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0
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1 /* Threads compatibility routines for libgcc2 and libobjc. */
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2 /* Compile this one with gcc. */
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3 /* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
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4 2008, 2009 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 Under Section 7 of GPL version 3, you are granted additional
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19 permissions described in the GCC Runtime Library Exception, version
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20 3.1, as published by the Free Software Foundation.
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21
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22 You should have received a copy of the GNU General Public License and
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23 a copy of the GCC Runtime Library Exception along with this program;
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24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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25 <http://www.gnu.org/licenses/>. */
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26
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27 #ifndef GCC_GTHR_POSIX_H
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28 #define GCC_GTHR_POSIX_H
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29
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30 /* POSIX threads specific definitions.
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31 Easy, since the interface is just one-to-one mapping. */
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32
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33 #define __GTHREADS 1
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34 #define __GTHREADS_CXX0X 1
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35
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36 /* Some implementations of <pthread.h> require this to be defined. */
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37 #if !defined(_REENTRANT) && defined(__osf__)
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38 #define _REENTRANT 1
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39 #endif
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40
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41 #include <pthread.h>
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42 #include <unistd.h>
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43
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44 typedef pthread_t __gthread_t;
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45 typedef pthread_key_t __gthread_key_t;
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46 typedef pthread_once_t __gthread_once_t;
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47 typedef pthread_mutex_t __gthread_mutex_t;
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48 typedef pthread_mutex_t __gthread_recursive_mutex_t;
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49 typedef pthread_cond_t __gthread_cond_t;
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50 typedef struct timespec __gthread_time_t;
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51
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52 /* POSIX like conditional variables are supported. Please look at comments
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53 in gthr.h for details. */
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54 #define __GTHREAD_HAS_COND 1
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55
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56 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
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57 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
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58 #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
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59 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
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60 #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
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61 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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62 #else
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63 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
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64 #endif
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65 #define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER
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66 #define __GTHREAD_TIME_INIT {0,0}
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67
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68 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
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69 # ifndef __gthrw_pragma
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70 # define __gthrw_pragma(pragma)
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71 # endif
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72 # define __gthrw2(name,name2,type) \
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73 static __typeof(type) name __attribute__ ((__weakref__(#name2))); \
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74 __gthrw_pragma(weak type)
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75 # define __gthrw_(name) __gthrw_ ## name
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76 #else
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77 # define __gthrw2(name,name2,type)
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78 # define __gthrw_(name) name
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79 #endif
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80
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81 /* Typically, __gthrw_foo is a weak reference to symbol foo. */
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82 #define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name)
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83
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84 /* On Tru64, /usr/include/pthread.h uses #pragma extern_prefix "__" to
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85 map a subset of the POSIX pthread API to mangled versions of their
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86 names. */
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87 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_)
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88 #define __gthrw3(name) __gthrw2(__gthrw_ ## name, __ ## name, name)
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89 __gthrw3(pthread_once)
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90 __gthrw3(pthread_getspecific)
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91 __gthrw3(pthread_setspecific)
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92
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93 __gthrw3(pthread_create)
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94 __gthrw3(pthread_join)
