psxtmtests/psxtmthread05/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 #ifdef HAVE_CONFIG_H
0030 #include "config.h"
0031 #endif
0032
0033 #include <timesys.h>
0034 #include <pthread.h>
0035 #include <sched.h>
0036 #include <rtems/btimer.h>
0037 #include "test_support.h"
0038
0039 const char rtems_test_name[] = "PSXTMTHREAD 05";
0040
0041 /* forward declarations to avoid warnings */
0042 void *POSIX_Init(void *argument);
0043 void benchmark_pthread_create(void);
0044 void benchmark_pthread_setschedparam(void);
0045 void *test_thread(void *argument);
0046
0047 void benchmark_pthread_setschedparam(void)
0048 {
0049   int status;
0050   int policy;
0051   struct sched_param param;
0052   pthread_t thread_ID;
0053
0054   status = pthread_create(&thread_ID, NULL, test_thread, NULL);
0055   rtems_test_assert( status == 0 );
0056
0057   /* make test_thread equal to POSIX_Init() */
0058   pthread_getschedparam(pthread_self(), &policy, &param);
0059
0060   pthread_setschedparam(thread_ID, policy, &param);
0061   /* At this point, we've switched to test_thread */
0062
0063   /* Back from test_thread, switch to test_thread again */
0064   param.sched_priority = sched_get_priority_min(policy);
0065
0066   benchmark_timer_initialize();
0067   //lower own priority to minimun, scheduler forces an involuntary context switch
0068   pthread_setschedparam(pthread_self(), policy, &param);
0069 }
0070
0071 void *test_thread(
0072   void *argument
0073 )
0074 {
0075   uint32_t end_time;
0076
0077   sched_yield();
0078
0079   end_time = benchmark_timer_read();
0080   put_time(
0081     "pthread_setschedparam: lower own priority preempt",
0082     end_time,
0083     1,        /* Only executed once */
0084     0,
0085     0
0086   );
0087
0088   TEST_END();
0089   rtems_test_exit(0);
0090   //Empty thread used in pthread_create().
0091   return NULL;
0092 }
0093
0094 void *POSIX_Init(
0095   void *argument
0096 )
0097 {
0098
0099   TEST_BEGIN();
0100   benchmark_pthread_setschedparam();
0101
0102   rtems_test_assert( 1 );
0103   return NULL;
0104 }
0105
0106 /* configuration information */
0107
0108 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
0109 #define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER
0110
0111 #define CONFIGURE_MAXIMUM_POSIX_THREADS     2
0112 #define CONFIGURE_POSIX_INIT_THREAD_TABLE
0113
0114 #define CONFIGURE_INIT
0115
0116 #include <rtems/confdefs.h>
0117 /* end of file */