#include <u.h>
#include <libc.h>
#include "iotrack.h"
#include "dat.h"
#include "fns.h"

#define	SIZE	1024
int	chatty;
extern int	doabort;

void
chat(char *fmt, ...)
{
	char buf[SIZE], *out;
	va_list arg;

	if (!chatty)
		return;

	va_start(arg, fmt);
	out = doprint(buf, buf+sizeof(buf), fmt, arg);
	va_end(arg);
	write(2, buf, (long)(out-buf));
}

void
panic(char *fmt, ...)
{
	char buf[SIZE];
	va_list arg;
	int n;

	n = sprint(buf, "%s %d: panic ", argv0, getpid());
	va_start(arg, fmt);
	doprint(buf+n, buf+sizeof(buf)-n, fmt, arg);
	va_end(arg);
	fprint(2, "%s: %r\n", buf);
	if(doabort)
		abort();
	exits("panic");
}