th-lock.c revision 296341 
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    if (!lock_cs) {
121        /* Nothing we can do about this...void function! */
122        return;
123    }
124    for (i = 0; i < CRYPTO_num_locks(); i++) {
125        lock_cs[i] = CreateMutex(NULL, FALSE, NULL);
126    }
127
128    CRYPTO_set_locking_callback((void (*)(int, int, char *, int))
129                                win32_locking_callback);
130    /* id callback defined */
131    return (1);
132}
133
134static void CRYPTO_thread_cleanup(void)
135{
136    int i;
137
138    CRYPTO_set_locking_callback(NULL);
139    for (i = 0; i < CRYPTO_num_locks(); i++)
140        CloseHandle(lock_cs[i]);
141    OPENSSL_free(lock_cs);
142}
143
144void win32_locking_callback(int mode, int type, char *file, int line)
145{
146    if (mode & CRYPTO_LOCK) {
147        WaitForSingleObject(lock_cs[type], INFINITE);
148    } else {
149        ReleaseMutex(lock_cs[type]);
150    }
151}
152
153#endif                          /* OPENSSL_SYS_WIN32 */
154
155#ifdef SOLARIS
156
157# define USE_MUTEX
158
159# ifdef USE_MUTEX
160static mutex_t *lock_cs;
161# else
162static rwlock_t *lock_cs;
163# endif
164static long *lock_count;
165
166void CRYPTO_thread_setup(void)
167{
168    int i;
169
170# ifdef USE_MUTEX
171    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(mutex_t));
172# else
173    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(rwlock_t));
174# endif
175    if (!lock_cs) {
176        /* Nothing we can do about this...void function! */
177        return;
178    }
179    lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
180    for (i = 0; i < CRYPTO_num_locks(); i++) {
181        lock_count[i] = 0;
182# ifdef USE_MUTEX
183        mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL);
184# else
185        rwlock_init(&(lock_cs[i]), USYNC_THREAD, NULL);
186# endif
187    }
188
189    CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
190    CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
191}
192
193void CRYPTO_thread_cleanup(void)
194{
195    int i;
196
197    CRYPTO_set_locking_callback(NULL);
198    for (i = 0; i < CRYPTO_num_locks(); i++) {
199# ifdef USE_MUTEX
200        mutex_destroy(&(lock_cs[i]));
201# else
202        rwlock_destroy(&(lock_cs[i]));
203# endif
204    }
205    OPENSSL_free(lock_cs);
206    OPENSSL_free(lock_count);
207}
208
209void solaris_locking_callback(int mode, int type, char *file, int line)
210{
211# if 0
212    fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
213            CRYPTO_thread_id(),
214            (mode & CRYPTO_LOCK) ? "l" : "u",
215            (type & CRYPTO_READ) ? "r" : "w", file, line);
216# endif
217
218# if 0
219    if (CRYPTO_LOCK_SSL_CERT == type)
220        fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
221                CRYPTO_thread_id(), mode, file, line);
222# endif
223    if (mode & CRYPTO_LOCK) {
224# ifdef USE_MUTEX
225        mutex_lock(&(lock_cs[type]));
226# else
227        if (mode & CRYPTO_READ)
228            rw_rdlock(&(lock_cs[type]));
229        else
230            rw_wrlock(&(lock_cs[type]));
231# endif
232        lock_count[type]++;
233    } else {
234# ifdef USE_MUTEX
235        mutex_unlock(&(lock_cs[type]));
236# else
237        rw_unlock(&(lock_cs[type]));
238# endif
239    }
240}
241
242unsigned long solaris_thread_id(void)
243{
244    unsigned long ret;
245
246    ret = (unsigned long)thr_self();
247    return (ret);
248}
249#endif                          /* SOLARIS */
250
251#ifdef IRIX
252/* I don't think this works..... */
253
254static usptr_t *arena;
255static usema_t **lock_cs;
256
257void CRYPTO_thread_setup(void)
258{
259    int i;
260    char filename[20];
261
262    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
263    if (!lock_cs) {
264        /* Nothing we can do about this...void function! */
265        return;
266    }
267
268    strcpy(filename, "/tmp/mttest.XXXXXX");
269    mktemp(filename);
270
271    usconfig(CONF_STHREADIOOFF);
272    usconfig(CONF_STHREADMALLOCOFF);
273    usconfig(CONF_INITUSERS, 100);
274    usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
275    arena = usinit(filename);
276    unlink(filename);
277
278    for (i = 0; i < CRYPTO_num_locks(); i++) {
279        lock_cs[i] = usnewsema(arena, 1);
280    }
281
282    CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
283    CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
284}
285
286void CRYPTO_thread_cleanup(void)
287{
288    int i;
289
290    CRYPTO_set_locking_callback(NULL);
291    for (i = 0; i < CRYPTO_num_locks(); i++) {
292        char buf[10];
293
294        sprintf(buf, "%2d:", i);
295        usdumpsema(lock_cs[i], stdout, buf);
296        usfreesema(lock_cs[i], arena);
297    }
298    OPENSSL_free(lock_cs);
299}
300
301void irix_locking_callback(int mode, int type, char *file, int line)
302{
303    if (mode & CRYPTO_LOCK) {
304        uspsema(lock_cs[type]);
305    } else {
306        usvsema(lock_cs[type]);
307    }
308}
309
310unsigned long irix_thread_id(void)
311{
312    unsigned long ret;
313
314    ret = (unsigned long)getpid();
315    return (ret);
316}
317#endif                          /* IRIX */
318
319/* Linux and a few others */
320#ifdef PTHREADS
321
322static pthread_mutex_t *lock_cs;
323static long *lock_count;
324
325void CRYPTO_thread_setup(void)
326{
327    int i;
328
329    lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
330    lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
331    if (!lock_cs || !lock_count) {
332        /* Nothing we can do about this...void function! */
333        if (lock_cs)
334            OPENSSL_free(lock_cs);
335        if (lock_count)
336            OPENSSL_free(lock_count);
337        return;
338    }
339    for (i = 0; i < CRYPTO_num_locks(); i++) {
340        lock_count[i] = 0;
341        pthread_mutex_init(&(lock_cs[i]), NULL);
342    }
343
344    CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
345    CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
346}
347
348void thread_cleanup(void)
349{
350    int i;
351
352    CRYPTO_set_locking_callback(NULL);
353    for (i = 0; i < CRYPTO_num_locks(); i++) {
354        pthread_mutex_destroy(&(lock_cs[i]));
355    }
356    OPENSSL_free(lock_cs);
357    OPENSSL_free(lock_count);
358}
359
360void pthreads_locking_callback(int mode, int type, char *file, int line)
361{
362# if 0
363    fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
364            CRYPTO_thread_id(),
365            (mode & CRYPTO_LOCK) ? "l" : "u",
366            (type & CRYPTO_READ) ? "r" : "w", file, line);
367# endif
368# if 0
369    if (CRYPTO_LOCK_SSL_CERT == type)
370        fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
371                CRYPTO_thread_id(), mode, file, line);
372# endif
373    if (mode & CRYPTO_LOCK) {
374        pthread_mutex_lock(&(lock_cs[type]));
375        lock_count[type]++;
376    } else {
377        pthread_mutex_unlock(&(lock_cs[type]));
378    }
379}
380
381unsigned long pthreads_thread_id(void)
382{
383    unsigned long ret;
384
385    ret = (unsigned long)pthread_self();
386    return (ret);
387}
388
389#endif                          /* PTHREADS */
390