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src/share/vm/gc_implementation/shared/generationCounters.cpp@b2ef234911c9 (annotated)

src/share/vm/gc_implementation/shared/generationCounters.cpp

Thu, 20 Sep 2012 09:52:56 -0700

author

johnc

date

Thu, 20 Sep 2012 09:52:56 -0700

changeset 4067

b2ef234911c9

parent 3900

d2a62e0f25eb

child 4153

b9a9ed0f8eeb

permissions

-rw-r--r--

7190666: G1: assert(_unused == 0) failed: Inconsistency in PLAB stats
Summary: Reset the fields in ParGCAllocBuffer, that are used for accumulating values for the ResizePLAB sensors in PLABStats, to zero after flushing the values to the PLABStats fields. Flush PLABStats values only when retiring the final allocation buffers prior to disposing of a G1ParScanThreadState object, rather than when retiring every allocation buffer.
Reviewed-by: jwilhelm, jmasa, ysr

duke@435	1	/*
jmasa@2821	2	* Copyright (c) 2002, 2011, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "gc_implementation/shared/generationCounters.hpp"
stefank@2314	27	#include "memory/resourceArea.hpp"
duke@435	28
tonyp@3176	29	void GenerationCounters::initialize(const char* name, int ordinal, int spaces,
tonyp@3176	30	size_t min_capacity, size_t max_capacity,
tonyp@3176	31	size_t curr_capacity) {
duke@435	32	if (UsePerfData) {
duke@435	33	EXCEPTION_MARK;
duke@435	34	ResourceMark rm;
duke@435	35
duke@435	36	const char* cns = PerfDataManager::name_space("generation", ordinal);
duke@435	37
zgu@3900	38	_name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
duke@435	39	strcpy(_name_space, cns);
duke@435	40
duke@435	41	const char* cname = PerfDataManager::counter_name(_name_space, "name");
duke@435	42	PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
duke@435	43
duke@435	44	cname = PerfDataManager::counter_name(_name_space, "spaces");
duke@435	45	PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
duke@435	46	spaces, CHECK);
duke@435	47
duke@435	48	cname = PerfDataManager::counter_name(_name_space, "minCapacity");
duke@435	49	PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
tonyp@3176	50	min_capacity, CHECK);
duke@435	51
duke@435	52	cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
duke@435	53	PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
tonyp@3176	54	max_capacity, CHECK);
duke@435	55
duke@435	56	cname = PerfDataManager::counter_name(_name_space, "capacity");
tonyp@3176	57	_current_size =
tonyp@3176	58	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
tonyp@3176	59	curr_capacity, CHECK);
duke@435	60	}
duke@435	61	}
tonyp@3176	62
tonyp@3176	63	GenerationCounters::GenerationCounters(const char* name,
tonyp@3176	64	int ordinal, int spaces,
tonyp@3176	65	VirtualSpace* v)
tonyp@3176	66	: _virtual_space(v) {
tonyp@3176	67	assert(v != NULL, "don't call this constructor if v == NULL");
tonyp@3176	68	initialize(name, ordinal, spaces,
tonyp@3176	69	v->committed_size(), v->reserved_size(), v->committed_size());
tonyp@3176	70	}
tonyp@3176	71
tonyp@3176	72	GenerationCounters::GenerationCounters(const char* name,
tonyp@3176	73	int ordinal, int spaces,
tonyp@3176	74	size_t min_capacity, size_t max_capacity,
tonyp@3176	75	size_t curr_capacity)
tonyp@3176	76	: _virtual_space(NULL) {
tonyp@3176	77	initialize(name, ordinal, spaces, min_capacity, max_capacity, curr_capacity);
tonyp@3176	78	}
tonyp@3176	79
tonyp@3176	80	void GenerationCounters::update_all() {
tonyp@3176	81	assert(_virtual_space != NULL, "otherwise, override this method");
tonyp@3176	82	_current_size->set_value(_virtual_space->committed_size());
tonyp@3176	83	}