Austin Blackstone / Mbed 2 deprecated mbed-client-classic-example-lwip

mbed client on ethernet with LWIP

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by sandbox

mbedtls/source/threading.c@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /*
mbedAustin 11:cada08fc8a70 2 * Threading abstraction layer
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 5 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 6 *
mbedAustin 11:cada08fc8a70 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 8 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 9 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 10 *
mbedAustin 11:cada08fc8a70 11 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 12 *
mbedAustin 11:cada08fc8a70 13 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 16 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 17 * limitations under the License.
mbedAustin 11:cada08fc8a70 18 *
mbedAustin 11:cada08fc8a70 19 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 20 */
mbedAustin 11:cada08fc8a70 21
mbedAustin 11:cada08fc8a70 22 #if !defined(MBEDTLS_CONFIG_FILE)
mbedAustin 11:cada08fc8a70 23 #include "mbedtls/config.h"
mbedAustin 11:cada08fc8a70 24 #else
mbedAustin 11:cada08fc8a70 25 #include MBEDTLS_CONFIG_FILE
mbedAustin 11:cada08fc8a70 26 #endif
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 #if defined(MBEDTLS_THREADING_C)
mbedAustin 11:cada08fc8a70 29
mbedAustin 11:cada08fc8a70 30 #include "mbedtls/threading.h"
mbedAustin 11:cada08fc8a70 31
mbedAustin 11:cada08fc8a70 32 #if defined(MBEDTLS_THREADING_PTHREAD)
mbedAustin 11:cada08fc8a70 33 static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 34 {
mbedAustin 11:cada08fc8a70 35 if( mutex == NULL )
mbedAustin 11:cada08fc8a70 36 return;
mbedAustin 11:cada08fc8a70 37
mbedAustin 11:cada08fc8a70 38 mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0;
mbedAustin 11:cada08fc8a70 39 }
mbedAustin 11:cada08fc8a70 40
mbedAustin 11:cada08fc8a70 41 static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 42 {
mbedAustin 11:cada08fc8a70 43 if( mutex == NULL )
mbedAustin 11:cada08fc8a70 44 return;
mbedAustin 11:cada08fc8a70 45
mbedAustin 11:cada08fc8a70 46 (void) pthread_mutex_destroy( &mutex->mutex );
mbedAustin 11:cada08fc8a70 47 }
mbedAustin 11:cada08fc8a70 48
mbedAustin 11:cada08fc8a70 49 static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 50 {
mbedAustin 11:cada08fc8a70 51 if( mutex == NULL || ! mutex->is_valid )
mbedAustin 11:cada08fc8a70 52 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 53
mbedAustin 11:cada08fc8a70 54 if( pthread_mutex_lock( &mutex->mutex ) != 0 )
mbedAustin 11:cada08fc8a70 55 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
mbedAustin 11:cada08fc8a70 56
mbedAustin 11:cada08fc8a70 57 return( 0 );
mbedAustin 11:cada08fc8a70 58 }
mbedAustin 11:cada08fc8a70 59
mbedAustin 11:cada08fc8a70 60 static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 61 {
mbedAustin 11:cada08fc8a70 62 if( mutex == NULL || ! mutex->is_valid )
mbedAustin 11:cada08fc8a70 63 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 64
mbedAustin 11:cada08fc8a70 65 if( pthread_mutex_unlock( &mutex->mutex ) != 0 )
mbedAustin 11:cada08fc8a70 66 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
mbedAustin 11:cada08fc8a70 67
mbedAustin 11:cada08fc8a70 68 return( 0 );
mbedAustin 11:cada08fc8a70 69 }
mbedAustin 11:cada08fc8a70 70
mbedAustin 11:cada08fc8a70 71 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread;
mbedAustin 11:cada08fc8a70 72 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread;
