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/*
*
* 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.
*
*/
#include "qpid/sys/Mutex.h"
namespace qpid {
namespace sys {
/**
* Initialise a recursive mutex attr for use in creating mutexes later
* (we use pthread_once to make sure it is initialised exactly once)
*/
namespace {
pthread_once_t onceControl = PTHREAD_ONCE_INIT;
pthread_mutexattr_t mutexattr;
void initMutexattr() {
pthread_mutexattr_init(&mutexattr);
pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_RECURSIVE);
}
}
const pthread_mutexattr_t* Mutex::getAttribute() {
pthread_once(&onceControl, initMutexattr);
return &mutexattr;
}
}} // namespace qpid::sys
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