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1 /*================================================================= |
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2 // |
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3 // kmutex1.c |
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4 // |
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5 // Kernel C API Mutex 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: 1998-03-23 |
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35 // Description: Tests basic mutex functionality. |
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36 // Omissions: Timed wait. |
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37 //####DESCRIPTIONEND#### |
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38 */ |
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39 |
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40 #include <cyg/kernel/kapi.h> |
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41 |
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42 #include <cyg/infra/testcase.h> |
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43 |
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44 #ifdef CYGFUN_KERNEL_API_C |
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45 |
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46 #include "testaux.h" |
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47 |
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48 #define NTHREADS 3 |
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49 #define STACKSIZE 4096 |
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50 |
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51 static cyg_handle_t thread[NTHREADS]; |
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52 |
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53 static cyg_thread thread_obj[NTHREADS]; |
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54 static char stack[NTHREADS][STACKSIZE]; |
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55 |
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56 |
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57 static cyg_mutex_t m0, m1; |
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58 static cyg_cond_t cvar0, cvar1, cvar2; |
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59 |
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60 static cyg_ucount8 m0d=0, m1d=0; |
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61 |
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62 static void finish( cyg_ucount8 t ) |
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63 { |
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64 cyg_mutex_lock( &m1 ); { |
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65 m1d |= 1<<t; |
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66 if( 0x7 == m1d ) |
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67 CYG_TEST_PASS_FINISH("Kernel C API Mutex 1 OK"); |
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68 cyg_cond_wait( &cvar2 ); |
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69 } /* cyg_mutex_unlock( &m1 ); */ |
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70 CYG_TEST_FAIL_FINISH("Not reached"); |
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71 } |
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72 |
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73 static void entry0( cyg_addrword_t data ) |
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74 { |
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75 cyg_mutex_lock( &m0 ); { |
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76 CHECK( ! cyg_mutex_trylock( &m0 ) ); |
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77 cyg_mutex_lock( &m1 ); { |
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78 CHECK( ! cyg_mutex_trylock( &m0 ) ); |
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79 } cyg_mutex_unlock( &m1 ); |
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80 } cyg_mutex_unlock( &m0 ); |
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81 |
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82 cyg_mutex_lock( &m0 ); { |
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83 while ( 0 == m0d ) |
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84 cyg_cond_wait( &cvar0 ); |
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85 CHECK( 1 == m0d++ ); |
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86 cyg_cond_signal( &cvar0 ); |
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87 while ( 4 != m0d ) |
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88 cyg_cond_wait( &cvar1 ); |
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89 CHECK( 4 == m0d ); |
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90 } cyg_mutex_unlock( &m0 ); |
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91 |
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92 finish( (cyg_ucount8)data ); |
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93 } |
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94 |
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95 static void entry1( cyg_addrword_t data ) |
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96 { |
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97 cyg_mutex_lock( &m0 ); { |
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98 CHECK( cyg_mutex_trylock( &m1 ) ); { |
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99 } cyg_mutex_unlock( &m1 ); |
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100 } cyg_mutex_unlock( &m0 ); |
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101 |
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102 cyg_mutex_lock( &m0 ); { |
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103 CHECK( 0 == m0d++ ); |
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104 cyg_cond_broadcast( &cvar0 ); |
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105 } cyg_mutex_unlock( &m0 ); |
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106 |
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107 cyg_mutex_lock( &m0 ); { |
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108 while( 1 == m0d ) |
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109 cyg_cond_wait( &cvar0 ); |
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110 CHECK( 2 == m0d++ ); |
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111 cyg_cond_signal( &cvar0 ); |
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112 while( 3 == m0d ) |
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113 cyg_cond_wait( &cvar1 ); |
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114 } cyg_mutex_unlock( &m0 ); |
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115 |
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116 finish( (cyg_ucount8)data ); |
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117 } |
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118 |
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119 static void entry2( cyg_addrword_t data ) |
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120 { |
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121 cyg_mutex_lock( &m0 ); { |
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122 while( 3 != m0d ) { |
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123 cyg_cond_wait( &cvar0 ); |
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124 } |
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125 CHECK( 3 == m0d++ ); |
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126 cyg_cond_broadcast( &cvar1 ); |
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127 } cyg_mutex_unlock( &m0 ); |
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128 |
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129 finish( (cyg_ucount8)data ); |
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130 } |
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131 |
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132 void kmutex1_main( void ) |
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133 { |
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134 CYG_TEST_INIT(); |
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135 |
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136 cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "kmutex1-0", |
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137 (void *)stack[0], STACKSIZE, &thread[0], &thread_obj[0]); |
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138 cyg_thread_resume(thread[0]); |
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139 |
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140 cyg_thread_create(4, entry1 , (cyg_addrword_t)1, "kmutex1-1", |
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141 (void *)stack[1], STACKSIZE, &thread[1], &thread_obj[1]); |
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142 cyg_thread_resume(thread[1]); |
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143 |
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144 cyg_thread_create(4, entry2 , (cyg_addrword_t)2, "kmutex1-2", |
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145 (void *)stack[2], STACKSIZE, &thread[2], &thread_obj[2]); |
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146 cyg_thread_resume(thread[2]); |
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147 |
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148 cyg_mutex_init( &m0 ); |
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149 cyg_mutex_init( &m1 ); |
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150 |
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151 cyg_cond_init( &cvar0, &m0 ); |
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152 cyg_cond_init( &cvar1, &m0 ); |
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153 cyg_cond_init( &cvar2, &m1 ); |
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154 |
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155 cyg_scheduler_start(); |
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156 |
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157 CYG_TEST_FAIL_FINISH("Not reached"); |
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158 } |
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159 |
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160 externC void |
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161 cyg_start( void ) |
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162 { |
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163 kmutex1_main(); |
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164 } |
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165 |
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166 #else /* def CYGFUN_KERNEL_API_C */ |
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167 externC void |
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168 cyg_start( void ) |
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169 { |
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170 CYG_TEST_INIT(); |
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171 CYG_TEST_PASS_FINISH("Kernel C API layer disabled"); |
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172 } |
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173 #endif /* def CYGFUN_KERNEL_API_C */ |
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174 |
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175 /* EOF kmutex1.c */ |