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95 __gthrw3(pthread_detach)
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96 __gthrw3(pthread_equal)
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97 __gthrw3(pthread_self)
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98 __gthrw3(pthread_cancel)
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99 __gthrw3(sched_yield)
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100
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101 __gthrw3(pthread_mutex_lock)
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102 __gthrw3(pthread_mutex_trylock)
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103 #ifdef _POSIX_TIMEOUTS
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104 #if _POSIX_TIMEOUTS >= 0
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105 __gthrw3(pthread_mutex_timedlock)
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106 #endif
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107 #endif /* _POSIX_TIMEOUTS */
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108 __gthrw3(pthread_mutex_unlock)
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109 __gthrw3(pthread_mutex_init)
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110 __gthrw3(pthread_mutex_destroy)
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111
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112 __gthrw3(pthread_cond_broadcast)
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113 __gthrw3(pthread_cond_signal)
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114 __gthrw3(pthread_cond_wait)
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115 __gthrw3(pthread_cond_timedwait)
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116 __gthrw3(pthread_cond_destroy)
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117 #else
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118 __gthrw(pthread_once)
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119 __gthrw(pthread_getspecific)
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120 __gthrw(pthread_setspecific)
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121
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122 __gthrw(pthread_create)
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123 __gthrw(pthread_join)
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124 __gthrw(pthread_equal)
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125 __gthrw(pthread_self)
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126 __gthrw(pthread_detach)
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127 __gthrw(pthread_cancel)
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128 __gthrw(sched_yield)
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129
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130 __gthrw(pthread_mutex_lock)
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131 __gthrw(pthread_mutex_trylock)
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132 #ifdef _POSIX_TIMEOUTS
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133 #if _POSIX_TIMEOUTS >= 0
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134 __gthrw(pthread_mutex_timedlock)
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135 #endif
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136 #endif /* _POSIX_TIMEOUTS */
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137 __gthrw(pthread_mutex_unlock)
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138 __gthrw(pthread_mutex_init)
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139 __gthrw(pthread_mutex_destroy)
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140
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141 __gthrw(pthread_cond_broadcast)
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142 __gthrw(pthread_cond_signal)
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143 __gthrw(pthread_cond_wait)
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144 __gthrw(pthread_cond_timedwait)
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145 __gthrw(pthread_cond_destroy)
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146 #endif
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147
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148 __gthrw(pthread_key_create)
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149 __gthrw(pthread_key_delete)
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150 __gthrw(pthread_mutexattr_init)
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151 __gthrw(pthread_mutexattr_settype)
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152 __gthrw(pthread_mutexattr_destroy)
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153
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154
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155 #if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
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156 /* Objective-C. */
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157 #if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_)
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158 __gthrw3(pthread_cond_init)
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159 __gthrw3(pthread_exit)
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160 #else
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161 __gthrw(pthread_cond_init)
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162 __gthrw(pthread_exit)
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163 #endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */
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164 #ifdef _POSIX_PRIORITY_SCHEDULING
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165 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
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166 __gthrw(sched_get_priority_max)
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167 __gthrw(sched_get_priority_min)
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168 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
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169 #endif /* _POSIX_PRIORITY_SCHEDULING */
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170 __gthrw(pthread_attr_destroy)
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171 __gthrw(pthread_attr_init)
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172 __gthrw(pthread_attr_setdetachstate)
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173 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
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174 __gthrw(pthread_getschedparam)
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175 __gthrw(pthread_setschedparam)
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176 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
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177 #endif /* _LIBOBJC || _LIBOBJC_WEAK */
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178
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179 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
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180
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181 /* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
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182 -pthreads is not specified. The functions are dummies and most return an
