Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/threads/th-lock.c */ |
| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This package is an SSL implementation written |
| 6 | * by Eric Young (eay@cryptsoft.com). |
| 7 | * The implementation was written so as to conform with Netscapes SSL. |
| 8 | * |
| 9 | * This library is free for commercial and non-commercial use as long as |
| 10 | * the following conditions are aheared to. The following conditions |
| 11 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 13 | * included with this distribution is covered by the same copyright terms |
| 14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 15 | * |
| 16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 17 | * the code are not to be removed. |
| 18 | * If this package is used in a product, Eric Young should be given attribution |
| 19 | * as the author of the parts of the library used. |
| 20 | * This can be in the form of a textual message at program startup or |
| 21 | * in documentation (online or textual) provided with the package. |
| 22 | * |
| 23 | * Redistribution and use in source and binary forms, with or without |
| 24 | * modification, are permitted provided that the following conditions |
| 25 | * are met: |
| 26 | * 1. Redistributions of source code must retain the copyright |
| 27 | * notice, this list of conditions and the following disclaimer. |
| 28 | * 2. Redistributions in binary form must reproduce the above copyright |
| 29 | * notice, this list of conditions and the following disclaimer in the |
| 30 | * documentation and/or other materials provided with the distribution. |
| 31 | * 3. All advertising materials mentioning features or use of this software |
| 32 | * must display the following acknowledgement: |
| 33 | * "This product includes cryptographic software written by |
| 34 | * Eric Young (eay@cryptsoft.com)" |
| 35 | * The word 'cryptographic' can be left out if the rouines from the library |
| 36 | * being used are not cryptographic related :-). |
| 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 38 | * the apps directory (application code) you must include an acknowledgement: |
| 39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 40 | * |
| 41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 51 | * SUCH DAMAGE. |
| 52 | * |
| 53 | * The licence and distribution terms for any publically available version or |
| 54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 55 | * copied and put under another distribution licence |
| 56 | * [including the GNU Public Licence.] |
| 57 | */ |
| 58 | |
| 59 | #include <stdio.h> |
| 60 | #include <stdlib.h> |
| 61 | #include <string.h> |
| 62 | #include <errno.h> |
| 63 | #ifdef LINUX |
| 64 | #include <typedefs.h> |
| 65 | #endif |
| 66 | #ifdef OPENSSL_SYS_WIN32 |
| 67 | #include <windows.h> |
| 68 | #endif |
| 69 | #ifdef SOLARIS |
| 70 | #include <synch.h> |
| 71 | #include <thread.h> |
| 72 | #endif |
| 73 | #ifdef IRIX |
| 74 | #include <ulocks.h> |
| 75 | #include <sys/prctl.h> |
| 76 | #endif |
| 77 | #ifdef PTHREADS |
| 78 | #include <pthread.h> |
| 79 | #endif |
| 80 | #include <openssl/lhash.h> |
| 81 | #include <openssl/crypto.h> |
| 82 | #include <openssl/buffer.h> |
| 83 | #include "../../e_os.h" |
| 84 | #include <openssl/x509.h> |
| 85 | #include <openssl/ssl.h> |
| 86 | #include <openssl/err.h> |
| 87 | |
| 88 | void CRYPTO_thread_setup(void); |
| 89 | void CRYPTO_thread_cleanup(void); |
| 90 | |
| 91 | static void irix_locking_callback(int mode,int type,char *file,int line); |
| 92 | static void solaris_locking_callback(int mode,int type,char *file,int line); |
| 93 | static void win32_locking_callback(int mode,int type,char *file,int line); |
| 94 | static void pthreads_locking_callback(int mode,int type,char *file,int line); |
| 95 | |
| 96 | static unsigned long irix_thread_id(void ); |
| 97 | static unsigned long solaris_thread_id(void ); |
| 98 | static unsigned long pthreads_thread_id(void ); |
| 99 | |
| 100 | /* usage: |
| 101 | * CRYPTO_thread_setup(); |
