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version 1.21, 2002/01/21 21:20:35
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version 1.22, 2002/02/11 01:17:41
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| Uint32 MessageQueue::getNextQueueId() throw(IPCException) | Uint32 MessageQueue::getNextQueueId() throw(IPCException) |
| { | { |
| static Uint32 _nextQueueId = 1; |
static Uint32 _nextQueueId = 2; |
| | |
| // | // |
| // Lock mutex: | // Lock mutex: |
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| // a queue id: | // a queue id: |
| | |
| if (_nextQueueId == 0) | if (_nextQueueId == 0) |
| _nextQueueId = 1; |
_nextQueueId = 2; |
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| Uint32 queueId = _nextQueueId++; | Uint32 queueId = _nextQueueId++; |
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| const char* name, | const char* name, |
| Boolean async, | Boolean async, |
| Uint32 queueId) | Uint32 queueId) |
| : |
: _queueId(queueId), _count(0), _front(0), _back(0), _async(async) |
| _queueId(queueId), _count(0), _front(0), _back(0), _async(async), |
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| _workThread(MessageQueue::workThread, this, false), _workSemaphore(0) |
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| { | { |
| // | // |
| // Copy the name: | // Copy the name: |
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| q_table_mut.unlock(); | q_table_mut.unlock(); |
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| if(_async == true) |
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| _workThread.run(); |
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| PEG_FUNC_EXIT(TRC_DISPATCHER,"MessageQueue::MessageQueue()"); | PEG_FUNC_EXIT(TRC_DISPATCHER,"MessageQueue::MessageQueue()"); |
| } | } |
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| _queueTable.remove(_queueId); | _queueTable.remove(_queueId); |
| q_table_mut.unlock(); | q_table_mut.unlock(); |
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| if(_async == true) |
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| { |
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| _workThread.cancel(); // cancel thread |
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| _workSemaphore.signal(); // wake thread |
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| _workThread.join(); // wait for thread to complete |
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| } |
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| // Free the name: | // Free the name: |
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| delete [] _name; | delete [] _name; |
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| PEG_FUNC_EXIT(TRC_DISPATCHER,"MessageQueue::~MessageQueue()"); | PEG_FUNC_EXIT(TRC_DISPATCHER,"MessageQueue::~MessageQueue()"); |
| } | } |
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| PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL MessageQueue::workThread(void * arg) |
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| { |
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| PEG_FUNC_ENTER(TRC_DISPATCHER,"MessageQueue::workThread()"); |
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| // get thread from argument |
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| Thread * thread = (Thread *)arg; |
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| PEGASUS_ASSERT(thread != 0); |
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| // get message queue from thread |
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| MessageQueue * queue = (MessageQueue *)thread->get_parm(); |
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| PEGASUS_ASSERT(queue != 0); |
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| while(true) |
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| { |
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| if(thread->is_cancelled()) |
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| { |
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| break; |
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| } |
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| // wait for work |
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| queue->_workSemaphore.wait(); |
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| // stop the thread when the message queue has been destroyed. |
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| // ATTN: should check the thread cancel flag that is not yet exposed! |
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| if(MessageQueue::lookup(queue->_queueId) == 0) |
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| { |
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| Tracer::trace(TRC_DISPATCHER, Tracer::LEVEL3, |
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| "MessageQueue::workThread - ", |
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| "Message queue, %i, for thread no longer exists", |
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| queue->_queueId); |
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| break; |
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| } |
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| // ensure the queue has a message before dispatching |
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| if(queue->_count != 0) |
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| { |
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| queue->handleEnqueue(); |
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| } |
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| } |
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| PEG_FUNC_EXIT(TRC_DISPATCHER,"MessageQueue::workThread()"); |
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| thread->exit_self(PEGASUS_THREAD_RETURN(0)); |
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| return(0); |
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| } |
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| void MessageQueue::enqueue(Message* message) throw(IPCException) | void MessageQueue::enqueue(Message* message) throw(IPCException) |
| { | { |
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| } | } |
| message->_owner = this; | message->_owner = this; |
| _count++; | _count++; |
| if( _async == true ) |
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| { |
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| _workSemaphore.signal(); |
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| } |
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| _mut.unlock(); | _mut.unlock(); |
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| if(_async == false ) |
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| handleEnqueue(); | handleEnqueue(); |
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| } | } |
Return to
MessageQueue.cpp
CVS log
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