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183 error value. However pthread_once returns 0 without invoking the routine
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184 it is passed so we cannot pretend that the interface is active if -pthreads
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185 is not specified. On Solaris 2.5.1, the interface is not exposed at all so
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186 we need to play the usual game with weak symbols. On Solaris 10 and up, a
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187 working interface is always exposed. On FreeBSD 6 and later, libc also
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188 exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up
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189 to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc,
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190 which means the alternate __gthread_active_p below cannot be used there. */
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191
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192 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
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193
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194 static volatile int __gthread_active = -1;
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195
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196 static void
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197 __gthread_trigger (void)
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198 {
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199 __gthread_active = 1;
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200 }
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201
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202 static inline int
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203 __gthread_active_p (void)
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204 {
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205 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
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206 static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
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207
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208 /* Avoid reading __gthread_active twice on the main code path. */
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209 int __gthread_active_latest_value = __gthread_active;
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210
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211 /* This test is not protected to avoid taking a lock on the main code
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212 path so every update of __gthread_active in a threaded program must
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213 be atomic with regard to the result of the test. */
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214 if (__builtin_expect (__gthread_active_latest_value < 0, 0))
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215 {
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216 if (__gthrw_(pthread_once))
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217 {
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218 /* If this really is a threaded program, then we must ensure that
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219 __gthread_active has been set to 1 before exiting this block. */
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220 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
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221 __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
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222 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
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223 }
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224
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225 /* Make sure we'll never enter this block again. */
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226 if (__gthread_active < 0)
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227 __gthread_active = 0;
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228
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229 __gthread_active_latest_value = __gthread_active;
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230 }
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231
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232 return __gthread_active_latest_value != 0;
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233 }
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234
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235 #else /* neither FreeBSD nor Solaris */
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236
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237 static inline int
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238 __gthread_active_p (void)
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239 {
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240 static void *const __gthread_active_ptr
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241 = __extension__ (void *) &__gthrw_(pthread_cancel);
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242 return __gthread_active_ptr != 0;
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243 }
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244
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245 #endif /* FreeBSD or Solaris */
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246
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247 #else /* not SUPPORTS_WEAK */
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248
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249 /* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread
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250 calls in shared flavors of the HP-UX C library. Most of the stubs
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251 have no functionality. The details are described in the "libc cumulative
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252 patch" for each subversion of HP-UX 11. There are two special interfaces
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253 provided for checking whether an application is linked to a pthread
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254 library or not. However, these interfaces aren't available in early
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255 libc versions. We also can't use pthread_once as some libc versions
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256 call the init function. So, we use pthread_create to check whether it
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257 is possible to create a thread or not. The stub implementation returns
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258 the error number ENOSYS. */
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259
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260 #if defined(__hppa__) && defined(__hpux__)
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261
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262 #include <errno.h>
