[19e9bf8] | 1 | /* |
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| 2 | * Copyright (c) 2014 Daniel Ramirez. (javamonn@gmail.com) |
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| 3 | * |
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| 4 | * This file's license is 2-clause BSD as in this distribution's LICENSE file. |
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| 5 | */ |
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| 6 | |
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| 7 | #include <timesys.h> |
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[8fbe2e6] | 8 | #include <rtems/btimer.h> |
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[19e9bf8] | 9 | |
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[1d799ad] | 10 | const char rtems_test_name[] = "RHSEMSHUFFLE"; |
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| 11 | |
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[19e9bf8] | 12 | #define BENCHMARKS 50000 |
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| 13 | |
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| 14 | rtems_task Task01( rtems_task_argument ignored ); |
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| 15 | rtems_task Task02( rtems_task_argument ignored ); |
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| 16 | rtems_task Init( rtems_task_argument ignored ); |
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| 17 | |
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| 18 | rtems_id Task_id[2]; |
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| 19 | rtems_name Task_name[2]; |
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| 20 | rtems_id sem_id; |
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| 21 | rtems_name sem_name; |
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| 22 | |
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| 23 | uint32_t telapsed; |
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| 24 | uint32_t tswitch_overhead; |
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| 25 | uint32_t count; |
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| 26 | uint32_t sem_exe; |
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| 27 | |
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| 28 | rtems_task Init( rtems_task_argument ignored ) |
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| 29 | { |
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| 30 | rtems_status_code status; |
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| 31 | rtems_attribute sem_attr; |
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| 32 | rtems_task_priority pri; |
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| 33 | rtems_mode prev_mode; |
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| 34 | |
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[e8c7dbe7] | 35 | Print_Warning(); |
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| 36 | |
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[1d799ad] | 37 | TEST_BEGIN(); |
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[893aac16] | 38 | |
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[19e9bf8] | 39 | sem_attr = RTEMS_BINARY_SEMAPHORE | RTEMS_PRIORITY; |
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| 40 | |
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| 41 | sem_name = rtems_build_name( 'S','0',' ',' ' ); |
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| 42 | status = rtems_semaphore_create( |
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| 43 | sem_name, |
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| 44 | 1, |
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| 45 | sem_attr, |
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| 46 | 0, |
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| 47 | &sem_id |
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| 48 | ); |
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| 49 | directive_failed( status, "rtems_semaphore_create of S0" ); |
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| 50 | |
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| 51 | Task_name[0] = rtems_build_name( 'T','A','0','1' ); |
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| 52 | status = rtems_task_create( |
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| 53 | Task_name[0], |
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| 54 | 30, |
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| 55 | RTEMS_MINIMUM_STACK_SIZE, |
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| 56 | RTEMS_DEFAULT_MODES, |
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| 57 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 58 | &Task_id[0] |
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| 59 | ); |
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| 60 | directive_failed( status, "rtems_task_create of TA01" ); |
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| 61 | |
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| 62 | Task_name[1] = rtems_build_name( 'T','A','0','2' ); |
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| 63 | status = rtems_task_create( |
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| 64 | Task_name[1], |
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| 65 | 30, |
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| 66 | RTEMS_MINIMUM_STACK_SIZE, |
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| 67 | RTEMS_DEFAULT_MODES, |
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| 68 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 69 | &Task_id[1] |
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| 70 | ); |
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| 71 | directive_failed( status , "rtems_task_create of TA02\n" ); |
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| 72 | |
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| 73 | rtems_task_mode( RTEMS_PREEMPT, RTEMS_PREEMPT_MASK, &prev_mode ); |
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| 74 | /* Lower own priority so TA01 can start up and run */ |
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| 75 | rtems_task_set_priority( RTEMS_SELF, 40, &pri); |
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| 76 | |
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| 77 | /* Get time of benchmark with no semaphore shuffling */ |
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| 78 | sem_exe = 0; |
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| 79 | status = rtems_task_start( Task_id[0], Task01, 0 ); |
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| 80 | directive_failed( status, "rtems_task_start of TA01" ); |
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| 81 | |
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| 82 | /* Get time of benchmark with semaphore shuffling */ |
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| 83 | sem_exe = 1; |
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| 84 | status = rtems_task_restart( Task_id[0], 0 ); |
