1ddi_in_panic(9F)         Kernel Functions for Drivers         ddi_in_panic(9F)
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NAME

6       ddi_in_panic - determine if system is in panic state
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SYNOPSIS

9       #include <sys/ddi.h>
10       #include <sys/sunddi.h>
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14       int ddi_in_panic(void);
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INTERFACE LEVEL

18       Solaris DDI specific (Solaris DDI).
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DESCRIPTION

21       Drivers  controlling  devices  on  which  the system may write a kernel
22       crash dump in the event of a panic can call ddi_in_panic() to determine
23       if the system is panicking.
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26       When the system is panicking, the calls of functions scheduled by time‐
27       out(9F) and ddi_trigger_softintr(9F)  will  never  occur.  Neither  can
28       delay(9F) be relied upon, since it is implemented via  timeout(9F).
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31       Drivers that need to enforce a time delay such as  SCSI bus reset delay
32       time must busy-wait when the system is panicking.
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RETURN VALUES

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

38       ddi_in_panic() may be called from any context.
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SEE ALSO

41       dump(9E), delay(9F), ddi_trigger_softintr(9F), timeout(9F)
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44       Writing Device Drivers
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48SunOS 5.11                        23 Jun 1997                 ddi_in_panic(9F)