forked from Imagelibrary/rtems
a87d1b1612
* Makefile.am, configure.ac, psxtmtests_plan.csv: Add benchmark of pthread_mutex_unlock where it is unblocking threads with preemption. * psxtmmutex06/.cvsignore, psxtmmutex06/Makefile.am, psxtmmutex06/init.c, psxtmmutex06/psxtmmutex06.doc: New files.
155 lines
3.2 KiB
C
155 lines
3.2 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 <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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pthread_mutex_t MutexId;
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void *Low(
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void *argument
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)
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{
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int status;
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uint32_t end_time;
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status = pthread_mutex_lock( &MutexId );
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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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"pthread_mutex_unlock (unblocking, prempt)",
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end_time,
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OPERATION_COUNT,
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0,
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0
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);
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puts( "*** END OF POSIX TIME TEST MUTEX 07 ***" );
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rtems_test_exit( 0 );
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return NULL;
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}
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void *Middle(
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void *argument
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)
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{
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int status;
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status = pthread_mutex_lock( &MutexId );
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rtems_test_assert( status == 0 );
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/* thread switch occurs */
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status = pthread_mutex_unlock( &MutexId );
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rtems_test_assert( status == 0 );
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/* thread switch occurs */
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return NULL;
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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 i;
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int status;
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pthread_t threadId;
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pthread_attr_t attr;
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struct sched_param param;
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puts( "\n\n*** POSIX TIME TEST MUTEX 02 ***" );
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/*
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* Deliberately create the mutex BEFORE the threads. This way the
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* threads should preempt this thread and block as they are created.
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*/
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status = pthread_mutex_init( &MutexId, NULL );
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rtems_test_assert( status == 0 );
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/*
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* Lock the mutex so the threads will block.
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*/
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status = pthread_mutex_lock( &MutexId );
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rtems_test_assert( status == 0 );
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/*
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* Now lower our priority
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*/
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status = pthread_attr_init( &attr );
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rtems_test_assert( status == 0 );
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status = pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
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rtems_test_assert( status == 0 );
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status = pthread_attr_setschedpolicy( &attr, SCHED_RR );
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rtems_test_assert( status == 0 );
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param.sched_priority = 2;
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status = pthread_attr_setschedparam( &attr, ¶m );
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rtems_test_assert( status == 0 );
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/*
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* And create rest of threads as more important than we are. They
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* will preempt us as they are created and block.
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*/
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for ( i=0 ; i < OPERATION_COUNT ; i++ ) {
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param.sched_priority = 3 + i;
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status = pthread_attr_setschedparam( &attr, ¶m );
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rtems_test_assert( status == 0 );
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status = pthread_create(
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&threadId,
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&attr,
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(i == OPERATION_COUNT - 1) ? Low : Middle,
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NULL
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);
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rtems_test_assert( status == 0 );
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}
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/*
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* Now start the timer which will be stopped in Low
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*/
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benchmark_timer_initialize();
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status = pthread_mutex_unlock( &MutexId );
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rtems_test_assert( status == 0 );
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/* thread switch occurs */
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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 OPERATION_COUNT + 2
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#define CONFIGURE_MAXIMUM_POSIX_MUTEXES 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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