1/**************************************************************************** 2 * drivers/bch/bchlib_sem.c 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one or more 5 * contributor license agreements. See the NOTICE file distributed with 6 * this work for additional information regarding copyright ownership. The 7 * ASF licenses this file to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance with the 9 * License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 16 * License for the specific language governing permissions and limitations 17 * under the License. 18 * 19 ****************************************************************************/ 20 21/**************************************************************************** 22 * Included Files 23 ****************************************************************************/ 24#include <errno.h> 25#include <assert.h> 26#include <semaphore.h> 27#include "bch.h" 28 29/**************************************************************************** 30 * Public Functions 31 ****************************************************************************/ 32 33/**************************************************************************** 34 * Name: bch_semtake 35 ****************************************************************************/ 36 37void bchlib_semtake(struct bchlib_s *bch) 38{ 39 while (sem_wait(&bch->sem) != 0) 40 { 41 /* The only case that an error should occur here is if the wait was 42 * awakened by a signal. 43 */ 44 45 LOS_ASSERT(get_errno() == EINTR); 46 } 47} 48