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Diffstat (limited to 'lib/asio/detail/scoped_lock.hpp')
-rw-r--r-- | lib/asio/detail/scoped_lock.hpp | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/lib/asio/detail/scoped_lock.hpp b/lib/asio/detail/scoped_lock.hpp deleted file mode 100644 index 6cbce38..0000000 --- a/lib/asio/detail/scoped_lock.hpp +++ /dev/null @@ -1,101 +0,0 @@ -// -// detail/scoped_lock.hpp -// ~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// -// Distributed under the Boost Software License, Version 1.0. (See accompanying -// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -// - -#ifndef ASIO_DETAIL_SCOPED_LOCK_HPP -#define ASIO_DETAIL_SCOPED_LOCK_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/noncopyable.hpp" - -#include "asio/detail/push_options.hpp" - -namespace asio { -namespace detail { - -// Helper class to lock and unlock a mutex automatically. -template <typename Mutex> -class scoped_lock - : private noncopyable -{ -public: - // Tag type used to distinguish constructors. - enum adopt_lock_t { adopt_lock }; - - // Constructor adopts a lock that is already held. - scoped_lock(Mutex& m, adopt_lock_t) - : mutex_(m), - locked_(true) - { - } - - // Constructor acquires the lock. - explicit scoped_lock(Mutex& m) - : mutex_(m) - { - mutex_.lock(); - locked_ = true; - } - - // Destructor releases the lock. - ~scoped_lock() - { - if (locked_) - mutex_.unlock(); - } - - // Explicitly acquire the lock. - void lock() - { - if (!locked_) - { - mutex_.lock(); - locked_ = true; - } - } - - // Explicitly release the lock. - void unlock() - { - if (locked_) - { - mutex_.unlock(); - locked_ = false; - } - } - - // Test whether the lock is held. - bool locked() const - { - return locked_; - } - - // Get the underlying mutex. - Mutex& mutex() - { - return mutex_; - } - -private: - // The underlying mutex. - Mutex& mutex_; - - // Whether the mutex is currently locked or unlocked. - bool locked_; -}; - -} // namespace detail -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // ASIO_DETAIL_SCOPED_LOCK_HPP |