rumpuser_pth_dummy.c revision 1.13
1 /* $NetBSD: rumpuser_pth_dummy.c,v 1.13 2013/05/02 19:14:59 pooka 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 "rumpuser_port.h" 29 30 #include <sys/cdefs.h> 31 #if !defined(lint) 32 __RCSID("$NetBSD: rumpuser_pth_dummy.c,v 1.13 2013/05/02 19:14:59 pooka Exp $"); 33 #endif /* !lint */ 34 35 #include <sys/time.h> 36 37 #include <assert.h> 38 #include <errno.h> 39 #include <stdlib.h> 40 #include <stdio.h> 41 #include <string.h> 42 #include <stdint.h> 43 44 #include <rump/rumpuser.h> 45 46 #include "rumpuser_int.h" 47 48 static struct lwp *curlwp; 49 50 struct rumpuser_cv {}; 51 52 struct rumpuser_mtx { 53 int v; 54 struct lwp *o; 55 }; 56 57 struct rumpuser_rw { 58 int v; 59 }; 60 61 void 62 rumpuser__thrinit(void) 63 { 64 65 return; 66 } 67 68 /*ARGSUSED*/ 69 int 70 rumpuser_thread_create(void *(*f)(void *), void *arg, const char *thrname, 71 int joinable, int pri, int cpuidx, void **tptr) 72 { 73 74 fprintf(stderr, "rumpuser: threads not available\n"); 75 abort(); 76 return 0; 77 } 78 79 void 80 rumpuser_thread_exit(void) 81 { 82 83 fprintf(stderr, "rumpuser: threads not available\n"); 84 abort(); 85 } 86 87 int 88 rumpuser_thread_join(void *p) 89 { 90 91 return 0; 92 } 93 94 void 95 rumpuser_mutex_init(struct rumpuser_mtx **mtx, int flgas) 96 { 97 98 *mtx = calloc(1, sizeof(struct rumpuser_mtx)); 99 } 100 101 void 102 rumpuser_mutex_enter(struct rumpuser_mtx *mtx) 103 { 104 105 mtx->v++; 106 mtx->o = curlwp; 107 } 108 109 void 110 rumpuser_mutex_enter_nowrap(struct rumpuser_mtx *mtx) 111 { 112 113 rumpuser_mutex_enter(mtx); 114 } 115 116 int 117 rumpuser_mutex_tryenter(struct rumpuser_mtx *mtx) 118 { 119 120 mtx->v++; 121 return 0; 122 } 123 124 void 125 rumpuser_mutex_exit(struct rumpuser_mtx *mtx) 126 { 127 128 assert(mtx->v > 0); 129 if (--mtx->v == 0) 130 mtx->o = NULL; 131 } 132 133 void 134 rumpuser_mutex_destroy(struct rumpuser_mtx *mtx) 135 { 136 137 free(mtx); 138 } 139 140 void 141 rumpuser_mutex_owner(struct rumpuser_mtx *mtx, struct lwp **lp) 142 { 143 144 *lp = mtx->o; 145 } 146 147 void 148 rumpuser_rw_init(struct rumpuser_rw **rw) 149 { 150 151 *rw = calloc(1, sizeof(struct rumpuser_rw)); 152 } 153 154 void 155 rumpuser_rw_enter(struct rumpuser_rw *rw, int write) 156 { 157 158 if (write) { 159 rw->v++; 160 assert(rw->v == 1); 161 } else { 162 assert(rw->v <= 0); 163 rw->v--; 164 } 165 } 166 167 int 168 rumpuser_rw_tryenter(struct rumpuser_rw *rw, int write) 169 { 170 171 rumpuser_rw_enter(rw, write); 172 return 0; 173 } 174 175 void 176 rumpuser_rw_exit(struct rumpuser_rw *rw) 177 { 178 179 if (rw->v > 0) { 180 assert(rw->v == 1); 181 rw->v--; 182 } else { 183 rw->v++; 184 } 185 } 186 187 void 188 rumpuser_rw_destroy(struct rumpuser_rw *rw) 189 { 190 191 free(rw); 192 } 193 194 void 195 rumpuser_rw_held(struct rumpuser_rw *rw, int *rvp) 196 { 197 198 *rvp = rw->v != 0; 199 } 200 201 void 202 rumpuser_rw_rdheld(struct rumpuser_rw *rw, int *rvp) 203 { 204 205 *rvp = rw->v < 0; 206 } 207 208 void 209 rumpuser_rw_wrheld(struct rumpuser_rw *rw, int *rvp) 210 { 211 212 *rvp = rw->v > 0; 213 } 214 215 /*ARGSUSED*/ 216 void 217 rumpuser_cv_init(struct rumpuser_cv **cv) 218 { 219 220 } 221 222 /*ARGSUSED*/ 223 void 224 rumpuser_cv_destroy(struct rumpuser_cv *cv) 225 { 226 227 } 228 229 /*ARGSUSED*/ 230 void 231 rumpuser_cv_wait(struct rumpuser_cv *cv, struct rumpuser_mtx *mtx) 232 { 233 234 } 235 236 /*ARGSUSED*/ 237 void 238 rumpuser_cv_wait_nowrap(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 void 275 rumpuser_cv_has_waiters(struct rumpuser_cv *cv, int *rvp) 276 { 277 278 *rvp = 0; 279 } 280 281 /* 282 * curlwp 283 */ 284 285 void 286 rumpuser_curlwpop(enum rumplwpop op, struct lwp *l) 287 { 288 289 switch (op) { 290 case RUMPUSER_LWP_CREATE: 291 case RUMPUSER_LWP_DESTROY: 292 break; 293 case RUMPUSER_LWP_SET: 294 curlwp = l; 295 break; 296 } 297 } 298 299 struct lwp * 300 rumpuser_curlwp(void) 301 { 302 303 return curlwp; 304 } 305
Indexes created Wed Oct 01 07:09:59 GMT 2025