
|
|
|
// Override the AsyncChannel handler so we can dispatch sync messages
|
|
NS_OVERRIDE virtual void OnMessageReceived(const Message& msg);
|
|
NS_OVERRIDE virtual void OnChannelError();
|
|
|
|
static bool IsPumpingMessages() {
|
|
return sIsPumpingMessages;
|
|
}
|
|
static void SetIsPumpingMessages(bool aIsPumping) {
|
|
sIsPumpingMessages = aIsPumping;
|
|
}
|
|
|
|
protected:
|
|
// Executed on the worker thread
|
|
bool ProcessingSyncMessage() {
|
|
return mProcessingSyncMessage;
|
|
}
|
|
|
|
void OnDispatchMessage(const Message& aMsg);
|
|
void WaitForNotify();
|
|
|
|
// Executed on the IO thread.
|
|
void OnSendReply(Message* msg);
|
|
void NotifyWorkerThread();
|
|
|
|
// On both
|
|
bool AwaitingSyncReply() {
|
|
mMutex.AssertCurrentThreadOwns();
|
|
return mPendingReply != 0;
|
|
}
|
|
|
|
MessageId mPendingReply;
|
|
bool mProcessingSyncMessage;
|
|
Message mRecvd;
|
|
|
|
static bool sIsPumpingMessages;
|
|
};
|
|
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|
|
#endif // ifndef ipc_glue_SyncChannel_h
|