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annotate packages/compat/posix/current/src/misc.cxx @ 128:0c2b7be0d798 ecos-sw-2000-10-12

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Merge from eCos master repository on 2000-10-12-08:46:24-BST
author jlarmour
date Thu, 12 Oct 2000 20:31:43 +0000
parents 6bd9d475ed4b
children 4c750ce71ae3
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1 //==========================================================================
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2 //
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3 // misc.cxx
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4 //
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5 // POSIX misc function implementations
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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: 2000-07-18
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37 // Purpose: POSIX misc function implementation
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38 // Description: This file contains the implementation of miscellaneous POSIX
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39 // functions that do not belong elsewhere.
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40 //
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41 //
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42 //
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43 //####DESCRIPTIONEND####
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44 //
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45 //==========================================================================
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46
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47 #include <pkgconf/system.h>
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48 #include <pkgconf/hal.h>
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49 #include <pkgconf/kernel.h>
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50 #include <pkgconf/posix.h>
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51
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52 #include <cyg/kernel/ktypes.h> // base kernel types
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53 #include <cyg/infra/cyg_trac.h> // tracing macros
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54 #include <cyg/infra/cyg_ass.h> // assertion macros
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55
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56 #include "pprivate.h" // POSIX private header
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57
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58 #include <unistd.h>
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59 #include <sys/utsname.h> // My header
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60 #include <string.h> // strcpy
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61 #include <limits.h>
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62 #include <time.h>
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63
128
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64 #include <cyg/kernel/sched.hxx>
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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 // -------------------------------------------------------------------------
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69 // Supply some suitable values for constants that may not be present
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70 // in all configurations.
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71
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72 #ifndef MQ_OPEN_MAX
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73 #define MQ_OPEN_MAX 0
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74 #endif
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75 #ifndef MQ_PRIO_MAX
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76 #define MQ_PRIO_MAX 0
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77 #endif
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78
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79 // -------------------------------------------------------------------------
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80
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81 #define __string(_x) #_x
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82 #define __xstring(_x) __string(_x)
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83
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84 // -------------------------------------------------------------------------
128
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85 // uname()
115
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86
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87 __externC int uname( struct utsname *name )
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88 {
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89 CYG_REPORT_FUNCTYPE( "returning %d" );
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90
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91 strcpy( name->sysname, "eCos" );
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92 strcpy( name->nodename, "" ); // should use gethostname()
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93 strcpy( name->release, __xstring( CYGNUM_KERNEL_VERSION_MAJOR ) );
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94 strcpy( name->version, __xstring( CYGNUM_KERNEL_VERSION_MINOR ) );
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95 strcpy( name->machine, "" );
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96
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97 CYG_REPORT_RETVAL(0);
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98 return 0;
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99 }
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100
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101 // -------------------------------------------------------------------------
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102 // sysconf()
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103
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104 #define SC_CASE( _name, _val ) case _name: return _val
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105
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106 __externC long sysconf( int name )
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107 {
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108
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109 switch( name )
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110 {
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111 SC_CASE( _SC_AIO_LISTIO_MAX, AIO_LISTIO_MAX );
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112 SC_CASE( _SC_AIO_MAX, AIO_MAX );
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113 SC_CASE( _SC_AIO_PRIO_DELTA_MAX, AIO_PRIO_DELTA_MAX );
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114 SC_CASE( _SC_ARG_MAX, ARG_MAX );
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115 SC_CASE( _SC_CHILD_MAX, CHILD_MAX );
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116 SC_CASE( _SC_DELAYTIMER_MAX, DELAYTIMER_MAX );
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117 SC_CASE( _SC_GETGR_R_SIZE_MAX, 0 );
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118 SC_CASE( _SC_GETPW_R_SIZE_MAX, 0 );
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119 SC_CASE( _SC_LOGIN_NAME_MAX, LOGIN_NAME_MAX );
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120 SC_CASE( _SC_MQ_OPEN_MAX, MQ_OPEN_MAX );
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121 SC_CASE( _SC_MQ_PRIO_MAX, MQ_PRIO_MAX );
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122 SC_CASE( _SC_NGROUPS_MAX, NGROUPS_MAX );
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123 SC_CASE( _SC_OPEN_MAX, OPEN_MAX );
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124 SC_CASE( _SC_PAGESIZE, PAGESIZE );
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125 SC_CASE( _SC_RTSIG_MAX, RTSIG_MAX );
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126 SC_CASE( _SC_SEM_NSEMS_MAX, SEM_NSEMS_MAX );
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127 SC_CASE( _SC_SEM_VALUE_MAX, SEM_VALUE_MAX );
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128 SC_CASE( _SC_SIGQUEUE_MAX, SIGQUEUE_MAX );
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129 SC_CASE( _SC_STREAM_MAX, STREAM_MAX );
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130 SC_CASE( _SC_THREAD_DESTRUCTOR_ITERATIONS, PTHREAD_DESTRUCTOR_ITERATIONS );
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131 SC_CASE( _SC_THREAD_KEYS_MAX, PTHREAD_KEYS_MAX );
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132 SC_CASE( _SC_THREAD_STACK_MIN, PTHREAD_STACK_MIN );
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133 SC_CASE( _SC_THREAD_THREADS_MAX, PTHREAD_THREADS_MAX );
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134 SC_CASE( _SC_TIMER_MAX, TIMER_MAX );
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135 SC_CASE( _SC_TTY_NAME_MAX, TTY_NAME_MAX );
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136 SC_CASE( _SC_TZNAME_MAX, TZNAME_MAX );
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137 SC_CASE( _SC_VERSION, _POSIX_VERSION );
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parents:
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138
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jlarmour
parents:
diff changeset
139 case _SC_CLK_TCK:
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jlarmour
parents:
diff changeset
140 {
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jlarmour
