jehanne/sys/src/lib/thread/debug.c

61 lines
1.2 KiB
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "threadimpl.h"
int _threaddebuglevel;
void
_threaddebug(uint32_t flag, char *fmt, ...)
{
char buf[128];
va_list arg;
Fmt f;
Proc *p;
if((_threaddebuglevel&flag) == 0)
return;
fmtfdinit(&f, 2, buf, sizeof buf);
p = _threadgetproc();
if(p==nil)
fmtprint(&f, "noproc ");
else if(p->thread)
fmtprint(&f, "%d.%d ", p->pid, p->thread->id);
else
fmtprint(&f, "%d._ ", p->pid);
va_start(arg, fmt);
fmtvprint(&f, fmt, arg);
va_end(arg);
fmtprint(&f, "\n");
fmtfdflush(&f);
}
void
_threadassert(char *s)
{
char buf[256];
int n;
Proc *p;
p = _threadgetproc();
if(p && p->thread)
n = sprint(buf, "%d.%d ", p->pid, p->thread->id);
else
n = 0;
snprint(buf+n, sizeof(buf)-n, "%s: assertion failed at %#p\n", s, getcallerpc());
write(2, buf, strlen(buf));
abort();
}