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1 //========================================================================== |
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2 // |
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3 // thread2.cxx |
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4 // |
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5 // Thread test 2 |
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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) 1998,1999 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: 1998-02-19 |
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35 // Description: |
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36 // tests scheduler & threads & priorities |
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37 // + create multiple threads with various priorities |
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38 // + check highest priority running thread is always running |
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39 // + check next highest runs when highest suspended |
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40 // + check several threads of equal priority share time |
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41 // (only !CYG_SCHED_UNIQUE_PRIORITIES) |
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42 // + check other threads are starved |
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43 // + check setting priority dynamically causes a thread to |
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44 // become/stay current/non-current |
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45 // Omissions: |
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46 // check yield |
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47 // check can set threads with min and max priority |
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48 // Options: |
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49 // CYG_SCHED_UNIQUE_PRIORITIES |
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50 // CYGIMP_THREAD_PRIORITY |
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51 // CYGNUM_KERNEL_SCHED_PRIORITIES |
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52 // CYGSEM_KERNEL_SCHED_BITMAP |
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53 // CYGSEM_KERNEL_SCHED_MLQUEUE |
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54 //####DESCRIPTIONEND#### |
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55 |
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56 #include <pkgconf/kernel.h> |
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57 |
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58 #include <cyg/kernel/thread.hxx> |
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59 #include <cyg/kernel/thread.inl> |
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60 #include <cyg/kernel/sched.hxx> |
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61 #include <cyg/kernel/mutex.hxx> |
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62 #include <cyg/kernel/sema.hxx> |
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63 |
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64 #include <cyg/infra/testcase.h> |
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65 |
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66 #include <cyg/kernel/sched.inl> |
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67 |
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68 #ifndef CYGIMP_THREAD_PRIORITY |
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69 #error "Test requires thread priorities" |
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70 #endif |
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71 |
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72 static Cyg_Counting_Semaphore s0, s1, s2; |
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73 |
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74 static volatile cyg_ucount8 q = 0; |
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75 |
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76 static Cyg_Thread *thread0, *thread1, *thread2; |
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77 |
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78 #define NTHREADS 3 |
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79 #include "testaux.hxx" |
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80 |
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81 static void entry0( CYG_ADDRWORD data ) |
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82 { |
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83 CHECK( 0 == q++ ); |
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84 s0.wait(); |
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85 CHECK( 3 == q++ ); |
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86 s1.post(); |
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87 CHECK( 4 == q++ ); |
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88 s0.wait(); |
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89 s0.wait(); |
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90 CYG_TEST_PASS_FINISH("Thread 2 OK"); |
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91 } |
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92 |
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93 static void entry1( CYG_ADDRWORD data ) |
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94 { |
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95 CHECK( 1 == q++ ); |
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96 s1.wait(); |
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97 CHECK( 5 == q++ ); |
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98 thread0->set_priority(9); |
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99 s0.post(); |
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100 CHECK( 6 == q++ ); |
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101 thread2->set_priority(3); |
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102 CHECK( 8 == q++ ); |
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103 s2.post(); |
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104 CHECK( 12 == q++ ); |
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105 CHECK( 9 == thread0->get_priority() ); |
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106 CHECK( 6 == thread1->get_priority() ); |
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107 CHECK( 7 == thread2->get_priority() ); |
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108 q = 100; |
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109 #if !(CYG_SCHED_UNIQUE_PRIORITIES) && defined(CYGSEM_KERNEL_SCHED_TIMESLICE) |
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110 thread2->set_priority(6); |
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111 CHECK( 6 == thread1->get_priority() ); |
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112 CHECK( 6 == thread2->get_priority() ); |
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113 |
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114 while ( 100 == q ) |
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115 ; |
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116 CHECK( 101 == q++ ); |
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117 s1.wait(); |
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118 CHECK( 103 == q++ ); |
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119 #endif |
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120 s0.post(); |
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121 s1.wait(); |
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122 } |
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123 |
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124 static void entry2( CYG_ADDRWORD data ) |
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125 { |
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126 CHECK( 2 == q++ ); |
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127 s0.post(); |
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128 CHECK( 7 == q++ ); |
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129 s2.wait(); |
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130 CHECK( 9 == q++ ); |
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131 thread1->set_priority(6); |
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132 CHECK( 10 == q++ ); |
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133 thread2->set_priority(2); |
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134 CHECK( 11 == q++ ); |
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135 thread2->set_priority(7); |
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136 |
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137 #if !(CYG_SCHED_UNIQUE_PRIORITIES) && defined(CYGSEM_KERNEL_SCHED_TIMESLICE) |
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138 CHECK( 6 == thread1->get_priority() ); |
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139 CHECK( 6 == thread2->get_priority() ); |
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140 |
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141 CHECK( 100 == q++ ); |
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142 while ( 101 == q ) |
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143 ; |
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144 CHECK( 102 == q++ ); |
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145 s1.post(); |
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146 #endif |
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147 s0.post(); |
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148 s2.wait(); |
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149 } |
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150 |
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151 |
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152 void thread2_main( void ) |
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153 { |
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154 CYG_TEST_INIT(); |
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155 |
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156 thread0 = new_thread( entry0, 0 ); |
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157 thread1 = new_thread( entry1, 1 ); |
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158 thread2 = new_thread( entry2, 2 ); |
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159 |
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160 thread0->resume(); |
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161 thread1->resume(); |
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162 thread2->resume(); |
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163 |
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164 thread0->set_priority(5); |
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165 thread1->set_priority(6); |
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166 thread2->set_priority(7); |
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167 |
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168 if( 9 >= CYG_THREAD_MIN_PRIORITY ) |
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169 CYG_TEST_FAIL_FINISH("Test requires priorities up to 9"); |
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170 |
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171 if( 2 <= CYG_THREAD_MAX_PRIORITY ) |
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172 CYG_TEST_FAIL_FINISH("Test requires priorities as low as 2"); |
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173 |
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174 Cyg_Scheduler::start(); |
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175 |
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176 CYG_TEST_FAIL_FINISH("Unresolved"); |
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177 } |
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178 |
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179 externC void |
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180 cyg_start( void ) |
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181 { |
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182 thread2_main(); |
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183 } |
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184 |
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185 // EOF thread2.cxx |
