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Merge pull request #969 from pwpiwi/gcc10_fixes
[proxmark3-svn] / common / mbedtls / threading.h
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1/**
2 * \file threading.h
3 *
4 * \brief Threading abstraction layer
5 */
6/*
7 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
8 * SPDX-License-Identifier: GPL-2.0
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 *
24 * This file is part of mbed TLS (https://tls.mbed.org)
25 */
26#ifndef MBEDTLS_THREADING_H
27#define MBEDTLS_THREADING_H
28
29#if !defined(MBEDTLS_CONFIG_FILE)
30#include "config.h"
31#else
32#include MBEDTLS_CONFIG_FILE
33#endif
34
35#include <stdlib.h>
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41#define MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE -0x001A /**< The selected feature is not available. */
42#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA -0x001C /**< Bad input parameters to function. */
43#define MBEDTLS_ERR_THREADING_MUTEX_ERROR -0x001E /**< Locking / unlocking / free failed with error code. */
44
45#if defined(MBEDTLS_THREADING_PTHREAD)
46#include <pthread.h>
47typedef struct mbedtls_threading_mutex_t
48{
49 pthread_mutex_t mutex;
50 char is_valid;
51} mbedtls_threading_mutex_t;
52#endif
53
54#if defined(MBEDTLS_THREADING_ALT)
55/* You should define the mbedtls_threading_mutex_t type in your header */
56#include "threading_alt.h"
57
58/**
59 * \brief Set your alternate threading implementation function
60 * pointers and initialize global mutexes. If used, this
61 * function must be called once in the main thread before any
62 * other mbed TLS function is called, and
63 * mbedtls_threading_free_alt() must be called once in the main
64 * thread after all other mbed TLS functions.
65 *
66 * \note mutex_init() and mutex_free() don't return a status code.
67 * If mutex_init() fails, it should leave its argument (the
68 * mutex) in a state such that mutex_lock() will fail when
69 * called with this argument.
70 *
71 * \param mutex_init the init function implementation
72 * \param mutex_free the free function implementation
73 * \param mutex_lock the lock function implementation
74 * \param mutex_unlock the unlock function implementation
75 */
76void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
77 void (*mutex_free)( mbedtls_threading_mutex_t * ),
78 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
79 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) );
80
81/**
82 * \brief Free global mutexes.
83 */
84void mbedtls_threading_free_alt( void );
85#endif /* MBEDTLS_THREADING_ALT */
86
87#if defined(MBEDTLS_THREADING_C)
88/*
89 * The function pointers for mutex_init, mutex_free, mutex_ and mutex_unlock
90 *
91 * All these functions are expected to work or the result will be undefined.
92 */
93extern void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t *mutex );
94extern void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t *mutex );
95extern int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t *mutex );
96extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
97
98/*
99 * Global mutexes
100 */
101#if defined(MBEDTLS_FS_IO)
102extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
103#endif
104#endif /* MBEDTLS_THREADING_C */
105
106#ifdef __cplusplus
107}
108#endif
109
110#endif /* threading.h */
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