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-// $Id$
-
-#ifndef CLIENT_ACCEPTOR_H
-#define CLIENT_ACCEPTOR_H
-
-/* The ACE_Acceptor<> template lives in the ace/Acceptor.h header
- file. You'll find a very consitent naming convention between the
- ACE objects and the headers where they can be found. In general,
- the ACE object ACE_Foobar will be found in ace/Foobar.h. */
-
-#include "ace/Acceptor.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-/* Since we want to work with sockets, we'll need a SOCK_Acceptor to
- allow the clients to connect to us. */
-#include "ace/SOCK_Acceptor.h"
-
-/* The Client_Handler object we develop will be used to handle clients
- once they're connected. The ACE_Acceptor<> template's first
- parameter requires such an object. In some cases, you can get by
- with just a forward declaration on the class, in others you have to
- have the whole thing. */
-#include "client_handler.h"
-
-/* Parameterize the ACE_Acceptor<> such that it will listen for socket
- connection attempts and create Client_Handler objects when they
- happen. In Tutorial 001, we wrote the basic acceptor logic on our
- own before we realized that ACE_Acceptor<> was available. You'll
- get spoiled using the ACE templates because they take away a lot of
- the tedious details! */
-typedef ACE_Acceptor <Client_Handler, ACE_SOCK_ACCEPTOR> Client_Acceptor_Base;
-
-#include "thread_pool.h"
-
-/* This time we've added quite a bit more to our acceptor. In
- addition to providing a choice of concurrency strategies, we also
- maintain a Thread_Pool object in case that strategy is chosen. The
- object still isn't very complex but it's come a long way from the
- simple typedef we had in Tutorial 5.
-
- Why keep the thread pool as a member? If we go back to the inetd
- concept you'll recall that we need several acceptors to make that
- work. We may have a situation in which our different client types
- requre different resources. That is, we may need a large thread
- pool for some client types and a smaller one for others. We could
- share a pool but then the client types may have undesirable impact
- on one another.
-
- Just in case you do want to share a single thread pool, there is a
- constructor below that will let you do that. */
-class Client_Acceptor : public Client_Acceptor_Base
-{
-public:
- typedef Client_Acceptor_Base inherited;
-
- /* Now that we have more than two strategies, we need more than a
- boolean to tell us what we're using. A set of enums is a good
- choice because it allows us to use named values. Another option
- would be a set of static const integers. */
- enum concurrency_t
- {
- single_threaded_,
- thread_per_connection_,
- thread_pool_
- };
-
- /* The default constructor allows the programmer to choose the
- concurrency strategy. Since we want to focus on thread-pool,
- that's what we'll use if nothing is specified. */
- Client_Acceptor (int concurrency = thread_pool_);
-
- /* Another option is to construct the object with an existing thread
- pool. The concurrency strategy is pretty obvious at that point. */
- Client_Acceptor (Thread_Pool &thread_pool);
-
- /* Our destructor will take care of shutting down the thread-pool if
- applicable. */
- ~Client_Acceptor (void);
-
- /* Open ourselves and register with the given reactor. The thread
- pool size can be specified here if you want to use that
- concurrency strategy. */
- int open (const ACE_INET_Addr &addr,
- ACE_Reactor *reactor,
- int pool_size = Thread_Pool::default_pool_size_);
-
- /* Close ourselves and our thread pool if applicable */
- int close (void);
-
- /* What is our concurrency strategy? */
- int concurrency (void)
- {
- return this->concurrency_;
- }
-
- /* Give back a pointer to our thread pool. Our Client_Handler
- objects will need this so that their handle_input() methods can
- put themselves into the pool. Another alternative would be a
- globally accessible thread pool. ACE_Singleton<> is a way to
- achieve that. */
- Thread_Pool *thread_pool (void)
- {
- return &this->the_thread_pool_;
- }
-
- /* Since we can be constructed with a Thread_Pool reference, there
- are times when we need to know if the thread pool we're using is
- ours or if we're just borrowing it from somebody else. */
- int thread_pool_is_private (void)
- {
- return &the_thread_pool_ == &private_thread_pool_;
- }
-
-protected:
- int concurrency_;
-
- Thread_Pool private_thread_pool_;
-
- Thread_Pool &the_thread_pool_;
-};
-
-#endif /* CLIENT_ACCEPTOR_H */