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,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 /*-
 101  * usage:
 102  * CRYPTO_thread_setup();
 103  * application code
 104  * CRYPTO_thread_cleanup();
 105  */
 106
 107 #define THREAD_STACK_SIZE (16*1024)
 108
 109 #ifdef OPENSSL_SYS_WIN32
 110
 111 static HANDLE *lock_cs;
 112
 113 void CRYPTO_thread_setup(void)
 114         {
 115         int i;
 116
 117         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));
 118         for (i=0; i<CRYPTO_num_locks(); i++)
 119                 {
 120                 lock_cs[i]=CreateMutex(NULL,FALSE,NULL);
 121                 }
 122
 123         CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback);
 124         /* id callback defined */
 125         return(1);
 126         }
 127
 128 static void CRYPTO_thread_cleanup(void)
 129         {
 130         int i;
 131
 132         CRYPTO_set_locking_callback(NULL);
 133         for (i=0; i<CRYPTO_num_locks(); i++)
 134                 CloseHandle(lock_cs[i]);
 135         OPENSSL_free(lock_cs);
 136         }
 137
 138 void win32_locking_callback(int mode, int type, char *file, int line)
 139         {
 140         if (mode & CRYPTO_LOCK)
 141                 {
 142                 WaitForSingleObject(lock_cs[type],INFINITE);
 143                 }
 144         else
 145                 {
 146                 ReleaseMutex(lock_cs[type]);
 147                 }
 148         }
 149
 150 #endif /* OPENSSL_SYS_WIN32 */
 151
 152 #ifdef SOLARIS
 153
 154 #define USE_MUTEX
 155
 156 #ifdef USE_MUTEX
 157 static mutex_t *lock_cs;
 158 #else
 159 static rwlock_t *lock_cs;
 160 #endif
 161 static long *lock_count;
 162
 163 void CRYPTO_thread_setup(void)
 164         {
 165         int i;
 166
 167 #ifdef USE_MUTEX
 168         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(mutex_t));
 169 #else
 170         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(rwlock_t));
 171 #endif
 172         lock_count=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
 173         for (i=0; i<CRYPTO_num_locks(); i++)
 174                 {
 175                 lock_count[i]=0;
 176 #ifdef USE_MUTEX
 177                 mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 178 #else
 179                 rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 180 #endif
 181                 }
 182
 183         CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
 184         CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
 185         }
 186
 187 void CRYPTO_thread_cleanup(void)
 188         {
 189         int i;
 190
 191         CRYPTO_set_locking_callback(NULL);
 192         for (i=0; i<CRYPTO_num_locks(); i++)
 193                 {
 194 #ifdef USE_MUTEX
 195                 mutex_destroy(&(lock_cs[i]));
 196 #else
 197                 rwlock_destroy(&(lock_cs[i]));
 198 #endif
 199                 }
 200         OPENSSL_free(lock_cs);
 201         OPENSSL_free(lock_count);
 202         }
 203
 204 void solaris_locking_callback(int mode, int type, char *file, int line)
 205         {
 206 #if 0
 207         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 208                 CRYPTO_thread_id(),
 209                 (mode&CRYPTO_LOCK)?"l":"u",
 210                 (type&CRYPTO_READ)?"r":"w",file,line);
 211 #endif
 212
 213 #if 0
 214         if (CRYPTO_LOCK_SSL_CERT == type)
 215                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 216                         CRYPTO_thread_id(),
 217                         mode,file,line);
 218 #endif
 219         if (mode & CRYPTO_LOCK)
 220                 {
 221 #ifdef USE_MUTEX
 222                 mutex_lock(&(lock_cs[type]));
 223 #else
 224                 if (mode & CRYPTO_READ)
 225                         rw_rdlock(&(lock_cs[type]));
 226                 else
 227                         rw_wrlock(&(lock_cs[type]));
 228 #endif
 229                 lock_count[type]++;
 230                 }
 231         else
 232                 {
 233 #ifdef USE_MUTEX
 234                 mutex_unlock(&(lock_cs[type]));
 235 #else
 236                 rw_unlock(&(lock_cs[type]));
 237 #endif
 238                 }
 239         }
 240
 241 unsigned long solaris_thread_id(void)
 242         {
 243         unsigned long ret;
