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     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
 134 static 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
 144 void 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
 160 static mutex_t *lock_cs;
 161 # else
 162 static rwlock_t *lock_cs;
 163 # endif
 164 static long *lock_count;
 165
 166 void 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
 193 void 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
 209 void solaris_locking_callback(int mode, int type, char *file, int line)
 210 {
 211     if (mode & CRYPTO_LOCK) {
 212 # ifdef USE_MUTEX
 213         mutex_lock(&(lock_cs[type]));
 214 # else
 215         if (mode & CRYPTO_READ)
 216             rw_rdlock(&(lock_cs[type]));
 217         else
 218             rw_wrlock(&(lock_cs[type]));
 219 # endif
 220         lock_count[type]++;
 221     } else {
 222 # ifdef USE_MUTEX
 223         mutex_unlock(&(lock_cs[type]));
 224 # else
 225         rw_unlock(&(lock_cs[type]));
 226 # endif
 227     }
 228 }
 229
 230 unsigned long solaris_thread_id(void)
 231 {
 232     unsigned long ret;
 233
 234     ret = (unsigned long)thr_self();
 235     return (ret);
 236 }
 237 #endif                          /* SOLARIS */
 238
 239 #ifdef IRIX
 240 /* I don't think this works..... */
 241
 242 static usptr_t *arena;
 243 static usema_t **lock_cs;
 244
 245 void CRYPTO_thread_setup(void)
 246 {
 247     int i;
 248     char filename[20];
 249
 250     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
 251     if (!lock_cs) {
 252         /* Nothing we can do about this...void function! */
 253         return;
 254     }
 255
 256     strcpy(filename, "/tmp/mttest.XXXXXX");
 257     mktemp(filename);
 258
 259     usconfig(CONF_STHREADIOOFF);
 260     usconfig(CONF_STHREADMALLOCOFF);
 261     usconfig(CONF_INITUSERS, 100);
 262     usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
 263     arena = usinit(filename);
 264     unlink(filename);
 265
 266     for (i = 0; i < CRYPTO_num_locks(); i++) {
 267         lock_cs[i] = usnewsema(arena, 1);
 268     }
 269
 270     CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 271     CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 272 }
 273
 274 void CRYPTO_thread_cleanup(void)
 275 {
 276     int i;
 277
 278     CRYPTO_set_locking_callback(NULL);
 279     for (i = 0; i < CRYPTO_num_locks(); i++) {
 280         char buf[10];
 281
 282         sprintf(buf, "%2d:", i);
 283         usdumpsema(lock_cs[i], stdout, buf);
 284         usfreesema(lock_cs[i], arena);
 285     }
 286     OPENSSL_free(lock_cs);
 287 }
 288
 289 void irix_locking_callback(int mode, int type, char *file, int line)
 290 {
 291     if (mode & CRYPTO_LOCK) {
 292         uspsema(lock_cs[type]);
 293     } else {
 294         usvsema(lock_cs[type]);
 295     }
 296 }
 297
 298 unsigned long irix_thread_id(void)
 299 {
 300     unsigned long ret;
 301
 302     ret = (unsigned long)getpid();
 303     return (ret);
 304 }
 305 #endif                          /* IRIX */
 306
 307 /* Linux and a few others */
 308 #ifdef PTHREADS
 309
 310 static pthread_mutex_t *lock_cs;
 311 static long *lock_count;
 312
 313 void CRYPTO_thread_setup(void)
 314 {
 315     int i;
 316
 317     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
 318     lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
 319     if (!lock_cs || !lock_count) {
 320         /* Nothing we can do about this...void function! */
 321         if (lock_cs)
 322             OPENSSL_free(lock_cs);
 323         if (lock_count)
 324             OPENSSL_free(lock_count);
 325         return;
 326     }
 327     for (i = 0; i < CRYPTO_num_locks(); i++) {
 328         lock_count[i] = 0;
 329         pthread_mutex_init(&(lock_cs[i]), NULL);
 330     }
 331
 332     CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 333     CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 334 }
 335
 336 void thread_cleanup(void)
 337 {
 338     int i;
 339
 340     CRYPTO_set_locking_callback(NULL);
 341     for (i = 0; i < CRYPTO_num_locks(); i++) {
 342         pthread_mutex_destroy(&(lock_cs[i]));
 343     }
 344     OPENSSL_free(lock_cs);
 345     OPENSSL_free(lock_count);
 346 }
 347
 348 void pthreads_locking_callback(int mode, int type, char *file, int line)
 349 {
 350     if (mode & CRYPTO_LOCK) {
 351         pthread_mutex_lock(&(lock_cs[type]));
 352         lock_count[type]++;
 353     } else {
 354         pthread_mutex_unlock(&(lock_cs[type]));
 355     }
 356 }
 357
 358 unsigned long pthreads_thread_id(void)
 359 {
 360     unsigned long ret;
 361
 362     ret = (unsigned long)pthread_self();
 363     return (ret);
 364 }
 365
 366 #endif                          /* PTHREADS */