erkin yucel / mbed-os

mbed os with nrf51 internal bandgap enabled to read battery level

Dependents:   BLE_file_test BLE_Blink ExternalEncoder

features/mbedtls/src/threading.c@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /*
elessair 0:f269e3021894 2 * Threading abstraction layer
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
elessair 0:f269e3021894 5 * SPDX-License-Identifier: Apache-2.0
elessair 0:f269e3021894 6 *
elessair 0:f269e3021894 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
elessair 0:f269e3021894 8 * not use this file except in compliance with the License.
elessair 0:f269e3021894 9 * You may obtain a copy of the License at
elessair 0:f269e3021894 10 *
elessair 0:f269e3021894 11 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 12 *
elessair 0:f269e3021894 13 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
elessair 0:f269e3021894 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 16 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 17 * limitations under the License.
elessair 0:f269e3021894 18 *
elessair 0:f269e3021894 19 * This file is part of mbed TLS (https://tls.mbed.org)
elessair 0:f269e3021894 20 */
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 #if !defined(MBEDTLS_CONFIG_FILE)
elessair 0:f269e3021894 23 #include "mbedtls/config.h"
elessair 0:f269e3021894 24 #else
elessair 0:f269e3021894 25 #include MBEDTLS_CONFIG_FILE
elessair 0:f269e3021894 26 #endif
elessair 0:f269e3021894 27
elessair 0:f269e3021894 28 #if defined(MBEDTLS_THREADING_C)
elessair 0:f269e3021894 29
elessair 0:f269e3021894 30 #include "mbedtls/threading.h"
elessair 0:f269e3021894 31
elessair 0:f269e3021894 32 #if defined(MBEDTLS_THREADING_PTHREAD)
elessair 0:f269e3021894 33 static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 34 {
elessair 0:f269e3021894 35 if( mutex == NULL || mutex->is_valid )
elessair 0:f269e3021894 36 return;
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0;
elessair 0:f269e3021894 39 }
elessair 0:f269e3021894 40
elessair 0:f269e3021894 41 static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 42 {
elessair 0:f269e3021894 43 if( mutex == NULL || !mutex->is_valid )
elessair 0:f269e3021894 44 return;
elessair 0:f269e3021894 45
elessair 0:f269e3021894 46 (void) pthread_mutex_destroy( &mutex->mutex );
elessair 0:f269e3021894 47 mutex->is_valid = 0;
elessair 0:f269e3021894 48 }
elessair 0:f269e3021894 49
elessair 0:f269e3021894 50 static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 51 {
elessair 0:f269e3021894 52 if( mutex == NULL || ! mutex->is_valid )
elessair 0:f269e3021894 53 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
elessair 0:f269e3021894 54
elessair 0:f269e3021894 55 if( pthread_mutex_lock( &mutex->mutex ) != 0 )
elessair 0:f269e3021894 56 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
elessair 0:f269e3021894 57
elessair 0:f269e3021894 58 return( 0 );
elessair 0:f269e3021894 59 }
elessair 0:f269e3021894 60
elessair 0:f269e3021894 61 static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 62 {
elessair 0:f269e3021894 63 if( mutex == NULL || ! mutex->is_valid )
elessair 0:f269e3021894 64 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
elessair 0:f269e3021894 65
elessair 0:f269e3021894 66 if( pthread_mutex_unlock( &mutex->mutex ) != 0 )
elessair 0:f269e3021894 67 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
elessair 0:f269e3021894 68
elessair 0:f269e3021894 69 return( 0 );
elessair 0:f269e3021894 70 }
elessair 0:f269e3021894 71
elessair 0:f269e3021894 72 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread;
elessair 0:f269e3021894 73 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread;
elessair 0:f269e3021894 74 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread;
elessair 0:f269e3021894 75 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread;
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77 /*
elessair 0:f269e3021894 78 * With phtreads we can statically initialize mutexes
elessair 0:f269e3021894 79 */
elessair 0:f269e3021894 80 #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 }
elessair 0:f269e3021894 81
elessair 0:f269e3021894 82 #endif /* MBEDTLS_THREADING_PTHREAD */
elessair 0:f269e3021894 83
elessair 0:f269e3021894 84 #if defined(MBEDTLS_THREADING_ALT)
elessair 0:f269e3021894 85 static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 86 {
elessair 0:f269e3021894 87 ((void) mutex );
elessair 0:f269e3021894 88 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
elessair 0:f269e3021894 89 }
elessair 0:f269e3021894 90 static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex )
elessair 0:f269e3021894 91 {
elessair 0:f269e3021894 92 ((void) mutex );
elessair 0:f269e3021894 93 return;
elessair 0:f269e3021894 94 }
elessair 0:f269e3021894 95
elessair 0:f269e3021894 96 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
elessair 0:f269e3021894 97 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
elessair 0:f269e3021894 98 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
elessair 0:f269e3021894 99 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
elessair 0:f269e3021894 100
elessair 0:f269e3021894 101 /*
elessair 0:f269e3021894 102 * Set functions pointers and initialize global mutexes
elessair 0:f269e3021894 103 */
elessair 0:f269e3021894 104 void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
elessair 0:f269e3021894 105 void (*mutex_free)( mbedtls_threading_mutex_t * ),
elessair 0:f269e3021894 106 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
elessair 0:f269e3021894 107 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) )
elessair 0:f269e3021894 108 {
elessair 0:f269e3021894 109 mbedtls_mutex_init = mutex_init;
elessair 0:f269e3021894 110 mbedtls_mutex_free = mutex_free;
elessair 0:f269e3021894 111 mbedtls_mutex_lock = mutex_lock;
elessair 0:f269e3021894 112 mbedtls_mutex_unlock = mutex_unlock;
elessair 0:f269e3021894 113
elessair 0:f269e3021894 114 mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
elessair 0:f269e3021894 115 mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
elessair 0:f269e3021894 116 }
elessair 0:f269e3021894 117
elessair 0:f269e3021894 118 /*
elessair 0:f269e3021894 119 * Free global mutexes
elessair 0:f269e3021894 120 */
elessair 0:f269e3021894 121 void mbedtls_threading_free_alt( void )
elessair 0:f269e3021894 122 {
elessair 0:f269e3021894 123 mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
elessair 0:f269e3021894 124 mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
elessair 0:f269e3021894 125 }
elessair 0:f269e3021894 126 #endif /* MBEDTLS_THREADING_ALT */
elessair 0:f269e3021894 127
elessair 0:f269e3021894 128 /*
elessair 0:f269e3021894 129 * Define global mutexes
elessair 0:f269e3021894 130 */
elessair 0:f269e3021894 131 #ifndef MUTEX_INIT
elessair 0:f269e3021894 132 #define MUTEX_INIT
elessair 0:f269e3021894 133 #endif
elessair 0:f269e3021894 134 mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
elessair 0:f269e3021894 135 mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
elessair 0:f269e3021894 136
elessair 0:f269e3021894 137 #endif /* MBEDTLS_THREADING_C */