crypto/threads/th-lock.c

   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,
  93                                      int line);
  94 static void win32_locking_callback(int mode, int type, char *file, int line);
  95 static void pthreads_locking_callback(int mode, int type, char *file,
  96                                       int line);
  97
  98 static unsigned long irix_thread_id(void);
  99 static unsigned long solaris_thread_id(void);
 100 static 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
 113 static HANDLE *lock_cs;
 114
 115 void CRYPTO_thread_setup(void)
 116 {
 117     int i;
 118
 119     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));
 120     for (i = 0; i < CRYPTO_num_locks(); i++) {
 121         lock_cs[i] = CreateMutex(NULL, FALSE, NULL);
 122     }
 123
 124     CRYPTO_set_locking_callback((void (*)(int, int, char *, int))
 125                                 win32_locking_callback);
 126     /* id callback defined */
 127     return (1);
 128 }
 129
 130 static void CRYPTO_thread_cleanup(void)
 131 {
 132     int i;
 133
 134     CRYPTO_set_locking_callback(NULL);
 135     for (i = 0; i < CRYPTO_num_locks(); i++)
 136         CloseHandle(lock_cs[i]);
 137     OPENSSL_free(lock_cs);
 138 }
 139
 140 void win32_locking_callback(int mode, int type, char *file, int line)
 141 {
 142     if (mode & CRYPTO_LOCK) {
 143         WaitForSingleObject(lock_cs[type], INFINITE);
 144     } else {
 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         lock_count[i] = 0;
 174 # ifdef USE_MUTEX
 175         mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL);
 176 # else
 177         rwlock_init(&(lock_cs[i]), USYNC_THREAD, NULL);
 178 # endif
 179     }
 180
 181     CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
 182     CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
 183 }
 184
 185 void CRYPTO_thread_cleanup(void)
 186 {
 187     int i;
 188
 189     CRYPTO_set_locking_callback(NULL);
 190     for (i = 0; i < CRYPTO_num_locks(); i++) {
 191 # ifdef USE_MUTEX
 192         mutex_destroy(&(lock_cs[i]));
 193 # else
 194         rwlock_destroy(&(lock_cs[i]));
 195 # endif
 196     }
 197     OPENSSL_free(lock_cs);
 198     OPENSSL_free(lock_count);
 199 }
 200
 201 void solaris_locking_callback(int mode, int type, char *file, int line)
 202 {
 203 # if 0
 204     fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
 205             CRYPTO_thread_id(),
 206             (mode & CRYPTO_LOCK) ? "l" : "u",
 207             (type & CRYPTO_READ) ? "r" : "w", file, line);
 208 # endif
 209
 210 # if 0
 211     if (CRYPTO_LOCK_SSL_CERT == type)
 212         fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
 213                 CRYPTO_thread_id(), mode, file, line);
 214 # endif
 215     if (mode & CRYPTO_LOCK) {
 216 # ifdef USE_MUTEX
 217         mutex_lock(&(lock_cs[type]));
 218 # else
 219         if (mode & CRYPTO_READ)
 220             rw_rdlock(&(lock_cs[type]));
 221         else
 222             rw_wrlock(&(lock_cs[type]));
 223 # endif
 224         lock_count[type]++;
 225     } else {
 226 # ifdef USE_MUTEX
 227         mutex_unlock(&(lock_cs[type]));
 228 # else
 229         rw_unlock(&(lock_cs[type]));
 230 # endif
 231     }
 232 }
 233
 234 unsigned long solaris_thread_id(void)
 235 {
 236     unsigned long ret;
 237
 238     ret = (unsigned long)thr_self();
 239     return (ret);
 240 }
 241 #endif                          /* SOLARIS */
 242
 243 #ifdef IRIX
 244 /* I don't think this works..... */
 245
 246 static usptr_t *arena;
 247 static usema_t **lock_cs;
 248
 249 void CRYPTO_thread_setup(void)
 250 {
 251     int i;
 252     char filename[20];
 253
 254     strcpy(filename, "/tmp/mttest.XXXXXX");
 255     mktemp(filename);
 256
 257     usconfig(CONF_STHREADIOOFF);
 258     usconfig(CONF_STHREADMALLOCOFF);
 259     usconfig(CONF_INITUSERS, 100);
 260     usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
 261     arena = usinit(filename);
 262     unlink(filename);
 263
 264     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
 265     for (i = 0; i < CRYPTO_num_locks(); i++) {
 266         lock_cs[i] = usnewsema(arena, 1);
 267     }
 268
 269     CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 270     CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 271 }
 272
 273 void CRYPTO_thread_cleanup(void)
 274 {
 275     int i;
 276
 277     CRYPTO_set_locking_callback(NULL);
 278     for (i = 0; i < CRYPTO_num_locks(); i++) {
 279         char buf[10];
 280
 281         sprintf(buf, "%2d:", i);
 282         usdumpsema(lock_cs[i], stdout, buf);
 283         usfreesema(lock_cs[i], arena);
 284     }
 285     OPENSSL_free(lock_cs);
 286 }
 287
 288 void irix_locking_callback(int mode, int type, char *file, int line)
 289 {
 290     if (mode & CRYPTO_LOCK) {
 291         uspsema(lock_cs[type]);
 292     } else {
 293         usvsema(lock_cs[type]);
 294     }
 295 }
 296
 297 unsigned long irix_thread_id(void)
 298 {
 299     unsigned long ret;
 300
 301     ret = (unsigned long)getpid();
 302     return (ret);
 303 }
 304 #endif                          /* IRIX */
 305
 306 /* Linux and a few others */
 307 #ifdef PTHREADS
 308
 309 static pthread_mutex_t *lock_cs;
 310 static long *lock_count;
 311
 312 void CRYPTO_thread_setup(void)
 313 {
 314     int i;
 315
 316     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
 317     lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
 318     for (i = 0; i < CRYPTO_num_locks(); i++) {
 319         lock_count[i] = 0;
 320         pthread_mutex_init(&(lock_cs[i]), NULL);
 321     }
 322
 323     CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 324     CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 325 }
 326
 327 void thread_cleanup(void)
 328 {
 329     int i;
 330
 331     CRYPTO_set_locking_callback(NULL);
 332     for (i = 0; i < CRYPTO_num_locks(); i++) {
 333         pthread_mutex_destroy(&(lock_cs[i]));
 334     }
 335     OPENSSL_free(lock_cs);
 336     OPENSSL_free(lock_count);
 337 }
 338
 339 void pthreads_locking_callback(int mode, int type, char *file, int line)
 340 {
 341 # if 0
 342     fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
 343             CRYPTO_thread_id(),
 344             (mode & CRYPTO_LOCK) ? "l" : "u",
 345             (type & CRYPTO_READ) ? "r" : "w", file, line);
 346 # endif
 347 # if 0
 348     if (CRYPTO_LOCK_SSL_CERT == type)
 349         fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
 350                 CRYPTO_thread_id(), mode, file, line);
 351 # endif
 352     if (mode & CRYPTO_LOCK) {
 353         pthread_mutex_lock(&(lock_cs[type]));
 354         lock_count[type]++;
 355     } else {
 356         pthread_mutex_unlock(&(lock_cs[type]));
 357     }
 358 }
 359
 360 unsigned long pthreads_thread_id(void)
 361 {
 362     unsigned long ret;
 363
 364     ret = (unsigned long)pthread_self();
 365     return (ret);
 366 }
 367
 368 #endif                          /* PTHREADS */