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/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#include "mongo/platform/compiler.h"
#include "mongo/stdx/functional.h"
#include "mongo/util/exit_code.h"
namespace mongo {
/**
* Quickly determines if the shutdown flag is set. May not be definitive.
*/
bool inShutdown();
/**
* Definitively determines if the shutdown flag is set. Calling this is more expensive
* than inShutdown().
*/
bool inShutdownStrict();
/**
* Registers a new shutdown task to be called when shutdown or
* shutdownNoTerminate is called. If this function is invoked after
* shutdown or shutdownNoTerminate has been called, std::terminate is
* called.
*/
void registerShutdownTask(stdx::function<void()>);
/**
* Toggles the shutdown flag to 'true', runs registered shutdown
* tasks, and then exits with the given code. It is safe to call this
* function from multiple threads, only the first caller executes
* shutdown tasks. It is illegal to reenter this function from a
* registered shutdown task. The function does not return.
*/
MONGO_COMPILER_NORETURN void shutdown(ExitCode code);
/**
* Toggles the shutdown flag to 'true' and runs the registered
* shutdown tasks. It is safe to call this function from multiple
* threads, only the first caller executes shutdown tasks, subsequent
* callers return immediately. It is legal to call shutdownNoTerminate
* from a shutdown task.
*/
void shutdownNoTerminate();
/** An alias for 'shutdown'. */
MONGO_COMPILER_NORETURN inline void exitCleanly(ExitCode code) {
shutdown(code);
}
} // namespace mongo
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