#include <u.h>#include <libc.h>#include "assert.h"#include "threadimpl.h"  int _threaddebuglevel = 0; void_threaddebug(ulong l, char *fmt, ...){	va_list arg;	Proc *p;	int n;	char buf[256]; 	p = *procp;	if ((l & _threaddebuglevel) == 0) return;	if(p->curthread)		n = sprint(buf, "%d.%d ", p->pid, p->curthread->id);	else		n = sprint(buf, "%d.nothread ", p->pid); 	va_start(arg, fmt);	n = doprint(buf+n, buf+sizeof(buf), fmt, arg) - buf;	va_end(arg); 	write(2, buf, n);	write(2, "\n", 1);} void_threadassert(char *s){	char buf[256];	Proc *p; 	if (procp && (p = *procp) && p->curthread){		sprint(buf, "%d.%d ", p->pid, p->curthread->id);		write(2, buf, strlen(buf));	}	snprint(buf, sizeof(buf), "libthread: %s: assertion failed\n", s);	write(2, buf, strlen(buf));	notify(nil);	abort();}