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| 85 | directive_failed( status, "rtems_task_restart of TA01" ); |
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| 86 | |
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| 87 | /* Should never reach here */ |
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| 88 | rtems_test_assert( false ); |
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| 89 | } |
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| 90 | |
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| 91 | rtems_task Task01( rtems_task_argument ignored ) |
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| 92 | { |
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| 93 | rtems_status_code status; |
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| 94 | |
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| 95 | /* Start up TA02, yield so it can run */ |
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| 96 | if ( sem_exe == 0 ) { |
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| 97 | status = rtems_task_start( Task_id[1], Task02, 0 ); |
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| 98 | directive_failed( status, "rtems_task_start of TA02" ); |
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| 99 | } else { |
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| 100 | status = rtems_task_restart( Task_id[1], 0 ); |
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| 101 | directive_failed( status, "rtems_task_restart of TA02" ); |
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| 102 | } |
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| 103 | rtems_task_wake_after( RTEMS_YIELD_PROCESSOR ); |
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| 104 | |
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| 105 | /* Benchmark code */ |
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| 106 | for ( ; count < BENCHMARKS ; ) { |
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| 107 | if ( sem_exe == 1 ) { |
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| 108 | rtems_semaphore_obtain( sem_id, RTEMS_WAIT, 0 ); |
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| 109 | } |
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| 110 | rtems_task_wake_after( RTEMS_YIELD_PROCESSOR ); |
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| 111 | |
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| 112 | if ( sem_exe == 1 ) { |
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| 113 | rtems_semaphore_release( sem_id ); |
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| 114 | } |
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| 115 | rtems_task_wake_after( RTEMS_YIELD_PROCESSOR ); |
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| 116 | } |
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| 117 | |
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| 118 | /* Should never reach here */ |
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| 119 | rtems_test_assert( false ); |
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| 120 | } |
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| 121 | |
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| 122 | rtems_task Task02( rtems_task_argument ignored ) |
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| 123 | { |
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| 124 | |
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| 125 | /* Benchmark code */ |
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| 126 | benchmark_timer_initialize(); |
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| 127 | for ( count = 0; count < BENCHMARKS; count++ ) { |
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| 128 | if ( sem_exe == 1 ) { |
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| 129 | rtems_semaphore_obtain( sem_id, RTEMS_WAIT, 0 ); |
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| 130 | } |
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| 131 | rtems_task_wake_after( RTEMS_YIELD_PROCESSOR ); |
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| 132 | |
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| 133 | if ( sem_exe == 1 ) { |
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| 134 | rtems_semaphore_release( sem_id ); |
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| 135 | } |
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| 136 | rtems_task_wake_after( RTEMS_YIELD_PROCESSOR ); |
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| 137 | } |
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| 138 | telapsed = benchmark_timer_read(); |
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| 139 | |
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| 140 | /* Check which run this was */ |
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| 141 | if (sem_exe == 0) { |
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| 142 | tswitch_overhead = telapsed; |
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| 143 | rtems_task_suspend( Task_id[0] ); |
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| 144 | rtems_task_suspend( RTEMS_SELF ); |
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| 145 | } else { |
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| 146 | put_time( |
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| 147 | "Rhealstone: Semaphore Shuffle", |
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| 148 | telapsed, |
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| 149 | (BENCHMARKS * 2), /* Total number of semaphore-shuffles*/ |
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| 150 | tswitch_overhead, /* Overhead of loop and task switches */ |
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| 151 | 0 |
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| 152 | ); |
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[1d799ad] | 153 | TEST_END(); |
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[19e9bf8] | 154 | rtems_test_exit( 0 ); |
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| 155 | } |
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| 156 | } |
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| 157 | |
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| 158 | /* configuration information */ |
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| 159 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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| 160 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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| 161 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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| 162 | #define CONFIGURE_MAXIMUM_TASKS 3 |
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| 163 | #define CONFIGURE_MAXIMUM_SEMAPHORES 1 |
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| 164 | #define CONFIGURE_INIT |
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| 165 | #include <rtems/confdefs.h> |
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