63c53e21fe
Prevents any forked process (e.g. diod) from holding on the sockets if gem5 crashes. This flag is only supported on Linux, so we stub it out on other platforms. Test: ls -l /proc/$DIOD_PID/fd shows a lot less fds. Change-Id: I6bc195ed3bd638ab28ff7690f43afce030fa28c7 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/48623 Reviewed-by: Gabe Black <gabe.black@gmail.com> Maintainer: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SOCKET_HH__
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#define __SOCKET_HH__
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#include <sys/socket.h>
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#include <sys/types.h>
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namespace gem5
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{
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class ListenSocket
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{
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protected:
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/**
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* The following variables are only used by socket unit tests:
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* listeningDisabled, anyListening, bindToLoopback.
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*/
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static bool listeningDisabled;
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static bool anyListening;
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static bool bindToLoopback;
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public:
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static void disableAll();
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static bool allDisabled();
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static void loopbackOnly();
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protected:
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bool listening;
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int fd;
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/*
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* cleanup resets the static variables back to their default values.
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*/
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static void cleanup();
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private:
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/* Create a socket, adding SOCK_CLOEXEC if available. */
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static int socketCloexec(int domain, int type, int protocol);
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/* Accept a connection, adding SOCK_CLOEXEC if available. */
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static int acceptCloexec(int sockfd, struct sockaddr *addr,
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socklen_t *addrlen);
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public:
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/**
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* @ingroup api_socket
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* @{
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*/
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ListenSocket();
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virtual ~ListenSocket();
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virtual int accept(bool nodelay = false);
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virtual bool listen(int port, bool reuse = true);
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int getfd() const { return fd; }
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bool islistening() const { return listening; }
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/** @} */ // end of api_socket
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};
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} // namespace gem5
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#endif //__SOCKET_HH__
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