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Diffstat (limited to 'testsuites/rhealstone/rhmlatency/mlatency.c')
| -rw-r--r-- | testsuites/rhealstone/rhmlatency/mlatency.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/testsuites/rhealstone/rhmlatency/mlatency.c b/testsuites/rhealstone/rhmlatency/mlatency.c new file mode 100644 index 0000000000..065d0f40af --- /dev/null +++ b/testsuites/rhealstone/rhmlatency/mlatency.c @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2014 Daniel Ramirez. (javamonn@gmail.com) + * + * This file's license is 2-clause BSD as in this distribution's LICENSE file. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <timesys.h> +#include <rtems/timerdrv.h> + +#define MESSAGE_SIZE (sizeof(long) * 4) +#define BENCHMARKS 50000 + +rtems_task Init( rtems_task_argument ignored ); +rtems_task Task01( rtems_task_argument ignored ); +rtems_task Task02( rtems_task_argument ignored ); + +uint32_t telapsed; +uint32_t tloop_overhead; +uint32_t treceive_overhead; +uint32_t count; +rtems_id Task_id[2]; +rtems_name Task_name[2]; +rtems_id Queue_id; +long Buffer[4]; + +void Init( + rtems_task_argument argument +) +{ + rtems_status_code status; + + Print_Warning(); + + status = rtems_message_queue_create( + rtems_build_name( 'M', 'Q', '1', ' ' ), + 1, + MESSAGE_SIZE, + RTEMS_DEFAULT_ATTRIBUTES, + &Queue_id + ); + directive_failed( status, "rtems_message_queue_create" ); + + Task_name[0] = rtems_build_name( 'T','A','0','1' ); + status = rtems_task_create( + Task_name[0], + 30, /* TA01 is low priority task */ + RTEMS_MINIMUM_STACK_SIZE, + RTEMS_DEFAULT_MODES, + RTEMS_DEFAULT_ATTRIBUTES, + &Task_id[0] + ); + directive_failed( status, "rtems_task_create of TA01"); + + Task_name[1] = rtems_build_name( 'T','A','0','2' ); + status = rtems_task_create( + Task_name[1], + 28, /* High priority task */ + RTEMS_MINIMUM_STACK_SIZE, + RTEMS_DEFAULT_MODES, + RTEMS_DEFAULT_ATTRIBUTES, + &Task_id[1] + ); + directive_failed( status, "rtems_task_create of TA01" ); + + benchmark_timer_initialize(); + for ( count = 0; count < BENCHMARKS - 1; count++ ) { + /* message send/recieve */ + } + tloop_overhead = benchmark_timer_read(); + + status = rtems_task_start( Task_id[0], Task01, 0 ); + directive_failed( status, "rtems_task_start of TA01" ); + + status = rtems_task_delete( RTEMS_SELF ); + directive_failed( status, "rtems_task_delete of RTEMS_SELF" ); +} + +rtems_task Task01( rtems_task_argument ignored ) +{ + rtems_status_code status; + + /* Put a message in the queue so recieve overhead can be found. */ + (void) rtems_message_queue_send( Queue_id, Buffer, MESSAGE_SIZE ); + + /* Start up second task, get preempted */ + status = rtems_task_start( Task_id[1], Task02, 0 ); + directive_failed( status, "rtems_task_start" ); + + for ( ; count < BENCHMARKS; count++ ) { + (void) rtems_message_queue_send( Queue_id, Buffer, MESSAGE_SIZE ); + } + + /* Should never reach here */ + rtems_test_assert( false ); + +} + +rtems_task Task02( rtems_task_argument ignored ) +{ + size_t size; + + /* find recieve overhead - no preempt or task switch */ + benchmark_timer_initialize(); + (void) rtems_message_queue_receive( + Queue_id, + (long (*)[4]) Buffer, + &size, + RTEMS_DEFAULT_OPTIONS, + RTEMS_NO_TIMEOUT + ); + treceive_overhead = benchmark_timer_read(); + + /* Benchmark code */ + benchmark_timer_initialize(); + for ( count = 0; count < BENCHMARKS - 1; count++ ) { + (void) rtems_message_queue_receive( + Queue_id, + (long (*)[4]) Buffer, + &size, + RTEMS_DEFAULT_OPTIONS, + RTEMS_NO_TIMEOUT + ); + } + telapsed = benchmark_timer_read(); + + put_time( + "Rhealstone: Intertask Message Latency", + telapsed, /* Total time of all benchmarks */ + BENCHMARKS - 1, /* Total benchmarks */ + tloop_overhead, /* Overhead of loops */ + treceive_overhead /* Overhead of recieve call and task switch */ + ); + + rtems_test_exit( 0 ); +} + +/* configuration information */ + +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER + +#define CONFIGURE_MAXIMUM_TASKS 3 +#define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 1 +#define CONFIGURE_TICKS_PER_TIMESLICE 0 +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_INIT +#include <rtems/confdefs.h> |