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141 struct timespec ts;
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142 ts.tv_sec = 1;
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143 ts.tv_nsec = 0;
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144 cyg_tick_count ticks = cyg_timespec_to_ticks( &ts );
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145 return ticks;
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jlarmour
parents:
diff changeset
146 }
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147
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
148 case _SC_ASYNCHRONOUS_IO:
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149 #ifdef _POSIX_ASYNCHRONOUS_IO
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150 return 1;
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151 #else
121
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diff changeset
152 return -1;
115
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153 #endif
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154
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diff changeset
155 case _SC_FSYNC:
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156 #ifdef _POSIX_FSYNC
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157 return 1;
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158 #else
121
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parents: 115
diff changeset
159 return -1;
115
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parents:
diff changeset
160 #endif
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jlarmour
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diff changeset
161
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jlarmour
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diff changeset
162 case _SC_JOB_CONTROL:
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163 #ifdef _POSIX_JOB_CONTROL
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164 return 1;
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diff changeset
165 #else
121
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diff changeset
166 return -1;
115
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diff changeset
167 #endif
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jlarmour
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diff changeset
168
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
169 case _SC_MAPPED_FILES:
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170 #ifdef _POSIX_MAPPED_FILES
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171 return 1;
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172 #else
121
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diff changeset
173 return -1;
115
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174 #endif
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175
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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176 case _SC_MEMLOCK:
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177 #ifdef _POSIX_MEMLOCK
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178 return 1;
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179 #else
121
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diff changeset
180 return -1;
115
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181 #endif
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182
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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183 case _SC_MEMLOCK_RANGE:
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184 #ifdef _POSIX_MEMLOCK_RANGE
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185 return 1;
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186 #else
121
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diff changeset
187 return -1 ;
115
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188 #endif
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189
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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190 case _SC_MEMORY_PROTECTION:
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191 #ifdef _POSIX_MEMORY_PROTECTION
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192 return 1;
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193 #else
121
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diff changeset
194 return -1;
115
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195 #endif
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196
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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197 case _SC_MESSAGE_PASSING:
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198 #ifdef _POSIX_MESSAGE_PASSING
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199 return 1;
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200 #else
121
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diff changeset
201 return -1;
115
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diff changeset
202 #endif
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diff changeset
203
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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204 case _SC_PRIORITIZED_IO:
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205 #ifdef _POSIX_PRIORITIZED_IO
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206 return 1;
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207 #else
121
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diff changeset
208 return -1;
115
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diff changeset
209 #endif
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diff changeset
210
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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211 case _SC_PRIORITY_SCHEDULING:
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212 #ifdef _POSIX_PRIORITY_SCHEDULING
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213 return 1;
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diff changeset
214 #else
121
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diff changeset
215 return -1;
115
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diff changeset
216 #endif
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diff changeset
217
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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218 case _SC_REALTIME_SIGNALS:
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219 #ifdef _POSIX_REALTIME_SIGNALS
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220 return 1;
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diff changeset
221 #else
121
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diff changeset
222 return -1;
115
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diff changeset
223 #endif
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diff changeset
224
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
225 case _SC_SAVED_IDS:
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226 #ifdef _POSIX_SAVED_IDS
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227 return 1;
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diff changeset
228 #else
121
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diff changeset
229 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
230 #endif
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jlarmour
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diff changeset
231
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
232 case _SC_SEMAPHORES:
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233 #ifdef _POSIX_SEMAPHORES
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234 return 1;
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diff changeset
235 #else
121
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diff changeset
236 return -1;
115
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diff changeset
237 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
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diff changeset
238
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
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diff changeset
239 case _SC_SHARED_MEMORY_OBJECTS:
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diff changeset
240 #ifdef _POSIX_SHARED_MEMORY_OBJECTS
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diff changeset
241 return 1;
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diff changeset
242 #else
121
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diff changeset
243 return -1;
115
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diff changeset
244 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
245
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
246 case _SC_SYNCHRONIZED_IO:
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diff changeset
247 #ifdef _POSIX_SYNCHRONIZED_IO
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248 return 1;
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diff changeset
249 #else
121
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diff changeset
250 return -1;
115
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diff changeset
251 #endif
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252
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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253 case _SC_THREADS:
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diff changeset
254 #ifdef _POSIX_THREADS
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255 return 1;
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diff changeset
256 #else
121
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diff changeset
