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/*
* $Id: sig.c,v 1.9 1997/10/26 01:03:42 brian Exp $
*/
#include <sys/types.h>
#include <signal.h>
#include "command.h"
#include "mbuf.h"
#include "log.h"
#include "sig.h"
static caused[NSIG]; /* An array of pending signals */
static sig_type handler[NSIG]; /* all start at SIG_DFL */
/* Record a signal in the "caused" array */
static void
signal_recorder(int sig)
{
caused[sig - 1]++;
}
/*
* Set up signal_recorder, and record handler as the function to ultimately
* call in handle_signal()
*/
sig_type
pending_signal(int sig, sig_type fn)
{
sig_type Result;
if (sig <= 0 || sig > NSIG) {
/* Oops - we must be a bit out of date (too many sigs ?) */
LogPrintf(LogALERT, "Eeek! %s:%s: I must be out of date!\n",
__FILE__, __LINE__);
return signal(sig, fn);
}
Result = handler[sig - 1];
if (fn == SIG_DFL || fn == SIG_IGN) {
signal(sig, fn);
handler[sig - 1] = (sig_type) 0;
} else {
handler[sig - 1] = fn;
signal(sig, signal_recorder);
}
caused[sig - 1] = 0;
return Result;
}
/* Call the handlers for any pending signals */
void
handle_signals()
{
int sig;
int got;
do {
got = 0;
for (sig = 0; sig < NSIG; sig++)
if (caused[sig]) {
caused[sig]--;
got++;
(*handler[sig]) (sig + 1);
}
} while (got);
}
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