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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.
*
*/
#ifndef _APRBase_
#define _APRBase_
#include <string>
#include <apr_thread_mutex.h>
#include <apr_errno.h>
#include <QpidError.h>
namespace qpid {
namespace sys {
/**
* Use of APR libraries necessitates explicit init and terminate
* calls. Any class using APR libs should obtain the reference to
* this singleton and increment on construction, decrement on
* destruction. This class can then correctly initialise apr
* before the first use and terminate after the last use.
*/
class APRBase{
static APRBase* instance;
apr_pool_t* pool;
apr_thread_mutex_t* mutex;
int count;
APRBase();
~APRBase();
static APRBase* getInstance();
bool _increment();
void _decrement();
public:
static void increment();
static void decrement();
};
//this is also a convenient place for a helper function for error checking:
void check(apr_status_t status, const char* file, const int line);
std::string get_desc(apr_status_t status);
#define CHECK_APR_SUCCESS(A) qpid::sys::check(A, __FILE__, __LINE__);
}
}
// Inlined as it is called *a lot*
void inline qpid::sys::check(apr_status_t status, const char* file, const int line){
if (status != APR_SUCCESS){
const int size = 50;
char tmp[size];
std::string msg(apr_strerror(status, tmp, size));
throw qpid::QpidError(APR_ERROR + ((int) status), msg,
qpid::SrcLine(file, line));
}
}
#endif
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