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 "lhash.h"
  78 #include "crypto.h"
  79 #include "buffer.h"
  80 #include "e_os.h"
  81 #include "x509.h"
  82 #include "ssl.h"
  83 #include "err.h"
  84
  85 #ifndef NOPROTO
  86 int CRYPTO_thread_setup(void);
  87 void CRYPTO_thread_cleanup(void);
  88
  89 static void irix_locking_callback(int mode,int type,char *file,int line);
  90 static void solaris_locking_callback(int mode,int type,char *file,int line);
  91 static void win32_locking_callback(int mode,int type,char *file,int line);
  92 static void pthreads_locking_callback(int mode,int type,char *file,int line);
  93
  94 static unsigned long irix_thread_id(void );
  95 static unsigned long solaris_thread_id(void );
  96 static unsigned long pthreads_thread_id(void );
  97
  98 #else
  99 int CRYPOTO_thread_setup();
 100 void CRYPTO_cleanup();
 101
 102 static void irix_locking_callback();
 103 static void solaris_locking_callback();
 104 static void win32_locking_callback();
 105 static void pthreads_locking_callback();
 106
 107 static unsigned long irix_thread_id();
 108 static unsigned long solaris_thread_id();
 109 static unsigned long pthreads_thread_id();
 110
 111 #endif
 112
 113 /* usage:
 114  * CRYPTO_thread_setup();
 115  * applicaion code
 116  * CRYPTO_thread_cleanup();
 117  */
 118
 119 #define THREAD_STACK_SIZE (16*1024)
 120
 121 #ifdef WIN32
 122
 123 static HANDLE lock_cs[CRYPTO_NUM_LOCKS];
 124
 125 int CRYPTO_thread_setup(void)
 126         {
 127         int i;
 128
 129         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 130                 {
 131                 lock_cs[i]=CreateMutex(NULL,FALSE,NULL);
 132                 }
 133
 134         CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback);
 135         /* id callback defined */
 136         return(1);
 137         }
 138
 139 static void CRYPTO_thread_cleanup(void)
 140         {
 141         int i;
 142
 143         CRYPTO_set_locking_callback(NULL);
 144         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 145                 CloseHandle(lock_cs[i]);
 146         }
 147
 148 void win32_locking_callback(int mode, int type, char *file, int line)
 149         {
 150         if (mode & CRYPTO_LOCK)
 151                 {
 152                 WaitForSingleObject(lock_cs[type],INFINITE);
 153                 }
 154         else
 155                 {
 156                 ReleaseMutex(lock_cs[type]);
 157                 }
 158         }
 159
 160 #endif /* WIN32 */
 161
 162 #ifdef SOLARIS
 163
 164 #define USE_MUTEX
 165
 166 static mutex_t lock_cs[CRYPTO_NUM_LOCKS];
 167 #ifdef USE_MUTEX
 168 static long lock_count[CRYPTO_NUM_LOCKS];
 169 #else
 170 static rwlock_t lock_cs[CRYPTO_NUM_LOCKS];
 171 #endif
 172
 173 void CRYPTO_thread_setup(void)
 174         {
 175         int i;
 176
 177         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 178                 {
 179                 lock_count[i]=0;
 180 #ifdef USE_MUTEX
 181                 mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 182 #else
 183                 rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 184 #endif
 185                 }
 186
 187         CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
 188         CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
 189         }
 190
 191 void CRYPTO_thread_cleanup(void)
 192         {
 193         int i;
 194
 195         CRYPTO_set_locking_callback(NULL);
 196         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 197                 {
 198 #ifdef USE_MUTEX
 199                 mutex_destroy(&(lock_cs[i]));
 200 #else
 201                 rwlock_destroy(&(lock_cs[i]));
 202 #endif
 203                 }
 204         }
 205
 206 void solaris_locking_callback(int mode, int type, char *file, int line)
 207         {
 208 #if 0
 209         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 210                 CRYPTO_thread_id(),
 211                 (mode&CRYPTO_LOCK)?"l":"u",
 212                 (type&CRYPTO_READ)?"r":"w",file,line);
 213 #endif
 214
 215 #if 0
 216         if (CRYPTO_LOCK_SSL_CERT == type)
 217                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 218                         CRYPTO_thread_id(),
