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annotate packages/devs/watchdog/current/tests/watchdog.cxx @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
parents c38311975d4f
children
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1 //==========================================================================
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2 //
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3 // watchdog.cxx
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4 //
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5 // Watchdog test
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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 Red Hat eCos Public License
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12 // Version 1.1 (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://www.redhat.com/
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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 Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): nickg
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35 // Contributors: nickg
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36 // Date: 1998-07-20
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37 // Description: Tests the Kernel Wall Clock
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38 // This test exercises the Watchdog class and checks that it
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39 // works as advertised.
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40 //####DESCRIPTIONEND####
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41 // -------------------------------------------------------------------------
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42
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43 #include <pkgconf/kernel.h>
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44
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45 #include <cyg/kernel/thread.hxx>
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46 #include <cyg/kernel/thread.inl>
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47 #include <cyg/kernel/sched.hxx>
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48 #include <cyg/kernel/mutex.hxx>
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49 #include <cyg/kernel/sema.hxx>
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50 #include <cyg/kernel/clock.hxx>
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51
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52 #include <cyg/kernel/diag.h>
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53
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54 #include <cyg/devs/watchdog.hxx>
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55
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56 #include <cyg/infra/testcase.h>
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57 #include <cyg/infra/diag.h>
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58
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59 #if defined(CYGFUN_KERNEL_THREADS_TIMER) && \
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60 defined(CYGVAR_KERNEL_COUNTERS_CLOCK)
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61
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62 #include <cyg/kernel/sched.inl>
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63
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64 // -------------------------------------------------------------------------
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65 // Data for the test
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66
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67 #ifdef CYGNUM_HAL_STACK_SIZE_TYPICAL
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68 #define STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
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69 #else
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70 #define STACKSIZE (2*1024) // size of thread stack
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71 #endif
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72
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73 char thread_stack[STACKSIZE];
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74
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75 inline void *operator new(size_t size, void *ptr) { return ptr; };
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76
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77 // array of threads.
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78 char thread[sizeof(Cyg_Thread)];
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79
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80 Cyg_Thread *th;
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81
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82 //cyg_tick_count one_sec;
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83 cyg_tick_count watchdog_delay;
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84 volatile bool watchdog_fired;
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85 volatile cyg_tick_count watchdog_time;
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86
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87 #define WATCHDOG_LOOPS_HW 5
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88 #define WATCHDOG_LOOPS_SIM 1
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89 #define WATCHDOG_CYCLES_PER_LOOP_HW 10
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90 #define WATCHDOG_CYCLES_PER_LOOP_SIM 2
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91 #define WATCHDOG_TICKS_TILL_TIMEOUT 10
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92
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93 // -------------------------------------------------------------------------
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94 // Action functions:
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95
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96 void watchdog_action1( CYG_ADDRWORD data )
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97 {
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98 watchdog_fired = true;
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99 watchdog_time = Cyg_Clock::real_time_clock->current_value();
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100 }
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101
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102 void watchdog_action2( CYG_ADDRWORD data )
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103 {
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104 CYG_TEST_PASS_FINISH("Watchdog OK");
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105 }
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106
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107 // -------------------------------------------------------------------------
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108 // Thread body
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109
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110
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111 void watchdog_thread( CYG_ADDRWORD id )
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112 {
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113 cyg_tick_count watchdog_start_time;
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114 cyg_tick_count thread_start_time, thread_end_time;
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115 cyg_ucount8 watchdog_loops, watchdog_cycles_per_loop;
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116
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117 if (cyg_test_is_simulator) {
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118 watchdog_loops = WATCHDOG_LOOPS_SIM;
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119 watchdog_cycles_per_loop = WATCHDOG_CYCLES_PER_LOOP_SIM;
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120 } else {
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121 watchdog_loops = WATCHDOG_LOOPS_HW;
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122 watchdog_cycles_per_loop = WATCHDOG_CYCLES_PER_LOOP_HW;
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123 }
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124
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125 watchdog_fired = false;
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126 Cyg_Watchdog::watchdog.start();
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127
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128 CYG_TEST_INFO("Testing that watchdog does not fire early");
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129
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130 for (cyg_ucount8 tries = 0; tries < watchdog_loops; tries++) {
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131 diag_printf("Iteration #%d (testing over %d cycles)\n",
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132 tries, watchdog_cycles_per_loop);
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133
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134 // First test that the watchdog does not trigger when being reset.
