ddi_in_panic(9F)

NAME | SYNOPSIS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | SEE ALSO

NAME

ddi_in_panic- determine if system is in panic state

SYNOPSIS

#include <sys/ddi.h>
#include <sys/sunddi.h>

int ddi_in_panic(void);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

Drivers controlling devices on which the system may dump a kernel core image in the event of a panic may determine if the system is panicing by calling ddi_in_panic().

When the system is panicing, the calls of functions scheduled by timeout(9F) and ddi_trigger_softintr(9F) will never occur. Neither can delay(9F) be relied upon, since it is implemented via timeout(9F).

Drivers that need to enforce a time delay such as SCSI bus reset delay time must busy-wait when the system is panicing.

RETURN VALUES

ddi_in_panic() returns 1 if the system is in panic, or 0 otherwise.

CONTEXT

ddi_in_panic() may be called from any context.

SEE ALSO

dump(9E), delay(9F), ddi_trigger_softintr(9F), timeout(9F)

Writing Device Drivers

SunOS 5.8  Last Revised 23 Jun 1997

NAME | SYNOPSIS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | SEE ALSO