예제 #1
0
osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr)
{
    UINT32 uwRet;
    UINT32 uwSemId;

    UNUSED(attr);

    if (OS_INT_ACTIVE)
    {
        return (osSemaphoreId_t)NULL;
    }

    if(1 == max_count)
    {
        uwRet = LOS_BinarySemCreate((UINT16)initial_count, &uwSemId);
    }
    else
    {
        uwRet = LOS_SemCreate((UINT16)initial_count, &uwSemId);
    }

    if (uwRet == LOS_OK)
    {
        return (osSemaphoreId_t)(GET_SEM(uwSemId));
    }
    else
    {
        return (osSemaphoreId_t)NULL;
    }
}
예제 #2
0
tsk_semaphore_handle_t* tsk_semaphore_create_2(int initial_val)
{
    SEMAPHORE_T handle = tsk_null;
    
#if TSK_UNDER_WINDOWS
#	if TSK_UNDER_WINDOWS_RT
    handle = CreateSemaphoreEx(NULL, initial_val, 0x7FFFFFFF, NULL, 0x00000000, SEMAPHORE_ALL_ACCESS);
#	else
    handle = CreateSemaphore(NULL, initial_val, 0x7FFFFFFF, NULL);
#	endif
#else
    handle = tsk_calloc(1, sizeof(SEMAPHORE_S));
    
#if TSK_USE_NAMED_SEM
    named_sem_t * nsem = (named_sem_t*)handle;
    snprintf(nsem->name, (sizeof(nsem->name)/sizeof(nsem->name[0])) - 1, "/sem/%llu/%d.", tsk_time_epoch(), rand() ^ rand());
    if ((nsem->sem = sem_open(nsem->name, O_CREAT /*| O_EXCL*/, S_IRUSR | S_IWUSR, initial_val)) == SEM_FAILED) {
#else
        if (sem_init((SEMAPHORE_T)handle, 0, initial_val)) {
#endif
            TSK_FREE(handle);
            TSK_DEBUG_ERROR("Failed to initialize the new semaphore (errno=%d).", errno);
        }
#endif
        if (!handle) {
            TSK_DEBUG_ERROR("Failed to create new semaphore");
        }
        return handle;
    }
    
    /**@ingroup tsk_semaphore_group
     * Increments a semaphore.
     * @param handle The semaphore to increment.
     * @retval Zero if succeed and otherwise the function returns -1 and sets errno to indicate the error.
     * @sa @ref tsk_semaphore_decrement.
     */
    int tsk_semaphore_increment(tsk_semaphore_handle_t* handle)
    {
        int ret = EINVAL;
        if (handle) {
#if TSK_UNDER_WINDOWS
            if((ret = ReleaseSemaphore((SEMAPHORE_T)handle, 1L, NULL) ? 0 : -1))
#else
            if((ret = sem_post((SEMAPHORE_T)GET_SEM(handle))))
#endif
            {
                TSK_DEBUG_ERROR("sem_post function failed: %d", ret);
            }
        }
        return ret;
    }
예제 #3
0
    /**@ingroup tsk_semaphore_group
     * Destroy a semaphore previously created using @ref tsk_semaphore_create.
     * @param handle The semaphore to free.
     * @sa @ref tsk_semaphore_create
     */
    void tsk_semaphore_destroy(tsk_semaphore_handle_t** handle)
    {
        if(handle && *handle)
        {
#if TSK_UNDER_WINDOWS
            CloseHandle((SEMAPHORE_T)*handle);
            *handle = tsk_null;
#else
#	if TSK_USE_NAMED_SEM
            named_sem_t * nsem = ((named_sem_t*)*handle);
            sem_close(nsem->sem);
#else
            sem_destroy((SEMAPHORE_T)GET_SEM(*handle));
#endif /* TSK_USE_NAMED_SEM */
            tsk_free(handle);
#endif
        }
        else{
            TSK_DEBUG_WARN("Cannot free an uninitialized semaphore object");
        }
    }
예제 #4
0
void hl_semaphore_destroy(hl_semaphore_handle_t** handle)
{
    if (handle && *handle) {
#if HL_UNDER_WINDOWS
        CloseHandle((SEMAPHORE_T)*handle);
        *handle = hl_null;
#else
#	if HL_USE_NAMED_SEM
        named_sem_t * nsem = ((named_sem_t*)*handle);
        sem_close(nsem->sem);
        HL_MEMORY_FREE(nsem->name);
#else
        sem_destroy((SEMAPHORE_T)GET_SEM(*handle));
#endif /* HL_USE_NAMED_SEM */
        HL_MEMORY_FREE(handle);
#endif
    }
    else {
        HL_DEBUG_WARN("Cannot free an uninitialized semaphore object");
    }
}
예제 #5
0
    /**@ingroup tsk_semaphore_group
     * Decrements a semaphore.
     * @param handle The semaphore to decrement.
     * @retval Zero if succeed and otherwise the function returns -1 and sets errno to indicate the error.
     * @sa @ref tsk_semaphore_increment.
     */
    int tsk_semaphore_decrement(tsk_semaphore_handle_t* handle)
    {
        int ret = EINVAL;
        if (handle) {
#if TSK_UNDER_WINDOWS
#	   if TSK_UNDER_WINDOWS_RT
            ret = (WaitForSingleObjectEx((SEMAPHORE_T)handle, INFINITE, TRUE) == WAIT_OBJECT_0) ? 0 : -1;
#	   else
            ret = (WaitForSingleObject((SEMAPHORE_T)handle, INFINITE) == WAIT_OBJECT_0) ? 0 : -1;
#endif
            if (ret)	{
                TSK_DEBUG_ERROR("sem_wait function failed: %d", ret);
            }
#else
            do {
                ret = sem_wait((SEMAPHORE_T)GET_SEM(handle));
            }
            while ( errno == EINTR );
            if(ret)	TSK_DEBUG_ERROR("sem_wait function failed: %d", errno);
#endif
        }
        