| 102 | * application code |
| 103 | * CRYPTO_thread_cleanup(); |
| 104 | */ |
| 105 | |
| 106 | #define THREAD_STACK_SIZE (16*1024) |
| 107 | |
| 108 | #ifdef OPENSSL_SYS_WIN32 |
| 109 | |
| 110 | static HANDLE *lock_cs; |
| 111 | |
| 112 | void CRYPTO_thread_setup(void) |
| 113 | { |
| 114 | int i; |
| 115 | |
| 116 | lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE)); |
| 117 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 118 | { |
| 119 | lock_cs[i]=CreateMutex(NULL,FALSE,NULL); |
| 120 | } |
| 121 | |
| 122 | CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback); |
| 123 | /* id callback defined */ |
| 124 | return(1); |
| 125 | } |
| 126 | |
| 127 | static void CRYPTO_thread_cleanup(void) |
| 128 | { |
| 129 | int i; |
| 130 | |
| 131 | CRYPTO_set_locking_callback(NULL); |
| 132 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 133 | CloseHandle(lock_cs[i]); |
| 134 | OPENSSL_free(lock_cs); |
| 135 | } |
| 136 | |
| 137 | void win32_locking_callback(int mode, int type, char *file, int line) |
| 138 | { |
| 139 | if (mode & CRYPTO_LOCK) |
| 140 | { |
| 141 | WaitForSingleObject(lock_cs[type],INFINITE); |
| 142 | } |
| 143 | else |
| 144 | { |
| 145 | ReleaseMutex(lock_cs[type]); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | #endif /* OPENSSL_SYS_WIN32 */ |
| 150 | |
| 151 | #ifdef SOLARIS |
| 152 | |
| 153 | #define USE_MUTEX |
| 154 | |
| 155 | #ifdef USE_MUTEX |
| 156 | static mutex_t *lock_cs; |
| 157 | #else |
| 158 | static rwlock_t *lock_cs; |
| 159 | #endif |
| 160 | static long *lock_count; |
| 161 | |
| 162 | void CRYPTO_thread_setup(void) |
| 163 | { |
| 164 | int i; |
| 165 | |
| 166 | #ifdef USE_MUTEX |
| 167 | lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(mutex_t)); |
| 168 | #else |
| 169 | lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(rwlock_t)); |
| 170 | #endif |
| 171 | lock_count=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); |
| 172 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 173 | { |
| 174 | lock_count[i]=0; |
| 175 | #ifdef USE_MUTEX |
| 176 | mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL); |
| 177 | #else |
| 178 | rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL); |
| 179 | #endif |
| 180 | } |
| 181 | |
| 182 | CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id); |
| 183 | CRYPTO_set_locking_callback((void (*)())solaris_locking_callback); |
| 184 | } |
| 185 | |
| 186 | void CRYPTO_thread_cleanup(void) |
| 187 | { |
| 188 | int i; |
| 189 | |
| 190 | CRYPTO_set_locking_callback(NULL); |
| 191 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 192 | { |
| 193 | #ifdef USE_MUTEX |
| 194 | mutex_destroy(&(lock_cs[i])); |
| 195 | #else |
| 196 | rwlock_destroy(&(lock_cs[i])); |
| 197 | #endif |
| 198 | } |
| 199 | OPENSSL_free(lock_cs); |
| 200 | OPENSSL_free(lock_count); |
| 201 | } |
| 202 | |
| 203 | void solaris_locking_callback(int mode, int type, char *file, int line) |
| 204 | { |
| 205 | #if 0 |
| 206 | fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n", |
| 207 | CRYPTO_thread_id(), |
| 208 | (mode&CRYPTO_LOCK)?"l":"u", |
| 209 | (type&CRYPTO_READ)?"r":"w",file,line); |
| 210 | #endif |
| 211 | |
| 212 | #if 0 |
| 213 | if (CRYPTO_LOCK_SSL_CERT == type) |
| 214 | fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n", |
| 215 | CRYPTO_thread_id(), |
| 216 | mode,file,line); |
| 217 | #endif |
| 218 | if (mode & CRYPTO_LOCK) |
| 219 | { |
| 220 | #ifdef USE_MUTEX |
| 221 | mutex_lock(&(lock_cs[type])); |
| 222 | #else |
| 223 | if (mode & CRYPTO_READ) |
| 224 | rw_rdlock(&(lock_cs[type])); |
| 225 | else |
| 226 | rw_wrlock(&(lock_cs[type])); |
| 227 | #endif |
| 228 | lock_count[type]++; |
| 229 | } |
| 230 | else |
| 231 | { |
| 232 | #ifdef USE_MUTEX |
| 233 | mutex_unlock(&(lock_cs[type])); |
| 234 | #else |
| 235 | rw_unlock(&(lock_cs[type])); |
| 236 | #endif |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | unsigned long solaris_thread_id(void) |
| 241 | { |
| 242 | unsigned long ret; |
| 243 | |
