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annotate lib/pthread.in.h @ 17160:72f4bab621be

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fts: introduce FTS_VERBATIM This gives clients the option to disable stripping of trailing slashes from input path names during fts_open initialization. The recent change v0.0-7611-g3a9002d that made fts_open strip trailing slashes from input path names had a negative impact on findutils that relies on the old fts_open behavior to implement POSIX requirement that each path operand of the find utility shall be evaluated unaltered as it was provided, including all trailing slash characters. * lib/fts_.h (FTS_VERBATIM): New bit flag. (FTS_OPTIONMASK, FTS_NAMEONLY, FTS_STOP): Adjust. * lib/fts.c (fts_open): Honor it.
author Dmitry V. Levin <ldv@altlinux.org>
date Sun, 18 Nov 2012 04:40:18 +0400
parents bb182ee4a09d
children 8b10fbdb551e
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1 /* Implement a trivial subset of POSIX 1003.1-2008 pthread.h.
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2
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3 Copyright (C) 2009-2012 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, see <http://www.gnu.org/licenses/>. */
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17
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18 /* Written by Paul Eggert and Glen Lenker. */
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19
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20 #ifndef _@GUARD_PREFIX@_PTHREAD_H_
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21
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22 #if __GNUC__ >= 3
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23 @PRAGMA_SYSTEM_HEADER@
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24 #endif
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25 @PRAGMA_COLUMNS@
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26
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27 /* The include_next requires a split double-inclusion guard. */
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28 #if @HAVE_PTHREAD_H@
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29 # @INCLUDE_NEXT@ @NEXT_PTHREAD_H@
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30 #endif
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31
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32 #ifndef _@GUARD_PREFIX@_PTHREAD_H_
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33 #define _@GUARD_PREFIX@_PTHREAD_H_
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34
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35 #include <errno.h>
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36 #include <stdlib.h>
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37 #include <sched.h>
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38 #include <sys/types.h>
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39 #include <time.h>
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40
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41 #if ! @HAVE_PTHREAD_T@
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42 # if !GNULIB_defined_pthread_types
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43 typedef int pthread_t;
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44 typedef int pthread_attr_t;
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45 typedef int pthread_barrier_t;
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46 typedef int pthread_barrierattr_t;
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47 typedef int pthread_cond_t;
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48 typedef int pthread_condattr_t;
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49 typedef int pthread_key_t;
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50 typedef int pthread_mutex_t;
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51 typedef int pthread_mutexattr_t;
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52 typedef int pthread_once_t;
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53 typedef int pthread_rwlock_t;
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54 typedef int pthread_rwlockattr_t;
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55 # define GNULIB_defined_pthread_types 1
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56 # endif
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57 #endif
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58
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59 #ifndef PTHREAD_COND_INITIALIZER
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60 #define PTHREAD_COND_INITIALIZER { 0 }
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61 #define PTHREAD_MUTEX_INITIALIZER { 0 }
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62 #define PTHREAD_ONCE_INIT { 0 }
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63 #define PTHREAD_RWLOCK_INITIALIZER { 0 }
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64
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65 #define PTHREAD_BARRIER_SERIAL_THREAD (-1)
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66
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67 #define PTHREAD_CANCEL_DEFERRED 0
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68 #define PTHREAD_CANCEL_ASYNCHRONOUS 1
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69
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70 #define PTHREAD_CANCEL_ENABLE 0
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71 #define PTHREAD_CANCEL_DISABLE 1
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72
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73 #define PTHREAD_CANCELED ((void *) -1)
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74
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75 #define PTHREAD_CREATE_JOINABLE 0
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76 #define PTHREAD_CREATE_DETACHED 1
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77
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78 #define PTHREAD_INHERIT_SCHED 0
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79 #define PTHREAD_EXPLICIT_SCHED 1
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80
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81 #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
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82 #define PTHREAD_MUTEX_NORMAL 0
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83 #define PTHREAD_MUTEX_ERRORCHECK 1
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84 #define PTHREAD_MUTEX_RECURSIVE 2
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85
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86 #define PTHREAD_MUTEX_STALLED 0
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87 #define PTHREAD_MUTEX_ROBUST 1
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88
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89 #define PTHREAD_PRIO_NONE 0
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90 #define PTHREAD_PRIO_INHERIT 1
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91 #define PTHREAD_PRIO_PROTECT 2
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92
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93 #define PTHREAD_PROCESS_PRIVATE 0
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94 #define PTHREAD_PROCESS_SHARED 1
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95
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96 #define PTHREAD_SCOPE_SYSTEM 0
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97 #define PTHREAD_SCOPE_PROCESS 1
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98 #endif
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99
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100 #if ! @HAVE_PTHREAD_T@
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101
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102 # if !GNULIB_defined_pthread_functions
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103
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104 /* Provide substitutes for the thread functions that should work
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105 adequately on a single-threaded implementation, where
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106 pthread_create always fails. The goal is to let programs compile
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107 on non-pthread hosts with minimal runtime overhead.
