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arangodb/arangod/Cluster/CallbackGuard.cpp

59 lines
1.7 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2019 ArangoDB GmbH, Cologne, Germany
///
/// 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 ArangoDB GmbH, Cologne, Germany
///
/// @author Tobias Gödderz
////////////////////////////////////////////////////////////////////////////////
#include "CallbackGuard.h"
using namespace arangodb;
using namespace arangodb::cluster;
CallbackGuard::CallbackGuard() : _callback(nullptr) {}
CallbackGuard::CallbackGuard(std::function<void(void)> callback)
: _callback(std::move(callback)) {}
// NOLINTNEXTLINE(hicpp-noexcept-move,performance-noexcept-move-constructor)
CallbackGuard::CallbackGuard(CallbackGuard&& other)
: _callback(std::move(other._callback)) {
other._callback = nullptr;
}
// NOLINTNEXTLINE(hicpp-noexcept-move,performance-noexcept-move-constructor)
CallbackGuard& CallbackGuard::operator=(CallbackGuard&& other) {
call();
_callback = std::move(other._callback);
other._callback = nullptr;
return *this;
}
CallbackGuard::~CallbackGuard() { call(); }
void CallbackGuard::callAndClear() {
call();
_callback = nullptr;
}
void CallbackGuard::call() {
if (_callback) {
_callback();
}
}