| /* |
| * Copyright (c) 2010, Texas Instruments Incorporated |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * * Neither the name of Texas Instruments Incorporated nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| * @file timm_osal_Mutexs.c |
| * This file contains methods that provides the functionality |
| * |
| * @path \ |
| * |
| */ |
| /* -------------------------------------------------------------------------- */ |
| /* ========================================================================= |
| *! |
| *! Revision History |
| *! =================================== |
| *! 04-Nov-2008 Maiya ShreeHarsha: Linux specific changes |
| *! 0.1: Created the first draft version, ksrini@ti.com |
| * ========================================================================= */ |
| |
| /****************************************************************************** |
| * Includes |
| ******************************************************************************/ |
| |
| |
| #include "timm_osal_types.h" |
| #include "timm_osal_trace.h" |
| #include "timm_osal_error.h" |
| #include "timm_osal_memory.h" |
| #include "timm_osal_semaphores.h" |
| |
| #include <errno.h> |
| |
| #include <pthread.h> |
| #include <sys/time.h> |
| |
| |
| /* ========================================================================== */ |
| /** |
| * @fn TIMM_OSAL_MutexCreate function |
| * |
| * |
| */ |
| /* ========================================================================== */ |
| TIMM_OSAL_ERRORTYPE TIMM_OSAL_MutexCreate(TIMM_OSAL_PTR * pMutex) |
| { |
| TIMM_OSAL_ERRORTYPE bReturnStatus = TIMM_OSAL_ERR_UNKNOWN; |
| pthread_mutex_t *plMutex = TIMM_OSAL_NULL; |
| |
| plMutex = |
| (pthread_mutex_t *) TIMM_OSAL_Malloc(sizeof(pthread_mutex_t), 0, |
| 0, 0); |
| if (TIMM_OSAL_NULL == plMutex) |
| { |
| bReturnStatus = TIMM_OSAL_ERR_ALLOC; |
| goto EXIT; |
| } |
| |
| /*if (SUCCESS != pthread_mutex_init(plMutex, pAttr)) */ |
| if (SUCCESS != pthread_mutex_init(plMutex, TIMM_OSAL_NULL)) |
| { |
| /*TIMM_OSAL_Error ("Mutex Create failed !"); */ |
| /*goto EXIT; */ |
| } else |
| { |
| /**pMutex = (TIMM_OSAL_PTR *)plMutex;*/ |
| *pMutex = (TIMM_OSAL_PTR) plMutex; |
| bReturnStatus = TIMM_OSAL_ERR_NONE; |
| } |
| EXIT: |
| /*if((TIMM_OSAL_ERR_NONE != bReturnStatus)) { |
| TIMM_OSAL_Free(plMutex); |
| } */ |
| if ((TIMM_OSAL_ERR_NONE != bReturnStatus) && |
| (TIMM_OSAL_NULL != plMutex)) |
| { |
| TIMM_OSAL_Free(plMutex); |
| } |
| return bReturnStatus; |
| |
| /**********************************************************/ |
| /*return TIMM_OSAL_SemaphoreCreate(pMutex, 1);*/ |
| /**********************************************************/ |
| } |
| |
| /* ========================================================================== */ |
| /** |
| * @fn TIMM_OSAL_MutexDelete function |
| * |
| * |
| */ |
| /* ========================================================================== */ |
| TIMM_OSAL_ERRORTYPE TIMM_OSAL_MutexDelete(TIMM_OSAL_PTR pMutex) |
| { |
| TIMM_OSAL_ERRORTYPE bReturnStatus = TIMM_OSAL_ERR_NONE; |
| pthread_mutex_t *plMutex = (pthread_mutex_t *) pMutex; |
| |
| if (plMutex == TIMM_OSAL_NULL) |
| { |
| bReturnStatus = TIMM_OSAL_ERR_PARAMETER; |
| goto EXIT; |
| } |
| /*can we do away with if or with switch case */ |
