llpluginmessagepipe.h
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- /**
- * @file llpluginmessagepipe.h
- * @brief Classes that implement connections from the plugin system to pipes/pumps.
- *
- * @cond
- * $LicenseInfo:firstyear=2008&license=viewergpl$
- *
- * Copyright (c) 2008-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- * @endcond
- */
- #ifndef LL_LLPLUGINMESSAGEPIPE_H
- #define LL_LLPLUGINMESSAGEPIPE_H
- #include "lliosocket.h"
- class LLPluginMessagePipe;
- // Inherit from this to be able to receive messages from the LLPluginMessagePipe
- class LLPluginMessagePipeOwner
- {
- LOG_CLASS(LLPluginMessagePipeOwner);
- public:
- LLPluginMessagePipeOwner();
- virtual ~LLPluginMessagePipeOwner();
- // called with incoming messages
- virtual void receiveMessageRaw(const std::string &message) = 0;
- // called when the socket has an error
- virtual apr_status_t socketError(apr_status_t error);
- // called from LLPluginMessagePipe to manage the connection with LLPluginMessagePipeOwner -- do not use!
- virtual void setMessagePipe(LLPluginMessagePipe *message_pipe) ;
- protected:
- // returns false if writeMessageRaw() would drop the message
- bool canSendMessage(void);
- // call this to send a message over the pipe
- bool writeMessageRaw(const std::string &message);
- // call this to close the pipe
- void killMessagePipe(void);
-
- LLPluginMessagePipe *mMessagePipe;
- apr_status_t mSocketError;
- };
- class LLPluginMessagePipe
- {
- LOG_CLASS(LLPluginMessagePipe);
- public:
- LLPluginMessagePipe(LLPluginMessagePipeOwner *owner, LLSocket::ptr_t socket);
- virtual ~LLPluginMessagePipe();
-
- bool addMessage(const std::string &message);
- void clearOwner(void);
-
- bool pump(F64 timeout = 0.0f);
-
- protected:
- void processInput(void);
- // used internally by pump()
- void setSocketTimeout(apr_interval_time_t timeout_usec);
-
- std::string mInput;
- std::string mOutput;
- LLPluginMessagePipeOwner *mOwner;
- LLSocket::ptr_t mSocket;
- };
- #endif // LL_LLPLUGINMESSAGE_H