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263
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264 static volatile int __gthread_active = -1;
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265
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266 static void *
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267 __gthread_start (void *__arg __attribute__((unused)))
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268 {
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269 return NULL;
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270 }
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271
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272 static void __gthread_active_init (void) __attribute__((noinline));
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273 static void
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274 __gthread_active_init (void)
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275 {
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276 static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
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277 pthread_t __t;
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278 pthread_attr_t __a;
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279 int __result;
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280
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281 __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
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282 if (__gthread_active < 0)
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283 {
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284 __gthrw_(pthread_attr_init) (&__a);
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285 __gthrw_(pthread_attr_setdetachstate) (&__a, PTHREAD_CREATE_DETACHED);
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286 __result = __gthrw_(pthread_create) (&__t, &__a, __gthread_start, NULL);
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287 if (__result != ENOSYS)
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288 __gthread_active = 1;
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289 else
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290 __gthread_active = 0;
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291 __gthrw_(pthread_attr_destroy) (&__a);
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292 }
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293 __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
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294 }
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295
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296 static inline int
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297 __gthread_active_p (void)
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298 {
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299 /* Avoid reading __gthread_active twice on the main code path. */
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300 int __gthread_active_latest_value = __gthread_active;
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301
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302 /* This test is not protected to avoid taking a lock on the main code
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303 path so every update of __gthread_active in a threaded program must
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304 be atomic with regard to the result of the test. */
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305 if (__builtin_expect (__gthread_active_latest_value < 0, 0))
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306 {
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307 __gthread_active_init ();
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308 __gthread_active_latest_value = __gthread_active;
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309 }
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310
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311 return __gthread_active_latest_value != 0;
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312 }
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313
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314 #else /* not hppa-hpux */
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315
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316 static inline int
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317 __gthread_active_p (void)
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318 {
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319 return 1;
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320 }
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321
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322 #endif /* hppa-hpux */
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323
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324 #endif /* SUPPORTS_WEAK */
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325
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326 #ifdef _LIBOBJC
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327
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328 /* This is the config.h file in libobjc/ */
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329 #include <config.h>
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330
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331 #ifdef HAVE_SCHED_H
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332 # include <sched.h>
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333 #endif
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334
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335 /* Key structure for maintaining thread specific storage */
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336 static pthread_key_t _objc_thread_storage;
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337 static pthread_attr_t _objc_thread_attribs;
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338
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339 /* Thread local storage for a single thread */
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340 static void *thread_local_storage = NULL;
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341
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342 /* Backend initialization functions */
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343
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344 /* Initialize the threads subsystem. */
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345 static inline int
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346 __gthread_objc_init_thread_system (void)
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347 {
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348 if (__gthread_active_p ())
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349 {
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350 /* Initialize the thread storage key. */
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351 if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
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352 {
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353 /* The normal default detach state for threads is
