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1 /*================================================================= |
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2 // |
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3 // ksem1.c |
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4 // |
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5 // C API semaphore test 1 |
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6 // |
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7 //========================================================================== |
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8 //####COPYRIGHTBEGIN#### |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Cygnus eCos Public License |
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12 // Version 1.0 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://sourceware.cygnus.com/ecos |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //========================================================================== |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): dsm |
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33 // Contributors: dsm |
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34 // Date: 1998-03-20 |
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35 // Description: Tests basic semaphore functionality. |
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36 //####DESCRIPTIONEND#### |
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37 */ |
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38 |
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39 #include <cyg/kernel/kapi.h> |
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40 |
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41 #include <cyg/infra/testcase.h> |
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42 |
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43 #ifdef CYGFUN_KERNEL_API_C |
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44 |
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45 #include "testaux.h" |
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46 |
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47 #define NTHREADS 2 |
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48 #define STACKSIZE 4096 |
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49 |
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50 static cyg_handle_t thread[NTHREADS]; |
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51 |
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52 static cyg_thread thread_obj[NTHREADS]; |
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53 static char stack[NTHREADS][STACKSIZE]; |
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54 |
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55 |
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56 static cyg_sem_t s0, s1, s2; |
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57 |
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58 static volatile cyg_ucount8 q = 0; |
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59 |
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60 static void entry0( cyg_addrword_t data ) |
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61 { |
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62 cyg_ucount32 val; |
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63 |
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64 cyg_semaphore_wait(&s0); |
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65 CHECK( 1 == q++ ); |
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66 cyg_semaphore_post(&s1); |
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67 cyg_semaphore_wait(&s0); |
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68 CHECK( 3 == q++ ); |
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69 cyg_semaphore_peek(&s0, &val); |
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70 CHECK( 0 == val); |
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71 CHECK( ! cyg_semaphore_trywait(&s0) ); |
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72 cyg_semaphore_post(&s0); |
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73 CHECK( 4 == q++ ); |
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74 cyg_semaphore_peek(&s0, &val); |
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75 CHECK( 1 == val); |
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76 cyg_semaphore_post(&s0); |
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77 cyg_semaphore_peek(&s0, &val); |
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78 CHECK( 2 == val); |
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79 cyg_semaphore_post(&s1); |
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80 cyg_semaphore_peek(&s2, &val); |
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81 CHECK( 0 == val); |
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82 cyg_semaphore_wait(&s2); |
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83 CHECK( 6 == q++ ); |
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84 CYG_TEST_PASS_FINISH("Kernel C API Semaphore 1 OK"); |
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85 } |
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86 |
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87 static void entry1( cyg_addrword_t data ) |
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88 { |
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89 cyg_ucount32 val; |
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90 |
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91 cyg_semaphore_peek(&s1, &val); |
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92 CHECK( 2 == val); |
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93 cyg_semaphore_wait(&s1); |
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94 cyg_semaphore_peek(&s1, &val); |
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95 CHECK( 1 == val); |
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96 cyg_semaphore_wait(&s1); |
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97 CHECK( 0 == q++ ); |
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98 cyg_semaphore_peek(&s0, &val); |
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99 CHECK( 0 == val); |
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100 cyg_semaphore_post(&s0); |
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101 cyg_semaphore_wait(&s1); |
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102 CHECK( 2 == q++ ); |
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103 cyg_semaphore_post(&s0); |
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104 cyg_semaphore_wait(&s1); |
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105 CHECK( 5 == q++ ); |
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106 cyg_semaphore_peek(&s0, &val); |
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107 CHECK( 2 == val); |
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108 CHECK( cyg_semaphore_trywait(&s0) ); |
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109 cyg_semaphore_peek(&s0, &val); |
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110 CHECK( 1 == val); |
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111 CHECK( cyg_semaphore_trywait(&s0) ); |
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112 cyg_semaphore_peek(&s0, &val); |
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113 CHECK( 0 == val); |
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114 cyg_semaphore_post(&s2); |
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115 cyg_semaphore_wait(&s0); |
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116 CYG_TEST_FAIL_FINISH("Not reached"); |
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117 } |
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118 |
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119 void ksem1_main( void ) |
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120 { |
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121 CYG_TEST_INIT(); |
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122 |
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123 cyg_semaphore_init( &s0, 0); |
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124 cyg_semaphore_init( &s1, 2); |
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125 cyg_semaphore_init( &s2, 0); |
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126 |
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127 cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "ksem1-0", |
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128 (void *)stack[0], STACKSIZE,&thread[0], &thread_obj[0]); |
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129 cyg_thread_resume(thread[0]); |
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130 |
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131 cyg_thread_create(4, entry1 , (cyg_addrword_t)1, "ksem1-1", |
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132 (void *)stack[1], STACKSIZE, &thread[1], &thread_obj[1]); |
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133 cyg_thread_resume(thread[1]); |
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134 |
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135 cyg_scheduler_start(); |
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136 |
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137 CYG_TEST_FAIL_FINISH("Not reached"); |
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138 } |
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139 |
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140 externC void |
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141 cyg_start( void ) |
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142 { |
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143 ksem1_main(); |
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144 } |
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145 |
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146 |
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147 #else /* def CYGFUN_KERNEL_API_C */ |
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148 externC void |
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149 cyg_start( void ) |
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150 { |
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151 CYG_TEST_INIT(); |
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152 CYG_TEST_PASS_FINISH("Kernel C API layer disabled"); |
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153 } |
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154 #endif /* def CYGFUN_KERNEL_API_C */ |
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155 |
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156 /* EOF ksem1.c */ |
