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// Copyright (C) 2019-2020 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef MULTI_THREADING_UTIL_H
#define MULTI_THREADING_UTIL_H
#include <boost/noncopyable.hpp>
namespace isc {
namespace dhcp {
/// @note: everything here MUST be used ONLY from the main thread.
/// When called from a thread of the pool it can deadlock.
/// @brief Function stopping and joining all threads of the pool.
/// @throw isc::NotImplemented until is implemented.
void stopPktProcessing();
/// @brief Function (re)starting threads of the pool.
/// @throw isc::NotImplemented until is implemented.
void startPktProcessing();
/// @brief RAII class creating a critical section.
///
/// @note: the multi-threading mode MUST NOT be changed in the RAII
/// @c MultiThreadingCriticalSection body.
class MultiThreadingCriticalSection : public boost::noncopyable {
public:
/// @brief Constructor.
/// Entering the critical section.
MultiThreadingCriticalSection();
/// @brief Destructor.
/// Leaving the critical section.
virtual ~MultiThreadingCriticalSection();
/// @brief Class method stopping and joining all threads of the pool.
/// @throw isc::NotImplemented until is implemented.
static void stopPktProcessing();
/// @brief Class method (re)starting threads of the pool.
/// @throw isc::NotImplemented until is implemented.
static void startPktProcessing();
};
} // namespace dhcp
} // namespace isc
#endif // MULTI_THREADING_UTIL_H
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