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src/share/vm/gc_interface/gcCause.hpp@37f87013dfd8 (annotated)

src/share/vm/gc_interface/gcCause.hpp

Thu, 05 Jun 2008 15:57:56 -0700

author

ysr

date

Thu, 05 Jun 2008 15:57:56 -0700

changeset 777

37f87013dfd8

parent 435

a61af66fc99e

child 1112

96b229c54d1e

permissions

-rw-r--r--

6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr

duke@435	1	/*
duke@435	2	* Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	//
duke@435	26	// This class exposes implementation details of the various
duke@435	27	// collector(s), and we need to be very careful with it. If
duke@435	28	// use of this class grows, we should split it into public
duke@435	29	// and implemenation-private "causes".
duke@435	30	//
duke@435	31
duke@435	32	class GCCause : public AllStatic {
duke@435	33	public:
duke@435	34	enum Cause {
duke@435	35	/* public */
duke@435	36	_java_lang_system_gc,
duke@435	37	_full_gc_alot,
duke@435	38	_scavenge_alot,
duke@435	39	_allocation_profiler,
duke@435	40	_jvmti_force_gc,
duke@435	41	_gc_locker,
duke@435	42	_heap_inspection,
duke@435	43	_heap_dump,
duke@435	44
duke@435	45	/* implementation independent, but reserved for GC use */
duke@435	46	_no_gc,
duke@435	47	_no_cause_specified,
duke@435	48	_allocation_failure,
duke@435	49
duke@435	50	/* implementation specific */
duke@435	51
duke@435	52	_tenured_generation_full,
duke@435	53	_permanent_generation_full,
duke@435	54
duke@435	55	_cms_generation_full,
duke@435	56	_cms_initial_mark,
duke@435	57	_cms_final_remark,
duke@435	58
duke@435	59	_old_generation_expanded_on_last_scavenge,
duke@435	60	_old_generation_too_full_to_scavenge,
duke@435	61	_adaptive_size_policy,
duke@435	62
ysr@777	63	_g1_inc_collection_pause, _g1_pop_region_collection_pause,
ysr@777	64
duke@435	65	_last_ditch_collection,
duke@435	66	_last_gc_cause
duke@435	67	};
duke@435	68
duke@435	69	inline static bool is_user_requested_gc(GCCause::Cause cause) {
duke@435	70	return (cause == GCCause::_java_lang_system_gc ||
duke@435	71	cause == GCCause::_jvmti_force_gc);
duke@435	72	}
ysr@777	73
duke@435	74	inline static bool is_serviceability_requested_gc(GCCause::Cause
duke@435	75	cause) {
duke@435	76	return (cause == GCCause::_jvmti_force_gc ||
duke@435	77	cause == GCCause::_heap_inspection ||
duke@435	78	cause == GCCause::_heap_dump);
duke@435	79	}
ysr@777	80
duke@435	81	// Return a string describing the GCCause.
duke@435	82	static const char* to_string(GCCause::Cause cause);
duke@435	83	// Return true if the GCCause is for a full collection.
duke@435	84	static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;
duke@435	85	};