| 244 | ret=(unsigned long)thr_self(); |
| 245 | return(ret); |
| 246 | } |
| 247 | #endif /* SOLARIS */ |
| 248 | |
| 249 | #ifdef IRIX |
| 250 | /* I don't think this works..... */ |
| 251 | |
| 252 | static usptr_t *arena; |
| 253 | static usema_t **lock_cs; |
| 254 | |
| 255 | void CRYPTO_thread_setup(void) |
| 256 | { |
| 257 | int i; |
| 258 | char filename[20]; |
| 259 | |
| 260 | strcpy(filename,"/tmp/mttest.XXXXXX"); |
| 261 | mktemp(filename); |
| 262 | |
| 263 | usconfig(CONF_STHREADIOOFF); |
| 264 | usconfig(CONF_STHREADMALLOCOFF); |
| 265 | usconfig(CONF_INITUSERS,100); |
| 266 | usconfig(CONF_LOCKTYPE,US_DEBUGPLUS); |
| 267 | arena=usinit(filename); |
| 268 | unlink(filename); |
| 269 | |
| 270 | lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *)); |
| 271 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 272 | { |
| 273 | lock_cs[i]=usnewsema(arena,1); |
| 274 | } |
| 275 | |
| 276 | CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id); |
| 277 | CRYPTO_set_locking_callback((void (*)())irix_locking_callback); |
| 278 | } |
| 279 | |
| 280 | void CRYPTO_thread_cleanup(void) |
| 281 | { |
| 282 | int i; |
| 283 | |
| 284 | CRYPTO_set_locking_callback(NULL); |
| 285 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 286 | { |
| 287 | char buf[10]; |
| 288 | |
| 289 | sprintf(buf,"%2d:",i); |
| 290 | usdumpsema(lock_cs[i],stdout,buf); |
| 291 | usfreesema(lock_cs[i],arena); |
| 292 | } |
| 293 | OPENSSL_free(lock_cs); |
| 294 | } |
| 295 | |
| 296 | void irix_locking_callback(int mode, int type, char *file, int line) |
| 297 | { |
| 298 | if (mode & CRYPTO_LOCK) |
| 299 | { |
| 300 | uspsema(lock_cs[type]); |
| 301 | } |
| 302 | else |
| 303 | { |
| 304 | usvsema(lock_cs[type]); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | unsigned long irix_thread_id(void) |
| 309 | { |
| 310 | unsigned long ret; |
| 311 | |
| 312 | ret=(unsigned long)getpid(); |
| 313 | return(ret); |
| 314 | } |
| 315 | #endif /* IRIX */ |
| 316 | |
| 317 | /* Linux and a few others */ |
| 318 | #ifdef PTHREADS |
| 319 | |
| 320 | static pthread_mutex_t *lock_cs; |
| 321 | static long *lock_count; |
| 322 | |
| 323 | void CRYPTO_thread_setup(void) |
| 324 | { |
| 325 | int i; |
| 326 | |
| 327 | lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t)); |
| 328 | lock_count=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); |
| 329 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 330 | { |
| 331 | lock_count[i]=0; |
| 332 | pthread_mutex_init(&(lock_cs[i]),NULL); |
| 333 | } |
| 334 | |
| 335 | CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id); |
| 336 | CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback); |
| 337 | } |
| 338 | |
| 339 | void thread_cleanup(void) |
| 340 | { |
| 341 | int i; |
| 342 | |
| 343 | CRYPTO_set_locking_callback(NULL); |
| 344 | for (i=0; i<CRYPTO_num_locks(); i++) |
| 345 | { |
| 346 | pthread_mutex_destroy(&(lock_cs[i])); |
| 347 | } |
| 348 | OPENSSL_free(lock_cs); |
| 349 | OPENSSL_free(lock_count); |
| 350 | } |
| 351 | |
| 352 | void pthreads_locking_callback(int mode, int type, char *file, |
| 353 | int line) |
| 354 | { |
| 355 | #if 0 |
| 356 | fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n", |
| 357 | CRYPTO_thread_id(), |
| 358 | (mode&CRYPTO_LOCK)?"l":"u", |
| 359 | (type&CRYPTO_READ)?"r":"w",file,line); |
| 360 | #endif |
| 361 | #if 0 |
| 362 | if (CRYPTO_LOCK_SSL_CERT == type) |
| 363 | fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n", |
| 364 | CRYPTO_thread_id(), |
| 365 | mode,file,line); |
| 366 | #endif |
| 367 | if (mode & CRYPTO_LOCK) |
| 368 | { |
| 369 | pthread_mutex_lock(&(lock_cs[type])); |
| 370 | lock_count[type]++; |
| 371 | } |
| 372 | else |
| 373 | { |
| 374 | pthread_mutex_unlock(&(lock_cs[type])); |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | unsigned long pthreads_thread_id(void) |
| 379 | { |
| 380 | unsigned long ret; |
| 381 | |
| 382 | ret=(unsigned long)pthread_self(); |
| 383 | return(ret); |
| 384 | } |
| 385 | |
| 386 | #endif /* PTHREADS */ |
| 387 | |