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/* -*- C++ -*- */
//=============================================================================
/**
* @file MEM_Connector.h
*
* @author Nanbor Wang <nanbor@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_MEM_CONNECTOR_H
#define ACE_MEM_CONNECTOR_H
#include /**/ "ace/pre.h"
#include /**/ "ace/ACE_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#if (ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1)
#include "ace/SOCK_Connector.h"
#include "ace/MEM_Stream.h"
#include "ace/MEM_Addr.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_MEM_Connector
*
* @brief Defines the format and interface for connecting to a peer
* on a @c ACE_MEM_Stream object.
*/
class ACE_Export ACE_MEM_Connector : public ACE_SOCK_Connector
{
public:
/// Default constructor.
ACE_MEM_Connector (void);
/**
* Actively connect to a peer, producing a connected @c ACE_MEM_Stream
* object if the connection succeeds.
*
* @param new_stream The @c ACE_MEM_Stream object that will be connected
* to the peer.
* @param remote_sap The address that we are trying to connect to.
* The protocol family of @c remote_sap is used for
* the connected socket. That is, if @c remote_sap
* contains an IPv6 address, a socket with family
* PF_INET6 will be used, else it will be PF_INET.
* @note remote_sap must be an address on the local
* host.
* @param timeout Pointer to an @c ACE_Time_Value object with amount
* of time to wait to connect. If the pointer is 0
* then the call blocks until the connection attempt
* is complete, whether it succeeds or fails. If
* *timeout == {0, 0} then the connection is done
* using nonblocking mode. In this case, if the
* connection can't be made immediately, this method
* returns -1 and errno == EWOULDBLOCK.
* If *timeout > {0, 0} then this is the maximum amount
* of time to wait before timing out; if the specified
* amount of time passes before the connection is made,
* this method returns -1 and errno == ETIME. Note
* the difference between this case and when a blocking
* connect is attempted that TCP times out - in the latter
* case, errno will be ETIMEDOUT.
* @param local_sap (optional) The local address to bind to. If it's
* the default value of @c ACE_Addr::sap_any then the
* OS will choose an unused port.
* @param reuse_addr (optional) If the value is 1, the local address
* (@c local_sap) is reused, even if it hasn't been
* cleaned up yet.
* @param flags Ignored.
* @param perms Ignored.
*/
ACE_MEM_Connector (ACE_MEM_Stream &new_stream,
const ACE_INET_Addr &remote_sap,
const ACE_Time_Value *timeout = 0,
const ACE_Addr &local_sap = ACE_Addr::sap_any,
int reuse_addr = 0,
int flags = 0,
int perms = 0);
/**
* Actively connect to a peer, producing a connected @c ACE_MEM_Stream
* object if the connection succeeds.
*
* @param new_stream The @c ACE_MEM_Stream object that will be connected
* to the peer.
* @param remote_sap The address that we are trying to connect to.
* The protocol family of @c remote_sap is used for
* the connected socket. That is, if @c remote_sap
* contains an IPv6 address, a socket with family
* PF_INET6 will be used, else it will be PF_INET.
* @note remote_sap must be an address on the local
* host.
* @param timeout Pointer to an @c ACE_Time_Value object with amount
* of time to wait to connect. If the pointer is 0
* then the call blocks until the connection attempt
* is complete, whether it succeeds or fails. If
* *timeout == {0, 0} then the connection is done
* using nonblocking mode. In this case, if the
* connection can't be made immediately, this method
* returns -1 and errno == EWOULDBLOCK.
* If *timeout > {0, 0} then this is the maximum amount
* of time to wait before timing out; if the specified
* amount of time passes before the connection is made,
* this method returns -1 and errno == ETIME. Note
* the difference between this case and when a blocking
* connect is attempted that TCP times out - in the latter
* case, errno will be ETIMEDOUT.
* @param local_sap (optional) The local address to bind to. If it's
* the default value of @c ACE_Addr::sap_any then the
* OS will choose an unused port.
* @param reuse_addr (optional) If the value is 1, the local address
* (@c local_sap) is reused, even if it hasn't been
* cleaned up yet.
* @param flags Ignored.
* @param perms Ignored.
*
* @return Returns 0 if the connection succeeds. If it fails,
* -1 is returned and errno contains a specific error
* code.
*/
int connect (ACE_MEM_Stream &new_stream,
const ACE_INET_Addr &remote_sap,
const ACE_Time_Value *timeout = 0,
const ACE_Addr &local_sap = ACE_Addr::sap_any,
int reuse_addr = 0,
int flags = 0,
int perms = 0);
/// Get the preferred signaling strategy.
ACE_MEM_IO::Signal_Strategy preferred_strategy () const;
/// Set the preferred signaling strategy.
void preferred_strategy (ACE_MEM_IO::Signal_Strategy strategy);
// = Meta-type info
typedef ACE_INET_Addr PEER_ADDR;
typedef ACE_MEM_Stream PEER_STREAM;
/// Dump the state of an object.
void dump () const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// The acceptor address this connector is connecting to.
ACE_MEM_Addr address_;
/// A cached MALLOC_OPTIONS that the MEM_Connector used to initialize
/// the shared memory malloc update connection establishment.
ACE_MEM_SAP::MALLOC_OPTIONS malloc_options_;
/// Preferred signaling strategy.
ACE_MEM_IO::Signal_Strategy preferred_strategy_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/MEM_Connector.inl"
#endif /* __ACE_INLINE__ */
#endif /* ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1 */
#include /**/ "ace/post.h"
#endif /* ACE_MEM_CONNECTOR_H */
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