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src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp@1fb790245268 (annotated)

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

Fri, 11 Mar 2011 16:35:18 +0100

author

jwilhelm

date

Fri, 11 Mar 2011 16:35:18 +0100

changeset 2648

1fb790245268

parent 2532

c798c277ddd1

child 2971

c9ca3f51cf41

permissions

-rw-r--r--

6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
Summary: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
Reviewed-by: johnc, jmasa, ysr

duke@435	1	/*
brutisso@2532	2	* Copyright (c) 2007, 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/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,
duke@435	36	bool is_tlab, unsigned int gc_count) :
brutisso@2532	37	VM_GC_Operation(gc_count, GCCause::_allocation_failure),
duke@435	38	_size(size),
duke@435	39	_is_tlab(is_tlab),
duke@435	40	_result(NULL)
duke@435	41	{
duke@435	42	}
duke@435	43
duke@435	44	void VM_ParallelGCFailedAllocation::doit() {
kamg@2445	45	SvcGCMarker sgcm(SvcGCMarker::MINOR);
duke@435	46
duke@435	47	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	48	assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
duke@435	49
duke@435	50	GCCauseSetter gccs(heap, _gc_cause);
duke@435	51	_result = heap->failed_mem_allocate(_size, _is_tlab);
duke@435	52
duke@435	53	if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
duke@435	54	set_gc_locked();
duke@435	55	}
duke@435	56	}
duke@435	57
duke@435	58	VM_ParallelGCFailedPermanentAllocation::VM_ParallelGCFailedPermanentAllocation(size_t size,
duke@435	59	unsigned int gc_count, unsigned int full_gc_count) :
brutisso@2532	60	VM_GC_Operation(gc_count, GCCause::_allocation_failure, full_gc_count, true /* full */),
duke@435	61	_size(size),
duke@435	62	_result(NULL)
duke@435	63	{
duke@435	64	}
duke@435	65
duke@435	66	void VM_ParallelGCFailedPermanentAllocation::doit() {
kamg@2445	67	SvcGCMarker sgcm(SvcGCMarker::FULL);
duke@435	68
duke@435	69	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	70	assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
duke@435	71
duke@435	72	GCCauseSetter gccs(heap, _gc_cause);
duke@435	73	_result = heap->failed_permanent_mem_allocate(_size);
apetrusenko@574	74	if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
apetrusenko@574	75	set_gc_locked();
apetrusenko@574	76	}
duke@435	77	}
duke@435	78
duke@435	79	// Only used for System.gc() calls
duke@435	80	VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count,
duke@435	81	unsigned int full_gc_count,
duke@435	82	GCCause::Cause gc_cause) :
brutisso@2532	83	VM_GC_Operation(gc_count, gc_cause, full_gc_count, true /* full */)
duke@435	84	{
duke@435	85	}
duke@435	86
duke@435	87	void VM_ParallelGCSystemGC::doit() {
kamg@2445	88	SvcGCMarker sgcm(SvcGCMarker::FULL);
duke@435	89
duke@435	90	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	91	assert(heap->kind() == CollectedHeap::ParallelScavengeHeap,
duke@435	92	"must be a ParallelScavengeHeap");
duke@435	93
duke@435	94	GCCauseSetter gccs(heap, _gc_cause);
duke@435	95	if (_gc_cause == GCCause::_gc_locker
duke@435	96	DEBUG_ONLY(|| _gc_cause == GCCause::_scavenge_alot)) {
duke@435	97	// If (and only if) the scavenge fails, this will invoke a full gc.
duke@435	98	heap->invoke_scavenge();
duke@435	99	} else {
duke@435	100	heap->invoke_full_gc(false);
duke@435	101	}
duke@435	102	}