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threading.h
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1
6/*
7 * Copyright The Mbed TLS Contributors
8 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
9 *
10 * This file is provided under the Apache License 2.0, or the
11 * GNU General Public License v2.0 or later.
12 *
13 * **********
14 * Apache License 2.0:
15 *
16 * Licensed under the Apache License, Version 2.0 (the "License"); you may
17 * not use this file except in compliance with the License.
18 * You may obtain a copy of the License at
19 *
20 * http://www.apache.org/licenses/LICENSE-2.0
21 *
22 * Unless required by applicable law or agreed to in writing, software
23 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
24 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
25 * See the License for the specific language governing permissions and
26 * limitations under the License.
27 *
28 * **********
29 *
30 * **********
31 * GNU General Public License v2.0 or later:
32 *
33 * This program is free software; you can redistribute it and/or modify
34 * it under the terms of the GNU General Public License as published by
35 * the Free Software Foundation; either version 2 of the License, or
36 * (at your option) any later version.
37 *
38 * This program is distributed in the hope that it will be useful,
39 * but WITHOUT ANY WARRANTY; without even the implied warranty of
40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 * GNU General Public License for more details.
42 *
43 * You should have received a copy of the GNU General Public License along
44 * with this program; if not, write to the Free Software Foundation, Inc.,
45 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
46 *
47 * **********
48 */
49#ifndef MBEDTLS_THREADING_H
50#define MBEDTLS_THREADING_H
51
52#if !defined(MBEDTLS_CONFIG_FILE)
53#include "config.h"
54#else
55#include MBEDTLS_CONFIG_FILE
56#endif
57
58#include <stdlib.h>
59
60#ifdef __cplusplus
61extern "C" {
62#endif
63
64/* MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE is deprecated and should not be
65 * used. */
66#define MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE -0x001A
68#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA -0x001C
69#define MBEDTLS_ERR_THREADING_MUTEX_ERROR -0x001E
71#if defined(MBEDTLS_THREADING_PTHREAD)
72#include <pthread.h>
73typedef struct mbedtls_threading_mutex_t
74{
75 pthread_mutex_t mutex;
76 /* is_valid is 0 after a failed init or a free, and nonzero after a
77 * successful init. This field is not considered part of the public
78 * API of Mbed TLS and may change without notice. */
79 char is_valid;
80} mbedtls_threading_mutex_t;
81#endif
82
83#if defined(MBEDTLS_THREADING_ALT)
84/* You should define the mbedtls_threading_mutex_t type in your header */
85#include "threading_alt.h"
86
105void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
106 void (*mutex_free)( mbedtls_threading_mutex_t * ),
107 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
108 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) );
109
113void mbedtls_threading_free_alt( void );
114#endif /* MBEDTLS_THREADING_ALT */
115
116#if defined(MBEDTLS_THREADING_C)
117/*
118 * The function pointers for mutex_init, mutex_free, mutex_ and mutex_unlock
119 *
120 * All these functions are expected to work or the result will be undefined.
121 */
122extern void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t *mutex );
123extern void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t *mutex );
124extern int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t *mutex );
125extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
126
127/*
128 * Global mutexes
129 */
130#if defined(MBEDTLS_FS_IO)
131extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
132#endif
133
134#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT)
135/* This mutex may or may not be used in the default definition of
136 * mbedtls_platform_gmtime_r(), but in order to determine that,
137 * we need to check POSIX features, hence modify _POSIX_C_SOURCE.
138 * With the current approach, this declaration is orphaned, lacking
139 * an accompanying definition, in case mbedtls_platform_gmtime_r()
140 * doesn't need it, but that's not a problem. */
141extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
142#endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_R_ALT */
143
144#endif /* MBEDTLS_THREADING_C */
145
146#ifdef __cplusplus
147}
148#endif
149
150#endif /* threading.h */
static BOOL is_valid(HIMAGELIST himl)
Definition: imagelist.c:3998
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31
#define mutex_init(m, a)
Definition: reentrant.h:127
#define mutex_lock(m)
Definition: reentrant.h:128
#define mutex_unlock(m)
Definition: reentrant.h:129
Definition: module.h:456