Mercurial > cpython-lru_cache-weakref

annotate Python/thread_solaris.h @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents b36cb4602e21
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 <errno.h>
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5 #include </usr/include/thread.h>
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6 #undef _POSIX_THREADS
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7
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8
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9 /*
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10 * Initialization.
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11 */
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12 static void PyThread__init_thread(void)
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13 {
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14 }
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15
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16 /*
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17 * Thread support.
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18 */
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19 struct func_arg {
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20 void (*func)(void *);
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21 void *arg;
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22 };
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23
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24 static void *
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25 new_func(void *funcarg)
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26 {
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27 void (*func)(void *);
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28 void *arg;
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29
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30 func = ((struct func_arg *) funcarg)->func;
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31 arg = ((struct func_arg *) funcarg)->arg;
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32 free(funcarg);
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33 (*func)(arg);
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34 return 0;
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35 }
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37
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38 long
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39 PyThread_start_new_thread(void (*func)(void *), void *arg)
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40 {
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41 thread_t tid;
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42 struct func_arg *funcarg;
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43
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44 dprintf(("PyThread_start_new_thread called\n"));
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45 if (!initialized)
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46 PyThread_init_thread();
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47 funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
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48 funcarg->func = func;
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49 funcarg->arg = arg;
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50 if (thr_create(0, 0, new_func, funcarg,
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51 THR_DETACHED | THR_NEW_LWP, &tid)) {
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52 perror("thr_create");
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53 free((void *) funcarg);
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54 return -1;
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55 }
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56 return tid;
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57 }
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58
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59 long
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60 PyThread_get_thread_ident(void)
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61 {
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62 if (!initialized)
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63 PyThread_init_thread();
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64 return thr_self();
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65 }
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66
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67 void
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68 PyThread_exit_thread(void)
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69 {
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70 dprintf(("PyThread_exit_thread called\n"));
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71 if (!initialized)
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72 exit(0);
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73 thr_exit(0);
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74 }
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75
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76 /*
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77 * Lock support.
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78 */
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79 PyThread_type_lock
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80 PyThread_allocate_lock(void)
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81 {
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82 mutex_t *lock;
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83
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84 dprintf(("PyThread_allocate_lock called\n"));
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85 if (!initialized)
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86 PyThread_init_thread();
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87
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88 lock = (mutex_t *) malloc(sizeof(mutex_t));
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89 if (mutex_init(lock, USYNC_THREAD, 0)) {
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90 perror("mutex_init");
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91 free((void *) lock);
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92 lock = 0;
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93 }
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94 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
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95 return (PyThread_type_lock) lock;
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96 }
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97
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98 void
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99 PyThread_free_lock(PyThread_type_lock lock)
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100 {
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101 dprintf(("PyThread_free_lock(%p) called\n", lock));
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102 mutex_destroy((mutex_t *) lock);
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103 free((void *) lock);
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104 }
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105
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106 int
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107 PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
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108 {
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109 int success;
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110
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111 dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
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112 if (waitflag)
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113 success = mutex_lock((mutex_t *) lock);
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114 else
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115 success = mutex_trylock((mutex_t *) lock);
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116 if (success < 0)
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117 perror(waitflag ? "mutex_lock" : "mutex_trylock");
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118 else
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119 success = !success; /* solaris does it the other way round */
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120 dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
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121 return success;
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122 }
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123
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124 void
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125 PyThread_release_lock(PyThread_type_lock lock)
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126 {
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127 dprintf(("PyThread_release_lock(%p) called\n", lock));
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128 if (mutex_unlock((mutex_t *) lock))
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129 perror("mutex_unlock");
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130 }