forked from premiere/premiere-libtorrent
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
|
|
|
|
Copyright (c) 2007, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#ifndef OBSERVER_HPP
|
|
#define OBSERVER_HPP
|
|
|
|
#include <boost/pool/pool.hpp>
|
|
#include <boost/detail/atomic_count.hpp>
|
|
#include <boost/intrusive_ptr.hpp>
|
|
|
|
namespace libtorrent {
|
|
namespace dht {
|
|
|
|
struct observer;
|
|
struct msg;
|
|
|
|
// defined in rpc_manager.cpp
|
|
TORRENT_EXPORT void intrusive_ptr_add_ref(observer const*);
|
|
TORRENT_EXPORT void intrusive_ptr_release(observer const*);
|
|
|
|
struct observer : boost::noncopyable
|
|
{
|
|
friend TORRENT_EXPORT void intrusive_ptr_add_ref(observer const*);
|
|
friend TORRENT_EXPORT void intrusive_ptr_release(observer const*);
|
|
|
|
observer(boost::pool<>& p)
|
|
: sent(time_now())
|
|
, pool_allocator(p)
|
|
, m_refs(0)
|
|
{
|
|
#ifndef NDEBUG
|
|
m_in_constructor = true;
|
|
#endif
|
|
}
|
|
|
|
virtual ~observer()
|
|
{
|
|
TORRENT_ASSERT(!m_in_constructor);
|
|
}
|
|
|
|
// these two callbacks lets the observer add
|
|
// information to the message before it's sent
|
|
virtual void send(msg& m) = 0;
|
|
|
|
// this is called when a reply is received
|
|
virtual void reply(msg const& m) = 0;
|
|
|
|
// this is called when no reply has been received within
|
|
// some timeout
|
|
virtual void timeout() = 0;
|
|
|
|
// if this is called the destructor should
|
|
// not invoke any new messages, and should
|
|
// only clean up. It means the rpc-manager
|
|
// is being destructed
|
|
virtual void abort() = 0;
|
|
|
|
udp::endpoint target_addr;
|
|
ptime sent;
|
|
#ifndef NDEBUG
|
|
bool m_in_constructor;
|
|
#endif
|
|
private:
|
|
boost::pool<>& pool_allocator;
|
|
// reference counter for intrusive_ptr
|
|
mutable boost::detail::atomic_count m_refs;
|
|
};
|
|
|
|
typedef boost::intrusive_ptr<observer> observer_ptr;
|
|
|
|
} }
|
|
|
|
#endif
|