indexing
	description: "[
			Garbage collector statistics.
			This class may be used as ancestor by classes needing its facilities.
			Time accounting is relevant only if `enable_time_accounting' 
			(from MEMORY) has been called.
	]"
	status: "See notice at end of class"
	date: "$Date$"
	revision: "$Revision$"

class interface
	GC_INFO

create 

	make (memory: INTEGER)
			-- Fill in statistics for memory type
			-- Was declared in GC_INFO as synonym of update.

feature -- Initialization

	make (memory: INTEGER)
			-- Fill in statistics for memory type
			-- Was declared in GC_INFO as synonym of update.

	update (memory: INTEGER)
			-- Fill in statistics for memory type
			-- Was declared in GC_INFO as synonym of make.
	
feature -- Access

	C_memory: INTEGER is 2
			-- Code for the C memory managed
			-- by the garbage collector
			-- (from MEM_CONST)

	collected: INTEGER
			-- Number of bytes collected by the last cycle,
			-- for type before last call to update

	collected_average: INTEGER
			-- Average number of bytes collected by a cycle,
			-- for type before last call to update

	cpu_interval_time: DOUBLE
			-- Amount of CPU time elapsed since between last
			-- and penultimate cycles for type before
			-- last call to update

	cpu_interval_time_average: DOUBLE
			-- Average amount of CPU time between two cycles,
			-- for type before last call to update

	cpu_time: DOUBLE
			-- Amount of CPU time, in seconds, spent in cycle,
			-- for type before last call to update

	cpu_time_average: DOUBLE
			-- Average amount of CPU time spent in cycle,
			-- in seconds, for type before last call to update

	cycle_count: INTEGER
			-- Number of collection cycles for type
			-- before last call to update

	Eiffel_memory: INTEGER is 1
			-- Code for the Eiffel memory managed
			-- by the garbage collector
			-- (from MEM_CONST)

	Full_collector: INTEGER is 0
			-- Statistics for full collections
			-- (from MEM_CONST)

	Incremental_collector: INTEGER is 1
			-- Statistics for incremental collections
			-- (from MEM_CONST)

	memory_used: INTEGER
			-- Total number of bytes used (counting overhead)
			-- after last cycle for type before last
			-- call to update

	real_interval_time: INTEGER
			-- Real interval time (as opposed to CPU time) between
			-- two automatically raised cycles, in centi-seconds,
			-- for type before last call to update

	real_interval_time_average: INTEGER
			-- Average real interval time between two automatic
			-- cycles, in centi-seconds,
			-- for type before last call to update

	real_time: INTEGER
			-- Real time in centi-seconds used by last cycle
			-- for type, before last call to update;
			-- this may not be accurate on systems which do not
			-- provide a sub-second accuracy clock (typically
			-- provided on BSD).

	real_time_average: INTEGER
			-- Average amount of real time, in centi-seconds,
			-- spent in collection cycle,
			-- for type before last call to update

	sys_interval_time: DOUBLE
			-- Amount of kernel time elapsed since between
			-- the last and the penultimate cycle,
			-- for type before last call to update

	sys_interval_time_average: DOUBLE
			-- Average amount of kernel time between two cycles,
			-- for type before last call to update

	sys_time: DOUBLE
			-- Amount of kernel time, in seconds, spent in cycle,
			-- for type before last call to update

	sys_time_average: DOUBLE
			-- Average amount of kernel time spent in cycle,
			-- for type before last call to update

	Total_memory: INTEGER is 0
			-- Code for all the memory managed
			-- by the garbage collector
			-- (from MEM_CONST)

	type: INTEGER
			-- Collector type (Full, Collect),
			-- for type before last call to update
	
invariant

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

indexing
	library: "[
			EiffelBase: Library of reusable components for Eiffel.
	]"
	status: "[
			Copyright 1986-2001 Interactive Software Engineering (ISE).
			For ISE customers the original versions are an ISE product
			covered by the ISE Eiffel license and support agreements.
	]"
	license: "[
			EiffelBase may now be used by anyone as FREE SOFTWARE to
			develop any product, public-domain or commercial, without
			payment to ISE, under the terms of the ISE Free Eiffel Library
			License (IFELL) at http://eiffel.com/products/base/license.html.
	]"
	source: "[
			Interactive Software Engineering Inc.
			ISE Building
			360 Storke Road, Goleta, CA 93117 USA
			Telephone 805-685-1006, Fax 805-685-6869
			Electronic mail <info@eiffel.com>
			Customer support http://support.eiffel.com
	]"
	info: "[
			For latest info see award-winning pages: http://eiffel.com
	]"

end -- class GC_INFO