vthread-vxworks.cxx
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上传日期:2013-07-25
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- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const vthread_vxworks_cxx_Version =
- "$Id: vthread-vxworks.cxx,v 1.2 2001/06/29 03:41:33 bko Exp $";
- #ifdef __vxworks
- #include <cassert>
- #include "VThread.hxx"
- #include "cpLog.h"
- /*********************************************************************
-
- VThread for VxWorks
-
- *********************************************************************/
- VThread::VThread( void )
- : myId(VTHREAD_ID_INVALID)
- {
- }
- VThread::~VThread( void )
- {
- if ( taskIdVerify( myId ) == OK )
- {
- // warn user but don't kill thread
- cpLog( LOG_DEBUG, "active VThread:%d going out of scope", myId );
- }
- }
- int
- VThread::spawn( void *( *startFunc )( void* ),
- void *startArgs = 0,
- unsigned long flags = 0,
- unsigned long priority = VTHREAD_PRIORITY_DEFAULT,
- int stackSize = VTHREAD_STACK_SIZE_DEFAULT
- )
- {
- if ( myId != VTHREAD_ID_INVALID )
- {
- // make sure VThread doesn't already have an active thread
- // associated with it
- if ( taskIdVerify( myId ) == OK )
- {
- // return without spawning another thread
- cpLog( LOG_ERR, "VThread:%d is already active", myId );
- return VTHREAD_ID_INVALID;
- }
- }
- int vxworksPriority = VTHREAD_PRIORITY_VXWORKS_DEFAULT;
- int vxworksOptions = 0;
- assert( flags == 0 ); // handling tbd
- if ( priority != VTHREAD_PRIORITY_DEFAULT )
- {
- vxworksPriority = priority;
- }
- myId = taskSpawn( 0, vxworksPriority, vxworksOptions,
- stackSize, (FUNCPTR) startFunc,
- (int) startArgs, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
- if ( myId <= 0 )
- {
- throw VExceptionMemory(
- "cannot allocate VThread",
- __FILE__,
- __LINE__,
- myId );
- }
- return 0;
- }
- int
- VThread::join( void **status = 0 )
- {
- while ( taskIdVerify( myId ) == OK )
- {
- sleep( 1 );
- }
- myId = VTHREAD_ID_INVALID;
- return 0;
- }
- int
- VThread::getPriority( void )
- {
- int thePriority = VTHREAD_PRIORITY_DEFAULT;
- if ( taskIdVerify( myId ) == 0 )
- {
- assert( taskPriorityGet( myId, &thePriority ) == OK );
- }
- else
- {
- cpLog( LOG_ERR, "VThread:%d is not active", myId );
- }
- return thePriority;
- }
- int
- VThread::setPriority( int priority )
- {
- return ( taskPrioritySet( myId, priority ) );
- }
- const vthread_t*
- VThread::getId( void )
- {
- return &myId;
- }
- const vthread_attr_t*
- VThread::getAttributes( void )
- {
- return &myAttributes;
- }
- void
- VThread::exit( void )
- {
- taskDelete( myId );
- myId = VTHREAD_ID_INVALID;
- }
- int
- sleep( int seconds )
- {
- return (int) (taskDelay( seconds * CLOCKS_PER_SEC ) );
- }
- int
- usleep( int useconds )
- {
- return (int) (taskDelay( ( useconds * CLOCKS_PER_SEC ) / 1000000 ) );
- }
- void vusleep(unsigned long usec)
- {
- return ( usleep(usec) );
- }
- const vthread_t
- VThread::selfId( void )
- {
- return taskIdSelf();
- }
- #endif
- //__vxworks