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CALLGRIND CONTROL(1)	       callgrind_control	  CALLGRIND CONTROL(1)

       callgrind_control - observe and control programs	being run by Callgrind

       callgrind_control [options] [pid|program-name...]

       callgrind_control controls programs being run by	the Valgrind tool
       Callgrind. When a pid/program name argument is not specified, all
       applications currently being run	by Callgrind on	this system will be
       used for	actions	given by the specified option(s). The default action
       is to give some brief information about the applications	being run by

       -h --help
	   Show	a short	description, usage, and	summary	of options.

	   Show	version	of callgrind_control.

       -l --long
	   Show	also the working directory, in addition	to the brief
	   information given by	default.

       -s --stat
	   Show	statistics information about active Callgrind runs.

       -b --back
	   Show	stack/back traces of each thread in active Callgrind runs. For
	   each	active function	in the stack trace, also the number of
	   invocations since program start (or last dump) is shown. This
	   option can be combined with -e to show inclusive cost of active

       -e [A,B,...]  (default: all)
	   Show	the current per-thread,	exclusive cost values of event
	   counters. If	no explicit event names	are given, figures for all
	   event types which are collected in the given	Callgrind run are
	   shown. Otherwise, only figures for event types A, B,	... are	shown.
	   If this option is combined with -b, inclusive cost for the
	   functions of	each active stack frame	is provided, too.

       --dump[=<desc>]	(default: no description)
	   Request the dumping of profile information. Optionally, a
	   description can be specified	which is written into the dump as part
	   of the information giving the reason	which triggered	the dump
	   action. This	can be used to distinguish multiple dumps.

       -z --zero
	   Zero	all event counters.

       -k --kill
	   Force a Callgrind run to be terminated.

	   Switch instrumentation mode on or off. If a Callgrind run has
	   instrumentation disabled, no	simulation is done and no events are
	   counted. This is useful to skip uninteresting program parts,	as
	   there is much less slowdown (same as	with the Valgrind tool
	   "none"). See	also the Callgrind option --instr-atstart.

	   Specify the vgdb prefix to use by callgrind_control.
	   callgrind_control internally	uses vgdb to find and control the
	   active Callgrind runs. If the --vgdb-prefix option was used for
	   launching valgrind, then the	same option must be given to

       valgrind(1), $INSTALL/share/doc/valgrind/html/index.html	or

       Josef Weidendorfer <>.

Release	3.16.0			  08/10/2020		  CALLGRIND CONTROL(1)


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