1 | /* |
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2 | * COPYRIGHT (c) 1989-2013. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.org/license/LICENSE. |
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8 | */ |
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9 | |
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10 | |
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11 | #ifdef HAVE_CONFIG_H |
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12 | #include "config.h" |
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13 | #endif |
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14 | |
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15 | #define CONFIGURE_INIT |
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16 | #include "system.h" |
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17 | |
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18 | #define MAXIMUM_DISTRIBUTION 1000 |
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19 | |
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20 | #undef OPERATION_COUNT |
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21 | #define OPERATION_COUNT 100000 |
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22 | |
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23 | const char rtems_test_name[] = "TIME CHECKER"; |
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24 | |
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25 | uint32_t Distribution[ MAXIMUM_DISTRIBUTION + 1 ]; |
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26 | |
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27 | rtems_task Task_1( |
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28 | rtems_task_argument argument |
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29 | ); |
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30 | |
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31 | void check_read_timer( void ); |
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32 | |
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33 | rtems_task Init( |
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34 | rtems_task_argument argument |
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35 | ) |
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36 | { |
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37 | rtems_id id; |
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38 | rtems_status_code status; |
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39 | |
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40 | /* |
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41 | * Tell the Timer Driver what we are doing |
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42 | */ |
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43 | |
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44 | benchmark_timer_disable_subtracting_average_overhead( 1 ); |
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45 | |
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46 | Print_Warning(); |
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47 | |
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48 | TEST_BEGIN(); |
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49 | |
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50 | Task_name[ 1 ] = rtems_build_name( 'T', 'A', '1', ' ' ), |
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51 | |
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52 | status = rtems_task_create( |
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53 | 1, |
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54 | 5, |
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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 | &id |
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59 | ); |
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60 | directive_failed( status, "rtems_task_create of TA1" ); |
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61 | |
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62 | status = rtems_task_start( id, Task_1, 0 ); |
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63 | directive_failed( status, "rtems_task_start of TA1" ); |
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64 | |
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65 | rtems_task_exit(); |
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66 | } |
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67 | |
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68 | rtems_task Task_1( |
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69 | rtems_task_argument argument |
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70 | ) |
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71 | { |
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72 | uint32_t index; |
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73 | |
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74 | check_read_timer(); |
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75 | rtems_test_pause(); |
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76 | |
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77 | benchmark_timer_initialize(); |
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78 | end_time = benchmark_timer_read(); |
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79 | |
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80 | put_time( |
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81 | "Time Check: NULL timer stopped at", |
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82 | end_time, |
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83 | 1, |
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84 | 0, |
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85 | 0 |
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86 | ); |
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87 | |
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88 | benchmark_timer_initialize(); |
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89 | for ( index = 1 ; index <= 1000 ; index++ ) |
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90 | (void) benchmark_timer_empty_function(); |
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91 | end_time = benchmark_timer_read(); |
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92 | |
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93 | put_time( |
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94 | "Time Check: LOOP (1000) timer stopped at", |
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95 | end_time, |
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96 | 1, |
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97 | 0, |
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98 | 0 |
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99 | ); |
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100 | |
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101 | benchmark_timer_initialize(); |
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102 | for ( index = 1 ; index <= 10000 ; index++ ) |
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103 | (void) benchmark_timer_empty_function(); |
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104 | end_time = benchmark_timer_read(); |
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105 | |
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106 | put_time( |
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107 | "Time Check: LOOP (10000) timer stopped at", |
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108 | end_time, |
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109 | 1, |
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110 | 0, |
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111 | 0 |
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112 | ); |
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113 | |
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114 | benchmark_timer_initialize(); |
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115 | for ( index = 1 ; index <= 50000 ; index++ ) |
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116 | (void) benchmark_timer_empty_function(); |
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117 | end_time = benchmark_timer_read(); |
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118 | |
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119 | put_time( |
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120 | "Time Check: LOOP (50000) timer stopped at", |
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121 | end_time, |
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122 | 1, |
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123 | 0, |
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124 | 0 |
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125 | ); |
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126 | |
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127 | benchmark_timer_initialize(); |
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128 | for ( index = 1 ; index <= 100000 ; index++ ) |
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129 | (void) benchmark_timer_empty_function(); |
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130 | end_time = benchmark_timer_read(); |
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131 | |
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132 | put_time( |
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133 | "Time Check: LOOP (100000) timer stopped at", |
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134 | end_time, |
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135 | 1, |
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136 | 0, |
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137 | 0 |
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138 | ); |
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139 | |
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140 | TEST_END(); |
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141 | rtems_test_exit( 0 ); |
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142 | } |
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143 | |
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144 | void check_read_timer() |
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145 | { |
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146 | uint32_t index; |
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147 | uint32_t time; |
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148 | |
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149 | for ( index = 1 ; index <= MAXIMUM_DISTRIBUTION ; index++ ) |
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150 | Distribution[ index ] = 0; |
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151 | |
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152 | for ( index = 1 ; index <= OPERATION_COUNT ; ) { |
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153 | benchmark_timer_initialize(); |
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154 | end_time = benchmark_timer_read(); |
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155 | if ( end_time > MAXIMUM_DISTRIBUTION ) { |
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156 | /* |
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157 | * Under UNIX a simple process swap takes longer than we |
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158 | * consider valid for our testing purposes. |
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159 | */ |
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160 | printf( "TOO LONG (%" PRIu32 ") at index %" PRIu32 "!!!\n", end_time, index ); |
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161 | continue; |
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162 | } |
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163 | Distribution[ end_time ]++; |
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164 | index++; |
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165 | } |
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166 | |
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167 | printf( "Units may not be in microseconds for this test!!!\n" ); |
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168 | time = 0; |
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169 | for ( index = 0 ; index <= MAXIMUM_DISTRIBUTION ; index++ ) { |
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170 | time += (Distribution[ index ] * index); |
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171 | if ( Distribution[ index ] != 0 ) |
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172 | printf( "%" PRId32 " %" PRId32 "\n", index, Distribution[ index ] ); |
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173 | } |
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174 | printf( "Total time = %" PRId32 "\n", time ); |
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175 | printf( "Average time = %" PRId32 "\n", time / OPERATION_COUNT ); |
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176 | } |
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