Nitin Shukla / LED_Demo

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Dependencies:   MAX44000 nexpaq_mdk

Fork of LED_Demo by Maxim nexpaq

mbd_os/features/mbedtls/src/threading.c@1:55a6170b404f, 2016-09-17 (annotated)

Committer:
nexpaq
Date:
Sat Sep 17 16:32:05 2016 +0000
Revision:
1:55a6170b404f
checking in for sharing

Who changed what in which revision?

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nexpaq 1:55a6170b404f 1 /*
nexpaq 1:55a6170b404f 2 * Threading abstraction layer
nexpaq 1:55a6170b404f 3 *
nexpaq 1:55a6170b404f 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 1:55a6170b404f 5 * SPDX-License-Identifier: Apache-2.0
nexpaq 1:55a6170b404f 6 *
nexpaq 1:55a6170b404f 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 1:55a6170b404f 8 * not use this file except in compliance with the License.
nexpaq 1:55a6170b404f 9 * You may obtain a copy of the License at
nexpaq 1:55a6170b404f 10 *
nexpaq 1:55a6170b404f 11 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 1:55a6170b404f 12 *
nexpaq 1:55a6170b404f 13 * Unless required by applicable law or agreed to in writing, software
nexpaq 1:55a6170b404f 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 1:55a6170b404f 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 1:55a6170b404f 16 * See the License for the specific language governing permissions and
nexpaq 1:55a6170b404f 17 * limitations under the License.
nexpaq 1:55a6170b404f 18 *
nexpaq 1:55a6170b404f 19 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 1:55a6170b404f 20 */
nexpaq 1:55a6170b404f 21
nexpaq 1:55a6170b404f 22 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 1:55a6170b404f 23 #include "mbedtls/config.h"
nexpaq 1:55a6170b404f 24 #else
nexpaq 1:55a6170b404f 25 #include MBEDTLS_CONFIG_FILE
nexpaq 1:55a6170b404f 26 #endif
nexpaq 1:55a6170b404f 27
nexpaq 1:55a6170b404f 28 #if defined(MBEDTLS_THREADING_C)
nexpaq 1:55a6170b404f 29
nexpaq 1:55a6170b404f 30 #include "mbedtls/threading.h"
nexpaq 1:55a6170b404f 31
nexpaq 1:55a6170b404f 32 #if defined(MBEDTLS_THREADING_PTHREAD)
nexpaq 1:55a6170b404f 33 static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 34 {
nexpaq 1:55a6170b404f 35 if( mutex == NULL )
nexpaq 1:55a6170b404f 36 return;
nexpaq 1:55a6170b404f 37
nexpaq 1:55a6170b404f 38 mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0;
nexpaq 1:55a6170b404f 39 }
nexpaq 1:55a6170b404f 40
nexpaq 1:55a6170b404f 41 static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 42 {
nexpaq 1:55a6170b404f 43 if( mutex == NULL )
nexpaq 1:55a6170b404f 44 return;
nexpaq 1:55a6170b404f 45
nexpaq 1:55a6170b404f 46 (void) pthread_mutex_destroy( &mutex->mutex );
nexpaq 1:55a6170b404f 47 }
nexpaq 1:55a6170b404f 48
nexpaq 1:55a6170b404f 49 static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 50 {
nexpaq 1:55a6170b404f 51 if( mutex == NULL || ! mutex->is_valid )
nexpaq 1:55a6170b404f 52 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 53
nexpaq 1:55a6170b404f 54 if( pthread_mutex_lock( &mutex->mutex ) != 0 )
nexpaq 1:55a6170b404f 55 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
nexpaq 1:55a6170b404f 56
nexpaq 1:55a6170b404f 57 return( 0 );
nexpaq 1:55a6170b404f 58 }
nexpaq 1:55a6170b404f 59
nexpaq 1:55a6170b404f 60 static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 61 {
nexpaq 1:55a6170b404f 62 if( mutex == NULL || ! mutex->is_valid )
nexpaq 1:55a6170b404f 63 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 64
nexpaq 1:55a6170b404f 65 if( pthread_mutex_unlock( &mutex->mutex ) != 0 )
nexpaq 1:55a6170b404f 66 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
