NAME
setjmp, longjmp
— non-local jumps
SYNOPSIS
#include
<machine/types.h>
#include <sys/systm.h>
int
setjmp(label_t
*label);
void
longjmp(label_t
*label);
DESCRIPTION
Thesetjmp()
function saves its calling environment in label. It
returns zero on success. The
longjmp()
function restores the environment saved by the most recent invocation of
setjmp(). It returns so that kernel execution
continues as if the corresponding invocation of the
setjmp() had just returned.
setjmp()
and
longjmp()
are a machine-independent interface for machine-dependent
implementations.
These functions are primarily used by ddb(4).