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 #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 <openssl/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 /* usage:
 101  * CRYPTO_thread_setup();
 102  * application code
 103  * CRYPTO_thread_cleanup();
 104  */
 105
 106 #define THREAD_STACK_SIZE (16*1024)
 107
 108 #ifdef WIN32
 109
 110 static HANDLE *lock_cs;
 111
 112 void CRYPTO_thread_setup(void)
 113         {
 114         int i;
 115
 116         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));
 117         for (i=0; i<CRYPTO_num_locks(); i++)
 118                 {
 119                 lock_cs[i]=CreateMutex(NULL,FALSE,NULL);
 120                 }
 121
 122         CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback);
 123         /* id callback defined */
 124         return(1);
 125         }
 126
 127 static void CRYPTO_thread_cleanup(void)
 128         {
 129         int i;
 130
 131         CRYPTO_set_locking_callback(NULL);
 132         for (i=0; i<CRYPTO_num_locks(); i++)
 133                 CloseHandle(lock_cs[i]);
 134         OPENSSL_free(lock_cs);
 135         }
 136
 137 void win32_locking_callback(int mode, int type, char *file, int line)
 138         {
 139         if (mode & CRYPTO_LOCK)
 140                 {
 141                 WaitForSingleObject(lock_cs[type],INFINITE);
 142                 }
 143         else
 144                 {
 145                 ReleaseMutex(lock_cs[type]);
 146                 }
 147         }
 148
 149 #endif /* 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                 {
 174                 lock_count[i]=0;
 175 #ifdef USE_MUTEX
 176                 mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 177 #else
 178                 rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL);
 179 #endif
 180                 }
 181
 182         CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
 183         CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
 184         }
 185
 186 void CRYPTO_thread_cleanup(void)
 187         {
 188         int i;
 189
 190         CRYPTO_set_locking_callback(NULL);
 191         for (i=0; i<CRYPTO_num_locks(); i++)
 192                 {
 193 #ifdef USE_MUTEX
 194                 mutex_destroy(&(lock_cs[i]));
 195 #else
 196                 rwlock_destroy(&(lock_cs[i]));
 197 #endif
 198                 }
 199         OPENSSL_free(lock_cs);
 200         OPENSSL_free(lock_count);
 201         }
 202
 203 void solaris_locking_callback(int mode, int type, char *file, int line)
 204         {
 205 #if 0
 206         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 207                 CRYPTO_thread_id(),
 208                 (mode&CRYPTO_LOCK)?"l":"u",
 209                 (type&CRYPTO_READ)?"r":"w",file,line);
 210 #endif
 211
 212 #if 0
 213         if (CRYPTO_LOCK_SSL_CERT == type)
 214                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 215                         CRYPTO_thread_id(),
 216                         mode,file,line);
 217 #endif
 218         if (mode & CRYPTO_LOCK)
 219                 {
 220 #ifdef USE_MUTEX
 221                 mutex_lock(&(lock_cs[type]));
 222 #else
 223                 if (mode & CRYPTO_READ)
 224                         rw_rdlock(&(lock_cs[type]));
 225                 else
 226                         rw_wrlock(&(lock_cs[type]));
 227 #endif
 228                 lock_count[type]++;
 229                 }
 230         else
 231                 {
 232 #ifdef USE_MUTEX
 233                 mutex_unlock(&(lock_cs[type]));
 234 #else
 235                 rw_unlock(&(lock_cs[type]));
 236 #endif
 237                 }
 238         }
 239
 240 unsigned long solaris_thread_id(void)
 241         {
 242         unsigned long ret;
 243
 244         ret=(unsigned long)thr_self();
 245         return(ret);
 246         }
 247 #endif /* SOLARIS */
 248
 249 #ifdef IRIX
 250 /* I don't think this works..... */
 251
 252 static usptr_t *arena;
 253 static usema_t **lock_cs;
 254
