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 88void CRYPTO_thread_setup(void); 89void CRYPTO_thread_cleanup(void); 90 91static void irix_locking_callback(int mode, int type, char *file, int line); 92static void solaris_locking_callback(int mode, int type, char *file, 93 int line); 94static void win32_locking_callback(int mode, int type, char *file, int line); 95static void pthreads_locking_callback(int mode, int type, char *file, 96 int line); 97 98static unsigned long irix_thread_id(void); 99static unsigned long solaris_thread_id(void); 100static unsigned long pthreads_thread_id(void); 101 102/*- 103 * usage: 104 * CRYPTO_thread_setup(); 105 * application code 106 * CRYPTO_thread_cleanup(); 107 */ 108 109#define THREAD_STACK_SIZE (16*1024) 110 111#ifdef OPENSSL_SYS_WIN32 112 113static HANDLE *lock_cs; 114 115void CRYPTO_thread_setup(void) 116{ 117 int i; 118 119 lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE)); 120 if (!lock_cs) { 121 /* Nothing we can do about this...void function! */ 122 return; 123 } 124 for (i = 0; i < CRYPTO_num_locks(); i++) { 125 lock_cs[i] = CreateMutex(NULL, FALSE, NULL); 126 } 127 128 CRYPTO_set_locking_callback((void (*)(int, int, char *, int)) 129 win32_locking_callback); 130 /* id callback defined */ 131 return (1); 132} 133 134static void CRYPTO_thread_cleanup(void) 135{ 136 int i; 137 138 CRYPTO_set_locking_callback(NULL); 139 for (i = 0; i < CRYPTO_num_locks(); i++) 140 CloseHandle(lock_cs[i]); 141 OPENSSL_free(lock_cs); 142} 143 144void win32_locking_callback(int mode, int type, char *file, int line) 145{ 146 if (mode & CRYPTO_LOCK) { 147 WaitForSingleObject(lock_cs[type], INFINITE); 148 } else { 149 ReleaseMutex(lock_cs[type]); 150 } 151} 152 153#endif /* OPENSSL_SYS_WIN32 */ 154 155#ifdef SOLARIS 156 157# define USE_MUTEX 158 159# ifdef USE_MUTEX 160static mutex_t *lock_cs; 161# else 162static rwlock_t *lock_cs; 163# endif 164static long *lock_count; 165 166void CRYPTO_thread_setup(void) 167{ 168 int i; 169 170# ifdef USE_MUTEX 171 lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(mutex_t)); 172# else 173 lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(rwlock_t)); 174# endif 175 if (!lock_cs) { 176 /* Nothing we can do about this...void function! */ 177 return; 178 } 179 lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); 180 for (i = 0; i < CRYPTO_num_locks(); i++) { 181 lock_count[i] = 0; 182# ifdef USE_MUTEX 183 mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL); 184# else 185 rwlock_init(&(lock_cs[i]), USYNC_THREAD, NULL); 186# endif 187 } 188 189 CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id); 190 CRYPTO_set_locking_callback((void (*)())solaris_locking_callback); 191} 192 193void CRYPTO_thread_cleanup(void) 194{ 195 int i; 196 197 CRYPTO_set_locking_callback(NULL); 198 for (i = 0; i < CRYPTO_num_locks(); i++) { 199# ifdef USE_MUTEX 200 mutex_destroy(&(lock_cs[i])); 201# else 202 rwlock_destroy(&(lock_cs[i])); 203# endif 204 } 205 OPENSSL_free(lock_cs); 206 OPENSSL_free(lock_count); 207} 208 209void solaris_locking_callback(int mode, int type, char *file, int line) 210{ 211# if 0 212 fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n", 213 CRYPTO_thread_id(), 214 (mode & CRYPTO_LOCK) ? "l" : "u", 215 (type & CRYPTO_READ) ? "r" : "w", file, line); 216# endif 217 218# if 0 219 if (CRYPTO_LOCK_SSL_CERT == type) 220 fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n", 221 CRYPTO_thread_id(), mode, file, line); 222# endif 223 if (mode & CRYPTO_LOCK) { 224# ifdef USE_MUTEX 225 mutex_lock(&(lock_cs[type])); 226# else 227 if (mode & CRYPTO_READ) 228 rw_rdlock(&(lock_cs[type])); 229 else 230 