th-lock.c revision 296465 
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
88void CRYPTO_thread_setup(void);
89void CRYPTO_thread_cleanup(void);
90
91static void irix_locking_callback(int mode, int type, char *file, int line);
92static void solaris_locking_callback(int mode, int type, char *file,
93                                     int line);
94static void win32_locking_callback(int mode, int type, char *file, int line);
95static void pthreads_locking_callback(int mode, int type, char *file,
96                                      int line);
97
98static unsigned long irix_thread_id(void);
99static unsigned long solaris_thread_id(void);
100static 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
113static HANDLE *lock_cs;
114
115void CRYPTO_thread_setup(void)
116{
117    int i;
118
119    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));
120    for (i = 0; i < CRYPTO_num_locks(); i++) {
121        lock_cs[i] = CreateMutex(NULL, FALSE, NULL);
122    }
123
124    CRYPTO_set_locking_callback((void (*)(int, int, char *, int))
125                                win32_locking_callback);
126    /* id callback defined */
127    return (1);
128}
129
130static void CRYPTO_thread_cleanup(void)
131{
132    int i;
133
134    CRYPTO_set_locking_callback(NULL);
135    for (i = 0; i < CRYPTO_num_locks(); i++)
136        CloseHandle(lock_cs[i]);
137    OPENSSL_free(lock_cs);
138}
139
140void win32_locking_callback(int mode, int type, char *file, int line)
141{
142    if (mode & CRYPTO_LOCK) {
143        WaitForSingleObject(lock_cs[type], INFINITE);
144    } else {
145        ReleaseMutex(lock_cs[type]);
146    }
147}
148
149#endif                          /* OPENSSL_SYS_WIN32 */
150
151#ifdef SOLARIS
152
153# define USE_MUTEX
154
155# ifdef USE_MUTEX
156static mutex_t *lock_cs;
157# else
158static rwlock_t *lock_cs;
159# endif
160static long *lock_count;
161
162void 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        lock_count[i] = 0;
174# ifdef USE_MUTEX
175        mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL);
176# else
177        rwlock_init(&(lock_cs[i]), USYNC_THREAD, NULL);
178# endif
179    }
180
181    CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
182    CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
183}
184
185void CRYPTO_thread_cleanup(void)
186{
187    int i;
188
189    CRYPTO_set_locking_callback(NULL);
190    for (i = 0; i < CRYPTO_num_locks(); i++) {
191# ifdef USE_MUTEX
192        mutex_destroy(&(lock_cs[i]));
193# else
194        rwlock_destroy(&(lock_cs[i]));
195# endif
196    }
197    OPENSSL_free(lock_cs);
198    OPENSSL_free(lock_count);
199}
200
201void solaris_locking_callback(int mode, int type, char *file, int line)
202{
203# if 0
204    fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
205            CRYPTO_thread_id(),
206            (mode & CRYPTO_LOCK) ? "l" : "u",
207            (type & CRYPTO_READ) ? "r" : "w", file, line);
208# endif
209
210# if 0
211    if (CRYPTO_LOCK_SSL_CERT == type)
212        fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
213                CRYPTO_thread_id(), mode, file, line);
214# endif
215    if (mode & CRYPTO_LOCK) {
216# ifdef USE_MUTEX
217        mutex_lock(&(lock_cs[type]));
218# else
219        if (mode & CRYPTO_READ)
220            rw_rdlock(&(lock_cs[type]));
221        else
222            rw_wrlock(&(lock_cs[type]));
223# endif
224        lock_count[type]++;
225    } else {
226# ifdef USE_MUTEX
227        mutex_unlock(&(lock_cs[type]));
228# else
229        rw_unlock(&(lock_cs[type]));
230# endif
231    }
232}
233
234unsigned long solaris_thread_id(void)
235{
236    unsigned long ret;
237
238    ret = (unsigned long)thr_self();
239    return (ret);
240}
241#endif                          /* SOLARIS */
242
243#ifdef IRIX
244/* I don't think this works..... */
245
246static usptr_t *arena;
247static usema_t **lock_cs;
248
249void CRYPTO_thread_setup(void)
250{
251    int i;
252    char filename[20];
253
254    strcpy(filename, "/tmp/mttest.XXXXXX");
255    mktemp(filename);
256
257    usconfig(CONF_STHREADIOOFF);
258    usconfig(CONF_STHREADMALLOCOFF);
259    usconfig(CONF_INITUSERS, 100);
260    usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
261    arena = usinit(filename);
262    unlink(filename);
263
264    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
265    for (i = 0; i < CRYPTO_num_locks(); i++) {
266        lock_cs[i] = usnewsema(arena, 1);
267    }
268
269    CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
270    CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
271}
272
273void CRYPTO_thread_cleanup(void)
274{
275    int i;
276
277    CRYPTO_set_locking_callback(NULL);
278    for (i = 0; i < CRYPTO_num_locks(); i++) {
279        char buf[10];
280
281        sprintf(buf, "%2d:", i);
282        usdumpsema(lock_cs[i], stdout, buf);
283        usfreesema(lock_cs[i], arena);
284    }
285    OPENSSL_free(lock_cs);
286}
287
288void irix_locking_callback(int mode, int type, char *file, int line)
289{
290    if (mode & CRYPTO_LOCK) {
291        uspsema(lock_cs[type]);
292    } else {
293        usvsema(lock_cs[type]);
294    }
295}
296
297unsigned long irix_thread_id(void)
298{
299    unsigned long ret;
300
301    ret = (unsigned long)getpid();
302    return (ret);
303}
304#endif                          /* IRIX */
305
306/* Linux and a few others */
307#ifdef PTHREADS
308
309static pthread_mutex_t *lock_cs;
310static long *lock_count;
311
312void CRYPTO_thread_setup(void)
313{
314    int i;
315
316    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
317    lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
318    for (i = 0; i < CRYPTO_num_locks(); i++) {
319        lock_count[i] = 0;
320        pthread_mutex_init(&(lock_cs[i]), NULL);
321    }
322
323    CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
324    CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
325}
326
327void thread_cleanup(void)
328{
329    int i;
330
331    CRYPTO_set_locking_callback(NULL);
332    for (i = 0; i < CRYPTO_num_locks(); i++) {
333        pthread_mutex_destroy(&(lock_cs[i]));
334    }
335    OPENSSL_free(lock_cs);
336    OPENSSL_free(lock_count);
337}
338
339void pthreads_locking_callback(int mode, int type, char *file, int line)
340{
341# if 0
342    fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
343            CRYPTO_thread_id(),
344            (mode & CRYPTO_LOCK) ? "l" : "u",
345            (type & CRYPTO_READ) ? "r" : "w", file, line);
346# endif
347# if 0
348    if (CRYPTO_LOCK_SSL_CERT == type)
349        fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
350                CRYPTO_thread_id(), mode, file, line);
351# endif
352    if (mode & CRYPTO_LOCK) {
353        pthread_mutex_lock(&(lock_cs[type]));
354        lock_count[type]++;
355    } else {
356        pthread_mutex_unlock(&(lock_cs[type]));
357    }
358}
359
360unsigned long pthreads_thread_id(void)
361{
362    unsigned long ret;
363
364    ret = (unsigned long)pthread_self();
365    return (ret);
366}
367
368#endif                          /* PTHREADS */
369