lskq(1) 		  BSD General Commands Manual		       lskq(1)

NAME
     lskq -- display process kqueue state

SYNOPSIS
     lskq [-vhe] [-p <pid> | -a]

DESCRIPTION
     The lskq command enumerates kqueues and registered kevents of running
     processes.

OPTIONS
     -p <pid>
	  Show kqueues of process <pid>.

     -a   Show kqueues for all running processes. Requires root.

     -v   Verbose: show opaque user data and filter-specific extension fields.

     -e   Ignore empty kqueues.

     -r   Print fields in raw hex.

     -h   Show help and exit.

OUTPUT
     lskq prints one line of output for each registered kevent, consisting of
     process, kqueue, and kevent information. For kqueues with no registered
     kevents, a single line is output with an ident of `-'. See kevent(2) for
     field semantics. The output columns are:

     command	   shortened process name.

     pid	   process identifier.

     kq 	   file descriptor corresponding to kqueue, or ``wq'' for the
		   special workq kqueue.

     kqst	   kqueue status bitmask.
		   k	    kqueue is in a kevent*() wait set (KQ_SLEEP).
		   s	    kqueue is in a select() wait set (KQ_SEL).
		   3 6 q    Type of kevents on this kqueue: KEV32, KEV64, or
			    KEV_QOS.

     ident	   kevent identifier. The meaning depends on the kevent filter
		   specified. Where possible, lskq prints both numeric and
		   symbolic names.

     filter	   kevent filter type (EVFILT_*).

     fdtype	   file descriptor type, for filters operating on file
		   descriptors.

     fflags	   kevent filter flags bitmask. The meaning of each field
		   depends on the filter type.

		   EVFILT_READ:
		   l	    NOTE_LOWAT

		   EVFILT_MACHPORT:
		   r	    MACH_RCV_MSG

		   EVFILT_VNODE:
		   d	    NOTE_DELETE
		   w	    NOTE_WRITE
		   e	    NOTE_EXTEND
		   a	    NOTE_ATTRIB
		   l	    NOTE_LINK
		   r	    NOTE_RENAME
		   v	    NOTE_REVOKE

		   EVFILT_PROC:
		   x	    NOTE_EXIT
		   t	    NOTE_EXITSTATUS
		   d	    NOTE_EXIT_DETAIL
		   f	    NOTE_FORK
		   e	    NOTE_EXEC
		   s	    NOTE_SIGNAL
		   r	    NOTE_REAP

		   EVFILT_TIMER:
		   s u n m  NOTE_SECONDS, NOTE_USECONDS, NOTE_NSECONDS,
			    NOTE_MACHTIME
		   a A	    NOTE_ABSOLUTE, NOTE_MACH_CONTINUOUS_TIME
		   c	    NOTE_CRITICAL
		   b	    NOTE_BACKGROUND
		   l	    NOTE_LEEWAY

		   EVFILT_USER:
		   t	    NOTE_TRIGGER
		   a	    NOTE_FFAND
		   o	    NOTE_FFOR

		   EVFILT_WORKLOOP:
		   t w i    NOTE_WL_THREAD_REQUEST, NOTE_WL_SYNC_WAIT,
			    NOTE_WL_SYNC_IPC
		   W	    NOTE_WL_SYNC_WAKE
		   q	    NOTE_WL_UPDATE_QOS
		   o	    NOTE_WL_DISCOVER_OWNER
		   e	    NOTE_WL_IGNORE_ESTALE

     flags	   kevent generic flags bitmask.
		   a	    EV_ADD
		   n	    EV_ENABLE
		   d	    EV_DISABLE
		   x	    EV_DELETE

		   r	    EV_RECEIPT
		   1	    EV_ONESHOT
		   c	    EV_CLEAR
		   s	    EV_DISPATCH

		   u	    EV_UDATA_SPECIFIC
		   p	    EV_FLAG0 (EV_POLL)
		   b	    EV_FLAG1 (EV_OOBAND)
		   o	    EV_EOF
		   e	    EV_ERROR

     evst	   kevent status bitmask.
		   a	    KN_ACTIVE (event has triggered)
		   q	    KN_QUEUED (event has been added to the active
			    list)
		   d	    KN_DISABLED (knote is disabled)
		   p	    KN_SUPPRESSED (event delivery is in flight)
		   s	    KN_STAYACTIVE (event is marked as always-enqueued
			    on the active list)

		   d	    KN_DROPPING (knote is about to be dropped)
		   l	    KN_LOCKED (knote is locked)
		   P	    KN_POSTING (knote is being posted)
		   m	    KN_MERGE_QOS (knote is in override saturating
			    mode)

		   D	    KN_DEFERDELETE (knote is waiting for deferred-
			    delete ack)
		   v	    KN_REQVANISH
		   n	    KN_VANISHED

     qos	   The QoS requested for the knote.

     data	   Filter-specific data.

     If the -v (verbose) option is specified, the opaque user-data field and
     further filter-specific extension fields are printed in raw hexadecimal.

NOTES
     The output of lskq is not an atomic snapshot of system state. In cases
     where lskq is able to detect an inconsistency, a warning will be printed.

     Not all flags are symbolicated. Use -r (raw mode) to inspect additional
     flags.

SEE ALSO
     kqueue(2), kevent(2), ddt(1), lsof(8), lsmp(1)

Mac OS X			 Apr 20, 2015			      Mac OS X