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108
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109 Omit interfaces that have not been analyzed and for which we do not
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110 know what to do, so that they elicit a compile-time error for
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111 now. */
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112
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113 static inline int
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114 pthread_cond_destroy (pthread_cond_t *cond)
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115 {
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116 /* COND is never seriously used. */
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117 return 0;
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parents: 12559
diff changeset
118 }
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parents: 12559
diff changeset
119
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120 static inline int
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121 pthread_cond_init (pthread_cond_t *restrict cond,
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122 pthread_condattr_t const *restrict attr)
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123 {
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124 /* COND is never seriously used. */
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125 return 0;
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126 }
4a2a6b0eadea New modules nproc, pthread.
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parents:
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127
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128 static inline int
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129 pthread_cond_signal (pthread_cond_t *cond)
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130 {
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131 /* No threads can currently be blocked on COND. */
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132 return 0;
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diff changeset
133 }
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134
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135 static inline int
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136 pthread_cond_wait (pthread_cond_t *restrict cond,
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137 pthread_mutex_t *restrict mutex)
13467
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138 {
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139 /* Properly-written applications never come here. */
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140 abort ();
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141 return 0;
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Paul R. Eggert <eggert@cs.ucla.edu>
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142 }
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143
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144 static inline int
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145 pthread_create (pthread_t *restrict thread,
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146 pthread_attr_t const *restrict attr,
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147 void * (*start_routine) (void*), void *restrict arg)
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148 {
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149 /* Do not create a thread. */
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150 return EAGAIN;
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151 }
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152
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Paul R. Eggert <eggert@cs.ucla.edu>
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153 static inline void
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154 pthread_exit (void *value)
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155 {
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156 /* There is just one thread, so the process exits. */
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157 exit (0);
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158 }
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159
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Paul R. Eggert <eggert@cs.ucla.edu>
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160 static inline int
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161 pthread_join (pthread_t thread, void **pvalue)
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162 {
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163 /* Properly-written applications never come here. */
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164 abort ();
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165 return 0;
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166 }
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167
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168 static inline int
13717
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169 pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
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170 {
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171 return 0;
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172 }
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173
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174 static inline int
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175 pthread_mutexattr_init (pthread_mutexattr_t *attr)
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176 {
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177 return 0;
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Paul Eggert <eggert@cs.ucla.edu>
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178 }
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diff changeset
179
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180 static inline int
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181 pthread_mutexattr_settype (pthread_mutexattr_t *attr, int attr_type)
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182 {
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183 return 0;
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Paul Eggert <eggert@cs.ucla.edu>
parents: 13706
diff changeset
184 }
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185
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186 static inline int
13467
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187 pthread_mutex_destroy (pthread_mutex_t *mutex)
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188 {
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189 /* MUTEX is never seriously used. */
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190 return 0;
11431
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191 }
4a2a6b0eadea New modules nproc, pthread.
