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annotate packages/kernel/current/include/test/stackmon.h @ 1094:68e9fbe50ee5

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Correct stack usage detection for stack checking configurations.
author bartv
date Sun, 06 Jul 2003 14:35:36 +0000
parents c030434df232
children 74dbf4c3f2e1
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1 #ifndef CYGONCE_KERNEL_TEST_STACKMON_H
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2 #define CYGONCE_KERNEL_TEST_STACKMON_H
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3
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4 /*=================================================================
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5 //
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6 // stackmon.h
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7 //
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8 // Auxiliary test header file
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9 //
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10 //==========================================================================
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11 //####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 // for more details.
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24 //
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25 // You should have received a copy of the GNU General Public License along
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26 // with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use macros
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30 // or inline functions from this file, or you compile this file and link it
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31 // with other works to produce a work based on this file, this file does not
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32 // by itself cause the resulting work to be covered by the GNU General Public
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33 // License. However the source code for this file must still be made available
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34 // in accordance with section (3) of the GNU General Public License.
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35 //
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36 // This exception does not invalidate any other reasons why a work based on
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37 // this file might be covered by the GNU General Public License.
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38 //
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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40 // at http://sources.redhat.com/ecos/ecos-license/
208
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41 // -------------------------------------------
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42 //####ECOSGPLCOPYRIGHTEND####
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43 //==========================================================================
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44 //#####DESCRIPTIONBEGIN####
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45 //
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46 // Author(s): hmt
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47 // Contributors: hmt
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48 // Date: 1999-05-20
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49 // Description:
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50 // Defines some convenience functions for stack use output.
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51 // Note:
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52 // The functions are defined for both C and C++ usage - with different
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53 // argument types.
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54 //
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55 //####DESCRIPTIONEND####
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56 */
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57
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58 #include <pkgconf/system.h>
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59 #include <pkgconf/hal.h>
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60 #include <cyg/hal/hal_arch.h>
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61 #include <cyg/hal/hal_intr.h>
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62 #include <cyg/infra/cyg_type.h>
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63 #ifdef CYGPKG_KERNEL
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64 #include <pkgconf/kernel.h>
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65 # if defined(CYGFUN_KERNEL_API_C)
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66 # include <cyg/kernel/kapi.h>
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67 # endif
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68 # if defined(__cplusplus)
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69 # include <cyg/kernel/sched.hxx>
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70 # include <cyg/kernel/thread.hxx>
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71 # include <cyg/kernel/thread.inl>
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72 # endif
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73 # include <cyg/kernel/smp.hxx>
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74 #endif
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75
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76 #ifndef STACKMON_PRINTF
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77 #include <cyg/infra/diag.h>
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78 #define STACKMON_PRINTF diag_printf
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79 #endif
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80
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81 // ------------------------------------------------------------------------
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82 // Utility function for actually counting a stack
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83
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84 inline void cyg_test_size_a_stack( char *comment, char *format,
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85 char *base, char *top )
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86 {
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87 #ifdef CYGFUN_KERNEL_THREADS_STACK_CHECKING
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88 cyg_uint32* cur32 = (cyg_uint32*) ((((CYG_ADDRWORD)&(base[CYGNUM_KERNEL_THREADS_STACK_CHECK_DATA_SIZE])) + 3) & ~3);
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89 cyg_uint32* top32 = (cyg_uint32*) ((((CYG_ADDRWORD)top) + 3) & ~3);
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90 for ( ; cur32 < top32; cur32++) {
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91 if (*cur32 != 0xDEADBEEF) {
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92 break;
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93 }
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94 }
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95 STACKMON_PRINTF( format, comment, (CYG_ADDRWORD)top32 - (CYG_ADDRWORD)cur32, top - base );
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96 #else
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97 register char *p;
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98 for ( p = base; p < top; p++ )
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99 if ( *p )
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100 break;
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101 STACKMON_PRINTF( format, comment, top - p, top - base );
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102 #endif
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103 }
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104
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105 // ------------------------------------------------------------------------
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106
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107 inline void cyg_test_dump_stack_stats( char *comment,
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108 char *base, char *top )
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109 {
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110 cyg_test_size_a_stack( comment, "%31s : stack used %5d size %5d\n",
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111 base, top );
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112 }
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113
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114 // ------------------------------------------------------------------------
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115
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116 #ifdef __cplusplus
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117
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118 inline void cyg_test_dump_thread_stack_stats( char *comment,
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119 Cyg_Thread *p )
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120 {
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121 #if defined(CYGPKG_KERNEL)
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122 char *base, *top;
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123 base = (char *)p->get_stack_base();
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124 top = base + p->get_stack_size();
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125 cyg_test_dump_stack_stats( comment, base, top );
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126 #endif
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127 }
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128
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129 #else // __cplusplus
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130
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131 inline void cyg_test_dump_thread_stack_stats( char *comment,
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132 cyg_handle_t p )
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133 {
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134 #if defined(CYGPKG_KERNEL) && defined(CYGFUN_KERNEL_API_C)
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135 char *base, *top;
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136 base = (char *) cyg_thread_get_stack_base( p );
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137 top = base + cyg_thread_get_stack_size( p );
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138 cyg_test_dump_stack_stats( comment, base, top );
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139 #endif
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140 }
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141
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142 #endif // __cplusplus
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143
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144 // ------------------------------------------------------------------------
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145 // Print out size of idle thread stack usage since start-of-time. Only
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146 // meaningful if there is a scheduler.
