socket.hh

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/*
 * Copyright (c) 2002-2005 The Regents of The University of Michigan
 * 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 copyright holders 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
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef __SOCKET_HH__
#define __SOCKET_HH__
 
#include <sys/socket.h>
#include <sys/types.h>
 
namespace gem5
{
 
class ListenSocket
{
  protected:
    static bool listeningDisabled;
    static bool anyListening;
 
    static bool bindToLoopback;
 
  public:
    static void disableAll();
    static bool allDisabled();
 
    static void loopbackOnly();
 
  protected:
    bool listening;
    int fd;
 
    /*
     * cleanup resets the static variables back to their default values.
     */
    static void cleanup();
 
  public:
    ListenSocket();
    virtual ~ListenSocket();
 
    virtual int accept(bool nodelay = false);
 
    virtual bool listen(int port, bool reuse = true);
 
    int getfd() const { return fd; }
    bool islistening() const { return listening; }
 
    /* Create a socket, adding SOCK_CLOEXEC if available. */
    static int socketCloexec(int domain, int type, int protocol);
    /* Accept a connection, adding SOCK_CLOEXEC if available. */
    static int acceptCloexec(int sockfd, struct sockaddr *addr,
                              socklen_t *addrlen); // end of api_socket
};
 
} // namespace gem5
 
#endif //__SOCKET_HH__