psxtmtests/psxtmmutex06/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[] = "PSXTMMUTEX 06";
0045
0046 /* forward declarations to avoid warnings */
0047 void *POSIX_Init(void *argument);
0048 void *Middle(void *argument);
0049 void *Low(void *argument);
0050
0051 pthread_mutex_t MutexId;
0052
0053 void *Low(
0054   void *argument
0055 )
0056 {
0057   int      status;
0058   benchmark_timer_t end_time;
0059
0060     status = pthread_mutex_lock( &MutexId );
0061   end_time = benchmark_timer_read();
0062
0063   rtems_test_assert( status == 0 );
0064
0065   put_time(
0066     "pthread_mutex_unlock: unblocking preempt",
0067     end_time,
0068     OPERATION_COUNT,
0069     0,
0070     0
0071   );
0072
0073   TEST_END();
0074   rtems_test_exit( 0 );
0075   return NULL;
0076 }
0077
0078 void *Middle(
0079   void *argument
0080 )
0081 {
0082   int status;
0083
0084   status = pthread_mutex_lock( &MutexId );
0085   rtems_test_assert( status == 0 );
0086
0087     /* thread switch occurs */
0088
0089   status = pthread_mutex_unlock( &MutexId );
0090   rtems_test_assert( status == 0 );
0091
0092     /* thread switch occurs */
0093
0094   return NULL;
0095 }
0096
0097 void *POSIX_Init(
0098   void *argument
0099 )
0100 {
0101   int                 i;
0102   int                 status;
0103   pthread_t           threadId;
0104   pthread_attr_t      attr;
0105   struct sched_param  param;
0106
0107   TEST_BEGIN();
0108
0109   /*
0110    * Deliberately create the mutex BEFORE the threads.  This way the
0111    * threads should preempt this thread and block as they are created.
0112    */
0113   status = pthread_mutex_init( &MutexId, NULL );
0114   rtems_test_assert( status == 0 );
0115
0116   /*
0117    * Lock the mutex so the threads will block.
0118    */
0119   status = pthread_mutex_lock( &MutexId );
0120   rtems_test_assert( status == 0 );
0121
0122   /*
0123    * Now lower our priority
0124    */
0125   status = pthread_attr_init( &attr );
0126   rtems_test_assert( status == 0 );
0127
0128   status = pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
0129   rtems_test_assert( status == 0 );
0130
0131   status = pthread_attr_setschedpolicy( &attr, SCHED_RR );
0132   rtems_test_assert( status == 0 );
0133
0134   param.sched_priority = 2;
0135   status = pthread_attr_setschedparam( &attr, &param );
0136   rtems_test_assert( status == 0 );
0137
0138   /*
0139    * And create rest of threads as more important than we are.  They
0140    * will preempt us as they are created and block.
0141    */
0142   for ( i=0 ; i < OPERATION_COUNT ; i++ ) {
0143
0144     param.sched_priority = 3 + i;
0145     status = pthread_attr_setschedparam( &attr, &param );
0146     rtems_test_assert( status == 0 );
0147
0148     status = pthread_create(
0149       &threadId,
0150       &attr,
0151       (i == OPERATION_COUNT - 1) ? Low : Middle,
0152       NULL
0153     );
0154     rtems_test_assert( status == 0 );
0155   }
0156
0157   /*
0158    * Now start the timer which will be stopped in Low
0159    */
0160   benchmark_timer_initialize();
0161
0162     status = pthread_mutex_unlock( &MutexId );
0163     rtems_test_assert( status == 0 );
0164
0165       /* thread switch occurs */
0166   return NULL;
0167 }
0168
0169 /* configuration information */
0170
0171 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
0172 #define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER
0173
0174 #define CONFIGURE_MAXIMUM_POSIX_THREADS     OPERATION_COUNT + 2
0175 #define CONFIGURE_POSIX_INIT_THREAD_TABLE
0176
0177 #define CONFIGURE_INIT
0178
0179 #include <rtems/confdefs.h>
0180   /* end of file */