rtems/testsuites/psxtmtests/psxtmrwlock08/init.c

/* SPDX-License-Identifier: BSD-2-Clause */

/*
 * COPYRIGHT (c) 2025 Mazen Adel Elmessady.
 *
 * 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 "test_support.h"
#include <errno.h>
#include <pthread.h>
#include <rtems/btimer.h>
#include <sched.h>
#include <timesys.h>
#include <tmacros.h>

const char rtems_test_name[] = "PSXTMRWLOCK 08";

/* forward declarations to avoid warnings */
void *POSIX_Init( void *argument );
void *Middle( void *argument );
void *Low( void *argument );

pthread_rwlock_t rwlock;
struct timespec  abstime;

void *Low( void *argument )
{
  (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_clockrdlock: not available blocks",
    end_time,
    OPERATION_COUNT,
    0,
    0
  );

  TEST_END();

  rtems_test_exit( 0 );
  return NULL;
}

void *Middle( void *argument )
{
  (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 clock read lock operation will be blocked
   * cause a write operation has the lock */
  status = pthread_rwlock_clockrdlock( &rwlock, CLOCK_MONOTONIC, &abstime );
  rtems_test_assert( status == 0 );
  return NULL;
}

void *POSIX_Init( void *argument )
{
  (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 );

  /*
   *  Timeout for 5 seconds from now.
   */
  status = clock_gettime( CLOCK_MONOTONIC, &abstime );
  rtems_test_assert( !status );
  abstime.tv_sec += 5;

  /*
   * 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, this could be any write lock
   */
  status = pthread_rwlock_clockwrlock( &rwlock, CLOCK_MONOTONIC, 0 );
  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 */