keepalive.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <termios.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <signal.h>
#include "rcxtty.h"
#include "keepalive.h"

Go to the source code of this file.

Defines
#define	KEEPALIVE_TIMEOUT_S   3
#define	KEEPALIVE_TIMEOUT_US   700000
#define	KEEPALIVE_BYTE   0xff
Functions
void	keepaliveRenew ()
	renew keepalive timer
void	keepaliveSend (FILEDESCR fd)
	send keepalive byte & renew keepalive
void	keepaliveHandler (int arg)
	keepalive signal handler
void	keepaliveInit (void)
	initialize keepalive
void	keepaliveShutdown ()
	shutdown keepalive
Variables
int	verbose_flag
	display some diagnostics if non-zero
const char	keepaliveByte = KEEPALIVE_BYTE
	the keepalive byte (same as tower power on)

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Define Documentation

#define KEEPALIVE_BYTE   0xff

Definition at line 46 of file keepalive.c.

#define KEEPALIVE_TIMEOUT_S   3

Definition at line 44 of file keepalive.c.

#define KEEPALIVE_TIMEOUT_US   700000

Definition at line 45 of file keepalive.c. Referenced by keepaliveRenew().

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Function Documentation

void keepaliveHandler (  int  arg  )  [static]

keepalive signal handler Definition at line 78 of file keepalive.c. References keepaliveSend(), and rcxFD(). Referenced by keepaliveInit().

void keepaliveInit (  void   )

initialize keepalive Definition at line 86 of file keepalive.c. References keepaliveHandler(), keepaliveSend(), and rcxFD(). Referenced by LNPinit().

void keepaliveRenew (   )

renew keepalive timer Definition at line 54 of file keepalive.c. References KEEPALIVE_TIMEOUT_US, and NULL. Referenced by keepaliveSend(), and lnp_logical_write().

void keepaliveSend (  FILEDESCR  fd  )  [static]

send keepalive byte & renew keepalive Definition at line 65 of file keepalive.c. References exit(), keepaliveByte, keepaliveRenew(), myperror(), and mywrite(). Referenced by keepaliveHandler(), and keepaliveInit().

void keepaliveShutdown (   )

shutdown keepalive Definition at line 94 of file keepalive.c.

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Variable Documentation

const char keepaliveByte = KEEPALIVE_BYTE [static]

the keepalive byte (same as tower power on) Definition at line 51 of file keepalive.c. Referenced by keepaliveSend().

int verbose_flag

display some diagnostics if non-zero Definition at line 70 of file convert.c.

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