74 lines
1.4 KiB
C++
74 lines
1.4 KiB
C++
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <simgear/compiler.h>
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#include <sys/time.h>
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#include "SGThread.hxx"
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void*
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start_handler( void* arg )
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{
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SGThread* thr = static_cast<SGThread*>(arg);
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thr->run();
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return 0;
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}
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void
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SGThread::set_cancel( cancel_t mode )
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{
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switch (mode)
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{
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case CANCEL_DISABLE:
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pthread_setcancelstate( PTHREAD_CANCEL_DISABLE, 0 );
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break;
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case CANCEL_DEFERRED:
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pthread_setcanceltype( PTHREAD_CANCEL_DEFERRED, 0 );
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pthread_setcancelstate( PTHREAD_CANCEL_ENABLE, 0 );
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break;
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case CANCEL_IMMEDIATE:
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pthread_setcanceltype( PTHREAD_CANCEL_ASYNCHRONOUS, 0 );
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pthread_setcancelstate( PTHREAD_CANCEL_ENABLE, 0 );
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break;
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default:
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break;
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}
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}
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bool
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SGMutex::trylock()
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{
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int status = pthread_mutex_lock( &mutex );
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if (status == EBUSY)
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{
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return false;
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}
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assert( status == 0 );
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return true;
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}
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bool
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SGCondition::wait( SGMutex& mutex, unsigned long ms )
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{
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struct timeval now;
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::gettimeofday( &now, 0 );
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// Wait time is now + ms milliseconds
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unsigned int sec = ms / 1000;
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unsigned int nsec = (ms % 1000) * 1000;
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struct timespec abstime;
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abstime.tv_sec = now.tv_sec + sec;
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abstime.tv_nsec = now.tv_usec*1000 + nsec;
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int status = pthread_cond_timedwait( &cond, &mutex.mutex, &abstime );
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if (status == ETIMEDOUT)
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{
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return false;
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}
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assert( status == 0 );
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return true;
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}
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