 255 void CRYPTO_thread_setup(void)
 256         {
 257         int i;
 258         char filename[20];
 259
 260         strcpy(filename,"/tmp/mttest.XXXXXX");
 261         mktemp(filename);
 262
 263         usconfig(CONF_STHREADIOOFF);
 264         usconfig(CONF_STHREADMALLOCOFF);
 265         usconfig(CONF_INITUSERS,100);
 266         usconfig(CONF_LOCKTYPE,US_DEBUGPLUS);
 267         arena=usinit(filename);
 268         unlink(filename);
 269
 270         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
 271         for (i=0; i<CRYPTO_num_locks(); i++)
 272                 {
 273                 lock_cs[i]=usnewsema(arena,1);
 274                 }
 275
 276         CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
 277         CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
 278         }
 279
 280 void CRYPTO_thread_cleanup(void)
 281         {
 282         int i;
 283
 284         CRYPTO_set_locking_callback(NULL);
 285         for (i=0; i<CRYPTO_num_locks(); i++)
 286                 {
 287                 char buf[10];
 288
 289                 sprintf(buf,"%2d:",i);
 290                 usdumpsema(lock_cs[i],stdout,buf);
 291                 usfreesema(lock_cs[i],arena);
 292                 }
 293         OPENSSL_free(lock_cs);
 294         }
 295
 296 void irix_locking_callback(int mode, int type, char *file, int line)
 297         {
 298         if (mode & CRYPTO_LOCK)
 299                 {
 300                 uspsema(lock_cs[type]);
 301                 }
 302         else
 303                 {
 304                 usvsema(lock_cs[type]);
 305                 }
 306         }
 307
 308 unsigned long irix_thread_id(void)
 309         {
 310         unsigned long ret;
 311
 312         ret=(unsigned long)getpid();
 313         return(ret);
 314         }
 315 #endif /* IRIX */
 316
 317 /* Linux and a few others */
 318 #ifdef PTHREADS
 319
 320 static pthread_mutex_t *lock_cs;
 321 static long *lock_count;
 322
 323 void CRYPTO_thread_setup(void)
 324         {
 325         int i;
 326
 327         lock_cs=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
 328         lock_count=OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
 329         for (i=0; i<CRYPTO_num_locks(); i++)
 330                 {
 331                 lock_count[i]=0;
 332                 pthread_mutex_init(&(lock_cs[i]),NULL);
 333                 }
 334
 335         CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
 336         CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
 337         }
 338
 339 void thread_cleanup(void)
 340         {
 341         int i;
 342
 343         CRYPTO_set_locking_callback(NULL);
 344         for (i=0; i<CRYPTO_num_locks(); i++)
 345                 {
 346                 pthread_mutex_destroy(&(lock_cs[i]));
 347                 }
 348         OPENSSL_free(lock_cs);
 349         OPENSSL_free(lock_count);
 350         }
 351
 352 void pthreads_locking_callback(int mode, int type, char *file,
 353              int line)
 354       {
 355 #if 0
 356         fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
 357                 CRYPTO_thread_id(),
 358                 (mode&CRYPTO_LOCK)?"l":"u",
 359                 (type&CRYPTO_READ)?"r":"w",file,line);
 360 #endif
 361 #if 0
 362         if (CRYPTO_LOCK_SSL_CERT == type)
 363                 fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
 364                 CRYPTO_thread_id(),
 365                 mode,file,line);
 366 #endif
 367         if (mode & CRYPTO_LOCK)
 368                 {
 369                 pthread_mutex_lock(&(lock_cs[type]));
 370                 lock_count[type]++;
 371                 }
 372         else
 373                 {
 374                 pthread_mutex_unlock(&(lock_cs[type]));
 375                 }
 376         }
 377
 378 unsigned long pthreads_thread_id(void)
 379         {
 380         unsigned long ret;
 381
 382         ret=(unsigned long)pthread_self();
 383         return(ret);
 384         }
 385
 386 #endif /* PTHREADS */
 387