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354 * PTHREAD_CREATE_JOINABLE which causes threads to not die
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355 * when you think they should. */
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356 if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
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357 && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
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358 PTHREAD_CREATE_DETACHED) == 0)
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359 return 0;
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360 }
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361 }
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362
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363 return -1;
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364 }
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365
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366 /* Close the threads subsystem. */
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367 static inline int
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368 __gthread_objc_close_thread_system (void)
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369 {
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370 if (__gthread_active_p ()
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371 && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
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372 && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
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373 return 0;
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374
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375 return -1;
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376 }
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377
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378 /* Backend thread functions */
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379
|
|
|
380 /* Create a new thread of execution. */
|
|
|
381 static inline objc_thread_t
|
|
|
382 __gthread_objc_thread_detach (void (*func)(void *), void *arg)
|
|
|
383 {
|
|
|
384 objc_thread_t thread_id;
|
|
|
385 pthread_t new_thread_handle;
|
|
|
386
|
|
|
387 if (!__gthread_active_p ())
|
|
|
388 return NULL;
|
|
|
389
|
|
|
390 if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
|
|
|
391 thread_id = (objc_thread_t) new_thread_handle;
|
|
|
392 else
|
|
|
393 thread_id = NULL;
|
|
|
394
|
|
|
395 return thread_id;
|
|
|
396 }
|
|
|
397
|
|
|
398 /* Set the current thread's priority. */
|
|
|
399 static inline int
|
|
|
400 __gthread_objc_thread_set_priority (int priority)
|
|
|
401 {
|
|
|
402 if (!__gthread_active_p ())
|
|
|
403 return -1;
|
|
|
404 else
|
|
|
405 {
|
|
|
406 #ifdef _POSIX_PRIORITY_SCHEDULING
|
|
|
407 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
|
|
408 pthread_t thread_id = __gthrw_(pthread_self) ();
|
|
|
409 int policy;
|
|
|
410 struct sched_param params;
|
|
|
411 int priority_min, priority_max;
|
|
|
412
|
|
|
413 if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0)
|
|
|
414 {
|
|
|
415 if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
|
|
|
416 return -1;
|
|
|
417
|
|
|
418 if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
|
|
|
419 return -1;
|
|
|
420
|
|
|
421 if (priority > priority_max)
|
|
|
422 priority = priority_max;
|
|
|
423 else if (priority < priority_min)
|
|
|
424 priority = priority_min;
|
|
|
425 params.sched_priority = priority;
|
|
|
426
|
|
|
427 /*
|
|
|
428 * The solaris 7 and several other man pages incorrectly state that
|
|
|
429 * this should be a pointer to policy but pthread.h is universally
|
|
|
430 * at odds with this.
|
|
|
431 */
|
|
|
432 if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0)
|
|
|
433 return 0;
|
|
|
434 }
|
|
|
435 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
|
|
436 #endif /* _POSIX_PRIORITY_SCHEDULING */
|
|
|
437 return -1;
|
|
|
438 }
|
|
|
439 }
|
|
|
440
|
|
|
441 /* Return the current thread's priority. */
|
|
|
442 static inline int
|
|
|
443 __gthread_objc_thread_get_priority (void)
|
|
|
444 {
|
|
|
445 #ifdef _POSIX_PRIORITY_SCHEDULING
|
|
|
446 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
|
|
447 if (__gthread_active_p ())
|
|
|
448 {
|
|
|
449 int policy;
|
|
|
450 struct sched_param params;
|
|
|
451
|
|
|
452 if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0)
|
|
|
453 return params.sched_priority;
|
|
|
454 else
|
|
|
455 return -1;
|
|
|
456 }
|
|
|
457 else
|
|
|
458 #endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
|
|
459 #endif /* _POSIX_PRIORITY_SCHEDULING */
|
|
|
460 return OBJC_THREAD_INTERACTIVE_PRIORITY;
|
|
|
461 }
|
|
|
462
|
|
|
463 /* Yield our process time to another thread. */
|
|
|
464 static inline void
|
|
|
465 __gthread_objc_thread_yield (void)
|
|
|
466 {
|
|
|
467 if (__gthread_active_p ())
|
|
|
468 __gthrw_(sched_yield) ();
|
|
|
469 }
|
|
|
470
|
|
|
471 /* Terminate the current thread. */
|
|
|
472 static inline int
|
|
|
473 __gthread_objc_thread_exit (void)
|
|
|
474 {
|
|
|
475 if (__gthread_active_p ())
|
|
|
476 /* exit the thread */
|
|
|
477 __gthrw_(pthread_exit) (&__objc_thread_exit_status);
|
|
|
478
|
|
|
479 /* Failed if we reached here */
|
|
|
480 return -1;
|
|
|
481 }
|
|
|
482
|
|
|
483 /* Returns an integer value which uniquely describes a thread. */
|
|
|
484 static inline objc_thread_t
|
|
|
485 __gthread_objc_thread_id (void)
|
|
|
486 {
|
|
|
487 if (__gthread_active_p ())
|
|
|
488 return (objc_thread_t) __gthrw_(pthread_self) ();
|
|
|
489 else
|
|
|
490 return (objc_thread_t) 1;
|
|
|
491 }
|
|
|
492
|
|
|
493 /* Sets the thread's local storage pointer. */
|
|
|
494 static inline int
|
|
|
495 __gthread_objc_thread_set_data (void *value)
|
|
|
496 {
|
|
|
497 if (__gthread_active_p ())
|
|
|
498 return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
|
|
|
499 else
|
|
|
500 {
|
|
|
501 thread_local_storage = value;
|
|
|
502 return 0;
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
|
506 /* Returns the thread's local storage pointer. */
|
|
|
507 static inline void *
|
|
|
508 __gthread_objc_thread_get_data (void)
|
|
|
509 {
|
|
|
510 if (__gthread_active_p ())
|
|
|
511 return __gthrw_(pthread_getspecific) (_objc_thread_storage);
|
|
|
512 else
|
|
|
513 return thread_local_storage;
|
|
|
514 }
|
|
|
515
|
|
|
516 /* Backend mutex functions */
|
|
|
517
|
|
|
518 /* Allocate a mutex. */
|
|
|
519 static inline int
|
|
|
520 __gthread_objc_mutex_allocate (objc_mutex_t mutex)
|
|
|
521 {
|
|
|
522 if (__gthread_active_p ())
|
|
|
523 {
|
|
|
524 mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
|
|
|
525
|
|
|
526 if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
|
|
|
527 {
|
|
|
528 objc_free (mutex->backend);
|
|
|
529 mutex->backend = NULL;
|
|
|
530 return -1;
|
|
|
531 }
|
|
|
532 }
|
|
|
533
|
|
|
534 return 0;
|
|
|
535 }
|
|
|
536
|
|
|
537 /* Deallocate a mutex. */
|
|
|
538 static inline int
|
|
|
539 __gthread_objc_mutex_deallocate (objc_mutex_t mutex)
|
|
|
540 {
|
|
|
541 if (__gthread_active_p ())
|
|
|
542 {
|
|
|
543 int count;
|
|
|
544
|
|
|
545 /*
|
|
|
546 * Posix Threads specifically require that the thread be unlocked
|
|
|
547 * for __gthrw_(pthread_mutex_destroy) to work.
