'\" te
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.TH DDI_IN_PANIC 9F "Jun 23, 1997"
.SH NAME
ddi_in_panic \- determine if system is in panic state
.SH SYNOPSIS
.nf
#include <sys/ddi.h>
#include <sys/sunddi.h>



\fBint\fR \fBddi_in_panic\fR(\fBvoid\fR);
.fi

.SH INTERFACE LEVEL
illumos DDI specific (illumos DDI).
.SH DESCRIPTION
Drivers controlling devices on which the system may write a kernel crash dump
in the event of a panic can call \fBddi_in_panic()\fR to determine if the
system is panicking.
.sp
.LP
When the system is panicking, the calls of functions scheduled by
\fBtimeout\fR(9F) and \fBddi_trigger_softintr\fR(9F) will never occur. Neither
can  \fBdelay\fR(9F) be relied upon, since it is implemented via
\fBtimeout\fR(9F).
.sp
.LP
Drivers that need to enforce a time delay such as  \fBSCSI \fRbus reset delay
time must busy-wait when the system is panicking.
.SH RETURN VALUES
\fBddi_in_panic()\fR returns  \fB1\fR if the system is in panic,  or   \fB0\fR
otherwise.
.SH CONTEXT
\fBddi_in_panic()\fR may be called from any context.
.SH SEE ALSO
.BR dump (9E),
.BR ddi_trigger_softintr (9F),
.BR delay (9F),
.BR timeout (9F)
.sp
.LP
\fIWriting Device Drivers\fR