rumpuser_pth_dummy.c revision 1.2
1 /* $NetBSD: rumpuser_pth_dummy.c,v 1.2 2011/05/23 20:49:08 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 #if !defined(lint) 30 __RCSID("$NetBSD: rumpuser_pth_dummy.c,v 1.2 2011/05/23 20:49:08 joerg Exp $"); 31 #endif /* !lint */ 32 33 #include <sys/time.h> 34 35 #include <assert.h> 36 #include <errno.h> 37 #include <stdlib.h> 38 #include <stdio.h> 39 #include <string.h> 40 #include <stdint.h> 41 42 #include <rump/rumpuser.h> 43 44 #include "rumpuser_int.h" 45 46 struct rumpuser_cv {}; 47 48 struct rumpuser_mtx { 49 int v; 50 }; 51 52 struct rumpuser_rw { 53 int v; 54 }; 55 56 struct rumpuser_mtx rumpuser_aio_mtx; 57 struct rumpuser_cv rumpuser_aio_cv; 58 int rumpuser_aio_head, rumpuser_aio_tail; 59 struct rumpuser_aio rumpuser_aios[N_AIOS]; 60 61 void donada(int); 62 /*ARGSUSED*/ 63 void donada(int arg) {} 64 void dounnada(int, int *); 65 /*ARGSUSED*/ 66 void dounnada(int arg, int *ap) {} 67 kernel_lockfn rumpuser__klock = donada; 68 kernel_unlockfn rumpuser__kunlock = dounnada; 69 70 /*ARGSUSED*/ 71 void 72 rumpuser_thrinit(kernel_lockfn lockfn, kernel_unlockfn unlockfn, int threads) 73 { 74 75 } 76 77 /*ARGSUSED*/ 78 void 79 rumpuser_biothread(void *arg) 80 { 81 82 fprintf(stderr, "rumpuser: threads not available\n"); 83 abort(); 84 } 85 86 /*ARGSUSED*/ 87 int 88 rumpuser_thread_create(void *(*f)(void *), void *arg, const char *thrname) 89 { 90 91 fprintf(stderr, "rumpuser: threads not available\n"); 92 abort(); 93 return 0; 94 } 95 96 void 97 rumpuser_thread_exit(void) 98 { 99 100 fprintf(stderr, "rumpuser: threads not available\n"); 101 abort(); 102 } 103 104 void 105 rumpuser_mutex_init(struct rumpuser_mtx **mtx) 106 { 107 108 *mtx = calloc(1, sizeof(struct rumpuser_mtx)); 109 } 110 111 void 112 rumpuser_mutex_recursive_init(struct rumpuser_mtx **mtx) 113 { 114 115 rumpuser_mutex_init(mtx); 116 } 117 118 void 119 rumpuser_mutex_enter(struct rumpuser_mtx *mtx) 120 { 121 122 mtx->v++; 123 } 124 125 int 126 rumpuser_mutex_tryenter(struct rumpuser_mtx *mtx) 127 { 128 129 mtx->v++; 130 return 1; 131 } 132 133 void 134 rumpuser_mutex_exit(struct rumpuser_mtx *mtx) 135 { 136 137 mtx->v--; 138 } 139 140 void 141 rumpuser_mutex_destroy(struct rumpuser_mtx *mtx) 142 { 143 144 free(mtx); 145 } 146 147 int 148 rumpuser_mutex_held(struct rumpuser_mtx *mtx) 149 { 150 151 return mtx->v; 152 } 153 154 void 155 rumpuser_rw_init(struct rumpuser_rw **rw) 156 { 157 158 *rw = calloc(1, sizeof(struct rumpuser_rw)); 159 } 160 161 void 162 rumpuser_rw_enter(struct rumpuser_rw *rw, int write) 163 { 164 165 if (write) { 166 rw->v++; 167 assert(rw->v == 1); 168 } else { 169 assert(rw->v <= 0); 170 rw->v--; 171 } 172 } 173 174 int 175 rumpuser_rw_tryenter(struct rumpuser_rw *rw, int write) 176 { 177 178 rumpuser_rw_enter(rw, write); 179 return 1; 180 } 181 182 void 183 rumpuser_rw_exit(struct rumpuser_rw *rw) 184 { 185 186 if (rw->v > 0) { 187 assert(rw->v == 1); 188 rw->v--; 189 } else { 190 rw->v++; 191 } 192 } 193 194 void 195 rumpuser_rw_destroy(struct rumpuser_rw *rw) 196 { 197 198 free(rw); 199 } 200 201 int 202 rumpuser_rw_held(struct rumpuser_rw *rw) 203 { 204 205 return rw->v != 0; 206 } 207 208 int 209 rumpuser_rw_rdheld(struct rumpuser_rw *rw) 210 { 211 212 return rw->v < 0; 213 } 214 215 int 216 rumpuser_rw_wrheld(struct rumpuser_rw *rw) 217 { 218 219 return rw->v > 0; 220 } 221 222 /*ARGSUSED*/ 223 void 224 rumpuser_cv_init(struct rumpuser_cv **cv) 225 { 226 227 } 228 229 /*ARGSUSED*/ 230 void 231 rumpuser_cv_destroy(struct rumpuser_cv *cv) 232 { 233 234 } 235 236 /*ARGSUSED*/ 237 void 238 rumpuser_cv_wait(struct rumpuser_cv *cv, struct rumpuser_mtx *mtx) 239 { 240 241 } 242 243 /*ARGSUSED*/ 244 int 245 rumpuser_cv_timedwait(struct rumpuser_cv *cv, struct rumpuser_mtx *mtx, 246 int64_t sec, int64_t nsec) 247 { 248 struct timespec ts; 249 250 /*LINTED*/ 251 ts.tv_sec = sec; 252 /*LINTED*/ 253 ts.tv_nsec = nsec; 254 255 nanosleep(&ts, NULL); 256 return 0; 257 } 258 259 /*ARGSUSED*/ 260 void 261 rumpuser_cv_signal(struct rumpuser_cv *cv) 262 { 263 264 } 265 266 /*ARGSUSED*/ 267 void 268 rumpuser_cv_broadcast(struct rumpuser_cv *cv) 269 { 270 271 } 272 273 /*ARGSUSED*/ 274 int 275 rumpuser_cv_has_waiters(struct rumpuser_cv *cv) 276 { 277 278 return 0; 279 } 280 281 /* 282 * curlwp 283 */ 284 285 static struct lwp *curlwp; 286 void 287 rumpuser_set_curlwp(struct lwp *l) 288 { 289 290 curlwp = l; 291 } 292 293 struct lwp * 294 rumpuser_get_curlwp(void) 295 { 296 297 return curlwp; 298 } 299
Indexes created Wed Oct 01 07:09:59 GMT 2025