message_queue.hpp
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- /*
- * ===========================================================================
- * PRODUCTION $Log: message_queue.hpp,v $
- * PRODUCTION Revision 1000.4 2004/04/12 18:12:33 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [CATCHUP_003] Dev-tree R1.11
- * PRODUCTION
- * ===========================================================================
- */
- #ifndef GUI_GBENCH___MESSAGE_QUEUE__HPP
- #define GUI_GBENCH___MESSAGE_QUEUE__HPP
- /* $Id: message_queue.hpp,v 1000.4 2004/04/12 18:12:33 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Authors: Mati Shomrat
- *
- * File Description:
- * CMessageQueue - GBench message queue
- */
- #include <corelib/ncbistd.hpp>
- #include <util/thread_pool.hpp>
- #include <gui/plugin/PluginMessage.hpp>
- BEGIN_NCBI_SCOPE
- class CPluginTask;
- /*
- * CPluginMessageQueue provides the public (static) interface for
- * the GenomeWorkbench message queue.
- */
- class NCBI_XGBPLUGIN_EXPORT CPluginMessageQueue
- {
- public:
- //~CPluginMessageQueue();
- // Process a single message off of the queue.
- // Blocks for no longer that the specified timeout.
- static void ProcessMessage(size_t timeout_sec = kMax_UInt,
- size_t timeout_nsec = kMax_UInt) THROWS_NONE;
- // process an indicated message. This will perform the tasks immediately,
- // and do all history logging
- static void ProcessMessage(objects::CPluginMessage& msg);
- // Add a message to the queue.
- // returns 'true' if successfully added, 'false' otherwise.
- static bool Add(objects::CPluginMessage& msg) THROWS_NONE;
- // Get a message.
- // Blocks for no longer that the specified timeout.
- // Will return an empty CConstRef if no message was retrieved.
- static objects::CPluginMessage*
- Get(size_t timeout_sec = kMax_UInt,
- size_t timeout_nsec = kMax_UInt) THROWS_NONE;
-
- // The number of messages currently in the queue.
- static SIZE_TYPE Size(void) THROWS_NONE;
- // Storage allocated for the queue
- static SIZE_TYPE Capacity(void) THROWS_NONE;
- // query whether the queue is full or empty
- static bool IsFull(void) THROWS_NONE;
- static bool IsEmpty(void) THROWS_NONE;
- // clear the message queue
- static void Clear(void) THROWS_NONE;
- private:
- // types
- typedef CRef<objects::CPluginMessage> TMessage;
- typedef CBlockingQueue<TMessage> TMessageQueue;
- typedef list<CRef<CPluginTask> > TTasks;
- // the one and only message queue
- static TMessageQueue sm_Queue;
- // a parallel task queue to hold messages in progress
- static TTasks sm_TaskList;
- // drop a message
- static void x_DropMessage(const objects::CPluginMessage& msg);
- };
- END_NCBI_SCOPE
- #endif // GUI_GBENCH___MESSAGE_QUEUE__HPP
- /*
- * ===========================================================================
- * $Log: message_queue.hpp,v $
- * Revision 1000.4 2004/04/12 18:12:33 gouriano
- * PRODUCTION: UPGRADED [CATCHUP_003] Dev-tree R1.11
- *
- * Revision 1.11 2004/04/07 12:33:58 dicuccio
- * Dropped x_ProcessReply() - not used anymore
- *
- * Revision 1.10 2003/12/31 20:31:24 dicuccio
- * Deleted dead code
- *
- * Revision 1.9 2003/12/22 19:12:40 dicuccio
- * Removed internal singleton - cleans up the calling API significantly
- *
- * Revision 1.8 2003/11/18 17:35:53 dicuccio
- * Removed unnecessary static const member variable. Added API to separate reply
- * processing from message handling
- *
- * Revision 1.7 2003/11/14 17:43:05 dicuccio
- * Added Clear()
- *
- * Revision 1.6 2003/11/04 17:11:15 dicuccio
- * Merged dispatcher/message queue. Added function to force processing of a
- * single message out of the queue
- *
- * Revision 1.5 2003/08/22 15:54:48 dicuccio
- * General clean-up: Removed unneeded export specifiers from templates; removed
- * 'USING_SCOPE(objects)'
- *
- * Revision 1.4 2003/08/05 16:58:39 dicuccio
- * Changed calling conventions for plugin message queue - pass by reference, not
- * CConstRef<>
- *
- * Revision 1.3 2003/07/31 16:41:49 dicuccio
- * Changed class name to be application-agnostic. Moved instance creation into
- * .cpp file. Changed mutex to use correct static initialization
- *
- * Revision 1.2 2003/07/15 15:10:28 ucko
- * Make the guard for sm_Instance a static class member, since Darwin's
- * shared-library linker doesn't like inline functions with static locals.
- *
- * Revision 1.1 2003/07/14 10:52:14 shomrat
- * Initial Revision
- *
- * ===========================================================================
- */