1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
57 #include <openssl/thread.h>
61 #include <openssl/mem.h>
62 #include <openssl/type_check.h>
64 /* lock_names contains the names of all the locks defined in thread.h. */
65 static const char *const lock_names[] = {
66 "<<ERROR>>", "err", "ex_data", "x509",
67 "x509_info", "x509_pkey", "x509_crl", "x509_req",
68 "dsa", "rsa", "evp_pkey", "x509_store",
69 "ssl_ctx", "ssl_cert", "ssl_session", "ssl_sess_cert",
70 "ssl", "ssl_method", "rand", "rand2",
71 "debug_malloc", "BIO", "gethostbyname", "getservbyname",
72 "readdir", "RSA_blinding", "dh", "debug_malloc2",
73 "dso", "dynlock", "engine", "ui",
74 "ecdsa", "ec", "ecdh", "bn",
75 "ec_pre_comp", "store", "comp", "fips",
79 OPENSSL_COMPILE_ASSERT(CRYPTO_NUM_LOCKS ==
80 sizeof(lock_names) / sizeof(lock_names[0]),
81 CRYPTO_NUM_LOCKS_inconsistent);
83 static void (*locking_callback)(int mode, int lock_num, const char *file,
85 static int (*add_lock_callback)(int *pointer, int amount, int lock_num,
86 const char *file, int line) = 0;
87 static void (*threadid_callback)(CRYPTO_THREADID *) = 0;
90 int CRYPTO_num_locks(void) { return CRYPTO_NUM_LOCKS; }
92 void CRYPTO_set_locking_callback(void (*func)(int mode, int lock_num,
93 const char *file, int line)) {
94 locking_callback = func;
97 void CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int lock_num,
98 const char *file, int line)) {
99 add_lock_callback = func;
102 const char *CRYPTO_get_lock_name(int lock_num) {
103 if (lock_num >= 0 && lock_num < CRYPTO_NUM_LOCKS) {
104 return lock_names[lock_num];
110 int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *)) {
111 if (threadid_callback) {
114 threadid_callback = func;
118 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val) {
119 memset(id, 0, sizeof(*id));
123 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr) {
124 memset(id, 0, sizeof(*id));
128 void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
129 const char *file, int line) {
130 return locking_callback;
133 int (*CRYPTO_get_add_lock_callback(void))(int *num, int mount, int lock_num,
134 const char *file, int line) {
135 return add_lock_callback;
138 void CRYPTO_lock(int mode, int lock_num, const char *file, int line) {
139 if (locking_callback != NULL) {
140 locking_callback(mode, lock_num, file, line);
144 int CRYPTO_add_lock(int *pointer, int amount, int lock_num, const char *file,
148 if (add_lock_callback != NULL) {
149 ret = add_lock_callback(pointer, amount, lock_num, file, line);
151 CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, lock_num, file, line);
152 ret = *pointer + amount;
154 CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, lock_num, file, line);
160 void CRYPTO_THREADID_current(CRYPTO_THREADID *id) {
161 if (threadid_callback) {
162 threadid_callback(id);
166 #if defined(OPENSSL_SYS_WIN32)
167 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
169 /* For everything else, default to using the address of 'errno' */
170 CRYPTO_THREADID_set_pointer(id, (void *)&errno);
174 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b) {
175 return memcmp(a, b, sizeof(*a));
178 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src) {
179 memcpy(dest, src, sizeof(*src));
182 uint32_t CRYPTO_THREADID_hash(const CRYPTO_THREADID *id) {
183 return OPENSSL_hash32(id, sizeof(CRYPTO_THREADID));
186 void CRYPTO_set_id_callback(unsigned long (*func)(void)) {}
188 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(
189 *dyn_create_function)(const char *file, int line)) {}
191 void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
192 int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)) {}
194 void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)(
195 struct CRYPTO_dynlock_value *l, const char *file, int line)) {}