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,int line);
93static void win32_locking_callback(int mode,int type,char *file,int line);
94static void pthreads_locking_callback(int mode,int type,char *file,int line);
95
96static unsigned long irix_thread_id(void );
97static unsigned long solaris_thread_id(void );
98static 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 OPENSSL_SYS_WIN32
109
110static HANDLE *lock_cs;
111
112void 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
127static 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
137void 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 /* 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		{
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
186void 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
203void 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
240unsigned 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
252static usptr_t *arena;
253static usema_t **lock_cs;
254
255void 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
280void 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
296void 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
308unsigned 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
320static pthread_mutex_t *lock_cs;
321static long *lock_count;
322
323void 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
339void 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
352void 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
378unsigned 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
388