tmtests/tmck/task1.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 <rtems/btimer.h>
0038
0039 #define CONFIGURE_INIT
0040 #include "system.h"
0041
0042 #if !defined(MAXIMUM_DISTRIBUTION)
0043 #define MAXIMUM_DISTRIBUTION 1000
0044 #endif
0045
0046 const char rtems_test_name[] = "TIME CHECKER";
0047
0048 uint32_t Distribution[ MAXIMUM_DISTRIBUTION + 1 ];
0049
0050 rtems_task Task_1(
0051   rtems_task_argument argument
0052 );
0053
0054 void check_read_timer( void );
0055
0056 rtems_task Init(
0057   rtems_task_argument argument
0058 )
0059 {
0060   rtems_id          id;
0061   rtems_status_code status;
0062
0063   /*
0064    *  Tell the Timer Driver what we are doing
0065    */
0066
0067   benchmark_timer_disable_subtracting_average_overhead( 1 );
0068
0069   Print_Warning();
0070
0071   TEST_BEGIN();
0072
0073   Task_name[ 1 ] = rtems_build_name( 'T', 'A', '1', ' ' ),
0074
0075   status = rtems_task_create(
0076     1,
0077     5,
0078     RTEMS_MINIMUM_STACK_SIZE,
0079     RTEMS_DEFAULT_MODES,
0080     RTEMS_DEFAULT_ATTRIBUTES,
0081     &id
0082   );
0083   directive_failed( status, "rtems_task_create of TA1" );
0084
0085   status = rtems_task_start( id, Task_1, 0 );
0086   directive_failed( status, "rtems_task_start of TA1" );
0087
0088   rtems_task_exit();
0089 }
0090
0091 rtems_task Task_1(
0092   rtems_task_argument argument
0093 )
0094 {
0095   uint32_t   index;
0096
0097   check_read_timer();
0098
0099   benchmark_timer_initialize();
0100   end_time = benchmark_timer_read();
0101
0102   put_time(
0103     "Time Check: NULL timer stopped at",
0104     end_time,
0105     1,
0106     0,
0107     0
0108   );
0109
0110   benchmark_timer_initialize();
0111   for ( index = 1 ; index <= 1000 ; index++ )
0112     (void) benchmark_timer_empty_function();
0113   end_time = benchmark_timer_read();
0114
0115   put_time(
0116     "Time Check: LOOP (1000) timer stopped at",
0117     end_time,
0118     1,
0119     0,
0120     0
0121   );
0122
0123   benchmark_timer_initialize();
0124   for ( index = 1 ; index <= 10000 ; index++ )
0125     (void) benchmark_timer_empty_function();
0126   end_time = benchmark_timer_read();
0127
0128   put_time(
0129     "Time Check: LOOP (10000) timer stopped at",
0130     end_time,
0131     1,
0132     0,
0133     0
0134   );
0135
0136   benchmark_timer_initialize();
0137   for ( index = 1 ; index <= 50000 ; index++ )
0138     (void) benchmark_timer_empty_function();
0139   end_time = benchmark_timer_read();
0140
0141   put_time(
0142     "Time Check: LOOP (50000) timer stopped at",
0143     end_time,
0144     1,
0145     0,
0146     0
0147   );
0148
0149   benchmark_timer_initialize();
0150   for ( index = 1 ; index <= 100000 ; index++ )
0151     (void) benchmark_timer_empty_function();
0152   end_time = benchmark_timer_read();
0153
0154   put_time(
0155     "Time Check: LOOP (100000) timer stopped at",
0156     end_time,
0157     1,
0158     0,
0159     0
0160   );
0161
0162   TEST_END();
0163   rtems_test_exit( 0 );
0164 }
0165
0166 void check_read_timer()
0167 {
0168   uint32_t   index;
0169   uint32_t   time;
0170
0171   for ( index = 1 ; index <= MAXIMUM_DISTRIBUTION ; index++ )
0172     Distribution[ index ] = 0;
0173
0174   for ( index = 1 ; index <= OPERATION_COUNT ; ) {
0175     benchmark_timer_initialize();
0176     end_time = benchmark_timer_read();
0177     if ( end_time > MAXIMUM_DISTRIBUTION ) {
0178       /*
0179        *  Under UNIX a simple process swap takes longer than we
0180        *  consider valid for our testing purposes.
0181        */
0182       printf( "TOO LONG (%" PRIu32 ") at index %" PRIu32 "!!!\n", end_time, index );
0183       continue;
0184     }
0185     Distribution[ end_time ]++;
0186     index++;
0187   }
0188
0189   printf( "Units may not be in microseconds for this test!!!\n" );
0190   time = 0;
0191   for ( index = 0 ; index <= MAXIMUM_DISTRIBUTION ; index++ ) {
0192     time += (Distribution[ index ] * index);
0193     if ( Distribution[ index ] != 0 )
0194       printf( "%" PRId32 " %" PRId32 "\n", index, Distribution[ index ] );
0195   }
0196   printf( "Total time = %" PRId32 "\n", time );
0197   printf( "Average time = %" PRId32 "\n", time / OPERATION_COUNT );
0198 }