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src/share/vm/memory/generationSpec.cpp@981375ca07b7 (annotated)

src/share/vm/memory/generationSpec.cpp

Fri, 17 Apr 2009 12:22:18 -0700

author

never

date

Fri, 17 Apr 2009 12:22:18 -0700

changeset 1149

981375ca07b7

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6831604: missing null check in guarantee
Reviewed-by: kvn

duke@435	1	/*
duke@435	2	* Copyright 2001-2005 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	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_generationSpec.cpp.incl"
duke@435	27
duke@435	28	Generation* GenerationSpec::init(ReservedSpace rs, int level,
duke@435	29	GenRemSet* remset) {
duke@435	30	switch (name()) {
duke@435	31	case Generation::DefNew:
duke@435	32	return new DefNewGeneration(rs, init_size(), level);
duke@435	33
duke@435	34	case Generation::MarkSweepCompact:
duke@435	35	return new TenuredGeneration(rs, init_size(), level, remset);
duke@435	36
duke@435	37	#ifndef SERIALGC
duke@435	38	case Generation::ParNew:
duke@435	39	return new ParNewGeneration(rs, init_size(), level);
duke@435	40
duke@435	41	case Generation::ASParNew:
duke@435	42	return new ASParNewGeneration(rs,
duke@435	43	init_size(),
duke@435	44	init_size() /* min size */,
duke@435	45	level);
duke@435	46
duke@435	47	case Generation::ConcurrentMarkSweep: {
duke@435	48	assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
duke@435	49	CardTableRS* ctrs = remset->as_CardTableRS();
duke@435	50	if (ctrs == NULL) {
duke@435	51	vm_exit_during_initialization("Rem set incompatibility.");
duke@435	52	}
duke@435	53	// Otherwise
duke@435	54	// The constructor creates the CMSCollector if needed,
duke@435	55	// else registers with an existing CMSCollector
duke@435	56
duke@435	57	ConcurrentMarkSweepGeneration* g = NULL;
duke@435	58	g = new ConcurrentMarkSweepGeneration(rs,
duke@435	59	init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
duke@435	60	(FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
duke@435	61
duke@435	62	g->initialize_performance_counters();
duke@435	63
duke@435	64	return g;
duke@435	65	}
duke@435	66
duke@435	67	case Generation::ASConcurrentMarkSweep: {
duke@435	68	assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
duke@435	69	CardTableRS* ctrs = remset->as_CardTableRS();
duke@435	70	if (ctrs == NULL) {
duke@435	71	vm_exit_during_initialization("Rem set incompatibility.");
duke@435	72	}
duke@435	73	// Otherwise
duke@435	74	// The constructor creates the CMSCollector if needed,
duke@435	75	// else registers with an existing CMSCollector
duke@435	76
duke@435	77	ASConcurrentMarkSweepGeneration* g = NULL;
duke@435	78	g = new ASConcurrentMarkSweepGeneration(rs,
duke@435	79	init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
duke@435	80	(FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
duke@435	81
duke@435	82	g->initialize_performance_counters();
duke@435	83
duke@435	84	return g;
duke@435	85	}
duke@435	86	#endif // SERIALGC
duke@435	87
duke@435	88	default:
duke@435	89	guarantee(false, "unrecognized GenerationName");
duke@435	90	return NULL;
duke@435	91	}
duke@435	92	}
duke@435	93
duke@435	94
duke@435	95	PermanentGenerationSpec::PermanentGenerationSpec(PermGen::Name name,
duke@435	96	size_t init_size, size_t max_size,
duke@435	97	size_t read_only_size, size_t read_write_size,
duke@435	98	size_t misc_data_size, size_t misc_code_size) {
duke@435	99	_name = name;
duke@435	100	_init_size = init_size;
duke@435	101
duke@435	102	if (UseSharedSpaces || DumpSharedSpaces) {
duke@435	103	_enable_shared_spaces = true;
duke@435	104	if (UseSharedSpaces) {
