mbedtls ported to mbed-classic
Fork of mbedtls by
source/threading.c
- Committer:
- Brian Daniels
- Date:
- 2016-04-07
- Revision:
- 4:bef26f687287
- Parent:
- 1:24750b9ad5ef
File content as of revision 4:bef26f687287:
/* * Threading abstraction layer * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * This file is part of mbed TLS (https://tls.mbed.org) */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_THREADING_C) #include "mbedtls/threading.h" #if defined(MBEDTLS_THREADING_PTHREAD) static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex ) { if( mutex == NULL ) return; mutex->is_valid = pthread_mutex_init( &mutex->mutex, NULL ) == 0; } static void threading_mutex_free_pthread( mbedtls_threading_mutex_t *mutex ) { if( mutex == NULL ) return; (void) pthread_mutex_destroy( &mutex->mutex ); } static int threading_mutex_lock_pthread( mbedtls_threading_mutex_t *mutex ) { if( mutex == NULL || ! mutex->is_valid ) return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA ); if( pthread_mutex_lock( &mutex->mutex ) != 0 ) return( MBEDTLS_ERR_THREADING_MUTEX_ERROR ); return( 0 ); } static int threading_mutex_unlock_pthread( mbedtls_threading_mutex_t *mutex ) { if( mutex == NULL || ! mutex->is_valid ) return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA ); if( pthread_mutex_unlock( &mutex->mutex ) != 0 ) return( MBEDTLS_ERR_THREADING_MUTEX_ERROR ); return( 0 ); } void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_init_pthread; void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_free_pthread; int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_lock_pthread; int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_unlock_pthread; /* * With phtreads we can statically initialize mutexes */ #define MUTEX_INIT = { PTHREAD_MUTEX_INITIALIZER, 1 } #endif /* MBEDTLS_THREADING_PTHREAD */ #if defined(MBEDTLS_THREADING_ALT) static int threading_mutex_fail( mbedtls_threading_mutex_t *mutex ) { ((void) mutex ); return( MBEDTLS_ERR_THREADING_BAD_INPUT_DATA ); } static void threading_mutex_dummy( mbedtls_threading_mutex_t *mutex ) { ((void) mutex ); return; } void (*mbedtls_mutex_init)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy; void (*mbedtls_mutex_free)( mbedtls_threading_mutex_t * ) = threading_mutex_dummy; int (*mbedtls_mutex_lock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail; int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t * ) = threading_mutex_fail; /* * Set functions pointers and initialize global mutexes */ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * ), void (*mutex_free)( mbedtls_threading_mutex_t * ), int (*mutex_lock)( mbedtls_threading_mutex_t * ), int (*mutex_unlock)( mbedtls_threading_mutex_t * ) ) { mbedtls_mutex_init = mutex_init; mbedtls_mutex_free = mutex_free; mbedtls_mutex_lock = mutex_lock; mbedtls_mutex_unlock = mutex_unlock; mbedtls_mutex_init( &mbedtls_threading_readdir_mutex ); mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex ); } /* * Free global mutexes */ void mbedtls_threading_free_alt( void ) { mbedtls_mutex_free( &mbedtls_threading_readdir_mutex ); mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex ); } #endif /* MBEDTLS_THREADING_ALT */ /* * Define global mutexes */ #ifndef MUTEX_INIT #define MUTEX_INIT #endif mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT; mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT; #endif /* MBEDTLS_THREADING_C */