Python/thread_solaris.h

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