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arangodb/3rdParty/iresearch/core/utils/io_utils.hpp

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C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2016 by EMC Corporation, All Rights Reserved
///
/// Licensed 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.
///
/// Copyright holder is EMC Corporation
///
/// @author Andrey Abramov
/// @author Vasiliy Nabatchikov
////////////////////////////////////////////////////////////////////////////////
#ifndef IRESEARCH_IO_UTILS_H
#define IRESEARCH_IO_UTILS_H
#include "memory.hpp"
#include "utils/string.hpp"
#define MAKE_DELETER(method) \
template<typename T> \
struct auto_##method : std::default_delete<T> \
{ \
typedef T type; \
typedef std::default_delete<type> base; \
typedef std::unique_ptr< type, auto_##method<type> > ptr; \
void operator()(type* p) const NOEXCEPT \
{ \
if (p) { \
try { \
p->method(); \
base::operator()(p); \
} catch (const std::exception& e) { \
IR_FRMT_ERROR( \
"caught exception while closing i/o stream: '%s'", \
e.what() \
); \
} catch (...) { \
IR_FRMT_ERROR( \
"caught an unspecified exception while closing i/o stream" \
); \
} \
} \
} \
}
NS_ROOT
NS_BEGIN(io_utils)
MAKE_DELETER(close);
MAKE_DELETER(unlock);
NS_END
NS_END
#define DECLARE_IO_PTR(class_name, method) \
typedef iresearch::io_utils::auto_##method< class_name >::ptr ptr
#endif