mbedAustin 11:cada08fc8a70 73 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread;
mbedAustin 11:cada08fc8a70 74 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread;
mbedAustin 11:cada08fc8a70 75
mbedAustin 11:cada08fc8a70 76 /*
mbedAustin 11:cada08fc8a70 77 * With phtreads we can statically initialize mutexes
mbedAustin 11:cada08fc8a70 78 */
mbedAustin 11:cada08fc8a70 79 #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 }
mbedAustin 11:cada08fc8a70 80
mbedAustin 11:cada08fc8a70 81 #endif /* MBEDTLS_THREADING_PTHREAD */
mbedAustin 11:cada08fc8a70 82
mbedAustin 11:cada08fc8a70 83 #if defined(MBEDTLS_THREADING_ALT)
mbedAustin 11:cada08fc8a70 84 static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 85 {
mbedAustin 11:cada08fc8a70 86 ((void) mutex );
mbedAustin 11:cada08fc8a70 87 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 88 }
mbedAustin 11:cada08fc8a70 89 static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex )
mbedAustin 11:cada08fc8a70 90 {
mbedAustin 11:cada08fc8a70 91 ((void) mutex );
mbedAustin 11:cada08fc8a70 92 return;
mbedAustin 11:cada08fc8a70 93 }
mbedAustin 11:cada08fc8a70 94
mbedAustin 11:cada08fc8a70 95 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
mbedAustin 11:cada08fc8a70 96 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
mbedAustin 11:cada08fc8a70 97 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
mbedAustin 11:cada08fc8a70 98 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
mbedAustin 11:cada08fc8a70 99
mbedAustin 11:cada08fc8a70 100 /*
mbedAustin 11:cada08fc8a70 101 * Set functions pointers and initialize global mutexes
mbedAustin 11:cada08fc8a70 102 */
mbedAustin 11:cada08fc8a70 103 void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
mbedAustin 11:cada08fc8a70 104 void (*mutex_free)( mbedtls_threading_mutex_t * ),
mbedAustin 11:cada08fc8a70 105 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
mbedAustin 11:cada08fc8a70 106 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) )
mbedAustin 11:cada08fc8a70 107 {
mbedAustin 11:cada08fc8a70 108 mbedtls_mutex_init = mutex_init;
mbedAustin 11:cada08fc8a70 109 mbedtls_mutex_free = mutex_free;
mbedAustin 11:cada08fc8a70 110 mbedtls_mutex_lock = mutex_lock;
mbedAustin 11:cada08fc8a70 111 mbedtls_mutex_unlock = mutex_unlock;
mbedAustin 11:cada08fc8a70 112
mbedAustin 11:cada08fc8a70 113 mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
mbedAustin 11:cada08fc8a70 114 mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
mbedAustin 11:cada08fc8a70 115 }
mbedAustin 11:cada08fc8a70 116
mbedAustin 11:cada08fc8a70 117 /*
mbedAustin 11:cada08fc8a70 118 * Free global mutexes
mbedAustin 11:cada08fc8a70 119 */
mbedAustin 11:cada08fc8a70 120 void mbedtls_threading_free_alt( void )
mbedAustin 11:cada08fc8a70 121 {
mbedAustin 11:cada08fc8a70 122 mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
mbedAustin 11:cada08fc8a70 123 mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
mbedAustin 11:cada08fc8a70 124 }
mbedAustin 11:cada08fc8a70 125 #endif /* MBEDTLS_THREADING_ALT */
mbedAustin 11:cada08fc8a70 126
mbedAustin 11:cada08fc8a70 127 /*
mbedAustin 11:cada08fc8a70 128 * Define global mutexes
mbedAustin 11:cada08fc8a70 129 */
mbedAustin 11:cada08fc8a70 130 #ifndef MUTEX_INIT
mbedAustin 11:cada08fc8a70 131 #define MUTEX_INIT
mbedAustin 11:cada08fc8a70 132 #endif
mbedAustin 11:cada08fc8a70 133 mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
mbedAustin 11:cada08fc8a70 134 mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
mbedAustin 11:cada08fc8a70 135
mbedAustin 11:cada08fc8a70 136 #endif /* MBEDTLS_THREADING_C */