psxtmtests/psxtmbarrier04/init.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  COPYRIGHT (c) 1989-2013.
0005  *  On-Line Applications Research Corporation (OAR).
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions and the following disclaimer.
0012  * 2. Redistributions in binary form must reproduce the above copyright
0013  *    notice, this list of conditions and the following disclaimer in the
0014  *    documentation and/or other materials provided with the distribution.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0017  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0018  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0019  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0020  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0021  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0022  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0023  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0024  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0025  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0026  * POSSIBILITY OF SUCH DAMAGE.
0027  */
0028
0029 #if !defined(OPERATION_COUNT)
0030 #define OPERATION_COUNT 100
0031 #endif
0032
0033 #ifdef HAVE_CONFIG_H
0034 #include "config.h"
0035 #endif
0036
0037 #include <tmacros.h>
0038 #include <timesys.h>
0039 #include "test_support.h"
0040 #include <pthread.h>
0041 #include <sched.h>
0042 #include <rtems/btimer.h>
0043
0044 const char rtems_test_name[] = "PSXTMBARRIER 04";
0045
0046 /* forward declarations to avoid warnings */
0047 void *POSIX_Init(void *argument);
0048 void *Blocker(void *argument);
0049
0050 #define N  2
0051 pthread_barrier_t     barrier;
0052
0053 void *Blocker(
0054   void *argument
0055 )
0056 {
0057   benchmark_timer_t end_time;
0058
0059   /* block on barrier wait, switch back to first thread */
0060   (void) pthread_barrier_wait( &barrier );
0061
0062
0063   /* preempt first thread and stop time */
0064   end_time = benchmark_timer_read();
0065   put_time(
0066     "pthread_barrier_wait: releasing preempt",
0067     end_time,
0068     1,
0069     0,
0070     0
0071   );
0072   TEST_END();
0073   rtems_test_exit( 0 );
0074
0075 }
0076
0077 void *POSIX_Init(
0078   void *argument
0079 )
0080 {
0081   int        status;
0082   pthread_t  threadId;
0083   int policy;
0084   struct sched_param param;
0085
0086   TEST_BEGIN();
0087
0088   status = pthread_create( &threadId, NULL, Blocker, NULL );
0089   rtems_test_assert( status == 0 );
0090   status = pthread_barrier_init( &barrier, NULL, N );
0091   rtems_test_assert( status == 0 );
0092
0093   /* yield to second thread so it can start up and block */
0094   sched_yield();
0095
0096   pthread_getschedparam(threadId, &policy, &param);
0097   param.sched_priority = sched_get_priority_max(policy) - 1;
0098   /* preempt doesn't occur here due to second thread being blocked */
0099   pthread_setschedparam(threadId, policy, &param);
0100
0101   /* as soon as this thread waits on barrier, release occurs, 2nd thread
0102    * preempts this one due to having a higher priority
0103    */
0104   benchmark_timer_initialize();
0105   status = pthread_barrier_wait( &barrier );
0106
0107   /* avoid warning but should not be executed */
0108   return NULL;
0109 }
0110
0111 /* configuration information */
0112
0113 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
0114 #define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER
0115
0116 #define CONFIGURE_MAXIMUM_POSIX_THREADS     2
0117 #define CONFIGURE_POSIX_INIT_THREAD_TABLE
0118
0119 #define CONFIGURE_INIT
0120
0121 #include <rtems/confdefs.h>
0122 /* end of file */