88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* $Id$
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*
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* Author Jeffrey O. Hill
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* johill@lanl.gov
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* 505 665 1831
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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*/
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#include <limits.h>
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#define epicsExportSharedSymbols
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#include "timerPrivate.h"
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timerQueueActiveMgr::~timerQueueActiveMgr ()
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{
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epicsAutoMutex locker ( this->mutex );
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}
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epicsTimerQueueForC & timerQueueActiveMgr::allocate (
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bool okToShare, int threadPriority )
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{
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epicsAutoMutex locker ( this->mutex );
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if ( okToShare ) {
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tsDLIterBD < epicsTimerQueueForC > iter = this->sharedQueueList.firstIter ();
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while ( iter.valid () ) {
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if ( iter->threadPriority () == threadPriority ) {
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assert ( iter->timerQueueActiveMgrPrivate::referenceCount < UINT_MAX );
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iter->timerQueueActiveMgrPrivate::referenceCount++;
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return *iter;
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}
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}
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}
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epicsTimerQueueForC *pQueue = new epicsTimerQueueForC ( okToShare, threadPriority );
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if ( ! pQueue ) {
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throwWithLocation ( timer::noMemory () );
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}
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pQueue->timerQueueActiveMgrPrivate::referenceCount = 1u;
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if ( okToShare ) {
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this->sharedQueueList.add ( *pQueue );
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}
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return *pQueue;
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}
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void timerQueueActiveMgr::release ( epicsTimerQueueForC &queue )
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{
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epicsAutoMutex locker ( this->mutex );
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assert ( queue.timerQueueActiveMgrPrivate::referenceCount > 0u );
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queue.timerQueueActiveMgrPrivate::referenceCount--;
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if ( queue.timerQueueActiveMgrPrivate::referenceCount == 0u ) {
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if ( queue.sharingOK () ) {
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this->sharedQueueList.remove ( queue );
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}
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timerQueueActiveMgrPrivate *pPriv = &queue;
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delete pPriv;
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}
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}
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timerQueueActiveMgrPrivate::timerQueueActiveMgrPrivate () :
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referenceCount ( 0u )
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{
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}
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timerQueueActiveMgrPrivate::~timerQueueActiveMgrPrivate ()
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{
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}
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