rw_wrlock(&(lock_cs[type])); 231# endif 232 lock_count[type]++; 233 } else { 234# ifdef USE_MUTEX 235 mutex_unlock(&(lock_cs[type])); 236# else 237 rw_unlock(&(lock_cs[type])); 238# endif 239 } 240} 241 242unsigned long solaris_thread_id(void) 243{ 244 unsigned long ret; 245 246 ret = (unsigned long)thr_self(); 247 return (ret); 248} 249#endif /* SOLARIS */ 250 251#ifdef IRIX 252/* I don't think this works..... */ 253 254static usptr_t *arena; 255static usema_t **lock_cs; 256 257void CRYPTO_thread_setup(void) 258{ 259 int i; 260 char filename[20]; 261 262 lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *)); 263 if (!lock_cs) { 264 /* Nothing we can do about this...void function! */ 265 return; 266 } 267 268 strcpy(filename, "/tmp/mttest.XXXXXX"); 269 mktemp(filename); 270 271 usconfig(CONF_STHREADIOOFF); 272 usconfig(CONF_STHREADMALLOCOFF); 273 usconfig(CONF_INITUSERS, 100); 274 usconfig(CONF_LOCKTYPE, US_DEBUGPLUS); 275 arena = usinit(filename); 276 unlink(filename); 277 278 for (i = 0; i < CRYPTO_num_locks(); i++) { 279 lock_cs[i] = usnewsema(arena, 1); 280 } 281 282 CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id); 283 CRYPTO_set_locking_callback((void (*)())irix_locking_callback); 284} 285 286void CRYPTO_thread_cleanup(void) 287{ 288 int i; 289 290 CRYPTO_set_locking_callback(NULL); 291 for (i = 0; i < CRYPTO_num_locks(); i++) { 292 char buf[10]; 293 294 sprintf(buf, "%2d:", i); 295 usdumpsema(lock_cs[i], stdout, buf); 296 usfreesema(lock_cs[i], arena); 297 } 298 OPENSSL_free(lock_cs); 299} 300 301void irix_locking_callback(int mode, int type, char *file, int line) 302{ 303 if (mode & CRYPTO_LOCK) { 304 uspsema(lock_cs[type]); 305 } else { 306 usvsema(lock_cs[type]); 307 } 308} 309 310unsigned long irix_thread_id(void) 311{ 312 unsigned long ret; 313 314 ret = (unsigned long)getpid(); 315 return (ret); 316} 317#endif /* IRIX */ 318 319/* Linux and a few others */ 320#ifdef PTHREADS 321 322static pthread_mutex_t *lock_cs; 323static long *lock_count; 324 325void CRYPTO_thread_setup(void) 326{ 327 int i; 328 329 lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t)); 330 lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); 331 if (!lock_cs || !lock_count) { 332 /* Nothing we can do about this...void function! */ 333 if (lock_cs) 334 OPENSSL_free(lock_cs); 335 if (lock_count) 336 OPENSSL_free(lock_count); 337 return; 338 } 339 for (i = 0; i < CRYPTO_num_locks(); i++) { 340 lock_count[i] = 0; 341 pthread_mutex_init(&(lock_cs[i]), NULL); 342 } 343 344 CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id); 345 CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback); 346} 347 348void thread_cleanup(void) 349{ 350 int i; 351 352 CRYPTO_set_locking_callback(NULL); 353 for (i = 0; i < CRYPTO_num_locks(); i++) { 354 pthread_mutex_destroy(&(lock_cs[i])); 355 } 356 OPENSSL_free(lock_cs); 357 OPENSSL_free(lock_count); 358} 359 360void pthreads_locking_callback(int mode, int type, char *file, int line) 361{ 362# if 0 363 fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n", 364 CRYPTO_thread_id(), 365 (mode & CRYPTO_LOCK) ? "l" : "u", 366 (type & CRYPTO_READ) ? "r" : "w", file, line); 367# endif 368# if 0 369 if (CRYPTO_LOCK_SSL_CERT == type) 370 fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n", 371 CRYPTO_thread_id(), mode, file, line); 372# endif 373 if (mode & CRYPTO_LOCK) { 374 pthread_mutex_lock(&(lock_cs[type])); 375 lock_count[type]++; 376 } else { 377 pthread_mutex_unlock(&(lock_cs[type])); 378 } 379} 380 381unsigned long pthreads_thread_id(void) 382{ 383 unsigned long ret; 384 385 ret = (unsigned long)pthread_self(); 386 return (ret); 387} 388 389#endif /* PTHREADS */ 390