th-lock.c revision 55714 
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
85int CRYPTO_thread_setup(void);
86void CRYPTO_thread_cleanup(void);
87
88static void irix_locking_callback(int mode,int type,char *file,int line);
89static void solaris_locking_callback(int mode,int type,char *file,int line);
90static void win32_locking_callback(int mode,int type,char *file,int line);
91static void pthreads_locking_callback(int mode,int type,char *file,int line);
92
93static unsigned long irix_thread_id(void );
94static unsigned long solaris_thread_id(void );
95static unsigned long pthreads_thread_id(void );
96
97/* usage:
98 * CRYPTO_thread_setup();
99 * applicaion code
100 * CRYPTO_thread_cleanup();
101 */
102
103#define THREAD_STACK_SIZE (16*1024)
104
105#ifdef WIN32
106
107static HANDLE lock_cs[CRYPTO_NUM_LOCKS];
108
109int 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
123static 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
132void 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
150static mutex_t lock_cs[CRYPTO_NUM_LOCKS];
151#ifdef USE_MUTEX
152static long lock_count[CRYPTO_NUM_LOCKS];
153#else
154static rwlock_t lock_cs[CRYPTO_NUM_LOCKS];
155#endif
156
157void 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
175void 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
190void 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
227unsigned 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
239static usptr_t *arena;
240static usema_t *lock_cs[CRYPTO_NUM_LOCKS];
241
242void 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
266void 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
281void 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
293unsigned 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
305static pthread_mutex_t lock_cs[CRYPTO_NUM_LOCKS];
306static long lock_count[CRYPTO_NUM_LOCKS];
307
308void 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
322void 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
333void 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
359unsigned 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
369