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| 1 | +/*********************************************************** |
| 2 | +Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, |
| 3 | +Amsterdam, 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 <cthreads.h> |
| 26 | + |
| 27 | + |
| 28 | +/* |
| 29 | + * Initialization. |
| 30 | + */ |
| 31 | +static void _init_thread _P0() |
| 32 | +{ |
| 33 | + cthread_init(); |
| 34 | +} |
| 35 | + |
| 36 | +/* |
| 37 | + * Thread support. |
| 38 | + */ |
| 39 | +int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg) |
| 40 | +{ |
| 41 | +#if defined(SGI_THREADS) && defined(USE_DL) |
| 42 | + long addr, size; |
| 43 | + static int local_initialized = 0; |
| 44 | +#endif /* SGI_THREADS and USE_DL */ |
| 45 | + int success = 0; /* init not needed when SOLARIS_THREADS and */ |
| 46 | + /* C_THREADS implemented properly */ |
| 47 | + |
| 48 | + dprintf(("start_new_thread called\n")); |
| 49 | + if (!initialized) |
| 50 | + init_thread(); |
| 51 | + (void) cthread_fork(func, arg); |
| 52 | + return success < 0 ? 0 : 1; |
| 53 | +} |
| 54 | + |
| 55 | +static void do_exit_thread _P1(no_cleanup, int no_cleanup) |
| 56 | +{ |
| 57 | + dprintf(("exit_thread called\n")); |
| 58 | + if (!initialized) |
| 59 | + if (no_cleanup) |
| 60 | + _exit(0); |
| 61 | + else |
| 62 | + exit(0); |
| 63 | + cthread_exit(0); |
| 64 | +} |
| 65 | + |
| 66 | +void exit_thread _P0() |
| 67 | +{ |
| 68 | + do_exit_thread(0); |
| 69 | +} |
| 70 | + |
| 71 | +void _exit_thread _P0() |
| 72 | +{ |
| 73 | + do_exit_thread(1); |
| 74 | +} |
| 75 | + |
| 76 | +#ifndef NO_EXIT_PROG |
| 77 | +static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup) |
| 78 | +{ |
| 79 | + dprintf(("exit_prog(%d) called\n", status)); |
| 80 | + if (!initialized) |
| 81 | + if (no_cleanup) |
| 82 | + _exit(status); |
| 83 | + else |
| 84 | + exit(status); |
| 85 | +} |
| 86 | + |
| 87 | +void exit_prog _P1(status, int status) |
| 88 | +{ |
| 89 | + do_exit_prog(status, 0); |
| 90 | +} |
| 91 | + |
| 92 | +void _exit_prog _P1(status, int status) |
| 93 | +{ |
| 94 | + do_exit_prog(status, 1); |
| 95 | +} |
| 96 | +#endif /* NO_EXIT_PROG */ |
| 97 | + |
| 98 | +/* |
| 99 | + * Lock support. |
| 100 | + */ |
| 101 | +type_lock allocate_lock _P0() |
| 102 | +{ |
| 103 | + |
| 104 | + dprintf(("allocate_lock called\n")); |
| 105 | + if (!initialized) |
| 106 | + init_thread(); |
| 107 | + |
| 108 | + dprintf(("allocate_lock() -> %lx\n", (long)lock)); |
| 109 | + return (type_lock) lock; |
| 110 | +} |
| 111 | + |
| 112 | +void free_lock _P1(lock, type_lock lock) |
| 113 | +{ |
| 114 | + dprintf(("free_lock(%lx) called\n", (long)lock)); |
| 115 | +} |
| 116 | + |
| 117 | +int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag) |
| 118 | +{ |
| 119 | + int success; |
| 120 | + |
| 121 | + dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag)); |
| 122 | + dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success)); |
| 123 | + return success; |
| 124 | +} |
| 125 | + |
| 126 | +void release_lock _P1(lock, type_lock lock) |
| 127 | +{ |
| 128 | + dprintf(("release_lock(%lx) called\n", (long)lock)); |
| 129 | +} |
| 130 | + |
| 131 | +/* |
| 132 | + * Semaphore support. |
| 133 | + */ |
| 134 | +type_sema allocate_sema _P1(value, int value) |
| 135 | +{ |
| 136 | + dprintf(("allocate_sema called\n")); |
| 137 | + if (!initialized) |
| 138 | + init_thread(); |
| 139 | + |
| 140 | + dprintf(("allocate_sema() -> %lx\n", (long) sema)); |
| 141 | + return (type_sema) sema; |
| 142 | +} |
| 143 | + |
| 144 | +void free_sema _P1(sema, type_sema sema) |
| 145 | +{ |
| 146 | + dprintf(("free_sema(%lx) called\n", (long) sema)); |
| 147 | +} |
| 148 | + |
| 149 | +void down_sema _P1(sema, type_sema sema) |
| 150 | +{ |
| 151 | + dprintf(("down_sema(%lx) called\n", (long) sema)); |
| 152 | + dprintf(("down_sema(%lx) return\n", (long) sema)); |
| 153 | +} |
| 154 | + |
| 155 | +void up_sema _P1(sema, type_sema sema) |
| 156 | +{ |
| 157 | + dprintf(("up_sema(%lx)\n", (long) sema)); |
| 158 | +} |
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