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62867571 RS |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
71a04cfc | 3 | * |
62867571 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
71a04cfc AG |
8 | */ |
9 | ||
10 | #include <openssl/crypto.h> | |
71a04cfc AG |
11 | |
12 | #if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG) | |
13 | ||
14 | CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void) | |
15 | { | |
16 | CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(unsigned int)); | |
17 | if (lock == NULL) | |
18 | return NULL; | |
19 | ||
20 | *(unsigned int *)lock = 1; | |
21 | ||
22 | return lock; | |
23 | } | |
24 | ||
25 | int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock) | |
26 | { | |
27 | OPENSSL_assert(*(unsigned int *)lock == 1); | |
28 | return 1; | |
29 | } | |
30 | ||
31 | int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock) | |
32 | { | |
33 | OPENSSL_assert(*(unsigned int *)lock == 1); | |
34 | return 1; | |
35 | } | |
36 | ||
37 | int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock) | |
38 | { | |
39 | OPENSSL_assert(*(unsigned int *)lock == 1); | |
40 | return 1; | |
41 | } | |
42 | ||
43 | void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) { | |
44 | if (lock == NULL) | |
45 | return; | |
46 | ||
47 | *(unsigned int *)lock = 0; | |
48 | OPENSSL_free(lock); | |
49 | ||
50 | return; | |
51 | } | |
52 | ||
53 | int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void)) | |
54 | { | |
55 | if (*once != 0) | |
56 | return 1; | |
57 | ||
58 | init(); | |
59 | *once = 1; | |
60 | ||
61 | return 1; | |
62 | } | |
63 | ||
64 | #define OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX 256 | |
65 | ||
66 | static void *thread_local_storage[OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX]; | |
67 | ||
68 | int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *)) | |
69 | { | |
70 | static unsigned int thread_local_key = 0; | |
71 | ||
72 | if (thread_local_key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX) | |
73 | return 0; | |
74 | ||
75 | *key = thread_local_key++; | |
76 | ||
77 | thread_local_storage[*key] = NULL; | |
78 | ||
79 | return 1; | |
80 | } | |
81 | ||
82 | void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key) | |
83 | { | |
84 | if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX) | |
85 | return NULL; | |
86 | ||
87 | return thread_local_storage[*key]; | |
88 | } | |
89 | ||
90 | int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val) | |
91 | { | |
92 | if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX) | |
93 | return 0; | |
94 | ||
95 | thread_local_storage[*key] = val; | |
96 | ||
97 | return 1; | |
98 | } | |
99 | ||
100 | int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key) | |
101 | { | |
102 | *key = OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX + 1; | |
103 | return 1; | |
104 | } | |
105 | ||
106 | CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void) | |
107 | { | |
108 | return 0; | |
109 | } | |
110 | ||
111 | int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b) | |
112 | { | |
113 | return (a == b); | |
114 | } | |
115 | ||
116 | int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock) | |
117 | { | |
118 | *val += amount; | |
119 | *ret = *val; | |
120 | ||
121 | return 1; | |
122 | } | |
123 | ||
124 | #endif |