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author | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
commit | 0efa7c32aaf21a29b42b5926cc116007056843be (patch) | |
tree | 882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp | |
parent | 1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff) | |
download | swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.tar.bz2 |
Moved some modules into separate git modules.
Diffstat (limited to '3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp')
m--------- | 3rdParty/Boost | 0 | ||||
-rw-r--r-- | 3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp | 293 |
2 files changed, 0 insertions, 293 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp b/3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp deleted file mode 100644 index 2775078..0000000 --- a/3rdParty/Boost/boost/asio/detail/indirect_handler_queue.hpp +++ /dev/null @@ -1,293 +0,0 @@ -// -// indirect_handler_queue.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2008 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 BOOST_ASIO_DETAIL_INDIRECT_HANDLER_QUEUE_HPP -#define BOOST_ASIO_DETAIL_INDIRECT_HANDLER_QUEUE_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include <boost/asio/detail/push_options.hpp> - -#include <boost/asio/detail/handler_alloc_helpers.hpp> -#include <boost/asio/detail/handler_invoke_helpers.hpp> -#include <boost/asio/detail/noncopyable.hpp> - -#if defined(_MSC_VER) && (_MSC_VER >= 1310) -extern "C" void _ReadWriteBarrier(); -# pragma intrinsic(_ReadWriteBarrier) -#endif // defined(_MSC_VER) && (_MSC_VER >= 1310) - -namespace boost { -namespace asio { -namespace detail { - -class indirect_handler_queue - : private noncopyable -{ -public: - class handler; - - // Element for a node in the queue. - class node - { - public: - node() - : version_(0), - handler_(0), - next_(0) - { - } - - private: - friend class indirect_handler_queue; - unsigned long version_; - handler* handler_; - node* next_; - }; - - // Base class for handlers in the queue. - class handler - : private noncopyable - { - public: - void invoke() - { - invoke_func_(this); - } - - void destroy() - { - destroy_func_(this); - } - - protected: - typedef void (*invoke_func_type)(handler*); - typedef void (*destroy_func_type)(handler*); - - handler(invoke_func_type invoke_func, - destroy_func_type destroy_func) - : node_(new node), - invoke_func_(invoke_func), - destroy_func_(destroy_func) - { - } - - ~handler() - { - if (node_) - delete node_; - } - - private: - friend class indirect_handler_queue; - node* node_; - invoke_func_type invoke_func_; - destroy_func_type destroy_func_; - }; - - // Smart point to manager handler lifetimes. - class scoped_ptr - : private noncopyable - { - public: - explicit scoped_ptr(handler* h) - : handler_(h) - { - } - - ~scoped_ptr() - { - if (handler_) - handler_->destroy(); - } - - handler* get() const - { - return handler_; - } - - handler* release() - { - handler* tmp = handler_; - handler_ = 0; - return tmp; - } - - private: - handler* handler_; - }; - - // Constructor. - indirect_handler_queue() - : front_(new node), - back_(front_), - next_version_(1) - { - } - - // Destructor. - ~indirect_handler_queue() - { - while (front_) - { - node* tmp = front_; - front_ = front_->next_; - delete tmp; - } - } - - // Wrap a handler to be pushed into the queue. - template <typename Handler> - static handler* wrap(Handler h) - { - // Allocate and construct an object to wrap the handler. - typedef handler_wrapper<Handler> value_type; - typedef handler_alloc_traits<Handler, value_type> alloc_traits; - raw_handler_ptr<alloc_traits> raw_ptr(h); - handler_ptr<alloc_traits> ptr(raw_ptr, h); - return ptr.release(); - } - - // Determine whether the queue has something ready to pop. - bool poppable() - { - return front_->next_ != 0; - } - - // The version number at the front of the queue. - unsigned long front_version() - { - return front_->version_; - } - - // The version number at the back of the queue. - unsigned long back_version() - { - return back_->version_; - } - - // Pop a handler from the front of the queue. - handler* pop() - { - node* n = front_; - node* new_front = n->next_; - if (new_front) - { - handler* h = new_front->handler_; - h->node_ = n; - new_front->handler_ = 0; - front_ = new_front; - return h; - } - return 0; - } - - // Push a handler on to the back of the queue. - void push(handler* h) - { - node* n = h->node_; - h->node_ = 0; - n->version_ = next_version_; - next_version_ += 2; - n->handler_ = h; - n->next_ = 0; - memory_barrier(); - back_->next_ = n; - back_ = n; - } - -private: - // Template wrapper for handlers. - template <typename Handler> - class handler_wrapper - : public handler - { - public: - handler_wrapper(Handler h) - : handler( - &handler_wrapper<Handler>::do_call, - &handler_wrapper<Handler>::do_destroy), - handler_(h) - { - } - - static void do_call(handler* base) - { - // Take ownership of the handler object. - typedef handler_wrapper<Handler> this_type; - this_type* h(static_cast<this_type*>(base)); - typedef handler_alloc_traits<Handler, this_type> alloc_traits; - handler_ptr<alloc_traits> ptr(h->handler_, h); - - // Make a copy of the handler so that the memory can be deallocated before - // the upcall is made. - Handler handler(h->handler_); - - // Free the memory associated with the handler. - ptr.reset(); - - // Make the upcall. - boost_asio_handler_invoke_helpers::invoke(handler, &handler); - } - - static void do_destroy(handler* base) - { - // Take ownership of the handler object. - typedef handler_wrapper<Handler> this_type; - this_type* h(static_cast<this_type*>(base)); - typedef handler_alloc_traits<Handler, this_type> alloc_traits; - handler_ptr<alloc_traits> ptr(h->handler_, h); - - // A sub-object of the handler may be the true owner of the memory - // associated with the handler. Consequently, a local copy of the handler - // is required to ensure that any owning sub-object remains valid until - // after we have deallocated the memory here. - Handler handler(h->handler_); - (void)handler; - - // Free the memory associated with the handler. - ptr.reset(); - } - - private: - Handler handler_; - }; - - // Helper function to create a memory barrier. - static void memory_barrier() - { -#if defined(_GLIBCXX_WRITE_MEM_BARRIER) - _GLIBCXX_WRITE_MEM_BARRIER; -#elif defined(_MSC_VER) && (_MSC_VER >= 1310) - _ReadWriteBarrier(); -#else -# error memory barrier required -#endif - } - - // The front of the queue. - node* front_; - - // The back of the queue. - node* back_; - - // The next version counter to be assigned to a node. - unsigned long next_version_; -}; - -} // namespace detail -} // namespace asio -} // namespace boost - -#include <boost/asio/detail/pop_options.hpp> - -#endif // BOOST_ASIO_DETAIL_INDIRECT_HANDLER_QUEUE_HPP |