|
|
|
548 */
|
|
|
549
|
|
|
550 do
|
|
|
551 {
|
|
|
552 count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
|
|
|
553 if (count < 0)
|
|
|
554 return -1;
|
|
|
555 }
|
|
|
556 while (count);
|
|
|
557
|
|
|
558 if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
|
|
|
559 return -1;
|
|
|
560
|
|
|
561 objc_free (mutex->backend);
|
|
|
562 mutex->backend = NULL;
|
|
|
563 }
|
|
|
564 return 0;
|
|
|
565 }
|
|
|
566
|
|
|
567 /* Grab a lock on a mutex. */
|
|
|
568 static inline int
|
|
|
569 __gthread_objc_mutex_lock (objc_mutex_t mutex)
|
|
|
570 {
|
|
|
571 if (__gthread_active_p ()
|
|
|
572 && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
|
|
|
573 {
|
|
|
574 return -1;
|
|
|
575 }
|
|
|
576
|
|
|
577 return 0;
|
|
|
578 }
|
|
|
579
|
|
|
580 /* Try to grab a lock on a mutex. */
|
|
|
581 static inline int
|
|
|
582 __gthread_objc_mutex_trylock (objc_mutex_t mutex)
|
|
|
583 {
|
|
|
584 if (__gthread_active_p ()
|
|
|
585 && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
|
|
|
586 {
|
|
|
587 return -1;
|
|
|
588 }
|
|
|
589
|
|
|
590 return 0;
|
|
|
591 }
|
|
|
592
|
|
|
593 /* Unlock the mutex */
|
|
|
594 static inline int
|
|
|
595 __gthread_objc_mutex_unlock (objc_mutex_t mutex)
|
|
|
596 {
|
|
|
597 if (__gthread_active_p ()
|
|
|
598 && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
|
|
|
599 {
|
|
|
600 return -1;
|
|
|
601 }
|
|
|
602
|
|
|
603 return 0;
|
|
|
604 }
|
|
|
605
|
|
|
606 /* Backend condition mutex functions */
|
|
|
607
|
|
|
608 /* Allocate a condition. */
|
|
|
609 static inline int
|
|
|
610 __gthread_objc_condition_allocate (objc_condition_t condition)
|
|
|
611 {
|
|
|
612 if (__gthread_active_p ())
|
|
|
613 {
|
|
|
614 condition->backend = objc_malloc (sizeof (pthread_cond_t));
|
|
|
615
|
|
|
616 if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
|
|
|
617 {
|
|
|
618 objc_free (condition->backend);
|
|
|
619 condition->backend = NULL;
|
|
|
620 return -1;
|
|
|
621 }
|
|
|
622 }
|
|
|
623
|
|
|
624 return 0;
|
|
|
625 }
|
|
|
626
|
|
|
627 /* Deallocate a condition. */
|
|
|
628 static inline int
|
|
|
629 __gthread_objc_condition_deallocate (objc_condition_t condition)
|
|
|
630 {
|
|
|
631 if (__gthread_active_p ())
|
|
|
632 {
|
|
|
633 if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
|
|
|
634 return -1;
|
|
|
635
|
|
|
636 objc_free (condition->backend);
|
|
|
637 condition->backend = NULL;
|
|
|
638 }
|
|
|
639 return 0;
|
|
|
640 }
|
|
|
641
|
|
|
642 /* Wait on the condition */
|
|
|
643 static inline int
|
|
|
644 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
|
|
|
645 {
|
|
|
646 if (__gthread_active_p ())
|
|
|
647 return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
|
|
|
648 (pthread_mutex_t *) mutex->backend);
|
|
|
649 else
|
|
|
650 return 0;
|
|
|
651 }
|
|
|
652
|
|
|
653 /* Wake up all threads waiting on this condition. */
|
|
|
654 static inline int
|
|
|
655 __gthread_objc_condition_broadcast (objc_condition_t condition)
|
|
|
656 {
|
|
|
657 if (__gthread_active_p ())
|
|
|
658 return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
|
|
|
659 else
|
|
|
660 return 0;
|
|
|
661 }
|
|
|
662
|
|
|
663 /* Wake up one thread waiting on this condition. */
|
|
|
664 static inline int
|
|
|
665 __gthread_objc_condition_signal (objc_condition_t condition)
|
|
|
666 {
|
|
|
667 if (__gthread_active_p ())
|
|
|
668 return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
