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Diffstat (limited to 'lib/asio/detail/op_queue.hpp')
-rw-r--r-- | lib/asio/detail/op_queue.hpp | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/lib/asio/detail/op_queue.hpp b/lib/asio/detail/op_queue.hpp deleted file mode 100644 index 6219f79..0000000 --- a/lib/asio/detail/op_queue.hpp +++ /dev/null @@ -1,162 +0,0 @@ -// -// detail/op_queue.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_OP_QUEUE_HPP -#define ASIO_DETAIL_OP_QUEUE_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 { - -template <typename Operation> -class op_queue; - -class op_queue_access -{ -public: - template <typename Operation> - static Operation* next(Operation* o) - { - return static_cast<Operation*>(o->next_); - } - - template <typename Operation1, typename Operation2> - static void next(Operation1*& o1, Operation2* o2) - { - o1->next_ = o2; - } - - template <typename Operation> - static void destroy(Operation* o) - { - o->destroy(); - } - - template <typename Operation> - static Operation*& front(op_queue<Operation>& q) - { - return q.front_; - } - - template <typename Operation> - static Operation*& back(op_queue<Operation>& q) - { - return q.back_; - } -}; - -template <typename Operation> -class op_queue - : private noncopyable -{ -public: - // Constructor. - op_queue() - : front_(0), - back_(0) - { - } - - // Destructor destroys all operations. - ~op_queue() - { - while (Operation* op = front_) - { - pop(); - op_queue_access::destroy(op); - } - } - - // Get the operation at the front of the queue. - Operation* front() - { - return front_; - } - - // Pop an operation from the front of the queue. - void pop() - { - if (front_) - { - Operation* tmp = front_; - front_ = op_queue_access::next(front_); - if (front_ == 0) - back_ = 0; - op_queue_access::next(tmp, static_cast<Operation*>(0)); - } - } - - // Push an operation on to the back of the queue. - void push(Operation* h) - { - op_queue_access::next(h, static_cast<Operation*>(0)); - if (back_) - { - op_queue_access::next(back_, h); - back_ = h; - } - else - { - front_ = back_ = h; - } - } - - // Push all operations from another queue on to the back of the queue. The - // source queue may contain operations of a derived type. - template <typename OtherOperation> - void push(op_queue<OtherOperation>& q) - { - if (Operation* other_front = op_queue_access::front(q)) - { - if (back_) - op_queue_access::next(back_, other_front); - else - front_ = other_front; - back_ = op_queue_access::back(q); - op_queue_access::front(q) = 0; - op_queue_access::back(q) = 0; - } - } - - // Whether the queue is empty. - bool empty() const - { - return front_ == 0; - } - - // Test whether an operation is already enqueued. - bool is_enqueued(Operation* o) const - { - return op_queue_access::next(o) != 0 || back_ == o; - } - -private: - friend class op_queue_access; - - // The front of the queue. - Operation* front_; - - // The back of the queue. - Operation* back_; -}; - -} // namespace detail -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // ASIO_DETAIL_OP_QUEUE_HPP |