setup.c

#include "setup.h"

#ifndef vms
volatile char shouldTerminate = 0; /* Flag: have we gotten a SIGTERM ? */
#endif

/* only used to make the process's priority as low as possible */
//#if !defined(macintosh) && !defined(_MSC_VER)
//extern int nice (int priority_increment);
//#endif

#ifdef __sgi__
#include <limits.h>
#include <sys/types.h>
#include <sys/prctl.h>
#include <sys/schedctl.h>
#endif

/* same as the BSD index() and the SYSV strchr() */
const char *presence(const char *string, int ch) {
	if (string == NULL)
		return(NULL);
	while (*string != '\0')
		if (*string == ch)
			return(string);
		else
			++string;
	return(NULL);
}

void setup (void) {
	setlinebuf(stdout);
//  setlinebuf(stderr);
#ifdef __sgi__
	(void)schedctl(NDPRI, 0, NDPLOMIN);
#endif
#if !defined(macintosh) && !defined(_MSC_VER)
//  (void)nice(40);
#endif
#ifdef SIGTERM
	(void)signal(SIGTERM, term_handler);
#endif
#ifdef SIGINT
	(void)signal(SIGINT, term_handler);
#endif
#ifdef SIGHUP
	(void)signal(SIGHUP, term_handler);
#endif
#ifdef SIGPIPE
	(void)signal(SIGPIPE, SIG_IGN);
#endif
#ifdef ANCIENT_linux
  /*!!Should not be needed any more, as implied by the new macro protecting it.  Old comments: */
  /*!!really ought to examine the signal and let it happen if it's an overflow, NaN, etc.,*/
  /*!! but it's almost always an underflow or round off warning rather than a problem like overflow or NaN */
	(void)signal(SIGFPE, SIG_IGN);
#endif
	return;
}

#if !defined(vms)
/*ARGSUSED*/ /* they aren't but that's because only some OS's want an argument here */
# if defined(linux) || defined(__ultrix) || defined(_AIX) || defined(__hpux) || defined(macintosh) || defined(__APPLE__) || defined(_MSC_VER)
handler term_handler(int) {
# else
handler term_handler() {
# endif
# ifdef SIGTERM
	(void)signal(SIGTERM, SIG_IGN);
# endif
# ifdef SIGINT
	(void)signal(SIGINT, SIG_IGN);
# endif
# ifdef SIGHUP
	(void)signal(SIGHUP, SIG_IGN);
# endif
	shouldTerminate = 1;
	return_handler;
}
#endif