|
|
|
669 else
|
|
|
670 return 0;
|
|
|
671 }
|
|
|
672
|
|
|
673 #else /* _LIBOBJC */
|
|
|
674
|
|
|
675 static inline int
|
|
|
676 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*),
|
|
|
677 void *__args)
|
|
|
678 {
|
|
|
679 return __gthrw_(pthread_create) (__threadid, NULL, __func, __args);
|
|
|
680 }
|
|
|
681
|
|
|
682 static inline int
|
|
|
683 __gthread_join (__gthread_t __threadid, void **__value_ptr)
|
|
|
684 {
|
|
|
685 return __gthrw_(pthread_join) (__threadid, __value_ptr);
|
|
|
686 }
|
|
|
687
|
|
|
688 static inline int
|
|
|
689 __gthread_detach (__gthread_t __threadid)
|
|
|
690 {
|
|
|
691 return __gthrw_(pthread_detach) (__threadid);
|
|
|
692 }
|
|
|
693
|
|
|
694 static inline int
|
|
|
695 __gthread_equal (__gthread_t __t1, __gthread_t __t2)
|
|
|
696 {
|
|
|
697 return __gthrw_(pthread_equal) (__t1, __t2);
|
|
|
698 }
|
|
|
699
|
|
|
700 static inline __gthread_t
|
|
|
701 __gthread_self (void)
|
|
|
702 {
|
|
|
703 return __gthrw_(pthread_self) ();
|
|
|
704 }
|
|
|
705
|
|
|
706 static inline int
|
|
|
707 __gthread_yield (void)
|
|
|
708 {
|
|
|
709 return __gthrw_(sched_yield) ();
|
|
|
710 }
|
|
|
711
|
|
|
712 static inline int
|
|
|
713 __gthread_once (__gthread_once_t *__once, void (*__func) (void))
|
|
|
714 {
|
|
|
715 if (__gthread_active_p ())
|
|
|
716 return __gthrw_(pthread_once) (__once, __func);
|
|
|
717 else
|
|
|
718 return -1;
|
|
|
719 }
|
|
|
720
|
|
|
721 static inline int
|
|
|
722 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
|
|
|
723 {
|
|
|
724 return __gthrw_(pthread_key_create) (__key, __dtor);
|
|
|
725 }
|
|
|
726
|
|
|
727 static inline int
|
|
|
728 __gthread_key_delete (__gthread_key_t __key)
|
|
|
729 {
|
|
|
730 return __gthrw_(pthread_key_delete) (__key);
|
|
|
731 }
|
|
|
732
|
|
|
733 static inline void *
|
|
|
734 __gthread_getspecific (__gthread_key_t __key)
|
|
|
735 {
|
|
|
736 return __gthrw_(pthread_getspecific) (__key);
|
|
|
737 }
|
|
|
738
|
|
|
739 static inline int
|
|
|
740 __gthread_setspecific (__gthread_key_t __key, const void *__ptr)
|
|
|
741 {
|
|
|
742 return __gthrw_(pthread_setspecific) (__key, __ptr);
|
|
|
743 }
|
|
|
744
|
|
|
745 static inline int
|
|
|
746 __gthread_mutex_destroy (__gthread_mutex_t *__mutex)
|
|
|
747 {
|
|
|
748 if (__gthread_active_p ())
|
|
|
749 return __gthrw_(pthread_mutex_destroy) (__mutex);
|
|
|
750 else
|
|
|
751 return 0;
|
|
|
752 }
|
|
|
753
|
|
|
754 static inline int
|
|
|
755 __gthread_mutex_lock (__gthread_mutex_t *__mutex)
|
|
|
756 {
|
|
|
757 if (__gthread_active_p ())
|
|
|
758 return __gthrw_(pthread_mutex_lock) (__mutex);
|
|
|
759 else
|
|
|
760 return 0;
|
|
|
761 }
|
|
|
762
|
|
|
763 static inline int
|
|
|
764 __gthread_mutex_trylock (__gthread_mutex_t *__mutex)
|
|
|
765 {
|
|
|
766 if (__gthread_active_p ())
|
|
|
767 return __gthrw_(pthread_mutex_trylock) (__mutex);
|
|
|
768 else
|
|
|
769 return 0;
|
|
|
770 }
|
|
|
771
|
|
|
772 #ifdef _POSIX_TIMEOUTS
|
|
|
773 #if _POSIX_TIMEOUTS >= 0
|
|
|
774 static inline int
|
|
|
775 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
|
|
|
776 const __gthread_time_t *__abs_timeout)
|
|
|
777 {
|
|
|
778 if (__gthread_active_p ())
|
|
|
779 return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout);
|
|
|
780 else
|
|
|
781 return 0;
|
|
|
782 }
|
|
|
783 #endif
|
|
|
784 #endif
|
|
|
785
|
|
|
786 static inline int
|
|
|
