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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

features/mbedtls/src/threading.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /*
group-onsemi 0:098463de4c5d 2 * Threading abstraction layer
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
group-onsemi 0:098463de4c5d 5 * SPDX-License-Identifier: Apache-2.0
group-onsemi 0:098463de4c5d 6 *
group-onsemi 0:098463de4c5d 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
group-onsemi 0:098463de4c5d 8 * not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 9 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 12 *
group-onsemi 0:098463de4c5d 13 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
group-onsemi 0:098463de4c5d 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 16 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 17 * limitations under the License.
group-onsemi 0:098463de4c5d 18 *
group-onsemi 0:098463de4c5d 19 * This file is part of mbed TLS (https://tls.mbed.org)
group-onsemi 0:098463de4c5d 20 */
group-onsemi 0:098463de4c5d 21
group-onsemi 0:098463de4c5d 22 #if !defined(MBEDTLS_CONFIG_FILE)
group-onsemi 0:098463de4c5d 23 #include "mbedtls/config.h"
group-onsemi 0:098463de4c5d 24 #else
group-onsemi 0:098463de4c5d 25 #include MBEDTLS_CONFIG_FILE
group-onsemi 0:098463de4c5d 26 #endif
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 #if defined(MBEDTLS_THREADING_C)
group-onsemi 0:098463de4c5d 29
group-onsemi 0:098463de4c5d 30 #include "mbedtls/threading.h"
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 #if defined(MBEDTLS_THREADING_PTHREAD)
group-onsemi 0:098463de4c5d 33 static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 34 {
group-onsemi 0:098463de4c5d 35 if( mutex == NULL || mutex->is_valid )
group-onsemi 0:098463de4c5d 36 return;
group-onsemi 0:098463de4c5d 37
group-onsemi 0:098463de4c5d 38 mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0;
group-onsemi 0:098463de4c5d 39 }
group-onsemi 0:098463de4c5d 40
group-onsemi 0:098463de4c5d 41 static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 42 {
group-onsemi 0:098463de4c5d 43 if( mutex == NULL || !mutex->is_valid )
group-onsemi 0:098463de4c5d 44 return;
group-onsemi 0:098463de4c5d 45
group-onsemi 0:098463de4c5d 46 (void) pthread_mutex_destroy( &mutex->mutex );
group-onsemi 0:098463de4c5d 47 mutex->is_valid = 0;
group-onsemi 0:098463de4c5d 48 }
group-onsemi 0:098463de4c5d 49
group-onsemi 0:098463de4c5d 50 static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 51 {
group-onsemi 0:098463de4c5d 52 if( mutex == NULL || ! mutex->is_valid )
group-onsemi 0:098463de4c5d 53 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 54
group-onsemi 0:098463de4c5d 55 if( pthread_mutex_lock( &mutex->mutex ) != 0 )
group-onsemi 0:098463de4c5d 56 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
group-onsemi 0:098463de4c5d 57
group-onsemi 0:098463de4c5d 58 return( 0 );
group-onsemi 0:098463de4c5d 59 }
group-onsemi 0:098463de4c5d 60
group-onsemi 0:098463de4c5d 61 static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 62 {
group-onsemi 0:098463de4c5d 63 if( mutex == NULL || ! mutex->is_valid )
group-onsemi 0:098463de4c5d 64 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 65
group-onsemi 0:098463de4c5d 66 if( pthread_mutex_unlock( &mutex->mutex ) != 0 )
group-onsemi 0:098463de4c5d 67 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
group-onsemi 0:098463de4c5d 68
group-onsemi 0:098463de4c5d 69 return( 0 );
group-onsemi 0:098463de4c5d 70 }
group-onsemi 0:098463de4c5d 71
group-onsemi 0:098463de4c5d 72 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread;
group-onsemi 0:098463de4c5d 73 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread;