        return ret;
    }
예제 #6
0
hl_semaphore_handle_t* hl_semaphore_create_2(int initial_val)
{
    SEMAPHORE_T handle = hl_null;

#if HL_UNDER_WINDOWS
#	if HL_UNDER_WINDOWS_RT
    handle = CreateSemaphoreEx(NULL, initial_val, 0x7FFFFFFF, NULL, 0x00000000, SEMAPHORE_ALL_ACCESS);
#	else
    handle = CreateSemaphore(NULL, initial_val, 0x7FFFFFFF, NULL);
#	endif
#else
    handle = hl_memory_calloc(1, sizeof(SEMAPHORE_S));

#if HL_USE_NAMED_SEM
    named_sem_t * nsem = (named_sem_t*)handle;
    hl_sprintf(&(nsem->name), "/sem-%d", sem_count++);
    if ((nsem->sem = sem_open(nsem->name, O_CREAT /*| O_EXCL*/, S_IRUSR | S_IWUSR, initial_val)) == SEM_FAILED) {
        HL_MEMORY_FREE(nsem->name);
#else
    if (sem_init((SEMAPHORE_T)handle, 0, initial_val)) {
#endif
        HL_MEMORY_FREE(handle);
        HL_DEBUG_ERROR("Failed to initialize the new semaphore (errno=%d).", errno);
    }
#endif

    if (!handle) {
        HL_DEBUG_ERROR("Failed to create new semaphore");
    }
    return handle;
}

int hl_semaphore_increment(hl_semaphore_handle_t* handle)
{
    int ret = EINVAL;
    if (handle) {
#if HL_UNDER_WINDOWS
        if ((ret = ReleaseSemaphore((SEMAPHORE_T)handle, 1L, NULL) ? 0 : -1)) {
#else
        if ((ret = sem_post((SEMAPHORE_T)GET_SEM(handle)))) {
#endif
            HL_DEBUG_ERROR("sem_post function failed: %d", ret);
        }
    }
    return ret;
}

int hl_semaphore_decrement(hl_semaphore_handle_t* handle)
{
    int ret = EINVAL;
    if (handle) {
#if HL_UNDER_WINDOWS
#	   if HL_UNDER_WINDOWS_RT
        ret = (WaitForSingleObjectEx((SEMAPHORE_T)handle, INFINITE, TRUE) == WAIT_OBJECT_0) ? 0 : -1;
#	   else
        ret = (WaitForSingleObject((SEMAPHORE_T)handle, INFINITE) == WAIT_OBJECT_0) ? 0 : -1;
#endif
        if(ret)	{
            HL_DEBUG_ERROR("sem_wait function failed: %d", ret);
        }
#else
        do {
            ret = sem_wait((SEMAPHORE_T)GET_SEM(handle));
        }
        while ( errno == EINTR );
        if (ret)	{
            HL_DEBUG_ERROR("sem_wait function failed: %d", errno);
        }
#endif
    }

    return ret;
}