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annotate Python/thread_solaris.h @ 6719:faebc1940432 legacy-trunk

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author Guido van Rossum <guido@python.org>
date Tue, 02 Dec 1997 20:38:11 +0000
parents 65d2d8e67da3
children 877d23bd5bdc
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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 or Corporation for National Research Initiatives or
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13 CNRI not be used in advertising or publicity pertaining to
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14 distribution of the software without specific, written prior
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15 permission.
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16
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17 While CWI is the initial source for this software, a modified version
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18 is made available by the Corporation for National Research Initiatives
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19 (CNRI) at the Internet address ftp://ftp.python.org.
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20
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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28 PERFORMANCE OF THIS SOFTWARE.
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29
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30 ******************************************************************/
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31
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32 #include <stdlib.h>
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33 #include <stdio.h>
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34 #include <unistd.h>
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35 #include <errno.h>
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36 #include </usr/include/thread.h>
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37 #undef _POSIX_THREADS
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38
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39
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40 /*
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41 * Initialization.
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42 */
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43 static void _init_thread _P0()
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44 {
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45 }
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46
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47 /*
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48 * Thread support.
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49 */
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50 struct func_arg {
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51 void (*func) _P((void *));
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52 void *arg;
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53 };
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54
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55 static void *new_func _P1(funcarg, void *funcarg)
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56 {
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57 void (*func) _P((void *));
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58 void *arg;
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59
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60 func = ((struct func_arg *) funcarg)->func;
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61 arg = ((struct func_arg *) funcarg)->arg;
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62 free(funcarg);
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63 (*func)(arg);
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64 return 0;
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65 }
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66
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67
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68 int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg)
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69 {
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70 struct func_arg *funcarg;
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71 int success = 0; /* init not needed when SOLARIS_THREADS and */
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72 /* C_THREADS implemented properly */
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73
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74 dprintf(("start_new_thread called\n"));
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75 if (!initialized)
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76 init_thread();
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77 funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
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78 funcarg->func = func;
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79 funcarg->arg = arg;
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80 if (thr_create(0, 0, new_func, funcarg, THR_DETACHED, 0)) {
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81 perror("thr_create");
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82 free((void *) funcarg);
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83 success = -1;
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84 }
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85 return success < 0 ? 0 : 1;
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86 }
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87
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88 long get_thread_ident _P0()
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89 {
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90 if (!initialized)
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91 init_thread();
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92 return thr_self();
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93 }
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94
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95 static void do_exit_thread _P1(no_cleanup, int no_cleanup)
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96 {
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97 dprintf(("exit_thread called\n"));
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98 if (!initialized)
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99 if (no_cleanup)
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100 _exit(0);
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101 else
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102 exit(0);
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103 thr_exit(0);
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104 }
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105
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106 void exit_thread _P0()
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107 {
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108 do_exit_thread(0);
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109 }
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110
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111 void _exit_thread _P0()
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112 {
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113 do_exit_thread(1);
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114 }
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115
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116 #ifndef NO_EXIT_PROG
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117 static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup)
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118 {
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119 dprintf(("exit_prog(%d) called\n", status));
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120 if (!initialized)
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121 if (no_cleanup)
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122 _exit(status);
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123 else
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124 exit(status);
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125 if (no_cleanup)
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126 _exit(status);
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127 else
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128 exit(status);
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129 }
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130
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131 void exit_prog _P1(status, int status)
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132 {
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133 do_exit_prog(status, 0);
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134 }
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135
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136 void _exit_prog _P1(status, int status)
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137 {
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138 do_exit_prog(status, 1);
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139 }
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140 #endif /* NO_EXIT_PROG */
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141
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142 /*
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143 * Lock support.
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144 */
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145 type_lock allocate_lock _P0()
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146 {
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147 mutex_t *lock;
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148
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149 dprintf(("allocate_lock called\n"));
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150 if (!initialized)
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151 init_thread();
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152
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153 lock = (mutex_t *) malloc(sizeof(mutex_t));
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154 if (mutex_init(lock, USYNC_THREAD, 0)) {
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155 perror("mutex_init");
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156 free((void *) lock);
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157 lock = 0;
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158 }
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159 dprintf(("allocate_lock() -> %lx\n", (long)lock));
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160 return (type_lock) lock;
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161 }
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162
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163 void free_lock _P1(lock, type_lock lock)
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164 {
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165 dprintf(("free_lock(%lx) called\n", (long)lock));
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166 mutex_destroy((mutex_t *) lock);
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167 free((void *) lock);
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168 }
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169
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170 int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag)
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171 {
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172 int success;
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173
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174 dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
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175 if (waitflag)
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176 success = mutex_lock((mutex_t *) lock);
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177 else
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178 success = mutex_trylock((mutex_t *) lock);
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179 if (success < 0)
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180 perror(waitflag ? "mutex_lock" : "mutex_trylock");
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181 else
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182 success = !success; /* solaris does it the other way round */
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183 dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
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184 return success;
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185 }
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186
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187 void release_lock _P1(lock, type_lock lock)
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188 {
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189 dprintf(("release_lock(%lx) called\n", (long)lock));
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190 if (mutex_unlock((mutex_t *) lock))
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191 perror("mutex_unlock");
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192 }
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193
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194 /*
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195 * Semaphore support.
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196 */
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197 type_sema allocate_sema _P1(value, int value)
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198 {
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199 sema_t *sema;
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200 dprintf(("allocate_sema called\n"));
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diff changeset
201 if (!initialized)
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202 init_thread();
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203
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204 sema = (sema_t *) malloc(sizeof(sema_t));
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205 if (sema_init(sema, value, USYNC_THREAD, 0)) {
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diff changeset
206 perror("sema_init");
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diff changeset
207 free((void *) sema);
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208 sema = 0;
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209 }
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210 dprintf(("allocate_sema() -> %lx\n", (long) sema));
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diff changeset
211 return (type_sema) sema;
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diff changeset
212 }
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213
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214 void free_sema _P1(sema, type_sema sema)
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215 {
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216 dprintf(("free_sema(%lx) called\n", (long) sema));
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217 if (sema_destroy((sema_t *) sema))
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diff changeset
218 perror("sema_destroy");
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diff changeset
219 free((void *) sema);
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diff changeset
220 }
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221
4371
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diff changeset
222 int down_sema _P2(sema, type_sema sema, waitflag, int waitflag)
1628
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diff changeset
223 {
4371
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
224 int success;
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
225
1628
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diff changeset
226 dprintf(("down_sema(%lx) called\n", (long) sema));
4371
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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parents: 4143
diff changeset
227 if (waitflag)
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
228 success = sema_wait((sema_t *) sema);
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
229 else
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
230 success = sema_trywait((sema_t *) sema);
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
231 if (success < 0) {
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
232 if (errno == EBUSY)
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
233 success = 0;
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
234 else
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
235 perror("sema_wait");
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
236 }
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
237 else
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
238 success = !success;
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
parents: 4143
diff changeset
239 dprintf(("down_sema(%lx) return %d\n", (long) sema, success));
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
240 return success;
1628
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diff changeset
241 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
242
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
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diff changeset
243 void up_sema _P1(sema, type_sema sema)
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diff changeset
244 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
245 dprintf(("up_sema(%lx)\n", (long) sema));
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parents:
diff changeset
246 if (sema_post((sema_t *) sema))
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Guido van Rossum <guido@python.org>
parents:
diff changeset
247 perror("sema_post");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
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diff changeset
248 }