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annotate packages/io/wallclock/current/tests/wallclock.cxx @ 1223:dbcfe4e0dbd2

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New platform - TAMS MOAB - and generic changes to support it
author gthomas
date Fri, 19 Sep 2003 17:11:18 +0000
parents d2c90368aeef
children
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1 //==========================================================================
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2 //
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3 // wallclock.cxx
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4 //
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5 // WallClock test
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2003 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): nickg
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45 // Contributors: nickg
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46 // Date: 1998-07-20
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47 // Description: Tests the Kernel Wall Clock
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48 // This test exercises the WallClock class and checks that it
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49 // keeps time correctly.
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50 //####DESCRIPTIONEND####
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51 // -------------------------------------------------------------------------
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52
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53 #include <pkgconf/hal.h>
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54 #include <pkgconf/kernel.h>
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55
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56 #include <cyg/kernel/thread.hxx>
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57 #include <cyg/kernel/thread.inl>
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58 #include <cyg/kernel/sched.hxx>
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59 #include <cyg/kernel/mutex.hxx>
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60 #include <cyg/kernel/sema.hxx>
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61 #include <cyg/kernel/clock.hxx>
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62
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63 #include <cyg/kernel/diag.h>
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65 #include <cyg/io/wallclock.hxx> // The WallClock API
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67 #include <cyg/infra/testcase.h>
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68
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69 #if defined(CYGFUN_KERNEL_THREADS_TIMER) && \
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70 defined(CYGVAR_KERNEL_COUNTERS_CLOCK)
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71
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72 #include <cyg/kernel/sched.inl>
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73
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74 // -------------------------------------------------------------------------
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75 // Data for the test
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76
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77 #ifdef CYGNUM_HAL_STACK_SIZE_TYPICAL
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78 #define STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
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79 #else
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80 #define STACKSIZE (2*1024) // size of thread stack
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81 #endif
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82
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83 char thread_stack[STACKSIZE];
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84
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85 inline void *operator new(size_t size, void *ptr) { return ptr; };
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86
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87 // array of threads.
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88 char thread[sizeof(Cyg_Thread)];
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89
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90 Cyg_Thread *th;
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91
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92 // MN10300 sim takes 1min15secs to do one loop on 300MHz PII.
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93 #define LOOPS_SIM 2
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94 #define LOOPS_HW 10
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95
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96 cyg_int32 loops = LOOPS_HW;
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97 cyg_tick_count one_sec;
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98
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99 // -------------------------------------------------------------------------
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100 // Thread body
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101
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102
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103 void wallclock_thread( CYG_ADDRWORD id )
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104 {
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105 cyg_uint32 base;
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106 cyg_uint32 wtime;
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107 cyg_tick_count ticks;
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108 cyg_bool ok = true;
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109
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110 CYG_TEST_INFO("Testing accuracy of wallclock (10 seconds silence)");
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111
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112 // Check clock only every other second since the call itself may
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113 // take about a second.
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114
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115 // Start by synchronizing to next wallclock increment, then wait for
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116 // a bit to get away from the exact time of the increment (or minor
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117 // inaccuracies in the HW clock will cause failures).
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118 wtime = Cyg_WallClock::wallclock->get_current_time();
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119 do {
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120 base = Cyg_WallClock::wallclock->get_current_time();
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121 } while (base == wtime);
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122 th->delay( one_sec/10 );
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123
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124 for( int i = 0; i < loops; i += 2 )
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125 {
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126 // Make a note of the time
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127 ticks = Cyg_Clock::real_time_clock->current_value();
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128
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129 wtime = Cyg_WallClock::wallclock->get_current_time();
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130 if(wtime != base+i)
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131 {
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132 diag_printf("offset %d, read %d, expected %d\n", i, wtime, base+i);
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133 ok = false;
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134 }
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135
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136 // then calculate how much the above took so the delay
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137 // below can be made accurate.
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138 ticks = Cyg_Clock::real_time_clock->current_value() - ticks;
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139
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140 th->delay( 2*one_sec - ticks );
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141 }
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142
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143 if ( ! cyg_test_is_simulator ) {
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144 CYG_TEST_INFO("Tick output. Two seconds between each output.");
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145
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146 // Start by synchronizing to next wallclock increment, then
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147 // wait for a bit to get away from the exact time of the
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148 // increment (or minor inaccuracies in the HW clock will cause
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149 // failures).
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150 wtime = Cyg_WallClock::wallclock->get_current_time();
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151 do {
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152 base = Cyg_WallClock::wallclock->get_current_time();
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153 } while (base == wtime);
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154 th->delay( one_sec/10 );
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155
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156 for( int i = 0; i < loops; i += 2 )
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157 {
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158 // Make a note of the time
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159 ticks = Cyg_Clock::real_time_clock->current_value();
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160
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161 wtime = Cyg_WallClock::wallclock->get_current_time();
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162 if(wtime != base+i)
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163 {
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164 diag_printf("wallclock drift: saw %d expected %d\n",
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165 wtime, base+i);
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166 }
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167 CYG_TEST_STILL_ALIVE(i, "2xtick...");
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168
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169 // then calculate how much the above took so the delay
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170 // below can be made accurate.
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171 ticks = Cyg_Clock::real_time_clock->current_value() - ticks;
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172
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173 th->delay( 2*one_sec - ticks );
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174 }
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175 }
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176
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
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177 if (ok)
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178 CYG_TEST_PASS_FINISH("Wallclock OK");
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179 else
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180 CYG_TEST_FAIL_FINISH( "Clock out of sync" );
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181
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182 }
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183
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184 // -------------------------------------------------------------------------
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185
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186
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187 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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188 externC void
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189 cyg_hal_invoke_constructors();
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190 #endif
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191
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192 externC void
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193 cyg_start( void )
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194 {
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195 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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196 cyg_hal_invoke_constructors();
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197 #endif
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198 CYG_TEST_INIT();
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199
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200 // Dont run this test if we are in a simulator, it just takes far too long.
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201 if( cyg_test_is_simulator )
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202 CYG_TEST_NA("Wallclock test takes too long in simulators");
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203
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204 CYG_TEST_INFO("Starting wallclock test");
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205
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206 Cyg_Clock::cyg_resolution res = Cyg_Clock::real_time_clock->get_resolution();
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207
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208 one_sec = ( res.divisor * 1000000000LL ) / res.dividend ;
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209
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210 th = new((void *)&thread) Cyg_Thread(CYG_SCHED_DEFAULT_INFO,
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211 wallclock_thread,
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212 0,
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213 "wallclock_thread",
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214 (CYG_ADDRESS)thread_stack,
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215 STACKSIZE
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216 );
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217
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218 th->resume();
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219
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220 // Get the world going
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221 Cyg_Scheduler::scheduler.start();
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222
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223 }
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224
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225 #else // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc...
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226
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227 externC void
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228 cyg_start( void )
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229 {
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230 CYG_TEST_INIT();
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231 CYG_TEST_NA("Kernel real-time clock/threads timer disabled");
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232 }
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233
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234 #endif // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc...
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235
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236 // -------------------------------------------------------------------------
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237 // EOF wallclock.cxx