Mercurial > cpython-lru_cache-weakref

annotate Python/thread_solaris.h @ 20737:00a581bdedeb legacy-trunk

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When overriding __str__ or __repr__, set the tp_print slot to NULL.
author Guido van Rossum <guido@python.org>
date Mon, 29 Oct 2001 14:33:44 +0000
parents ebfd87e87884
children c64fc56f6072
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1
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2 #include <stdlib.h>
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3 #include <stdio.h>
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4 #include <unistd.h>
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c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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5 #include <errno.h>
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6 #include </usr/include/thread.h>
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7 #undef _POSIX_THREADS
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9
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10 /*
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11 * Initialization.
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12 */
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13 static void PyThread__init_thread(void)
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14 {
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15 }
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16
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17 /*
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18 * Thread support.
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19 */
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20 struct func_arg {
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21 void (*func)(void *);
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22 void *arg;
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23 };
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24
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25 static void *
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26 new_func(void *funcarg)
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27 {
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28 void (*func)(void *);
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29 void *arg;
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31 func = ((struct func_arg *) funcarg)->func;
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32 arg = ((struct func_arg *) funcarg)->arg;
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33 free(funcarg);
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34 (*func)(arg);
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35 return 0;
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36 }
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38
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39 long
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40 PyThread_start_new_thread(void (*func)(void *), void *arg)
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41 {
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42 thread_t tid;
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43 struct func_arg *funcarg;
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44 int success = 0; /* init not needed when SOLARIS_THREADS and */
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45 /* C_THREADS implemented properly */
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46
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47 dprintf(("PyThread_start_new_thread called\n"));
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48 if (!initialized)
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49 PyThread_init_thread();
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50 funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
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51 funcarg->func = func;
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52 funcarg->arg = arg;
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53 if (thr_create(0, 0, new_func, funcarg,
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54 THR_DETACHED | THR_NEW_LWP, &tid)) {
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55 perror("thr_create");
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56 free((void *) funcarg);
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57 success = -1;
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58 }
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59 return tid;
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60 }
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61
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62 long
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63 PyThread_get_thread_ident(void)
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64 {
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65 if (!initialized)
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66 PyThread_init_thread();
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67 return thr_self();
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68 }
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69
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70 static void
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71 do_PyThread_exit_thread(int no_cleanup)
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72 {
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73 dprintf(("PyThread_exit_thread called\n"));
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74 if (!initialized)
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75 if (no_cleanup)
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76 _exit(0);
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77 else
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78 exit(0);
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79 thr_exit(0);
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80 }
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81
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82 void
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83 PyThread_exit_thread(void)
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84 {
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85 do_PyThread_exit_thread(0);
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86 }
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87
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88 void
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89 PyThread__exit_thread(void)
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90 {
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91 do_PyThread_exit_thread(1);
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92 }
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93
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94 #ifndef NO_EXIT_PROG
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95 static void
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96 do_PyThread_exit_prog(int status, int no_cleanup)
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97 {
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98 dprintf(("PyThread_exit_prog(%d) called\n", status));
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99 if (!initialized)
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100 if (no_cleanup)
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101 _exit(status);
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102 else
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103 exit(status);
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104 if (no_cleanup)
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105 _exit(status);
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106 else
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107 exit(status);
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108 }
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109
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110 void
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111 PyThread_exit_prog(int status)
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112 {
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113 do_PyThread_exit_prog(status, 0);
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114 }
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115
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116 void
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117 PyThread__exit_prog(int status)
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118 {
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119 do_PyThread_exit_prog(status, 1);
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120 }
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121 #endif /* NO_EXIT_PROG */
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122
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123 /*
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124 * Lock support.
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125 */
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126 PyThread_type_lock
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127 PyThread_allocate_lock(void)
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128 {
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129 mutex_t *lock;
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130
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131 dprintf(("PyThread_allocate_lock called\n"));
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132 if (!initialized)
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133 PyThread_init_thread();
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134
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135 lock = (mutex_t *) malloc(sizeof(mutex_t));
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136 if (mutex_init(lock, USYNC_THREAD, 0)) {
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137 perror("mutex_init");
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138 free((void *) lock);
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139 lock = 0;
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140 }
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141 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
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142 return (PyThread_type_lock) lock;
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143 }
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144
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145 void
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146 PyThread_free_lock(PyThread_type_lock lock)
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147 {
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148 dprintf(("PyThread_free_lock(%p) called\n", lock));
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149 mutex_destroy((mutex_t *) lock);
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150 free((void *) lock);
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151 }
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152
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153 int
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154 PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
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155 {
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156 int success;
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157
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158 dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
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159 if (waitflag)
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160 success = mutex_lock((mutex_t *) lock);
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161 else
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162 success = mutex_trylock((mutex_t *) lock);
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163 if (success < 0)
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164 perror(waitflag ? "mutex_lock" : "mutex_trylock");
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165 else
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166 success = !success; /* solaris does it the other way round */
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167 dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
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168 return success;
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169 }
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170
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171 void
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172 PyThread_release_lock(PyThread_type_lock lock)
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173 {
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174 dprintf(("PyThread_release_lock(%p) called\n", lock));
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175 if (mutex_unlock((mutex_t *) lock))
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176 perror("mutex_unlock");
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177 }
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178
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179 /*
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180 * Semaphore support.
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181 */
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182 PyThread_type_sema
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183 PyThread_allocate_sema(int value)
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184 {
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185 sema_t *sema;
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186 dprintf(("PyThread_allocate_sema called\n"));
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187 if (!initialized)
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188 PyThread_init_thread();
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189
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190 sema = (sema_t *) malloc(sizeof(sema_t));
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191 if (sema_init(sema, value, USYNC_THREAD, 0)) {
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192 perror("sema_init");
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193 free((void *) sema);
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194 sema = 0;
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195 }
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196 dprintf(("PyThread_allocate_sema() -> %p\n", sema));
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197 return (PyThread_type_sema) sema;
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198 }
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199
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200 void
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201 PyThread_free_sema(PyThread_type_sema sema)
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202 {
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203 dprintf(("PyThread_free_sema(%p) called\n", sema));
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204 if (sema_destroy((sema_t *) sema))
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205 perror("sema_destroy");
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206 free((void *) sema);
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207 }
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208
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209 int
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210 PyThread_down_sema(PyThread_type_sema sema, int waitflag)
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211 {
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212 int success;
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diff changeset
213
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214 dprintf(("PyThread_down_sema(%p) called\n", sema));
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215 if (waitflag)
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diff changeset
216 success = sema_wait((sema_t *) sema);
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diff changeset
217 else
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diff changeset
218 success = sema_trywait((sema_t *) sema);
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diff changeset
219 if (success < 0) {
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diff changeset
220 if (errno == EBUSY)
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diff changeset
221 success = 0;
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diff changeset
222 else
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
223 perror("sema_wait");
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diff changeset
224 }
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
Guido van Rossum <guido@python.org>
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diff changeset
225 else
c277ee8c669c Sjoerd's thread changes (including down_sema typo fix).
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diff changeset
226 success = !success;
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227 dprintf(("PyThread_down_sema(%p) return %d\n", sema, success));
4371
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diff changeset
228 return success;
1628
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229 }
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230
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231 void
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232 PyThread_up_sema(PyThread_type_sema sema)
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233 {
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234 dprintf(("PyThread_up_sema(%p)\n", sema));
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diff changeset
235 if (sema_post((sema_t *) sema))
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diff changeset
236 perror("sema_post");
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Guido van Rossum <guido@python.org>
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diff changeset
237 }