| if (SUCCESS != pthread_mutex_destroy(plMutex)) |
| { |
| /*TIMM_OSAL_Error("Delete Mutex failed !"); */ |
| bReturnStatus = TIMM_OSAL_ERR_UNKNOWN;; |
| } |
| |
| TIMM_OSAL_Free(plMutex); |
| EXIT: |
| return bReturnStatus; |
| /**********************************************************/ |
| /*return TIMM_OSAL_SemaphoreDelete(pMutex);*/ |
| /**********************************************************/ |
| |
| } |
| |
| /* ========================================================================== */ |
| /** |
| * @fn TIMM_OSAL_MutexObtain function |
| * |
| * |
| */ |
| /* ========================================================================== */ |
| |
| TIMM_OSAL_ERRORTYPE TIMM_OSAL_MutexObtain(TIMM_OSAL_PTR pMutex, |
| TIMM_OSAL_U32 uTimeOut) |
| { |
| TIMM_OSAL_ERRORTYPE bReturnStatus = TIMM_OSAL_ERR_UNKNOWN; |
| struct timespec abs_timeout; |
| struct timeval ltime_now; |
| TIMM_OSAL_U32 ltimenow_us; |
| pthread_mutex_t *plMutex = (pthread_mutex_t *) pMutex; |
| |
| if (plMutex == TIMM_OSAL_NULL) |
| { |
| bReturnStatus = TIMM_OSAL_ERR_PARAMETER; |
| goto EXIT; |
| } |
| |
| if (TIMM_OSAL_SUSPEND == uTimeOut) |
| { |
| if (SUCCESS != pthread_mutex_lock(plMutex)) |
| { |
| /*TIMM_OSAL_Error("Lock Mutex failed !"); */ |
| goto EXIT; |
| } |
| } else if (TIMM_OSAL_NO_SUSPEND == uTimeOut) |
| { |
| if (SUCCESS != pthread_mutex_trylock(plMutex)) |
| { |
| /*TIMM_OSAL_Error("Lock Mutex failed !"); */ |
| goto EXIT; |
| } |
| } else |
| { |
| gettimeofday(<ime_now, NULL); |
| /*uTimeOut is assumed to be in milliseconds */ |
| ltimenow_us = ltime_now.tv_usec + 1000 * uTimeOut; |
| abs_timeout.tv_sec = ltime_now.tv_sec + uTimeOut / 1000; |
| abs_timeout.tv_nsec = (ltimenow_us % 1000000) * 1000; |
| |
| #ifdef _POSIX_VERSION_1_ |
| if (SUCCESS != pthread_mutex_lock(plMutex)) |
| { //Some Posix versions dont support timeout |
| #else |
| if (SUCCESS != pthread_mutex_timedlock(plMutex, &abs_timeout)) |
| { |
| #endif |
| /*TIMM_OSAL_Error("Lock Mutex failed !"); */ |
| goto EXIT; |
| } |
| } |
| bReturnStatus = TIMM_OSAL_ERR_NONE; |
| |
| EXIT: |
| return bReturnStatus; |
| /**********************************************************/ |
| /*return TIMM_OSAL_SemaphoreObtain(pMutex, uTimeOut);*/ |
| /**********************************************************/ |
| } |
| |
| |
| |
| /* ========================================================================== */ |
| /** |
| * @fn TIMM_OSAL_MutexRelease function |
| * |
| * |
| */ |
| /* ========================================================================== */ |
| TIMM_OSAL_ERRORTYPE TIMM_OSAL_MutexRelease(TIMM_OSAL_PTR pMutex) |
| { |
| TIMM_OSAL_ERRORTYPE bReturnStatus = TIMM_OSAL_ERR_UNKNOWN; |
| pthread_mutex_t *plMutex = (pthread_mutex_t *) pMutex; |
| |
| if (TIMM_OSAL_NULL == plMutex) |
| { |
| bReturnStatus = TIMM_OSAL_ERR_PARAMETER; |
| goto EXIT; |
| } |
| |
| if (SUCCESS != pthread_mutex_unlock(plMutex)) |
| { |
| /*TIMM_OSAL_Error("Unlock Mutex failed !"); */ |
| } else |
| { |
| bReturnStatus = TIMM_OSAL_ERR_NONE; |
| } |
| EXIT: |
| return bReturnStatus; |
| /**********************************************************/ |
| /*return TIMM_OSAL_SemaphoreRelease(pMutex);*/ |
| /**********************************************************/ |
| } |