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147
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148 #ifdef __cplusplus
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149
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150 inline void cyg_test_dump_idlethread_stack_stats( char *comment )
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151 {
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152 #if defined(CYGPKG_KERNEL)
177
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153 int i;
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154 extern Cyg_Thread idle_thread[CYGNUM_KERNEL_CPU_MAX];
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155 for( i = 0; i < CYGNUM_KERNEL_CPU_MAX; i++ )
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156 {
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157 // idle thread is not really a plain CygThread; danger.
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158 char *ibase = (char *)idle_thread[i].get_stack_base();
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159 char *istack = ibase + idle_thread[i].get_stack_size();
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160 cyg_test_size_a_stack( comment,
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161 "%20s : Idlethread stack used %5d size %5d\n",
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162 ibase, istack );
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163 }
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164 #endif
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165 }
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166
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167 #else // __cplusplus
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168
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169 inline void cyg_test_dump_idlethread_stack_stats( char *comment )
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170 {
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171 #if defined(CYGPKG_KERNEL) && defined(CYGFUN_KERNEL_API_C)
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172 cyg_handle_t idle_thread = cyg_thread_idle_thread();
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173
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174 char *ibase = (char *)cyg_thread_get_stack_base( idle_thread );
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175 char *istack = ibase + cyg_thread_get_stack_size( idle_thread );
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176 cyg_test_size_a_stack( comment,
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177 "%20s : Idlethread stack used %5d size %5d\n",
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178 ibase, istack );
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179 #endif
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180 }
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181
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182 #endif // __cplusplus
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183
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184 // ------------------------------------------------------------------------
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185 // Print out size of interrupt stack usage since start-of-time or since it
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186 // was last cleared. NB on some architectures and configurations, the
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187 // interrupt stack is the same as the bootup stack, so clear it in the
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188 // first first thread to execute. Clearing it before scheduler start would
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189 // be fatal!
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190
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191 #if defined(HAL_INTERRUPT_STACK_BASE) && defined(HAL_INTERRUPT_STACK_TOP)
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192 externC char HAL_INTERRUPT_STACK_BASE[];
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193 externC char HAL_INTERRUPT_STACK_TOP[];
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194 #endif
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195
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196 inline void cyg_test_dump_interrupt_stack_stats( char *comment )
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197 {
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198 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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199 #if defined(HAL_INTERRUPT_STACK_BASE) && defined(HAL_INTERRUPT_STACK_TOP)
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200 cyg_test_size_a_stack( comment,
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201 "%20s : Interrupt stack used %5d size %5d\n",
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202 HAL_INTERRUPT_STACK_BASE, HAL_INTERRUPT_STACK_TOP );
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203 #endif
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204 #endif
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205 }
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206
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207 // Clear interrupt stack to reset stats - only after sched has started.
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208
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209 inline void cyg_test_clear_interrupt_stack( void )
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210 {
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211 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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212 #if defined(HAL_INTERRUPT_STACK_BASE) && defined(HAL_INTERRUPT_STACK_TOP)
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213 cyg_uint32 old_intr;
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214 HAL_DISABLE_INTERRUPTS(old_intr);
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215 # ifdef CYGFUN_KERNEL_THREADS_STACK_CHECKING
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216 {
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217 cyg_uint32* cur32 = (cyg_uint32*) ((((CYG_ADDRWORD)HAL_INTERRUPT_STACK_BASE) + 3) & ~3);
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218 cyg_uint32* top32 = (cyg_uint32*) ((((CYG_ADDRWORD)HAL_INTERRUPT_STACK_TOP) + 3) & ~3);
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219 for ( ; cur32 < top32; cur32++) {
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220 *cur32 = 0xDEADBEEF;
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221 }
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222 }
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223 # else
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224 {
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225 register char *p;
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226 for ( p = HAL_INTERRUPT_STACK_BASE; p < HAL_INTERRUPT_STACK_TOP; p++ )
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227 *p = 0; // zero it for checking later
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228 }
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229 # endif
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230 HAL_RESTORE_INTERRUPTS(old_intr);
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231 #endif
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232 #endif
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233 }
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234
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235 // ------------------------------------------------------------------------
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236
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237 #endif // ifndef CYGONCE_KERNEL_TEST_STACKMON_H
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238
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239 // EOF stackmon.h