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135 Cyg_Watchdog_Action wdaction( watchdog_action1, 0 );
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136
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137 wdaction.install();
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138 Cyg_Watchdog::watchdog.reset();
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139
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140 watchdog_start_time = Cyg_Clock::real_time_clock->current_value();
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141 watchdog_fired = false;
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142
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143 for( cyg_ucount8 i = 0; i < watchdog_cycles_per_loop; i++ ) {
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144 thread_start_time = Cyg_Clock::real_time_clock->current_value();
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145 th->delay( watchdog_delay-2 );
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146 Cyg_Watchdog::watchdog.reset();
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147 if (watchdog_fired) {
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148 thread_end_time = Cyg_Clock::real_time_clock->current_value();
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149 diag_printf("Watchdog fired prematurely after %d ticks\n",
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150 (int)(watchdog_time - watchdog_start_time));
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151 diag_printf(" Thread slept for %d ticks, loop #%d\n",
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152 (int)(thread_end_time - thread_start_time), i);
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153 CYG_TEST_FAIL_FINISH("Watchdog triggered unexpectedly");
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154 break;
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155 } else {
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156 CYG_TEST_STILL_ALIVE(i, "Resetting watchdog...");
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157 Cyg_Watchdog::watchdog.reset();
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158 watchdog_fired = false;
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159 watchdog_start_time = Cyg_Clock::real_time_clock->current_value();
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160 }
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161 }
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162 }
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163
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164 // Now check that it triggers when not reset
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165 CYG_TEST_INFO("Testing that watchdog fires");
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166 {
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167 Cyg_Watchdog_Action wdaction( watchdog_action2, 0 );
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168
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169 wdaction.install();
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170
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171 Cyg_Watchdog::watchdog.reset();
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172
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173 th->delay( watchdog_delay*WATCHDOG_TICKS_TILL_TIMEOUT );
0
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174 }
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175
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176 CYG_TEST_FAIL_FINISH("Watchdog failed to trigger");
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177 }
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178
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179 // -------------------------------------------------------------------------
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180
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181
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182 externC void
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183 cyg_start( void )
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184 {
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185 CYG_TEST_INIT();
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186
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187 #if !defined(CYGIMP_WATCHDOG_EMULATE) && defined(CYGPKG_HAL_MN10300_STDEVAL1)
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188 // Workaround for PR 17974
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189 if( cyg_test_is_simulator )
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190 CYG_TEST_NA("Watchdog device not implemented in MN10300 simulator.");
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191 #endif
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192
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193
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194 Cyg_Clock::cyg_resolution res = Cyg_Clock::real_time_clock->get_resolution();
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195
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196 cyg_uint64 wres = Cyg_Watchdog::watchdog.get_resolution();
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197
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198 // Calculate how many clock ticks there are in a watchdog cycle.
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199
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200 watchdog_delay = ((cyg_tick_count)wres * (cyg_tick_count)res.divisor );
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201 watchdog_delay /= res.dividend;
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202
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203 th = new((void *)&thread) Cyg_Thread(CYG_SCHED_DEFAULT_INFO,
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204 watchdog_thread,
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205 0,
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206 "watchdog_thread",
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207 (CYG_ADDRESS)thread_stack,
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208 STACKSIZE
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209 );
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210
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211 th->resume();
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212
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213 // Get the world going
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214 Cyg_Scheduler::scheduler.start();
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215
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216 }
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217
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218 #else // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc...
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219
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220 externC void
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221 cyg_start( void )
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222 {
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223 CYG_TEST_INIT();
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224 CYG_TEST_NA("Kernel real-time clock/threads timer disabled");
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225 }
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226
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227 #endif // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc...
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228
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229 // -------------------------------------------------------------------------
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230 // EOF watchdog.cxx