forked from Imagelibrary/rtems
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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* COPYRIGHT (c) 1989-2013.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tmacros.h>
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#include <timesys.h>
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#include "test_support.h"
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#include <pthread.h>
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#include <sched.h>
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#include <rtems/timerdrv.h>
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/* forward declarations to avoid warnings */
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void *POSIX_Init(void *argument);
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void *Blocker(void *argument);
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#define N 2
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pthread_barrier_t barrier;
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void *Blocker(
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void *argument
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)
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{
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benchmark_timer_t end_time;
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/* block on barrier wait, switch back to first thread */
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(void) pthread_barrier_wait( &barrier );
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/* preempt first thread and stop time */
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end_time = benchmark_timer_read();
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put_time(
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"pthread_barrier_wait – releasing, preempt",
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end_time,
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1,
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0,
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0
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);
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puts( "*** END OF POSIX TIME TEST PSXTMBARRIER 04 ***" );
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rtems_test_exit( 0 );
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}
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void *POSIX_Init(
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void *argument
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)
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{
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int status;
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pthread_t threadId;
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int policy;
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struct sched_param param;
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puts( "\n\n*** POSIX TIME TEST PSXTMBARRIER 04 ***" );
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status = pthread_create( &threadId, NULL, Blocker, NULL );
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rtems_test_assert( status == 0 );
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status = pthread_barrier_init( &barrier, NULL, N );
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rtems_test_assert( status == 0 );
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/* yield to second thread so it can start up and block */
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sched_yield();
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pthread_getschedparam(threadId, &policy, ¶m);
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param.sched_priority = sched_get_priority_max(policy) - 1;
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/* preempt doesn't occur here due to second thread being blocked */
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pthread_setschedparam(threadId, policy, ¶m);
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/* as soon as this thread waits on barrier, release occurs, 2nd thread
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* preempts this one due to having a higher priority
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*/
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benchmark_timer_initialize();
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status = pthread_barrier_wait( &barrier );
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}
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/* configuration information */
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER
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#define CONFIGURE_MAXIMUM_POSIX_THREADS 2
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#define CONFIGURE_MAXIMUM_POSIX_BARRIERS 1
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#define CONFIGURE_POSIX_INIT_THREAD_TABLE
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#define CONFIGURE_INIT
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#include <rtems/confdefs.h>
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/* end of file */
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