| /*********************************************************** |
| Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, |
| Amsterdam, The Netherlands. |
| |
| All Rights Reserved |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee is hereby granted, |
| provided that the above copyright notice appear in all copies and that |
| both that copyright notice and this permission notice appear in |
| supporting documentation, and that the names of Stichting Mathematisch |
| Centrum or CWI not be used in advertising or publicity pertaining to |
| distribution of the software without specific, written prior permission. |
| |
| STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| ******************************************************************/ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include </usr/include/thread.h> |
| |
| |
| /* |
| * Initialization. |
| */ |
| static void _init_thread _P0() |
| { |
| } |
| |
| /* |
| * Thread support. |
| */ |
| struct func_arg { |
| void (*func) _P((void *)); |
| void *arg; |
| }; |
| |
| static void *new_func _P1(funcarg, void *funcarg) |
| { |
| void (*func) _P((void *)); |
| void *arg; |
| |
| func = ((struct func_arg *) funcarg)->func; |
| arg = ((struct func_arg *) funcarg)->arg; |
| free(funcarg); |
| (*func)(arg); |
| return 0; |
| } |
| |
| |
| int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg) |
| { |
| struct func_arg *funcarg; |
| int success = 0; /* init not needed when SOLARIS_THREADS and */ |
| /* C_THREADS implemented properly */ |
| |
| dprintf(("start_new_thread called\n")); |
| if (!initialized) |
| init_thread(); |
| funcarg = (struct func_arg *) malloc(sizeof(struct func_arg)); |
| funcarg->func = func; |
| funcarg->arg = arg; |
| if (thr_create(0, 0, new_func, funcarg, THR_DETACHED, 0)) { |
| perror("thr_create"); |
| free((void *) funcarg); |
| success = -1; |
| } |
| return success < 0 ? 0 : 1; |
| } |
| |
| long get_thread_ident _P0() |
| { |
| if (!initialized) |
| init_thread(); |
| return thr_self(); |
| } |
| |
| static void do_exit_thread _P1(no_cleanup, int no_cleanup) |
| { |
| dprintf(("exit_thread called\n")); |
| if (!initialized) |
| if (no_cleanup) |
| _exit(0); |
| else |
| exit(0); |
| thr_exit(0); |
| } |
| |
| void exit_thread _P0() |
| { |
| do_exit_thread(0); |
| } |
| |
| void _exit_thread _P0() |
| { |
| do_exit_thread(1); |
| } |
| |
| #ifndef NO_EXIT_PROG |
| static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup) |
| { |
| dprintf(("exit_prog(%d) called\n", status)); |
| if (!initialized) |
| if (no_cleanup) |
| _exit(status); |
| else |
| exit(status); |
| if (no_cleanup) |
| _exit(status); |
| else |
| exit(status); |
| } |
| |
| void exit_prog _P1(status, int status) |
| { |
| do_exit_prog(status, 0); |
| } |
| |
| void _exit_prog _P1(status, int status) |
| { |
| do_exit_prog(status, 1); |
| } |
| #endif /* NO_EXIT_PROG */ |
| |
| /* |
| * Lock support. |
| */ |
| type_lock allocate_lock _P0() |
| { |
| mutex_t *lock; |
| |
| dprintf(("allocate_lock called\n")); |
| if (!initialized) |
| init_thread(); |
| |
| lock = (mutex_t *) malloc(sizeof(mutex_t)); |
| if (mutex_init(lock, USYNC_THREAD, 0)) { |
| perror("mutex_init"); |
| free((void *) lock); |
| lock = 0; |
| } |
| dprintf(("allocate_lock() -> %lx\n", (long)lock)); |
| return (type_lock) lock; |
| } |
| |
| void free_lock _P1(lock, type_lock lock) |
| { |
| dprintf(("free_lock(%lx) called\n", (long)lock)); |
| mutex_destroy((mutex_t *) lock); |
| free((void *) lock); |
| } |
| |
| int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag) |
| { |
| int success; |
| |
| dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag)); |
| if (waitflag) |
| success = mutex_lock((mutex_t *) lock); |
| else |
| success = mutex_trylock((mutex_t *) lock); |
| if (success < 0) |
| perror(waitflag ? "mutex_lock" : "mutex_trylock"); |
| else |
| success = !success; /* solaris does it the other way round */ |
| dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success)); |
| return success; |
| } |
| |
| void release_lock _P1(lock, type_lock lock) |
| { |
| dprintf(("release_lock(%lx) called\n", (long)lock)); |
| if (mutex_unlock((mutex_t *) lock)) |
| perror("mutex_unlock"); |
| } |
| |
| /* |
| * Semaphore support. |
| */ |
| type_sema allocate_sema _P1(value, int value) |
| { |
| sema_t *sema; |
| dprintf(("allocate_sema called\n")); |
| if (!initialized) |
| init_thread(); |
| |
| sema = (sema_t *) malloc(sizeof(sema_t)); |
| if (sema_init(sema, value, USYNC_THREAD, 0)) { |
| perror("sema_init"); |
| free((void *) sema); |
| sema = 0; |
| } |
| dprintf(("allocate_sema() -> %lx\n", (long) sema)); |
| return (type_sema) sema; |
| } |
| |
| void free_sema _P1(sema, type_sema sema) |
| { |
| dprintf(("free_sema(%lx) called\n", (long) sema)); |
| if (sema_destroy((sema_t *) sema)) |
| perror("sema_destroy"); |
| free((void *) sema); |
| } |
| |
| void down_sema _P1(sema, type_sema sema) |
| { |
| dprintf(("down_sema(%lx) called\n", (long) sema)); |
| if (sema_wait((sema_t *) sema)) |
| perror("sema_wait"); |
| dprintf(("down_sema(%lx) return\n", (long) sema)); |
| } |
| |
| void up_sema _P1(sema, type_sema sema) |
| { |
| dprintf(("up_sema(%lx)\n", (long) sema)); |
| if (sema_post((sema_t *) sema)) |
| perror("sema_post"); |
| } |