solaristhreads.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- //This is used to turn off threads in libc5 builds.
- #ifdef _UNIX_THREADS_SUPPORTED
- #include <errno.h>
- #include "hxtypes.h"
- #include "hxresult.h"
- #include <synch.h>
- #include <thread.h>
- #include "solaristhreads.h"
- //=======================================================================
- //
- // HXSolarisThread
- // ----------------------
- //
- //=======================================================================
- HXSolarisThread::HXSolarisThread()
- : HXUnixThread()
- {}
- HXSolarisThread::~HXSolarisThread()
- {}
- HX_RESULT HXSolarisThread::_thread_create( ULONG32& ulThreadID, void*(pfExecFunc(void*)), void* pArg )
- {
- HX_RESULT retVal = HXR_OK;
- thread_t threadID=0;
- int nCode = thr_create(NULL, 0, pfExecFunc, pArg, 0, &threadID);
- ulThreadID = threadID;
- if (nCode!=0)
- {
- ulThreadID = 0;
- retVal = HXR_FAIL;
- }
- return retVal;
- }
- ULONG32 HXSolarisThread::_thread_self()
- {
- return thr_self();
- }
- void HXSolarisThread::_thread_exit(UINT32 unExitCode)
- {
- thr_exit( (void*)unExitCode );
- }
- void HXSolarisThread::_thread_cancel(ULONG32 ulThreadID)
- {
- HX_ASSERT( "_thread_cancel not supported on Solaris threads" == NULL );
- }
- ULONG32 HXSolarisThread::_thread_join(ULONG32 ulThreadID)
- {
- void* pvRetVal = NULL;
- thr_join( ulThreadID, NULL, &pvRetVal );
- return (ULONG32)(PTR_INT)pvRetVal;
- }
- //=======================================================================
- //
- // HXSolarisMutex
- // ------------------
- //
- //=======================================================================
- HXSolarisMutex::HXSolarisMutex()
- : HXUnixMutex(),
- m_ulOwnerThread(0),
- m_ulLockCount(0)
- {
- mutex_init( &m_mutex, USYNC_THREAD, NULL );
- mutex_init( &m_mtxLockLock, USYNC_THREAD, NULL );
- }
-
- HXSolarisMutex::~HXSolarisMutex()
- {
- mutex_destroy( &m_mutex );
- m_ulLockCount = 0;
- m_ulOwnerThread = 0;
- }
-
- HX_RESULT HXSolarisMutex::_Lock()
- {
- //We simulate recursive mutexes.
- //No one owns this mutex.
- if( m_ulOwnerThread != thr_self() )
- {
- //We are going to block for sure.
- mutex_lock(&m_mutex);
- //Take ownership.
- mutex_lock(&m_mtxLockLock);
- m_ulOwnerThread = thr_self();
- m_ulLockCount = 1;
- mutex_unlock(&m_mtxLockLock);
- }
- else
- {
- //We alread have it locked. Just increment the lock count
- mutex_lock(&m_mtxLockLock);
- m_ulLockCount++;
- mutex_unlock(&m_mtxLockLock);
- }
- return HXR_OK;
- }
-
- HX_RESULT HXSolarisMutex::_Unlock()
- {
- //Sanity checks.
- HX_ASSERT( m_ulLockCount != 0 && m_ulOwnerThread == thr_self() );
- if( m_ulLockCount == 0 || m_ulOwnerThread!=thr_self() )
- return HXR_FAIL;
- mutex_lock(&m_mtxLockLock);
- m_ulLockCount--;
- if( m_ulLockCount == 0 )
- {
- //We are really done with it. Do the real unlock now.
- m_ulOwnerThread = 0;
- mutex_unlock(&m_mutex);
- }
- mutex_unlock(&m_mtxLockLock);
- return HXR_OK;
- }
-
- HX_RESULT HXSolarisMutex::_TryLock()
- {
- // HX_ASSERT( "Trylock isn't compatible with our home-grown recursive mutexes yet!" ==NULL );
- //Warning: this is just a blind wrapper around trylock. It doesn't take into accout
- //our simulation or recursive mutexes.
