Timothy Beight / Mbed 2 deprecated 6_songs-from-the-cloud

This is a fork due to permission issues

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of 6_songs-from-the-cloud by MakingMusicWorkshop

mbed-client/mbedtls/source/threading.c@1:0ddbe2d3319c, 2016-05-19 (annotated)

Committer:
timbeight
Date:
Thu May 19 16:02:10 2016 +0000
Revision:
1:0ddbe2d3319c
Parent:
0:f7c60d3e7b8a 
This is my first commit while in the class.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 0:f7c60d3e7b8a 1 /*
maclobdell 0:f7c60d3e7b8a 2 * Threading abstraction layer
maclobdell 0:f7c60d3e7b8a 3 *
maclobdell 0:f7c60d3e7b8a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
maclobdell 0:f7c60d3e7b8a 5 * SPDX-License-Identifier: Apache-2.0
maclobdell 0:f7c60d3e7b8a 6 *
maclobdell 0:f7c60d3e7b8a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
maclobdell 0:f7c60d3e7b8a 8 * not use this file except in compliance with the License.
maclobdell 0:f7c60d3e7b8a 9 * You may obtain a copy of the License at
maclobdell 0:f7c60d3e7b8a 10 *
maclobdell 0:f7c60d3e7b8a 11 * http://www.apache.org/licenses/LICENSE-2.0
maclobdell 0:f7c60d3e7b8a 12 *
maclobdell 0:f7c60d3e7b8a 13 * Unless required by applicable law or agreed to in writing, software
maclobdell 0:f7c60d3e7b8a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
maclobdell 0:f7c60d3e7b8a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell 0:f7c60d3e7b8a 16 * See the License for the specific language governing permissions and
maclobdell 0:f7c60d3e7b8a 17 * limitations under the License.
maclobdell 0:f7c60d3e7b8a 18 *
maclobdell 0:f7c60d3e7b8a 19 * This file is part of mbed TLS (https://tls.mbed.org)
maclobdell 0:f7c60d3e7b8a 20 */
maclobdell 0:f7c60d3e7b8a 21
maclobdell 0:f7c60d3e7b8a 22 #if !defined(MBEDTLS_CONFIG_FILE)
maclobdell 0:f7c60d3e7b8a 23 #include "mbedtls/config.h"
maclobdell 0:f7c60d3e7b8a 24 #else
maclobdell 0:f7c60d3e7b8a 25 #include MBEDTLS_CONFIG_FILE
maclobdell 0:f7c60d3e7b8a 26 #endif
maclobdell 0:f7c60d3e7b8a 27
maclobdell 0:f7c60d3e7b8a 28 #if defined(MBEDTLS_THREADING_C)
maclobdell 0:f7c60d3e7b8a 29
maclobdell 0:f7c60d3e7b8a 30 #include "mbedtls/threading.h"
maclobdell 0:f7c60d3e7b8a 31
maclobdell 0:f7c60d3e7b8a 32 #if defined(MBEDTLS_THREADING_PTHREAD)
maclobdell 0:f7c60d3e7b8a 33 static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 34 {
maclobdell 0:f7c60d3e7b8a 35 if( mutex == NULL )
maclobdell 0:f7c60d3e7b8a 36 return;
maclobdell 0:f7c60d3e7b8a 37
maclobdell 0:f7c60d3e7b8a 38 mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0;
maclobdell 0:f7c60d3e7b8a 39 }
maclobdell 0:f7c60d3e7b8a 40
maclobdell 0:f7c60d3e7b8a 41 static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 42 {
maclobdell 0:f7c60d3e7b8a 43 if( mutex == NULL )
maclobdell 0:f7c60d3e7b8a 44 return;
maclobdell 0:f7c60d3e7b8a 45
maclobdell 0:f7c60d3e7b8a 46 (void) pthread_mutex_destroy( &mutex->mutex );
maclobdell 0:f7c60d3e7b8a 47 }
maclobdell 0:f7c60d3e7b8a 48
maclobdell 0:f7c60d3e7b8a 49 static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 50 {
maclobdell 0:f7c60d3e7b8a 51 if( mutex == NULL || ! mutex->is_valid )
maclobdell 0:f7c60d3e7b8a 52 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 53
maclobdell 0:f7c60d3e7b8a 54 if( pthread_mutex_lock( &mutex->mutex ) != 0 )
maclobdell 0:f7c60d3e7b8a 55 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
maclobdell 0:f7c60d3e7b8a 56
maclobdell 0:f7c60d3e7b8a 57 return( 0 );
maclobdell 0:f7c60d3e7b8a 58 }
maclobdell 0:f7c60d3e7b8a 59
maclobdell 0:f7c60d3e7b8a 60 static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 61 {
maclobdell 0:f7c60d3e7b8a 62 if( mutex == NULL || ! mutex->is_valid )
maclobdell 0:f7c60d3e7b8a 63 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 64
maclobdell 0:f7c60d3e7b8a 65 if( pthread_mutex_unlock( &mutex->mutex ) != 0 )
maclobdell 0:f7c60d3e7b8a 66 return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
