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      1 /*
      2  *
      3  * Copyright 2012 Samsung Electronics S.LSI Co. LTD
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 /*
     19  * @file        Exynos_OSAL_Semaphore.c
     20  * @brief
     21  * @author      SeungBeom Kim (sbcrux.kim (at) samsung.com)
     22  * @version     2.0.0
     23  * @history
     24  *   2012.02.20 : Create
     25  */
     26 
     27 #include <stdio.h>
     28 #include <stdlib.h>
     29 #include <string.h>
     30 #include <pthread.h>
     31 #include <semaphore.h>
     32 
     33 #include "Exynos_OSAL_Memory.h"
     34 #include "Exynos_OSAL_Semaphore.h"
     35 
     36 #undef EXYNOS_LOG_TAG
     37 #define EXYNOS_LOG_TAG    "EXYNOS_LOG_SEMA"
     38 #define EXYNOS_LOG_OFF
     39 #include "Exynos_OSAL_Log.h"
     40 
     41 
     42 OMX_ERRORTYPE Exynos_OSAL_SemaphoreCreate(OMX_HANDLETYPE *semaphoreHandle)
     43 {
     44     sem_t *sema;
     45 
     46     sema = (sem_t *)Exynos_OSAL_Malloc(sizeof(sem_t));
     47     if (!sema)
     48         return OMX_ErrorInsufficientResources;
     49 
     50     if (sem_init(sema, 0, 0) != 0) {
     51         Exynos_OSAL_Free(sema);
     52         return OMX_ErrorUndefined;
     53     }
     54 
     55     *semaphoreHandle = (OMX_HANDLETYPE)sema;
     56     return OMX_ErrorNone;
     57 }
     58 
     59 OMX_ERRORTYPE Exynos_OSAL_SemaphoreTerminate(OMX_HANDLETYPE semaphoreHandle)
     60 {
     61     sem_t *sema = (sem_t *)semaphoreHandle;
     62 
     63     if (sema == NULL)
     64         return OMX_ErrorBadParameter;
     65 
     66     if (sem_destroy(sema) != 0)
     67         return OMX_ErrorUndefined;
     68 
     69     Exynos_OSAL_Free(sema);
     70     return OMX_ErrorNone;
     71 }
     72 
     73 OMX_ERRORTYPE Exynos_OSAL_SemaphoreWait(OMX_HANDLETYPE semaphoreHandle)
     74 {
     75     sem_t *sema = (sem_t *)semaphoreHandle;
     76 
     77     FunctionIn();
     78 
     79     if (sema == NULL)
     80         return OMX_ErrorBadParameter;
     81 
     82     if (sem_wait(sema) != 0)
     83         return OMX_ErrorUndefined;
     84 
     85     FunctionOut();
     86 
     87     return OMX_ErrorNone;
     88 }
     89 
     90 OMX_ERRORTYPE Exynos_OSAL_SemaphorePost(OMX_HANDLETYPE semaphoreHandle)
     91 {
     92     sem_t *sema = (sem_t *)semaphoreHandle;
     93 
     94     FunctionIn();
     95 
     96     if (sema == NULL)
     97         return OMX_ErrorBadParameter;
     98 
     99     if (sem_post(sema) != 0)
    100         return OMX_ErrorUndefined;
    101 
    102     FunctionOut();
    103 
    104     return OMX_ErrorNone;
    105 }
    106 
    107 OMX_ERRORTYPE Exynos_OSAL_Set_SemaphoreCount(OMX_HANDLETYPE semaphoreHandle, OMX_S32 val)
    108 {
    109     sem_t *sema = (sem_t *)semaphoreHandle;
    110 
    111     if (sema == NULL)
    112         return OMX_ErrorBadParameter;
    113 
    114     if (sem_init(sema, 0, val) != 0)
    115         return OMX_ErrorUndefined;
    116 
    117     return OMX_ErrorNone;
    118 }
    119 
    120 OMX_ERRORTYPE Exynos_OSAL_Get_SemaphoreCount(OMX_HANDLETYPE semaphoreHandle, OMX_S32 *val)
    121 {
    122     sem_t *sema = (sem_t *)semaphoreHandle;
    123     int semaVal = 0;
    124 
    125     if (sema == NULL)
    126         return OMX_ErrorBadParameter;
    127 
    128     if (sem_getvalue(sema, &semaVal) != 0)
    129         return OMX_ErrorUndefined;
    130 
    131     *val = (OMX_S32)semaVal;
    132 
    133     return OMX_ErrorNone;
    134 }
    135