Mercurial > ecos-v3_0-branch
annotate packages/isoinfra/current/include/limits.h @ 115:6ed91473a1cd ecos-sw-2000-08-21
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| author | jlarmour |
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| date | Fri, 25 Aug 2000 17:32:38 +0000 |
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| children | 0ec04793409a |
| rev | line source |
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1 #ifndef CYGONCE_ISO_LIMITS_H |
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2 #define CYGONCE_ISO_LIMITS_H |
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3 /*======================================================================== |
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4 // |
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5 // limits.h |
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6 // |
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7 // ISO standard limits |
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8 // |
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9 //======================================================================== |
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10 //####COPYRIGHTBEGIN#### |
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11 // |
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12 // ------------------------------------------- |
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13 // The contents of this file are subject to the Red Hat eCos Public License |
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14 // Version 1.1 (the "License"); you may not use this file except in |
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15 // compliance with the License. You may obtain a copy of the License at |
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16 // http://www.redhat.com/ |
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17 // |
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18 // Software distributed under the License is distributed on an "AS IS" |
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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20 // License for the specific language governing rights and limitations under |
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21 // the License. |
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22 // |
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23 // The Original Code is eCos - Embedded Configurable Operating System, |
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24 // released September 30, 1998. |
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25 // |
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26 // The Initial Developer of the Original Code is Red Hat. |
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27 // Portions created by Red Hat are |
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28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
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29 // All Rights Reserved. |
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30 // ------------------------------------------- |
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31 // |
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32 //####COPYRIGHTEND#### |
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33 //======================================================================== |
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34 //#####DESCRIPTIONBEGIN#### |
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35 // |
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36 // Author(s): jlarmour |
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37 // Contributors: |
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38 // Date: 2000-04-14 |
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39 // Purpose: This file provides the limits properties |
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40 // required by ISO C and POSIX 1003.1 |
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41 // Description: The real contents of this file get set from the |
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42 // configuration (set by the implementation), as well as |
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43 // being partially provided by the compiler. |
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44 // |
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45 // Usage: #include <limits.h> |
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46 // |
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47 //####DESCRIPTIONEND#### |
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48 // |
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49 //====================================================================== |
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50 */ |
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51 |
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52 /* CONFIGURATION */ |
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53 |
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54 #include <pkgconf/isoinfra.h> /* Configuration header */ |
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55 |
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56 /* DEFINES */ |
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57 |
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58 /*----------------------------------------------------------------------------- |
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59 * Minimum values from POSIX.1 tables 2-3, 2-7 and 2-7a. |
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60 |
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61 * These are the standard-mandated minimum values. |
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62 * These values do not vary with the implementation - they may |
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63 * simply be defined |
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64 */ |
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65 |
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66 /* Minimum number of operations in one list I/O call. */ |
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67 #define _POSIX_AIO_LISTIO_MAX 2 |
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68 |
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69 /* Minimal number of outstanding asynchronous I/O operations. */ |
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70 #define _POSIX_AIO_MAX 1 |
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71 |
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72 /* Maximum length of arguments to `execve', including environment. */ |
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73 #define _POSIX_ARG_MAX 4096 |
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74 |
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75 /* Maximum simultaneous processes per real user ID. */ |
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76 #define _POSIX_CHILD_MAX 6 |
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77 |
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78 /* Minimal number of timer expiration overruns. */ |
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79 #define _POSIX_DELAYTIMER_MAX 32 |
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80 |
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81 /* Maximum link count of a file. */ |
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82 #define _POSIX_LINK_MAX 8 |
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83 |
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84 /* Size of storage required for a login name */ |
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85 #define _POSIX_LOGIN_NAME_MAX 9 |
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86 |
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87 /* Number of bytes in a terminal canonical input queue. */ |
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88 #define _POSIX_MAX_CANON 255 |
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89 |
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90 /* Number of bytes for which space will be |
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91 available in a terminal input queue. */ |
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92 #define _POSIX_MAX_INPUT 255 |
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93 |
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94 /* Maximum number of message queues open for a process. */ |
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95 #define _POSIX_MQ_OPEN_MAX 8 |
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96 |
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97 /* Maximum number of supported message priorities. */ |
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98 #define _POSIX_MQ_PRIO_MAX 32 |
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99 |
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100 /* Number of bytes in a filename. */ |
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101 #define _POSIX_NAME_MAX 14 |
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102 |
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103 /* Number of simultaneous supplementary group IDs per process. */ |
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104 #define _POSIX_NGROUPS_MAX 0 |
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105 |
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106 /* Number of files one process can have open at once. */ |
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107 #define _POSIX_OPEN_MAX 16 |
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108 |
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109 /* Number of bytes in a pathname. */ |
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110 #define _POSIX_PATH_MAX 255 |
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111 |
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112 /* Number of bytes than can be written atomically to a pipe. */ |
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113 #define _POSIX_PIPE_BUF 512 |
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114 |
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115 /* Minimal number of realtime signals reserved for the application. */ |
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116 #define _POSIX_RTSIG_MAX 8 |
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117 |
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118 /* Number of semaphores a process can have. */ |
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119 #define _POSIX_SEM_NSEMS_MAX 256 |
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120 |
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121 /* Maximal value of a semaphore. */ |
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122 #define _POSIX_SEM_VALUE_MAX 32767 |
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123 |
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124 /* Number of pending realtime signals. */ |
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125 #define _POSIX_SIGQUEUE_MAX 32 |
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126 |
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127 /* Largest value of a `ssize_t'. */ |
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128 #define _POSIX_SSIZE_MAX 32767 |
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129 |
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130 /* Number of streams a process can have open at once. */ |
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131 #define _POSIX_STREAM_MAX 8 |
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132 |
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133 /* Controlling the iterations of destructors for thread-specific data. */ |
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134 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 |
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135 |
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136 /* The number of data keys per process. */ |
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137 #define _POSIX_THREAD_KEYS_MAX 128 |
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138 |
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139 /* The number of threads per process. */ |
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140 #define _POSIX_THREAD_THREADS_MAX 64 |
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141 |
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142 /* Maximum number of characters in a tty name. */ |
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143 #define _POSIX_TTY_NAME_MAX 9 |
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144 |
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145 /* Number of timer for a process. */ |
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146 #define _POSIX_TIMER_MAX 32 |
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147 |
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148 /* Maximum length of a timezone name (element of `tzname'). */ |
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149 #define _POSIX_TZNAME_MAX 3 |
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150 |
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151 /* Maximum clock resolution in nanoseconds. */ |
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152 #define _POSIX_CLOCKRES_MIN 20000000 |
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153 |
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154 |
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155 #ifdef CYGBLD_ISO_SSIZET_HEADER |
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156 # include CYGBLD_ISO_SSIZET_HEADER |
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157 #else |
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158 # ifndef __STRICT_ANSI__ |
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159 # define SSIZE_MAX LONG_MAX |
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160 # endif |
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161 #endif |
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162 |
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163 /* INCLUDES */ |
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164 |
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165 #if CYGINT_ISO_POSIX_LIMITS |
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166 # ifdef CYGBLD_ISO_POSIX_LIMITS_HEADER |
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167 # include CYGBLD_ISO_POSIX_LIMITS_HEADER |
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168 # endif |
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169 #endif |
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170 |
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171 #include_next <limits.h> |
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172 |
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173 #endif /* CYGONCE_ISO_LIMITS_H multiple inclusion protection */ |
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174 |
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175 /* EOF limits.h */ |
