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/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define TEST_INIT
#include <coverhd.h>
#include <tmacros.h>
#include <timesys.h>
#include "test_support.h"
#include <pthread.h>
#include <sched.h>
#include <rtems/btimer.h>
const char rtems_test_name[] = "PSXTMMUTEX 06";
/* forward declarations to avoid warnings */
void *POSIX_Init(void *argument);
void *Middle(void *argument);
void *Low(void *argument);
pthread_mutex_t MutexId;
void *Low(
void *argument
)
{
int status;
benchmark_timer_t end_time;
status = pthread_mutex_lock( &MutexId );
end_time = benchmark_timer_read();
rtems_test_assert( status == 0 );
put_time(
"pthread_mutex_unlock: unblocking preempt",
end_time,
OPERATION_COUNT,
0,
0
);
TEST_END();
rtems_test_exit( 0 );
return NULL;
}
void *Middle(
void *argument
)
{
int status;
status = pthread_mutex_lock( &MutexId );
rtems_test_assert( status == 0 );
/* thread switch occurs */
status = pthread_mutex_unlock( &MutexId );
rtems_test_assert( status == 0 );
/* thread switch occurs */
return NULL;
}
void *POSIX_Init(
void *argument
)
{
int i;
int status;
pthread_t threadId;
pthread_attr_t attr;
struct sched_param param;
TEST_BEGIN();
/*
* Deliberately create the mutex BEFORE the threads. This way the
* threads should preempt this thread and block as they are created.
*/
status = pthread_mutex_init( &MutexId, NULL );
rtems_test_assert( status == 0 );
/*
* Lock the mutex so the threads will block.
*/
status = pthread_mutex_lock( &MutexId );
rtems_test_assert( status == 0 );
/*
* Now lower our priority
*/
status = pthread_attr_init( &attr );
rtems_test_assert( status == 0 );
status = pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
rtems_test_assert( status == 0 );
status = pthread_attr_setschedpolicy( &attr, SCHED_RR );
rtems_test_assert( status == 0 );
param.sched_priority = 2;
status = pthread_attr_setschedparam( &attr, ¶m );
rtems_test_assert( status == 0 );
/*
* And create rest of threads as more important than we are. They
* will preempt us as they are created and block.
*/
for ( i=0 ; i < OPERATION_COUNT ; i++ ) {
param.sched_priority = 3 + i;
status = pthread_attr_setschedparam( &attr, ¶m );
rtems_test_assert( status == 0 );
status = pthread_create(
&threadId,
&attr,
(i == OPERATION_COUNT - 1) ? Low : Middle,
NULL
);
rtems_test_assert( status == 0 );
}
/*
* Now start the timer which will be stopped in Low
*/
benchmark_timer_initialize();
status = pthread_mutex_unlock( &MutexId );
rtems_test_assert( status == 0 );
/* thread switch occurs */
return NULL;
}
/* configuration information */
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER
#define CONFIGURE_MAXIMUM_POSIX_THREADS OPERATION_COUNT + 2
#define CONFIGURE_POSIX_INIT_THREAD_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
/* end of file */
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