maclobdell 0:f7c60d3e7b8a 67
maclobdell 0:f7c60d3e7b8a 68 return( 0 );
maclobdell 0:f7c60d3e7b8a 69 }
maclobdell 0:f7c60d3e7b8a 70
maclobdell 0:f7c60d3e7b8a 71 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread;
maclobdell 0:f7c60d3e7b8a 72 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread;
maclobdell 0:f7c60d3e7b8a 73 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread;
maclobdell 0:f7c60d3e7b8a 74 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread;
maclobdell 0:f7c60d3e7b8a 75
maclobdell 0:f7c60d3e7b8a 76 /*
maclobdell 0:f7c60d3e7b8a 77 * With phtreads we can statically initialize mutexes
maclobdell 0:f7c60d3e7b8a 78 */
maclobdell 0:f7c60d3e7b8a 79 #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 }
maclobdell 0:f7c60d3e7b8a 80
maclobdell 0:f7c60d3e7b8a 81 #endif /* MBEDTLS_THREADING_PTHREAD */
maclobdell 0:f7c60d3e7b8a 82
maclobdell 0:f7c60d3e7b8a 83 #if defined(MBEDTLS_THREADING_ALT)
maclobdell 0:f7c60d3e7b8a 84 static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 85 {
maclobdell 0:f7c60d3e7b8a 86 ((void) mutex );
maclobdell 0:f7c60d3e7b8a 87 return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 88 }
maclobdell 0:f7c60d3e7b8a 89 static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex )
maclobdell 0:f7c60d3e7b8a 90 {
maclobdell 0:f7c60d3e7b8a 91 ((void) mutex );
maclobdell 0:f7c60d3e7b8a 92 return;
maclobdell 0:f7c60d3e7b8a 93 }
maclobdell 0:f7c60d3e7b8a 94
maclobdell 0:f7c60d3e7b8a 95 void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
maclobdell 0:f7c60d3e7b8a 96 void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy;
maclobdell 0:f7c60d3e7b8a 97 int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
maclobdell 0:f7c60d3e7b8a 98 int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail;
maclobdell 0:f7c60d3e7b8a 99
maclobdell 0:f7c60d3e7b8a 100 /*
maclobdell 0:f7c60d3e7b8a 101 * Set functions pointers and initialize global mutexes
maclobdell 0:f7c60d3e7b8a 102 */
maclobdell 0:f7c60d3e7b8a 103 void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ),
maclobdell 0:f7c60d3e7b8a 104 void (*mutex_free)( mbedtls_threading_mutex_t * ),
maclobdell 0:f7c60d3e7b8a 105 int (*mutex_lock)( mbedtls_threading_mutex_t * ),
maclobdell 0:f7c60d3e7b8a 106 int (*mutex_unlock)( mbedtls_threading_mutex_t * ) )
maclobdell 0:f7c60d3e7b8a 107 {
maclobdell 0:f7c60d3e7b8a 108 mbedtls_mutex_init = mutex_init;
maclobdell 0:f7c60d3e7b8a 109 mbedtls_mutex_free = mutex_free;
maclobdell 0:f7c60d3e7b8a 110 mbedtls_mutex_lock = mutex_lock;
maclobdell 0:f7c60d3e7b8a 111 mbedtls_mutex_unlock = mutex_unlock;
maclobdell 0:f7c60d3e7b8a 112
maclobdell 0:f7c60d3e7b8a 113 mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
maclobdell 0:f7c60d3e7b8a 114 mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
maclobdell 0:f7c60d3e7b8a 115 }
maclobdell 0:f7c60d3e7b8a 116
maclobdell 0:f7c60d3e7b8a 117 /*
maclobdell 0:f7c60d3e7b8a 118 * Free global mutexes
maclobdell 0:f7c60d3e7b8a 119 */
maclobdell 0:f7c60d3e7b8a 120 void mbedtls_threading_free_alt( void )
maclobdell 0:f7c60d3e7b8a 121 {
maclobdell 0:f7c60d3e7b8a 122 mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
maclobdell 0:f7c60d3e7b8a 123 mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
maclobdell 0:f7c60d3e7b8a 124 }
maclobdell 0:f7c60d3e7b8a 125 #endif /* MBEDTLS_THREADING_ALT */
maclobdell 0:f7c60d3e7b8a 126
maclobdell 0:f7c60d3e7b8a 127 /*
maclobdell 0:f7c60d3e7b8a 128 * Define global mutexes
maclobdell 0:f7c60d3e7b8a 129 */
maclobdell 0:f7c60d3e7b8a 130 #ifndef MUTEX_INIT
maclobdell 0:f7c60d3e7b8a 131 #define MUTEX_INIT
maclobdell 0:f7c60d3e7b8a 132 #endif
maclobdell 0:f7c60d3e7b8a 133 mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
maclobdell 0:f7c60d3e7b8a 134 mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
maclobdell 0:f7c60d3e7b8a 135
maclobdell 0:f7c60d3e7b8a 136 #endif /* MBEDTLS_THREADING_C */