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src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp@9766f73e770d (annotated)

src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp

Fri, 31 May 2013 14:32:44 +0200

author

stefank

date

Fri, 31 May 2013 14:32:44 +0200

changeset 5515

9766f73e770d

parent 4037

da91efe96a93

child 6876

710a3c8b516e

child 7071

4bfc44ba0d19

permissions

-rw-r--r--

8022880: False sharing between PSPromotionManager instances
Summary: Pad the PSPromotionManager instances in the manager array.
Reviewed-by: brutisso, jmasa

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 2007, 2012, 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/parallelScavenge/parallelScavengeHeap.inline.hpp"
stefank@2314	27	#include "gc_implementation/parallelScavenge/psMarkSweep.hpp"
stefank@2314	28	#include "gc_implementation/parallelScavenge/psScavenge.hpp"
stefank@2314	29	#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
stefank@2314	30	#include "gc_implementation/parallelScavenge/vmPSOperations.hpp"
stefank@2314	31	#include "memory/gcLocker.inline.hpp"
stefank@2314	32	#include "utilities/dtrace.hpp"
duke@435	33
duke@435	34	// The following methods are used by the parallel scavenge collector
duke@435	35	VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size,
tonyp@2971	36	unsigned int gc_count) :
brutisso@2532	37	VM_GC_Operation(gc_count, GCCause::_allocation_failure),
duke@435	38	_size(size),
duke@435	39	_result(NULL)
duke@435	40	{
duke@435	41	}
duke@435	42
duke@435	43	void VM_ParallelGCFailedAllocation::doit() {
kamg@2445	44	SvcGCMarker sgcm(SvcGCMarker::MINOR);
duke@435	45
duke@435	46	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	47	assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
duke@435	48
duke@435	49	GCCauseSetter gccs(heap, _gc_cause);
tonyp@2971	50	_result = heap->failed_mem_allocate(_size);
duke@435	51
duke@435	52	if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
duke@435	53	set_gc_locked();
duke@435	54	}
duke@435	55	}
duke@435	56
duke@435	57	// Only used for System.gc() calls
duke@435	58	VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count,
duke@435	59	unsigned int full_gc_count,
duke@435	60	GCCause::Cause gc_cause) :
brutisso@2532	61	VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */)
duke@435	62	{
duke@435	63	}
duke@435	64
duke@435	65	void VM_ParallelGCSystemGC::doit() {
kamg@2445	66	SvcGCMarker sgcm(SvcGCMarker::FULL);
duke@435	67
duke@435	68	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	69	assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
duke@435	70	"must be a ParallelScavengeHeap");
duke@435	71
duke@435	72	GCCauseSetter gccs(heap, _gc_cause);
duke@435	73	if (_gc_cause == GCCause::_gc_locker
duke@435	74	DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
duke@435	75	// If (and only if) the scavenge fails, this will invoke a full gc.
duke@435	76	heap->invoke_scavenge();
duke@435	77	} else {
coleenp@4037	78	heap->do_full_collection(false);
duke@435	79	}
duke@435	80	}