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/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define TEST_INIT
#define CONFIGURE_INIT
#include "system.h"
#define MAXIMUM_DISTRIBUTION 1000
#undef OPERATION_COUNT
#define OPERATION_COUNT 100000
const char rtems_test_name[] = "TIME CHECKER";
uint32_t Distribution[ MAXIMUM_DISTRIBUTION + 1 ];
rtems_task Task_1(
rtems_task_argument argument
);
void check_read_timer( void );
rtems_task Init(
rtems_task_argument argument
)
{
rtems_id id;
rtems_status_code status;
/*
* Tell the Timer Driver what we are doing
*/
benchmark_timer_disable_subtracting_average_overhead( 1 );
Print_Warning();
TEST_BEGIN();
Task_name[ 1 ] = rtems_build_name( 'T', 'A', '1', ' ' ),
status = rtems_task_create(
1,
5,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&id
);
directive_failed( status, "rtems_task_create of TA1" );
status = rtems_task_start( id, Task_1, 0 );
directive_failed( status, "rtems_task_start of TA1" );
status = rtems_task_delete( RTEMS_SELF );
directive_failed( status, "rtems_task_delete of RTEMS_SELF" );
}
rtems_task Task_1(
rtems_task_argument argument
)
{
uint32_t index;
check_read_timer();
rtems_test_pause();
benchmark_timer_initialize();
end_time = benchmark_timer_read();
put_time(
"Time Check: NULL timer stopped at",
end_time,
1,
0,
0
);
benchmark_timer_initialize();
for ( index = 1 ; index <= 1000 ; index++ )
(void) benchmark_timer_empty_function();
end_time = benchmark_timer_read();
put_time(
"Time Check: LOOP (1000) timer stopped at",
end_time,
1,
0,
0
);
benchmark_timer_initialize();
for ( index = 1 ; index <= 10000 ; index++ )
(void) benchmark_timer_empty_function();
end_time = benchmark_timer_read();
put_time(
"Time Check: LOOP (10000) timer stopped at",
end_time,
1,
0,
0
);
benchmark_timer_initialize();
for ( index = 1 ; index <= 50000 ; index++ )
(void) benchmark_timer_empty_function();
end_time = benchmark_timer_read();
put_time(
"Time Check: LOOP (50000) timer stopped at",
end_time,
1,
0,
0
);
benchmark_timer_initialize();
for ( index = 1 ; index <= 100000 ; index++ )
(void) benchmark_timer_empty_function();
end_time = benchmark_timer_read();
put_time(
"Time Check: LOOP (100000) timer stopped at",
end_time,
1,
0,
0
);
TEST_END();
rtems_test_exit( 0 );
}
void check_read_timer()
{
uint32_t index;
uint32_t time;
for ( index = 1 ; index <= MAXIMUM_DISTRIBUTION ; index++ )
Distribution[ index ] = 0;
for ( index = 1 ; index <= OPERATION_COUNT ; ) {
benchmark_timer_initialize();
end_time = benchmark_timer_read();
if ( end_time > MAXIMUM_DISTRIBUTION ) {
/*
* Under UNIX a simple process swap takes longer than we
* consider valid for our testing purposes.
*/
printf( "TOO LONG (%" PRIu32 ") at index %" PRIu32 "!!!\n", end_time, index );
continue;
}
Distribution[ end_time ]++;
index++;
}
printf( "Units may not be in microseconds for this test!!!\n" );
time = 0;
for ( index = 0 ; index <= MAXIMUM_DISTRIBUTION ; index++ ) {
time += (Distribution[ index ] * index);
if ( Distribution[ index ] != 0 )
printf( "%" PRId32 " %" PRId32 "\n", index, Distribution[ index ] );
}
printf( "Total time = %" PRId32 "\n", time );
printf( "Average time = %" PRId32 "\n", time / OPERATION_COUNT );
}
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