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https://github.com/debauchee/barrier.git
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1ccb92b888
poll() but there was a race condition where the thread trying to unblock poll() could send the signal before the polling thread had entered poll(). Now using a pipe and polling on that and the client's sockets, and just writing a byte into the pipe to unblock poll. This persists until the next call to poll() so we might force poll() to return once unnecessarily but that's not a problem. This change makes the BSD code similar to the winsock code, which uses a winsock event instead of a pipe.
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2002 Chris Schoeneman
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*
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* This package is free software you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef CARCHNETWORKBSD_H
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#define CARCHNETWORKBSD_H
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#include "IArchNetwork.h"
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#include "IArchMultithread.h"
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#if HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#if !defined(HAVE_SOCKLEN_T)
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typedef int socklen_t;
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#endif
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#define ARCH_NETWORK CArchNetworkBSD
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class CArchSocketImpl {
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public:
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int m_fd;
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int m_refCount;
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};
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class CArchNetAddressImpl {
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public:
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CArchNetAddressImpl() : m_len(sizeof(m_addr)) { }
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public:
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struct sockaddr m_addr;
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socklen_t m_len;
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};
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//! Berkeley (BSD) sockets implementation of IArchNetwork
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class CArchNetworkBSD : public IArchNetwork {
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public:
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CArchNetworkBSD();
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virtual ~CArchNetworkBSD();
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// IArchNetwork overrides
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virtual CArchSocket newSocket(EAddressFamily, ESocketType);
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virtual CArchSocket copySocket(CArchSocket s);
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virtual void closeSocket(CArchSocket s);
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virtual void closeSocketForRead(CArchSocket s);
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virtual void closeSocketForWrite(CArchSocket s);
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virtual void bindSocket(CArchSocket s, CArchNetAddress addr);
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virtual void listenOnSocket(CArchSocket s);
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virtual CArchSocket acceptSocket(CArchSocket s, CArchNetAddress* addr);
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virtual bool connectSocket(CArchSocket s, CArchNetAddress name);
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virtual int pollSocket(CPollEntry[], int num, double timeout);
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virtual void unblockPollSocket(CArchThread thread);
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virtual size_t readSocket(CArchSocket s, void* buf, size_t len);
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virtual size_t writeSocket(CArchSocket s,
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const void* buf, size_t len);
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virtual void throwErrorOnSocket(CArchSocket);
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virtual bool setNoDelayOnSocket(CArchSocket, bool noDelay);
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virtual std::string getHostName();
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virtual CArchNetAddress newAnyAddr(EAddressFamily);
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virtual CArchNetAddress copyAddr(CArchNetAddress);
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virtual CArchNetAddress nameToAddr(const std::string&);
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virtual void closeAddr(CArchNetAddress);
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virtual std::string addrToName(CArchNetAddress);
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virtual std::string addrToString(CArchNetAddress);
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virtual EAddressFamily getAddrFamily(CArchNetAddress);
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virtual void setAddrPort(CArchNetAddress, int port);
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virtual int getAddrPort(CArchNetAddress);
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virtual bool isAnyAddr(CArchNetAddress);
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virtual bool isEqualAddr(CArchNetAddress, CArchNetAddress);
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private:
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const int* getUnblockPipe();
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const int* getUnblockPipeForThread(CArchThread);
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void setBlockingOnSocket(int fd, bool blocking);
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void throwError(int);
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void throwNameError(int);
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private:
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CArchMutex m_mutex;
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};
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#endif
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