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 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 #include <openssl/lhash.h>
  78 #include <openssl/crypto.h>
  79 #include <openssl/buffer.h>
  80 #include <openssl/e_os.h>
  81 #include <openssl/x509.h>
  82 #include <openssl/ssl.h>
  83 #include <openssl/err.h>
  84
  85 int CRYPTO_thread_setup(void);
  86 void CRYPTO_thread_cleanup(void);
  87
  88 static void irix_locking_callback(int mode,int type,char *file,int line);
  89 static void solaris_locking_callback(int mode,int type,char *file,int line);
  90 static void win32_locking_callback(int mode,int type,char *file,int line);
  91 static void pthreads_locking_callback(int mode,int type,char *file,int line);
  92
  93 static unsigned long irix_thread_id(void );
  94 static unsigned long solaris_thread_id(void );
  95 static unsigned long pthreads_thread_id(void );
  96
  97 /* usage:
  98  * CRYPTO_thread_setup();
  99  * application code
 100  * CRYPTO_thread_cleanup();
 101  */
 102
 103 #define THREAD_STACK_SIZE (16*1024)
 104
 105 #ifdef WIN32
 106
 107 static HANDLE lock_cs[CRYPTO_NUM_LOCKS];
 108
 109 int CRYPTO_thread_setup(void)
 110         {
 111         int i;
 112
 113         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 114                 {
 115                 lock_cs[i]=CreateMutex(NULL,FALSE,NULL);
 116                 }
 117
 118         CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback);
 119         /* id callback defined */
 120         return(1);
 121         }
 122
 123 static void CRYPTO_thread_cleanup(void)
 124         {
 125         int i;
 126
 127         CRYPTO_set_locking_callback(NULL);
 128         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 129                 CloseHandle(lock_cs[i]);
 130         }
 131
 132 void win32_locking_callback(int mode, int type, char *file, int line)
 133         {
 134         if (mode & CRYPTO_LOCK)
 135                 {
 136                 WaitForSingleObject(lock_cs[type],INFINITE);
 137                 }
 138         else
 139                 {
 140                 ReleaseMutex(lock_cs[type]);
 141                 }
 142         }
 143
 144 #endif /* WIN32 */
 145
 146 #ifdef SOLARIS
 147
 148 #define USE_MUTEX
 149
 150 static mutex_t lock_cs[CRYPTO_NUM_LOCKS];
 151 #ifdef USE_MUTEX
 152 static long lock_count[CRYPTO_NUM_LOCKS];
 153 #else
 154 static rwlock_t lock_cs[CRYPTO_NUM_LOCKS];
 155 #endif
 156
 157 void CRYPTO_thread_setup(void)
 158         {
 159         int i;
 160
 161         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 162                 {
 163                 lock_count[i]=0;
 164 #ifdef USE_MUTEX
 165                 mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 166 #else
 167                 rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 168 #endif
 169                 }
 170
 171         CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
 172         CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
 173         }
 174
 175 void CRYPTO_thread_cleanup(void)
 176         {
 177         int i;
 178
 179         CRYPTO_set_locking_callback(NULL);
 180         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 181                 {
 182 #ifdef USE_MUTEX
 183                 mutex_destroy(&(lock_cs[i]));
 184 #else
 185                 rwlock_destroy(&(lock_cs[i]));
 186 #endif
 187                 }
 188         }
 189
 190 void solaris_locking_callback(int mode, int type, char *file, int line)
 191         {
 192 #if 0
 193         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 194                 CRYPTO_thread_id(),
 195                 (mode&CRYPTO_LOCK)?"l":"u",
 196                 (type&CRYPTO_READ)?"r":"w",file,line);
 197 #endif
 198
 199 #if 0
 200         if (CRYPTO_LOCK_SSL_CERT == type)
 201                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 202                         CRYPTO_thread_id(),
 203                         mode,file,line);
 204 #endif
 205         if (mode & CRYPTO_LOCK)
 206                 {
 207 #ifdef USE_MUTEX
 208                 mutex_lock(&(lock_cs[type]));
 209 #else
 210                 if (mode & CRYPTO_READ)
 211                         rw_rdlock(&(lock_cs[type]));
 212                 else
 213                         rw_wrlock(&(lock_cs[type]));
 214 #endif
 215                 lock_count[type]++;