group-onsemi 0:098463de4c5d 74 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread;
group-onsemi 0:098463de4c5d 75 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread;
group-onsemi 0:098463de4c5d 76
group-onsemi 0:098463de4c5d 77 /*
group-onsemi 0:098463de4c5d 78 * With phtreads we can statically initialize mutexes
group-onsemi 0:098463de4c5d 79 */
group-onsemi 0:098463de4c5d 80 #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 }
group-onsemi 0:098463de4c5d 81
group-onsemi 0:098463de4c5d 82 #endif /* MBEDTLS_THREADING_PTHREAD */
group-onsemi 0:098463de4c5d 83
group-onsemi 0:098463de4c5d 84 #if defined(MBEDTLS_THREADING_ALT)
group-onsemi 0:098463de4c5d 85 static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 86 {
group-onsemi 0:098463de4c5d 87 ((void) mutex );
group-onsemi 0:098463de4c5d 88 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 89 }
group-onsemi 0:098463de4c5d 90 static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex )
group-onsemi 0:098463de4c5d 91 {
group-onsemi 0:098463de4c5d 92 ((void) mutex );
group-onsemi 0:098463de4c5d 93 return;
group-onsemi 0:098463de4c5d 94 }
group-onsemi 0:098463de4c5d 95
group-onsemi 0:098463de4c5d 96 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
group-onsemi 0:098463de4c5d 97 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
group-onsemi 0:098463de4c5d 98 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
group-onsemi 0:098463de4c5d 99 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
group-onsemi 0:098463de4c5d 100
group-onsemi 0:098463de4c5d 101 /*
group-onsemi 0:098463de4c5d 102 * Set functions pointers and initialize global mutexes
group-onsemi 0:098463de4c5d 103 */
group-onsemi 0:098463de4c5d 104 void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
group-onsemi 0:098463de4c5d 105 void (*mutex_free)( mbedtls_threading_mutex_t * ),
group-onsemi 0:098463de4c5d 106 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
group-onsemi 0:098463de4c5d 107 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) )
group-onsemi 0:098463de4c5d 108 {
group-onsemi 0:098463de4c5d 109 mbedtls_mutex_init = mutex_init;
group-onsemi 0:098463de4c5d 110 mbedtls_mutex_free = mutex_free;
group-onsemi 0:098463de4c5d 111 mbedtls_mutex_lock = mutex_lock;
group-onsemi 0:098463de4c5d 112 mbedtls_mutex_unlock = mutex_unlock;
group-onsemi 0:098463de4c5d 113
group-onsemi 0:098463de4c5d 114 mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
group-onsemi 0:098463de4c5d 115 mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
group-onsemi 0:098463de4c5d 116 }
group-onsemi 0:098463de4c5d 117
group-onsemi 0:098463de4c5d 118 /*
group-onsemi 0:098463de4c5d 119 * Free global mutexes
group-onsemi 0:098463de4c5d 120 */
group-onsemi 0:098463de4c5d 121 void mbedtls_threading_free_alt( void )
group-onsemi 0:098463de4c5d 122 {
group-onsemi 0:098463de4c5d 123 mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
group-onsemi 0:098463de4c5d 124 mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
group-onsemi 0:098463de4c5d 125 }
group-onsemi 0:098463de4c5d 126 #endif /* MBEDTLS_THREADING_ALT */
group-onsemi 0:098463de4c5d 127
group-onsemi 0:098463de4c5d 128 /*
group-onsemi 0:098463de4c5d 129 * Define global mutexes
group-onsemi 0:098463de4c5d 130 */
group-onsemi 0:098463de4c5d 131 #ifndef MUTEX_INIT
group-onsemi 0:098463de4c5d 132 #define MUTEX_INIT
group-onsemi 0:098463de4c5d 133 #endif
group-onsemi 0:098463de4c5d 134 mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
group-onsemi 0:098463de4c5d 135 mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
group-onsemi 0:098463de4c5d 136
group-onsemi 0:098463de4c5d 137 #endif /* MBEDTLS_THREADING_C */