- return (mutex_trylock(&m_mutex)==0) ? HXR_OK : HXR_FAIL;
- }
- //=======================================================================
- //
- // HXSolarisSemaphore
- // ------------------
- //
- //=======================================================================
- HXSolarisSemaphore::HXSolarisSemaphore(UINT32 unInitialCount)
- : HXUnixSemaphore( unInitialCount )
- {
- //Init the sem to non-shared and count passed in.
- if( sema_init( &m_semaphore, m_unInitialCount, USYNC_THREAD, NULL ) < 0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "Can't init semaphore: %d %sn", errno, strerror(errno) );
- #endif
- }
- }
- HXSolarisSemaphore::~HXSolarisSemaphore()
- {
- sema_destroy( &m_semaphore );
- }
- HX_RESULT HXSolarisSemaphore::_Post()
- {
- HX_RESULT retVal = HXR_OK;
- //Init the sem to non-shared and count passed in.
- if( sema_post(&m_semaphore) < 0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "Can't post to semaphore: %d %sn", errno, strerror(errno) );
- #endif
- retVal = HXR_FAIL;
- }
- return retVal;
- }
- HX_RESULT HXSolarisSemaphore::_Wait()
- {
- //sem_wait always returns zero.
- sema_wait( &m_semaphore );
- return HXR_OK;
- }
- HX_RESULT HXSolarisSemaphore::_TryWait()
- {
- HX_RESULT retVal = HXR_OK;
- int nResult = 0;
-
- nResult = sema_trywait( &m_semaphore );
- if( nResult != 0 )
- {
- retVal = HXR_WOULD_BLOCK;
- }
- return retVal;
- }
- HX_RESULT HXSolarisSemaphore::_GetValue( int* pnCount)
- {
- //sem_getvalue always returns zero.
- HX_ASSERT( "_GetValue is not supported by Solaris threads"==NULL );
-
- return HXR_OK;
- }
- HXSolarisCondition::HXSolarisCondition(HXUnixMutex*& pMutex)
- {
- HX_ASSERT( pMutex == NULL );
- //Create the mutex we need to associate with this cond.
-
- m_pMutex = new HXSolarisMutex();
- pMutex = (HXUnixMutex*)m_pMutex;
- //Init our cond var.
- cond_init( &m_cond, NULL, NULL );
- }
- HXSolarisCondition::~HXSolarisCondition()
- {
- cond_destroy(&m_cond);
- HX_DELETE( m_pMutex );
- }
- HX_RESULT HXSolarisCondition::_Signal()
- {
- cond_signal(&m_cond);
- return HXR_OK;
- }
- HX_RESULT HXSolarisCondition::_Broadcast()
- {
- cond_broadcast(&m_cond);
- return HXR_OK;
- }
- HX_RESULT HXSolarisCondition::_Wait()
- {
- HX_ASSERT( m_pMutex );
- //m_pMuex MUST BE LOCKED ALL READY!
- cond_wait(&m_cond, m_pMutex->_GetSolarisMutex());
- return HXR_OK;
- }
- HX_RESULT HXSolarisCondition::_TimedWait(UINT32 unTimeOut)
- {
- //m_pMuex MUST BE LOCKED ALL READY!
- HX_RESULT ret = HXR_OK;
- struct timeval now;
- timestruc_t timeout;
- int retcode;
- gettimeofday(&now, NULL);
- long int waitSeconds = unTimeOut/1000;
- long int nanoSeconds = (unTimeOut-(waitSeconds*1000))*1000000;
- timeout.tv_sec = now.tv_sec+waitSeconds;
- timeout.tv_nsec = now.tv_usec*1000+nanoSeconds;
- if( timeout.tv_nsec >= 1000000000 )
- {
- timeout.tv_nsec -= 1000000000;
- timeout.tv_sec += 1;
- }
- retcode = cond_timedwait(&m_cond, m_pMutex->_GetSolarisMutex(), &timeout);
-
- if(retcode==-1)
- {
- ret = HXR_FAIL;
- //We really could use a HXR_TIMEDOUT.
- if( errno == ETIMEDOUT )
- ret = HXR_WOULD_BLOCK;
- }
- return ret;
- }
- #endif //_UNIX_THREADS_SUPPORTED