 216                 }
 217         else
 218                 {
 219 #ifdef USE_MUTEX
 220                 mutex_unlock(&(lock_cs[type]));
 221 #else
 222                 rw_unlock(&(lock_cs[type]));
 223 #endif
 224                 }
 225         }
 226
 227 unsigned long solaris_thread_id(void)
 228         {
 229         unsigned long ret;
 230
 231         ret=(unsigned long)thr_self();
 232         return(ret);
 233         }
 234 #endif /* SOLARIS */
 235
 236 #ifdef IRIX
 237 /* I don't think this works..... */
 238
 239 static usptr_t *arena;
 240 static usema_t *lock_cs[CRYPTO_NUM_LOCKS];
 241
 242 void CRYPTO_thread_setup(void)
 243         {
 244         int i;
 245         char filename[20];
 246
 247         strcpy(filename,"/tmp/mttest.XXXXXX");
 248         mktemp(filename);
 249
 250         usconfig(CONF_STHREADIOOFF);
 251         usconfig(CONF_STHREADMALLOCOFF);
 252         usconfig(CONF_INITUSERS,100);
 253         usconfig(CONF_LOCKTYPE,US_DEBUGPLUS);
 254         arena=usinit(filename);
 255         unlink(filename);
 256
 257         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 258                 {
 259                 lock_cs[i]=usnewsema(arena,1);
 260                 }
 261
 262         CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 263         CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 264         }
 265
 266 void CRYPTO_thread_cleanup(void)
 267         {
 268         int i;
 269
 270         CRYPTO_set_locking_callback(NULL);
 271         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 272                 {
 273                 char buf[10];
 274
 275                 sprintf(buf,"%2d:",i);
 276                 usdumpsema(lock_cs[i],stdout,buf);
 277                 usfreesema(lock_cs[i],arena);
 278                 }
 279         }
 280
 281 void irix_locking_callback(int mode, int type, char *file, int line)
 282         {
 283         if (mode & CRYPTO_LOCK)
 284                 {
 285                 uspsema(lock_cs[type]);
 286                 }
 287         else
 288                 {
 289                 usvsema(lock_cs[type]);
 290                 }
 291         }
 292
 293 unsigned long irix_thread_id(void)
 294         {
 295         unsigned long ret;
 296
 297         ret=(unsigned long)getpid();
 298         return(ret);
 299         }
 300 #endif /* IRIX */
 301
 302 /* Linux and a few others */
 303 #ifdef PTHREADS
 304
 305 static pthread_mutex_t lock_cs[CRYPTO_NUM_LOCKS];
 306 static long lock_count[CRYPTO_NUM_LOCKS];
 307
 308 void CRYPTO_thread_setup(void)
 309         {
 310         int i;
 311
 312         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 313                 {
 314                 lock_count[i]=0;
 315                 pthread_mutex_init(&(lock_cs[i]),NULL);
 316                 }
 317
 318         CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 319         CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 320         }
 321
 322 void thread_cleanup(void)
 323         {
 324         int i;
 325
 326         CRYPTO_set_locking_callback(NULL);
 327         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 328                 {
 329                 pthread_mutex_destroy(&(lock_cs[i]));
 330                 }
 331         }
 332
 333 void pthreads_locking_callback(int mode, int type, char *file,
 334              int line)
 335       {
 336 #if 0
 337         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 338                 CRYPTO_thread_id(),
 339                 (mode&CRYPTO_LOCK)?"l":"u",
 340                 (type&CRYPTO_READ)?"r":"w",file,line);
 341 #endif
 342 #if 0
 343         if (CRYPTO_LOCK_SSL_CERT == type)
 344                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 345                 CRYPTO_thread_id(),
 346                 mode,file,line);
 347 #endif
 348         if (mode & CRYPTO_LOCK)
 349                 {
 350                 pthread_mutex_lock(&(lock_cs[type]));
 351                 lock_count[type]++;
 352                 }
 353         else
 354                 {
 355                 pthread_mutex_unlock(&(lock_cs[type]));
 356                 }
 357         }
 358
 359 unsigned long pthreads_thread_id(void)
 360         {
 361         unsigned long ret;
 362
 363         ret=(unsigned long)pthread_self();
 364         return(ret);
 365         }
 366
 367 #endif /* PTHREADS */
 368