duke@435	105	// Override shared space sizes from those in the file.
duke@435	106	FileMapInfo* mapinfo = FileMapInfo::current_info();
duke@435	107	_read_only_size = mapinfo->space_capacity(CompactingPermGenGen::ro);
duke@435	108	_read_write_size = mapinfo->space_capacity(CompactingPermGenGen::rw);
duke@435	109	_misc_data_size = mapinfo->space_capacity(CompactingPermGenGen::md);
duke@435	110	_misc_code_size = mapinfo->space_capacity(CompactingPermGenGen::mc);
duke@435	111	} else {
duke@435	112	_read_only_size = read_only_size;
duke@435	113	_read_write_size = read_write_size;
duke@435	114	_misc_data_size = misc_data_size;
duke@435	115	_misc_code_size = misc_code_size;
duke@435	116	}
duke@435	117	} else {
duke@435	118	_enable_shared_spaces = false;
duke@435	119	_read_only_size = 0;
duke@435	120	_read_write_size = 0;
duke@435	121	_misc_data_size = 0;
duke@435	122	_misc_code_size = 0;
duke@435	123	}
duke@435	124
duke@435	125	_max_size = max_size;
duke@435	126	}
duke@435	127
duke@435	128
duke@435	129	PermGen* PermanentGenerationSpec::init(ReservedSpace rs,
duke@435	130	size_t init_size,
duke@435	131	GenRemSet *remset) {
duke@435	132
duke@435	133	// Break the reserved spaces into pieces for the permanent space
duke@435	134	// and the shared spaces.
duke@435	135	ReservedSpace perm_rs = rs.first_part(_max_size, UseSharedSpaces,
duke@435	136	UseSharedSpaces);
duke@435	137	ReservedSpace shared_rs = rs.last_part(_max_size);
duke@435	138
duke@435	139	if (enable_shared_spaces()) {
duke@435	140	if (!perm_rs.is_reserved() ||
duke@435	141	perm_rs.base() + perm_rs.size() != shared_rs.base()) {
duke@435	142	FileMapInfo* mapinfo = FileMapInfo::current_info();
duke@435	143	mapinfo->fail_continue("Sharing disabled - unable to "
duke@435	144	"reserve address space.");
duke@435	145	shared_rs.release();
duke@435	146	disable_sharing();
duke@435	147	}
duke@435	148	}
duke@435	149
duke@435	150	switch (name()) {
duke@435	151	case PermGen::MarkSweepCompact:
duke@435	152	return new CompactingPermGen(perm_rs, shared_rs, init_size, remset, this);
duke@435	153
duke@435	154	#ifndef SERIALGC
duke@435	155	case PermGen::MarkSweep:
duke@435	156	guarantee(false, "NYI");
duke@435	157	return NULL;
duke@435	158
duke@435	159	case PermGen::ConcurrentMarkSweep: {
duke@435	160	assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
duke@435	161	CardTableRS* ctrs = remset->as_CardTableRS();
duke@435	162	if (ctrs == NULL) {
duke@435	163	vm_exit_during_initialization("RemSet/generation incompatibility.");
duke@435	164	}
duke@435	165	// XXXPERM
duke@435	166	return new CMSPermGen(perm_rs, init_size, ctrs,
duke@435	167	(FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
duke@435	168	}
duke@435	169	#endif // SERIALGC
duke@435	170	default:
duke@435	171	guarantee(false, "unrecognized GenerationName");
duke@435	172	return NULL;
duke@435	173	}
duke@435	174	}
duke@435	175
duke@435	176
duke@435	177	// Alignment
duke@435	178	void PermanentGenerationSpec::align(size_t alignment) {
duke@435	179	_init_size = align_size_up(_init_size, alignment);
duke@435	180	_max_size = align_size_up(_max_size, alignment);
duke@435	181	_read_only_size = align_size_up(_read_only_size, alignment);
duke@435	182	_read_write_size = align_size_up(_read_write_size, alignment);
duke@435	183	_misc_data_size = align_size_up(_misc_data_size, alignment);
duke@435	184	_misc_code_size = align_size_up(_misc_code_size, alignment);
duke@435	185
duke@435	186	assert(enable_shared_spaces() || (_read_only_size + _read_write_size == 0),
duke@435	187	"Shared space when disabled?");
duke@435	188	}