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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.
*/
#define TEST_INIT
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <coverhd.h>
#include <errno.h>
#include <timesys.h>
#include <tmacros.h>
#include <sched.h>
#include <pthread.h>
#include <rtems/btimer.h>
#include "test_support.h"
const char rtems_test_name[] = "PSXTMRWLOCK 04";
/* forward declarations to avoid warnings */
void *POSIX_Init(void *argument);
void *Middle(void *argument);
void *Low(void *argument);
pthread_rwlock_t rwlock;
void *Low(
void *argument
)
{
benchmark_timer_t end_time;
/*
* Now we have finished the thread startup overhead,
* so let other threads run. When we return, we can
* finish the benchmark.
*/
sched_yield();
/* let other threads run */
end_time = benchmark_timer_read();
put_time(
"pthread_rwlock_wrlock: not available blocks",
end_time,
OPERATION_COUNT,
0,
0
);
TEST_END();
rtems_test_exit( 0 );
return NULL;
}
void *Middle(
void *argument
)
{
int status;
/*
* Now we have finished the thread startup overhead,
* so let other threads run. When we return, we can
* finish the benchmark.
*/
sched_yield();
/* let other threads run */
/* this write lock operation will be blocked
* cause another write operation has the lock */
status = pthread_rwlock_wrlock(&rwlock);
rtems_test_assert( status == 0 );
return NULL;
}
void *POSIX_Init(
void *argument
)
{
int i;
int status;
pthread_t threadId;
pthread_rwlockattr_t attr;
TEST_BEGIN();
for ( i=0 ; i < OPERATION_COUNT - 1 ; i++ ) {
status = pthread_create( &threadId, NULL, Middle, NULL );
rtems_test_assert( !status );
}
status = pthread_create( &threadId, NULL, Low, NULL );
rtems_test_assert( !status );
/*
* Deliberately create the rwlock after the threads. This way if the
* threads do run before we intend, they will get an error.
*/
status = pthread_rwlockattr_init( &attr );
rtems_test_assert( status == 0 );
status = pthread_rwlock_init( &rwlock, &attr );
rtems_test_assert( status == 0 );
/*
* Let the other threads start so the thread startup overhead,
* is accounted for. When we return, we can start the benchmark.
*/
sched_yield();
/* let other threads run */
/* start the timer and switch through all the other tasks */
benchmark_timer_initialize();
/* write lock operation */
status = pthread_rwlock_wrlock(&rwlock);
rtems_test_assert( status == 0 );
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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