257 return -1;
115
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diff changeset
258 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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259
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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260 case _SC_THREAD_ATTR_STACKADDR:
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261 #ifdef _POSIX_THREAD_ATTR_STACKADDR
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262 return 1;
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diff changeset
263 #else
121
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diff changeset
264 return -1;
115
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diff changeset
265 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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266
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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267 case _SC_THREAD_ATTR_STACKSIZE:
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268 #ifdef _POSIX_THREAD_ATTR_STACKSIZE
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269 return 1;
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diff changeset
270 #else
121
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diff changeset
271 return -1;
115
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272 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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273
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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274 case _SC_THREAD_PRIO_INHERIT:
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275 #ifdef _POSIX_THREAD_PRIO_INHERIT
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276 return 1;
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diff changeset
277 #else
121
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diff changeset
278 return -1;
115
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diff changeset
279 #endif
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280
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
281 case _SC_THREAD_PRIO_PROTECT:
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282 #ifdef _POSIX_THREAD_PRIO_PROTECT
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283 return 1;
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diff changeset
284 #else
121
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diff changeset
285 return -1;
115
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286 #endif
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287
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288 case _SC_THREAD_PRIORITY_SCHEDULING:
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289 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
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290 return 1;
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291 #else
121
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292 return -1;
115
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293 #endif
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294
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295 case _SC_THREAD_PROCESS_SHARED:
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296 #ifdef _POSIX_THREAD_PROCESS_SHARED
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297 return 1;
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298 #else
121
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299 return -1;
115
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300 #endif
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301
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302 case _SC_THREAD_SAFE_FUNCTIONS:
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303 #ifdef _POSIX_THREAD_SAFE_FUNCTIONS
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304 return 1;
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305 #else
121
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306 return -1;
115
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307 #endif
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308
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309 case _SC_TIMERS:
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310 #ifdef _POSIX_TIMERS
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311 return 1;
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312 #else
121
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313 return -1;
115
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314 #endif
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315
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316
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317 default:
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318 errno = EINVAL;
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319 return -1;
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320 }
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321 }
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322
128
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323 //==========================================================================
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324 // Some trivial compatibility functions.
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325 // These are merely present to permit existing code to be ported a little
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326 // more easily, and to provide adequate standards compatibility.
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327
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328 __externC pid_t getpid ( void ) { return 42; }
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329 __externC pid_t getppid ( void ) { return 41; }
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330 __externC uid_t getuid ( void ) { return 666; }
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331 __externC uid_t geteuid ( void ) { return 666; }
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332 __externC gid_t getgid ( void ) { return 88; }
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333 __externC gid_t getegid ( void ) { return 88; }
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334 __externC int setuid ( uid_t uid ) { errno = EPERM; return -1; }
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335 __externC int setgid ( uid_t gid ) { errno = EPERM; return -1; }
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336 __externC int getgroups ( int gidsetsize, gid_t grouplist[] ) { return 0; };
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337 __externC pid_t getpgrp ( void ) { return 42; }
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338 __externC pid_t setsid ( void ) { errno = EPERM; return -1; }
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339 __externC int setpgid ( pid_t pid, pid_t pgid ) { errno = ENOSYS; return -1; }
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340
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341 //==========================================================================
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342 // Exports to other packages
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343
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344 // -------------------------------------------------------------------------
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345 // POSIX API function entry
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346
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347 __externC void cyg_posix_function_start()
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348 {
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349 Cyg_Thread *self = Cyg_Scheduler::get_current_thread();
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350
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351 // Inhibit ASR delivery in this function until it returns.
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352
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353 self->set_asr_inhibit();
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354 }
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355
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356 // -------------------------------------------------------------------------
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357
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358 __externC void cyg_posix_function_finish()
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359 {
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360 Cyg_Thread *self = Cyg_Scheduler::get_current_thread();
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361
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362 // Re-allow ASR delivery.
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363
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364 self->clear_asr_inhibit();
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365
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366 // After clearing the inhibit flag, blip the scheduler lock
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367 // to get any pending ASRs delivered.
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368 Cyg_Scheduler::lock();
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369 Cyg_Scheduler::unlock();
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370 }
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371
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372 // -------------------------------------------------------------------------
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373 // EOF misc.cxx