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;
}
}
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;
}
/**@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");
}
}
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");
}
}
/**@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;
}
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;
}