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parents:
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192
13467
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193 static inline int
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diff changeset
194 pthread_mutex_init (pthread_mutex_t *restrict mutex,
13479
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195 pthread_mutexattr_t const *restrict attr)
13467
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196 {
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197 /* MUTEX is never seriously used. */
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198 return 0;
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Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
199 }
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diff changeset
200
b3e78c51aab6 pthread: Add enough so that coreutils/src/sort.c compiles.
Paul R. Eggert <eggert@cs.ucla.edu>
parents: 12559
diff changeset
201 static inline int
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Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
202 pthread_mutex_lock (pthread_mutex_t *mutex)
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Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
203 {
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Paul R. Eggert <eggert@cs.ucla.edu>
parents: 12559
diff changeset
204 /* There is only one thread, so it always gets the lock. This
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Paul R. Eggert <eggert@cs.ucla.edu>
parents: 12559
diff changeset
205 implementation does not support PTHREAD_MUTEX_ERRORCHECK. */
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206 return 0;
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Paul R. Eggert <eggert@cs.ucla.edu>
parents: 12559
diff changeset
207 }
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Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
208
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Paul R. Eggert <eggert@cs.ucla.edu>
parents: 12559
diff changeset
209 static inline int
13717
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210 pthread_mutex_trylock (pthread_mutex_t *mutex)
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diff changeset
211 {
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Paul Eggert <eggert@cs.ucla.edu>
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212 return pthread_mutex_lock (mutex);
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Paul Eggert <eggert@cs.ucla.edu>
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diff changeset
213 }
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diff changeset
214
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Paul Eggert <eggert@cs.ucla.edu>
parents: 13706
diff changeset
215 static inline int
13467
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diff changeset
216 pthread_mutex_unlock (pthread_mutex_t *mutex)
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diff changeset
217 {
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diff changeset
218 /* There is only one thread, so it always unlocks successfully.
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diff changeset
219 This implementation does not support robust mutexes or
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diff changeset
220 PTHREAD_MUTEX_ERRORCHECK. */
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diff changeset
221 return 0;
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Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
222 }
b3e78c51aab6 pthread: Add enough so that coreutils/src/sort.c compiles.
Paul R. Eggert <eggert@cs.ucla.edu>
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diff changeset
223
14274
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diff changeset
224 # define GNULIB_defined_pthread_functions 1
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225 # endif
da5595160b9f Allow multiple gnulib generated replacements to coexist.
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226
13717
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227 #endif
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228
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229 #if ! @HAVE_PTHREAD_SPINLOCK_T@
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230
14274
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diff changeset
231 # if !GNULIB_defined_pthread_spinlock_t
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232
13717
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233 /* Approximate spinlocks with mutexes. */
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234
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diff changeset
235 typedef pthread_mutex_t pthread_spinlock_t;
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236
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237 static inline int
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diff changeset
238 pthread_spin_init (pthread_spinlock_t *lock, int pshared)
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diff changeset
239 {
13717
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240 return pthread_mutex_init (lock, NULL);
13467
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241 }
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242
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243 static inline int
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244 pthread_spin_destroy (pthread_spinlock_t *lock)
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245 {
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246 return pthread_mutex_destroy (lock);
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247 }
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248
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249 static inline int
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250 pthread_spin_lock (pthread_spinlock_t *lock)
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251 {
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252 return pthread_mutex_lock (lock);
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253 }
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254
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255 static inline int
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256 pthread_spin_trylock (pthread_spinlock_t *lock)
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257 {
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258 return pthread_mutex_trylock (lock);
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259 }
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260
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261 static inline int
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262 pthread_spin_unlock (pthread_spinlock_t *lock)
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263 {
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264 return pthread_mutex_unlock (lock);
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265 }
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266
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267 # define GNULIB_defined_pthread_spinlock_t 1
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268 # endif
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269
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270 #endif
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271
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272 #endif /* _@GUARD_PREFIX@_PTHREAD_H_ */
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273 #endif /* _@GUARD_PREFIX@_PTHREAD_H_ */