mirror of
https://github.com/XRPLF/rippled.git
synced 2025-11-20 11:05:54 +00:00
116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
//------------------------------------------------------------------------------
|
|
/*
|
|
This file is part of Beast: https://github.com/vinniefalco/Beast
|
|
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
|
|
|
|
Permission to use, copy, modify, and/or distribute this software for any
|
|
purpose with or without fee is hereby granted, provided that the above
|
|
copyright notice and this permission notice appear in all copies.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
//==============================================================================
|
|
|
|
#ifndef BEAST_ASIO_ASYNC_SHAREDHANDLER_H_INCLUDED
|
|
#define BEAST_ASIO_ASYNC_SHAREDHANDLER_H_INCLUDED
|
|
|
|
template <typename T>
|
|
struct SharedHandlerAllocator;
|
|
|
|
/** Reference counted wrapper that can hold any other boost::asio handler.
|
|
|
|
This object will match these signatures:
|
|
|
|
@code
|
|
|
|
void (void)
|
|
void (system::error_code)
|
|
void (system::error_code, std::size_t)
|
|
|
|
@endcode
|
|
|
|
If the underlying implementation does not support the signature,
|
|
undefined behavior will result.
|
|
|
|
Supports these concepts:
|
|
Destructible
|
|
*/
|
|
class SharedHandler : public SharedObject
|
|
{
|
|
protected:
|
|
typedef boost::system::error_code error_code;
|
|
|
|
typedef SharedFunction <void(void),
|
|
SharedHandlerAllocator <char> > invoked_type;
|
|
|
|
SharedHandler () noexcept { }
|
|
|
|
public:
|
|
// For asio::async_result<>
|
|
typedef void result_type;
|
|
|
|
typedef SharedPtr <SharedHandler> Ptr;
|
|
|
|
virtual void operator() ();
|
|
virtual void operator() (error_code const&);
|
|
virtual void operator() (error_code const&, std::size_t);
|
|
|
|
template <typename Function>
|
|
void invoke (BOOST_ASIO_MOVE_ARG(Function) f)
|
|
{
|
|
// The allocator will hold a reference to the SharedHandler
|
|
// so that we can safely destroy the function object.
|
|
invoked_type invoked (f,
|
|
SharedHandlerAllocator <char> (this));
|
|
invoke (invoked);
|
|
}
|
|
|
|
virtual void invoke (invoked_type& invoked) = 0;
|
|
virtual void* allocate (std::size_t size) = 0;
|
|
virtual void deallocate (void* p, std::size_t size) = 0;
|
|
virtual bool is_continuation () = 0;
|
|
|
|
static void pure_virtual_called (char const* fileName, int lineNumber);
|
|
|
|
private:
|
|
template <typename Function>
|
|
friend void asio_handler_invoke (BOOST_ASIO_MOVE_ARG(Function) f, SharedHandler*);
|
|
friend void* asio_handler_allocate (std::size_t, SharedHandler*);
|
|
friend void asio_handler_deallocate (void*, std::size_t, SharedHandler*);
|
|
friend bool asio_handler_is_continuation (SharedHandler*);
|
|
};
|
|
|
|
//--------------------------------------------------------------------------
|
|
//
|
|
// Context execution guarantees
|
|
//
|
|
|
|
template <class Function>
|
|
void asio_handler_invoke (BOOST_ASIO_MOVE_ARG(Function) f, SharedHandler* handler)
|
|
{
|
|
handler->invoke (BOOST_ASIO_MOVE_CAST(Function)(f));
|
|
}
|
|
|
|
inline void* asio_handler_allocate (std::size_t size, SharedHandler* handler)
|
|
{
|
|
return handler->allocate (size);
|
|
}
|
|
|
|
inline void asio_handler_deallocate (void* p, std::size_t size, SharedHandler* handler)
|
|
{
|
|
handler->deallocate (p, size);
|
|
}
|
|
|
|
inline bool asio_handler_is_continuation (SharedHandler* handler)
|
|
{
|
|
return handler->is_continuation ();
|
|
}
|
|
|
|
#endif
|