nexpaq 1:55a6170b404f 67
nexpaq 1:55a6170b404f 68 return( 0 );
nexpaq 1:55a6170b404f 69 }
nexpaq 1:55a6170b404f 70
nexpaq 1:55a6170b404f 71 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread;
nexpaq 1:55a6170b404f 72 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread;
nexpaq 1:55a6170b404f 73 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread;
nexpaq 1:55a6170b404f 74 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread;
nexpaq 1:55a6170b404f 75
nexpaq 1:55a6170b404f 76 /*
nexpaq 1:55a6170b404f 77 * With phtreads we can statically initialize mutexes
nexpaq 1:55a6170b404f 78 */
nexpaq 1:55a6170b404f 79 #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 }
nexpaq 1:55a6170b404f 80
nexpaq 1:55a6170b404f 81 #endif /* MBEDTLS_THREADING_PTHREAD */
nexpaq 1:55a6170b404f 82
nexpaq 1:55a6170b404f 83 #if defined(MBEDTLS_THREADING_ALT)
nexpaq 1:55a6170b404f 84 static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 85 {
nexpaq 1:55a6170b404f 86 ((void) mutex );
nexpaq 1:55a6170b404f 87 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 88 }
nexpaq 1:55a6170b404f 89 static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex )
nexpaq 1:55a6170b404f 90 {
nexpaq 1:55a6170b404f 91 ((void) mutex );
nexpaq 1:55a6170b404f 92 return;
nexpaq 1:55a6170b404f 93 }
nexpaq 1:55a6170b404f 94
nexpaq 1:55a6170b404f 95 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
nexpaq 1:55a6170b404f 96 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
nexpaq 1:55a6170b404f 97 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
nexpaq 1:55a6170b404f 98 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
nexpaq 1:55a6170b404f 99
nexpaq 1:55a6170b404f 100 /*
nexpaq 1:55a6170b404f 101 * Set functions pointers and initialize global mutexes
nexpaq 1:55a6170b404f 102 */
nexpaq 1:55a6170b404f 103 void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
nexpaq 1:55a6170b404f 104 void (*mutex_free)( mbedtls_threading_mutex_t * ),
nexpaq 1:55a6170b404f 105 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
nexpaq 1:55a6170b404f 106 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) )
nexpaq 1:55a6170b404f 107 {
nexpaq 1:55a6170b404f 108 mbedtls_mutex_init = mutex_init;
nexpaq 1:55a6170b404f 109 mbedtls_mutex_free = mutex_free;
nexpaq 1:55a6170b404f 110 mbedtls_mutex_lock = mutex_lock;
nexpaq 1:55a6170b404f 111 mbedtls_mutex_unlock = mutex_unlock;
nexpaq 1:55a6170b404f 112
nexpaq 1:55a6170b404f 113 mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
nexpaq 1:55a6170b404f 114 mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
nexpaq 1:55a6170b404f 115 }
nexpaq 1:55a6170b404f 116
nexpaq 1:55a6170b404f 117 /*
nexpaq 1:55a6170b404f 118 * Free global mutexes
nexpaq 1:55a6170b404f 119 */
nexpaq 1:55a6170b404f 120 void mbedtls_threading_free_alt( void )
nexpaq 1:55a6170b404f 121 {
nexpaq 1:55a6170b404f 122 mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
nexpaq 1:55a6170b404f 123 mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
nexpaq 1:55a6170b404f 124 }
nexpaq 1:55a6170b404f 125 #endif /* MBEDTLS_THREADING_ALT */
nexpaq 1:55a6170b404f 126
nexpaq 1:55a6170b404f 127 /*
nexpaq 1:55a6170b404f 128 * Define global mutexes
nexpaq 1:55a6170b404f 129 */
nexpaq 1:55a6170b404f 130 #ifndef MUTEX_INIT
nexpaq 1:55a6170b404f 131 #define MUTEX_INIT
nexpaq 1:55a6170b404f 132 #endif
nexpaq 1:55a6170b404f 133 mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
nexpaq 1:55a6170b404f 134 mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
nexpaq 1:55a6170b404f 135
nexpaq 1:55a6170b404f 136 #endif /* MBEDTLS_THREADING_C */