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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#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_SIMPLE_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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