annotate Python/thread_solaris.h @ 4439:fb1237bf7022 legacy-trunk

Changed version to plain "1.4".
author Guido van Rossum <guido@python.org>
date Tue, 22 Oct 1996 03:09:46 +0000
parents c277ee8c669c
children 65d2d8e67da3
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 The Netherlands.
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4
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5 All Rights Reserved
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6
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI not be used in advertising or publicity pertaining to
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13 distribution of the software without specific, written prior permission.
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14
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15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22
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23 ******************************************************************/
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24
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25 #include <stdlib.h>
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26 #include <stdio.h>
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27 #include <unistd.h>
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28 #include <errno.h>
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29 #include </usr/include/thread.h>
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30 #undef _POSIX_THREADS
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31
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32
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33 /*
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34 * Initialization.
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35 */
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36 static void _init_thread _P0()
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37 {
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38 }
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39
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40 /*
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41 * Thread support.
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42 */
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43 struct func_arg {
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44 void (*func) _P((void *));
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45 void *arg;
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46 };
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47
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48 static void *new_func _P1(funcarg, void *funcarg)
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49 {
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50 void (*func) _P((void *));
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51 void *arg;
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52
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53 func = ((struct func_arg *) funcarg)->func;
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54 arg = ((struct func_arg *) funcarg)->arg;
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55 free(funcarg);
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56 (*func)(arg);
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57 return 0;
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58 }
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59
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60
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61 int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
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62 {
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63 struct func_arg *funcarg;
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64 int success = 0; /* init not needed when SOLARIS_THREADS and */
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65 /* C_THREADS implemented properly */
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66
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67 dprintf(("start_new_thread called\n"));
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68 if (!initialized)
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69 init_thread();
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70 funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
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71 funcarg->func = func;
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72 funcarg->arg = arg;
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73 if (thr_create(0, 0, new_func, funcarg, THR_DETACHED, 0)) {
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74 perror("thr_create");
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75 free((void *) funcarg);
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76 success = -1;
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77 }
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78 return success < 0 ? 0 : 1;
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79 }
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80
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81 long get_thread_ident _P0()
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82 {
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83 if (!initialized)
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84 init_thread();
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85 return thr_self();
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86 }
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87
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88 static void do_exit_thread _P1(no_cleanup, int no_cleanup)
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89 {
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90 dprintf(("exit_thread called\n"));
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91 if (!initialized)
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92 if (no_cleanup)
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93 _exit(0);
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94 else
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95 exit(0);
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96 thr_exit(0);
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97 }
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98
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99 void exit_thread _P0()
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100 {
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101 do_exit_thread(0);
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102 }
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103
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104 void _exit_thread _P0()
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105 {
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106 do_exit_thread(1);
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107 }
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108
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109 #ifndef NO_EXIT_PROG
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110 static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
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111 {
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112 dprintf(("exit_prog(%d) called\n", status));
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113 if (!initialized)
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114 if (no_cleanup)
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115 _exit(status);
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116 else
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117 exit(status);
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118 if (no_cleanup)
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119 _exit(status);
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120 else
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121 exit(status);
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122 }
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123
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124 void exit_prog _P1(status, int status)
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125 {
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126 do_exit_prog(status, 0);
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127 }
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128
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129 void _exit_prog _P1(status, int status)
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130 {
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131 do_exit_prog(status, 1);
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132 }
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133 #endif /* NO_EXIT_PROG */
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134
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135 /*
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136 * Lock support.
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137 */
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138 type_lock allocate_lock _P0()
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139 {
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140 mutex_t *lock;
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141
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142 dprintf(("allocate_lock called\n"));
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143 if (!initialized)
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144 init_thread();
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145
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146 lock = (mutex_t *) malloc(sizeof(mutex_t));
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147 if (mutex_init(lock, USYNC_THREAD, 0)) {
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148 perror("mutex_init");
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149 free((void *) lock);
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150 lock = 0;
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151 }
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152 dprintf(("allocate_lock() -> %lx\n", (long)lock));
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153 return (type_lock) lock;
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154 }
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155
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156 void free_lock _P1(lock, type_lock lock)
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157 {
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158 dprintf(("free_lock(%lx) called\n", (long)lock));
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159 mutex_destroy((mutex_t *) lock);
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160 free((void *) lock);
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161 }
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162
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163 int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
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164 {
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165 int success;
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166
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167 dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
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168 if (waitflag)
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169 success = mutex_lock((mutex_t *) lock);
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170 else
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171 success = mutex_trylock((mutex_t *) lock);
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172 if (success < 0)
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173 perror(waitflag ? "mutex_lock" : "mutex_trylock");
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174 else
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175 success = !success; /* solaris does it the other way round */
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176 dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
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177 return success;
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178 }
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179
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180 void release_lock _P1(lock, type_lock lock)
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181 {
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182 dprintf(("release_lock(%lx) called\n", (long)lock));
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183 if (mutex_unlock((mutex_t *) lock))
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184 perror("mutex_unlock");
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185 }
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186
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187 /*
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188 * Semaphore support.
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189 */
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190 type_sema allocate_sema _P1(value, int value)
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191 {
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192 sema_t *sema;
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193 dprintf(("allocate_sema called\n"));
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194 if (!initialized)
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195 init_thread();
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196
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197 sema = (sema_t *) malloc(sizeof(sema_t));
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198 if (sema_init(sema, value, USYNC_THREAD, 0)) {
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199 perror("sema_init");
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200 free((void *) sema);
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201 sema = 0;
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202 }
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203 dprintf(("allocate_sema() -> %lx\n", (long) sema));
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204 return (type_sema) sema;
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205 }
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206
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207 void free_sema _P1(sema, type_sema sema)
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208 {
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209 dprintf(("free_sema(%lx) called\n", (long) sema));
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210 if (sema_destroy((sema_t *) sema))
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211 perror("sema_destroy");
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212 free((void *) sema);
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213 }
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214
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215 int down_sema _P2(sema, type_sema sema, waitflag, int waitflag)
1628
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216 {
4371
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diff changeset
217 int success;
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diff changeset
218
1628
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219 dprintf(("down_sema(%lx) called\n", (long) sema));
4371
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
220 if (waitflag)
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diff changeset
221 success = sema_wait((sema_t *) sema);
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
222 else
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diff changeset
223 success = sema_trywait((sema_t *) sema);
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diff changeset
224 if (success < 0) {
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Guido van Rossum <guido@python.org>
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diff changeset
225 if (errno == EBUSY)
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diff changeset
226 success = 0;
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diff changeset
227 else
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diff changeset
228 perror("sema_wait");
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
229 }
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
230 else
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diff changeset
231 success = !success;
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
232 dprintf(("down_sema(%lx) return %d\n", (long) sema, success));
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
233 return success;
1628
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diff changeset
234 }
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235
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
236 void up_sema _P1(sema, type_sema sema)
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diff changeset
237 {
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diff changeset
238 dprintf(("up_sema(%lx)\n", (long) sema));
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diff changeset
239 if (sema_post((sema_t *) sema))
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diff changeset
240 perror("sema_post");
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diff changeset
241 }