forked from Imagelibrary/rtems
7d931f6aa8
PR 1849/tests * Makefile.am, configure.ac, psxtmtests_plan.csv: Add benchmark of sem_post - thread waiting, no preempt. * psxtmsem04/.cvsignore, psxtmsem04/Makefile.am, psxtmsem04/init.c, psxtmsem04/psxtmsem04.doc: New files.
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
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* COPYRIGHT (c) 1989-2011.
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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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* $Id$
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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 <errno.h>
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#include <fcntl.h>
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#include <semaphore.h>
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#include <coverhd.h>
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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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#define MAX_SEMS 2
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sem_t sem1;
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sem_t *n_sem1;
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void *Blocker( void *argument)
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{
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(void) sem_wait(&sem1);
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/* should never return */
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rtems_test_assert( FALSE );
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return NULL;
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}
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void *POSIX_Init(void *argument)
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{
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int status;
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pthread_t threadId;
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long end_time;
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puts( "\n\n*** POSIX TIME TEST SEMAPHORE 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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/*
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* Deliberately create the semaphore after the threads. This way if the
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* threads do run before we intend, they will get an error.
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*/
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status = sem_init( &sem1, 0, 1 );
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rtems_test_assert( status == 0 );
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/*
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* Ensure the semaphore is unavailable so the other threads block.
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* Lock semaphore resource to ensure thread blocks.
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*/
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status = sem_wait(&sem1);
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rtems_test_assert( status == 0 );
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/*
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* Let the other thread start so the thread startup overhead,
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* is accounted for. When we return, we can start the benchmark.
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*/
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sched_yield();
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/* let other thread run */
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benchmark_timer_initialize();
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status = sem_post( &sem1 ); /* semaphore unblocking operation */
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end_time = benchmark_timer_read();
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rtems_test_assert( status == 0 );
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put_time(
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"sem_post - thread waiting, no 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 SEMAPHORE 04 ***" );
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rtems_test_exit( 0 );
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return NULL;
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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_SEMAPHORES MAX_SEMS
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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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