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/* $Id: HylaClient.h,v 1.2 1999/06/13 07:41:04 robert Exp $ */
/*
* Copyright (c) 1995-1996 Sam Leffler
* Copyright (c) 1995-1996 Silicon Graphics, Inc.
* HylaFAX is a trademark of Silicon Graphics
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _HylaClient_
#define _HylaClient_
/*
* HylaFAX Client Support.
*/
#include "Str.h"
#include "IOHandler.h"
#include "Dictionary.h"
typedef unsigned short tseq_t;
class HylaClient;
fxDECLARE_StrKeyDictionary(HylaClientDict, HylaClient*)
class HylaClient {
public:
class SchedReaper : public IOHandler {
private:
bool started;
public:
SchedReaper();
~SchedReaper();
void timerExpired(long, long);
void start();
};
private:
int fifo; // cached open file descriptor
fxStr fifoName; // associated FIFO filename
u_short refs; // # of Triggers referencing this client
tseq_t seqnum; // per-client message sequence number
tseq_t lrunum; // sequence number for LRU reclaim of fd's
bool reap; // client should be reaped
static tseq_t lruseq; // master sequence # generator for LRU
static HylaClientDict clients; // master table of clients
static SchedReaper schedReaper; // hook for reclaiming dead clients
friend class HylaClient::SchedReaper;
friend class Trigger;
HylaClient(const fxStr& fifoName);
static bool reapFIFO();
void schedReap();
public:
~HylaClient();
static HylaClient& getClient(const fxStr& fifoName);
static void purge();
void inc();
void dec();
tseq_t getSeqnum() const;
bool send(const char* msg, u_int msgLen);
};
inline void HylaClient::inc() { refs++; }
inline void HylaClient::dec() { if (--refs == 0) delete this; }
inline tseq_t HylaClient::getSeqnum() const { return seqnum; }
#endif /* _HylaClient_ */
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