 219                         mode,file,line);
 220 #endif
 221         if (mode & CRYPTO_LOCK)
 222                 {
 223 #ifdef USE_MUTEX
 224                 mutex_lock(&(lock_cs[type]));
 225 #else
 226                 if (mode & CRYPTO_READ)
 227                         rw_rdlock(&(lock_cs[type]));
 228                 else
 229                         rw_wrlock(&(lock_cs[type]));
 230 #endif
 231                 lock_count[type]++;
 232                 }
 233         else
 234                 {
 235 #ifdef USE_MUTEX
 236                 mutex_unlock(&(lock_cs[type]));
 237 #else
 238                 rw_unlock(&(lock_cs[type]));
 239 #endif
 240                 }
 241         }
 242
 243 unsigned long solaris_thread_id(void)
 244         {
 245         unsigned long ret;
 246
 247         ret=(unsigned long)thr_self();
 248         return(ret);
 249         }
 250 #endif /* SOLARIS */
 251
 252 #ifdef IRIX
 253 /* I don't think this works..... */
 254
 255 static usptr_t *arena;
 256 static usema_t *lock_cs[CRYPTO_NUM_LOCKS];
 257
 258 void CRYPTO_thread_setup(void)
 259         {
 260         int i;
 261         char filename[20];
 262
 263         strcpy(filename,"/tmp/mttest.XXXXXX");
 264         mktemp(filename);
 265
 266         usconfig(CONF_STHREADIOOFF);
 267         usconfig(CONF_STHREADMALLOCOFF);
 268         usconfig(CONF_INITUSERS,100);
 269         usconfig(CONF_LOCKTYPE,US_DEBUGPLUS);
 270         arena=usinit(filename);
 271         unlink(filename);
 272
 273         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 274                 {
 275                 lock_cs[i]=usnewsema(arena,1);
 276                 }
 277
 278         CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 279         CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 280         }
 281
 282 void CRYPTO_thread_cleanup(void)
 283         {
 284         int i;
 285
 286         CRYPTO_set_locking_callback(NULL);
 287         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 288                 {
 289                 char buf[10];
 290
 291                 sprintf(buf,"%2d:",i);
 292                 usdumpsema(lock_cs[i],stdout,buf);
 293                 usfreesema(lock_cs[i],arena);
 294                 }
 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[CRYPTO_NUM_LOCKS];
 322 static long lock_count[CRYPTO_NUM_LOCKS];
 323
 324 void CRYPTO_thread_setup(void)
 325         {
 326         int i;
 327
 328         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 329                 {
 330                 lock_count[i]=0;
 331                 pthread_mutex_init(&(lock_cs[i]),NULL);
 332                 }
 333
 334         CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 335         CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 336         }
 337
 338 void thread_cleanup(void)
 339         {
 340         int i;
 341
 342         CRYPTO_set_locking_callback(NULL);
 343         for (i=0; i<CRYPTO_NUM_LOCKS; i++)
 344                 {
 345                 pthread_mutex_destroy(&(lock_cs[i]));
 346                 }
 347         }
 348
 349 void pthreads_locking_callback(int mode, int type, char *file,
 350              int line)
 351       {
 352 #if 0
 353         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 354                 CRYPTO_thread_id(),
 355                 (mode&CRYPTO_LOCK)?"l":"u",
 356                 (type&CRYPTO_READ)?"r":"w",file,line);
 357 #endif
 358 #if 0
 359         if (CRYPTO_LOCK_SSL_CERT == type)
 360                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 361                 CRYPTO_thread_id(),
 362                 mode,file,line);
 363 #endif
 364         if (mode & CRYPTO_LOCK)
 365                 {
 366                 pthread_mutex_lock(&(lock_cs[type]));
 367                 lock_count[type]++;
 368                 }
 369         else
 370                 {
 371                 pthread_mutex_unlock(&(lock_cs[type]));
 372                 }
 373         }
 374
 375 unsigned long pthreads_thread_id(void)
 376         {
 377         unsigned long ret;
 378
 379         ret=(unsigned long)pthread_self();
 380         return(ret);
 381         }
 382
 383 #endif /* PTHREADS */
 384