 244
 245         ret=(unsigned long)thr_self();
 246         return(ret);
 247         }
 248 #endif /* SOLARIS */
 249
 250 #ifdef IRIX
 251 /* I don't think this works..... */
 252
 253 static usptr_t *arena;
 254 static usema_t **lock_cs;
 255
 256 void CRYPTO_thread_setup(void)
 257         {
 258         int i;
 259         char filename[20];
 260
 261         strcpy(filename,"/tmp/mttest.XXXXXX");
 262         mktemp(filename);
 263
 264         usconfig(CONF_STHREADIOOFF);
 265         usconfig(CONF_STHREADMALLOCOFF);
 266         usconfig(CONF_INITUSERS,100);
 267         usconfig(CONF_LOCKTYPE,US_DEBUGPLUS);
 268         arena=usinit(filename);
 269         unlink(filename);
 270
 271         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
 272         for (i=0; i<CRYPTO_num_locks(); i++)
 273                 {
 274                 lock_cs[i]=usnewsema(arena,1);
 275                 }
 276
 277         CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 278         CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 279         }
 280
 281 void CRYPTO_thread_cleanup(void)
 282         {
 283         int i;
 284
 285         CRYPTO_set_locking_callback(NULL);
 286         for (i=0; i<CRYPTO_num_locks(); i++)
 287                 {
 288                 char buf[10];
 289
 290                 sprintf(buf,"%2d:",i);
 291                 usdumpsema(lock_cs[i],stdout,buf);
 292                 usfreesema(lock_cs[i],arena);
 293                 }
 294         OPENSSL_free(lock_cs);
 295         }
 296
 297 void irix_locking_callback(int mode, int type, char *file, int line)
 298         {
 299         if (mode & CRYPTO_LOCK)
 300                 {
 301                 uspsema(lock_cs[type]);
 302                 }
 303         else
 304                 {
 305                 usvsema(lock_cs[type]);
 306                 }
 307         }
 308
 309 unsigned long irix_thread_id(void)
 310         {
 311         unsigned long ret;
 312
 313         ret=(unsigned long)getpid();
 314         return(ret);
 315         }
 316 #endif /* IRIX */
 317
 318 /* Linux and a few others */
 319 #ifdef PTHREADS
 320
 321 static pthread_mutex_t *lock_cs;
 322 static long *lock_count;
 323
 324 void CRYPTO_thread_setup(void)
 325         {
 326         int i;
 327
 328         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
 329         lock_count=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
 330         for (i=0; i<CRYPTO_num_locks(); i++)
 331                 {
 332                 lock_count[i]=0;
 333                 pthread_mutex_init(&(lock_cs[i]),NULL);
 334                 }
 335
 336         CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 337         CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 338         }
 339
 340 void thread_cleanup(void)
 341         {
 342         int i;
 343
 344         CRYPTO_set_locking_callback(NULL);
 345         for (i=0; i<CRYPTO_num_locks(); i++)
 346                 {
 347                 pthread_mutex_destroy(&(lock_cs[i]));
 348                 }
 349         OPENSSL_free(lock_cs);
 350         OPENSSL_free(lock_count);
 351         }
 352
 353 void pthreads_locking_callback(int mode, int type, char *file,
 354              int line)
 355       {
 356 #if 0
 357         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 358                 CRYPTO_thread_id(),
 359                 (mode&CRYPTO_LOCK)?"l":"u",
 360                 (type&CRYPTO_READ)?"r":"w",file,line);
 361 #endif
 362 #if 0
 363         if (CRYPTO_LOCK_SSL_CERT == type)
 364                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 365                 CRYPTO_thread_id(),
 366                 mode,file,line);
 367 #endif
 368         if (mode & CRYPTO_LOCK)
 369                 {
 370                 pthread_mutex_lock(&(lock_cs[type]));
 371                 lock_count[type]++;
 372                 }
 373         else
 374                 {
 375                 pthread_mutex_unlock(&(lock_cs[type]));
 376                 }
 377         }
 378
 379 unsigned long pthreads_thread_id(void)
 380         {
 381         unsigned long ret;
 382
 383         ret=(unsigned long)pthread_self();
 384         return(ret);
 385         }
 386
 387 #endif /* PTHREADS */
 388