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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 <log4cxx/helpers/objectptr.h>
#include <log4cxx/helpers/exception.h>
#include <apr_atomic.h>
using namespace log4cxx::helpers;
ObjectPtrBase::ObjectPtrBase() {
}
ObjectPtrBase::~ObjectPtrBase() {
}
void ObjectPtrBase::checkNull(const int& null) {
if (null != 0) {
throw IllegalArgumentException(LOG4CXX_STR("Attempt to set pointer to a non-zero numeric value."));
}
}
void* ObjectPtrBase::exchange(void** destination, void* newValue) {
#if _WIN32 && (!defined(_MSC_VER) || _MSC_VER >= 1300)
return InterlockedExchangePointer(destination, newValue);
#elif APR_SIZEOF_VOIDP == 4
return (void*) apr_atomic_xchg32((volatile apr_uint32_t*) destination,
(apr_uint32_t) newValue);
#else
void* oldValue = *destination;
*destination = newValue;
return oldValue;
#endif
}
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