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/*
* Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CCAT_CAT_CONDITION_H
#define CCAT_CAT_CONDITION_H
#include <pthread.h>
#include <sys/time.h>
#include <stdio.h>
typedef struct _CatCondition {
pthread_mutex_t mutex;
pthread_cond_t cond;
} CatCondition;
static inline void CatConditionInit(CatCondition *cond) {
pthread_condattr_t condattr = {0};
pthread_cond_init(&cond->cond, &condattr);
pthread_mutex_init(&cond->mutex, NULL);
}
static inline void CatConditionDestory(CatCondition *cond) {
pthread_cond_destroy(&cond->cond);
pthread_mutex_destroy(&cond->mutex);
}
static inline void CatConditionSignal(CatCondition *cond) {
pthread_mutex_lock(&cond->mutex);
pthread_cond_signal(&cond->cond);
pthread_mutex_unlock(&cond->mutex);
}
/**
*
* @param cond
* @param remain in nanoseconds.
* @return
*/
static inline long CatConditionWait(CatCondition *cond, long remainInMillis) {
struct timeval t1, t2;
gettimeofday(&t1, NULL);
pthread_mutex_lock(&cond->mutex);
struct timespec ts = {
t1.tv_sec + remainInMillis / 1000,
t1.tv_usec * 1000 + remainInMillis % 1000 * 1000 * 1000
};
pthread_cond_timedwait(&cond->cond, &cond->mutex, &ts);
pthread_mutex_unlock(&cond->mutex);
gettimeofday(&t2, NULL);
long delta = (t2.tv_sec - t1.tv_sec) * 1000 + (t2.tv_usec - t1.tv_usec) / 1000;
return remainInMillis - delta;
}
#endif //CCAT_CAT_CONDITION_H