787 __gthread_mutex_unlock (__gthread_mutex_t *__mutex)
|
|
|
788 {
|
|
|
789 if (__gthread_active_p ())
|
|
|
790 return __gthrw_(pthread_mutex_unlock) (__mutex);
|
|
|
791 else
|
|
|
792 return 0;
|
|
|
793 }
|
|
|
794
|
|
|
795 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
|
|
|
796 static inline int
|
|
|
797 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
|
|
|
798 {
|
|
|
799 if (__gthread_active_p ())
|
|
|
800 {
|
|
|
801 pthread_mutexattr_t __attr;
|
|
|
802 int __r;
|
|
|
803
|
|
|
804 __r = __gthrw_(pthread_mutexattr_init) (&__attr);
|
|
|
805 if (!__r)
|
|
|
806 __r = __gthrw_(pthread_mutexattr_settype) (&__attr,
|
|
|
807 PTHREAD_MUTEX_RECURSIVE);
|
|
|
808 if (!__r)
|
|
|
809 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr);
|
|
|
810 if (!__r)
|
|
|
811 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr);
|
|
|
812 return __r;
|
|
|
813 }
|
|
|
814 return 0;
|
|
|
815 }
|
|
|
816 #endif
|
|
|
817
|
|
|
818 static inline int
|
|
|
819 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
|
|
|
820 {
|
|
|
821 return __gthread_mutex_lock (__mutex);
|
|
|
822 }
|
|
|
823
|
|
|
824 static inline int
|
|
|
825 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
|
|
|
826 {
|
|
|
827 return __gthread_mutex_trylock (__mutex);
|
|
|
828 }
|
|
|
829
|
|
|
830 #ifdef _POSIX_TIMEOUTS
|
|
|
831 #if _POSIX_TIMEOUTS >= 0
|
|
|
832 static inline int
|
|
|
833 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
|
|
|
834 const __gthread_time_t *__abs_timeout)
|
|
|
835 {
|
|
|
836 return __gthread_mutex_timedlock (__mutex, __abs_timeout);
|
|
|
837 }
|
|
|
838 #endif
|
|
|
839 #endif
|
|
|
840
|
|
|
841 static inline int
|
|
|
842 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
|
|
|
843 {
|
|
|
844 return __gthread_mutex_unlock (__mutex);
|
|
|
845 }
|
|
|
846
|
|
|
847 static inline int
|
|
|
848 __gthread_cond_broadcast (__gthread_cond_t *__cond)
|
|
|
849 {
|
|
|
850 return __gthrw_(pthread_cond_broadcast) (__cond);
|
|
|
851 }
|
|
|
852
|
|
|
853 static inline int
|
|
|
854 __gthread_cond_signal (__gthread_cond_t *__cond)
|
|
|
855 {
|
|
|
856 return __gthrw_(pthread_cond_signal) (__cond);
|
|
|
857 }
|
|
|
858
|
|
|
859 static inline int
|
|
|
860 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
|
|
|
861 {
|
|
|
862 return __gthrw_(pthread_cond_wait) (__cond, __mutex);
|
|
|
863 }
|
|
|
864
|
|
|
865 static inline int
|
|
|
866 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex,
|
|
|
867 const __gthread_time_t *__abs_timeout)
|
|
|
868 {
|
|
|
869 return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout);
|
|
|
870 }
|
|
|
871
|
|
|
872 static inline int
|
|
|
873 __gthread_cond_wait_recursive (__gthread_cond_t *__cond,
|
|
|
874 __gthread_recursive_mutex_t *__mutex)
|
|
|
875 {
|
|
|
876 return __gthread_cond_wait (__cond, __mutex);
|
|
|
877 }
|
|
|
878
|
|
|
879 static inline int
|
|
|
880 __gthread_cond_timedwait_recursive (__gthread_cond_t *__cond,
|
|
|
881 __gthread_recursive_mutex_t *__mutex,
|
|
|
882 const __gthread_time_t *__abs_timeout)
|
|
|
883 {
|
|
|
884 return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout);
|
|
|
885 }
|
|
|
886
|
|
|
887 static inline int
|
|
|
888 __gthread_cond_destroy (__gthread_cond_t* __cond)
|
|
|
889 {
|
|
|
890 return __gthrw_(pthread_cond_destroy) (__cond);
|
|
|
891 }
|
|
|
892
|
|
|
893 #endif /* _LIBOBJC */
|
|
|
894
|
|
|
895 #endif /* ! GCC_GTHR_POSIX_H */
|
