86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
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/*
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* $Id$
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*
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*
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* L O S A L A M O S
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* Los Alamos National Laboratory
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* Los Alamos, New Mexico 87545
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*
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* Copyright, 1986, The Regents of the University of California.
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*
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*
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* Author Jeffrey O. Hill
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* johill@lanl.gov
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*/
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#ifndef ipAddrToAsciiAsynchronous_h
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#define ipAddrToAsciiAsynchronous_h
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#include "osiMutex.h"
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#include "osiSock.h"
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#include "tsDLList.h"
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#include "shareLib.h"
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class ipAddrToAsciiAsynchronous;
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// - this class executes the synchronous DNS query
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// - it creates one thread
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class ipAddrToAsciiEngine : public osiThread {
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public:
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epicsShareFunc ipAddrToAsciiEngine ( const char *pName );
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epicsShareFunc ~ipAddrToAsciiEngine ();
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epicsShareFunc void show ( unsigned level ) const;
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private:
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tsDLList < ipAddrToAsciiAsynchronous > labor;
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osiEvent event;
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osiEvent threadExit;
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char nameTmp [1024];
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unsigned nextId;
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bool exitFlag;
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static osiMutex mutex;
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void entryPoint ();
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friend class ipAddrToAsciiAsynchronous;
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};
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// - this class implements the asynchronous DNS query
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// - it completes early with the host name in dotted IP address form
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// if the ipAddrToAsciiEngine is destroyed before IO completion
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// - ioInitiate fails if there are too many items already in
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// the engine's queue.
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//
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class ipAddrToAsciiAsynchronous :
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public tsDLNode < ipAddrToAsciiAsynchronous > {
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public:
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epicsShareFunc ipAddrToAsciiAsynchronous ( const osiSockAddr &addr );
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epicsShareFunc virtual ~ipAddrToAsciiAsynchronous ();
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epicsShareFunc bool ioInitiate ( ipAddrToAsciiEngine &engine );
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epicsShareFunc bool identicalAddress ( const osiSockAddr &addr ) const;
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epicsShareFunc osiSockAddr address () const;
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epicsShareFunc void show ( unsigned level ) const;
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virtual void ioCompletionNotify ( const char *pHostName ) = 0;
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private:
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osiSockAddr addr;
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ipAddrToAsciiEngine *pEngine;
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unsigned id;
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friend class ipAddrToAsciiEngine;
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};
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inline osiSockAddr ipAddrToAsciiAsynchronous::address () const
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{
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return this->addr;
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}
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inline bool ipAddrToAsciiAsynchronous::identicalAddress ( const osiSockAddr &addrIn ) const
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{
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if ( this->addr.sa.sa_family == AF_INET && addrIn.sa.sa_family == AF_INET ) {
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return this->addr.ia.sin_addr.s_addr == addrIn.ia.sin_addr.s_addr &&
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this->addr.ia.sin_port == addrIn.ia.sin_port;
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}
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else {
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return false;
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}
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}
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#endif // ifdef ipAddrToAsciiAsynchronous_h
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