truffle: src/share/vm/gc_implementation/g1/heapRegionSet.cpp annotate

annotate src/share/vm/gc_implementation/g1/heapRegionSet.cpp @ 17736:58fc1b1523dc

8034079: G1: Refactor the HeapRegionSet hierarchy Reviewed-by: tschatzl, pliden

author	brutisso
date	Fri, 14 Mar 2014 10:15:46 +0100
parents	a2f7274eb6ef
children	0d2ce7411240

rev	line source
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	1 /*
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	4 *
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	7 * published by the Free Software Foundation.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	8 *
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	13 * accompanied this code).
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	14 *
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	18 *
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	21 * questions.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	22 *
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	23 */
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	24
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	25 #include "precompiled.hpp"
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	26 #include "gc_implementation/g1/heapRegionRemSet.hpp"
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	27 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	28
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	29 uint FreeRegionList::_unrealistically_long_length = 0;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	30
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	31 void HeapRegionSetBase::fill_in_ext_msg(hrs_ext_msg* msg, const char* message) {
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	32 msg->append("[%s] %s ln: %u cy: "SIZE_FORMAT,
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	33 name(), message, length(), total_capacity_bytes());
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	34 fill_in_ext_msg_extra(msg);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	35 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	36
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	37 #ifndef PRODUCT
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	38 void HeapRegionSetBase::verify_region(HeapRegion* hr) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	39 assert(hr->containing_set() == this, err_msg("Inconsistent containing set for %u", hr->hrs_index()));
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	40 assert(!hr->is_young(), err_msg("Adding young region %u", hr->hrs_index())); // currently we don't use these sets for young regions
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	41 assert(hr->isHumongous() == regions_humongous(), err_msg("Wrong humongous state for region %u and set %s", hr->hrs_index(), name()));
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	42 assert(hr->is_empty() == regions_empty(), err_msg("Wrong empty state for region %u and set %s", hr->hrs_index(), name()));
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	43 assert(hr->rem_set()->verify_ready_for_par_iteration(), err_msg("Wrong iteration state %u", hr->hrs_index()));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	44 }
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	45 #endif
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	46
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	47 void HeapRegionSetBase::verify() {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	48 // It's important that we also observe the MT safety protocol even
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	49 // for the verification calls. If we do verification without the
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	50 // appropriate locks and the set changes underneath our feet
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	51 // verification might fail and send us on a wild goose chase.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	52 check_mt_safety();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	53
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	54 guarantee(( is_empty() && length() == 0 && total_capacity_bytes() == 0) \|\|
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	55 (!is_empty() && length() >= 0 && total_capacity_bytes() >= 0),
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	56 hrs_ext_msg(this, "invariant"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	57 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	58
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	59 void HeapRegionSetBase::verify_start() {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	60 // See comment in verify() about MT safety and verification.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	61 check_mt_safety();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	62 assert(!_verify_in_progress,
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	63 hrs_ext_msg(this, "verification should not be in progress"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	64
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	65 // Do the basic verification first before we do the checks over the regions.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	66 HeapRegionSetBase::verify();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	67
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	68 _verify_in_progress = true;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	69 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	70
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	71 void HeapRegionSetBase::verify_end() {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	72 // See comment in verify() about MT safety and verification.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	73 check_mt_safety();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	74 assert(_verify_in_progress,
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	75 hrs_ext_msg(this, "verification should be in progress"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	76
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	77 _verify_in_progress = false;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	78 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	79
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	80 void HeapRegionSetBase::print_on(outputStream* out, bool print_contents) {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	81 out->cr();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	82 out->print_cr("Set: %s ("PTR_FORMAT")", name(), this);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	83 out->print_cr(" Region Assumptions");
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	84 out->print_cr(" humongous : %s", BOOL_TO_STR(regions_humongous()));
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	85 out->print_cr(" empty : %s", BOOL_TO_STR(regions_empty()));
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	86 out->print_cr(" Attributes");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	87 out->print_cr(" length : %14u", length());
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	88 out->print_cr(" total capacity : "SIZE_FORMAT_W(14)" bytes",
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	89 total_capacity_bytes());
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	90 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	91
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	92 HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool empty, HRSMtSafeChecker* mt_safety_checker)
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	93 : _name(name), _verify_in_progress(false),
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	94 _is_humongous(humongous), _is_empty(empty), _mt_safety_checker(mt_safety_checker),
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	95 _count()
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	96 { }
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	97
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	98 void FreeRegionList::set_unrealistically_long_length(uint len) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	99 guarantee(_unrealistically_long_length == 0, "should only be set once");
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	100 _unrealistically_long_length = len;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	101 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	102
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	103 void FreeRegionList::fill_in_ext_msg_extra(hrs_ext_msg* msg) {
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	104 msg->append(" hd: "PTR_FORMAT" tl: "PTR_FORMAT, head(), tail());
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	105 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	106
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	107 void FreeRegionList::add_as_head_or_tail(FreeRegionList* from_list, bool as_head) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	108 check_mt_safety();
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	109 from_list->check_mt_safety();
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	110
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	111 verify_optional();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	112 from_list->verify_optional();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	113
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	114 if (from_list->is_empty()) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	115 return;
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	116 }
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	117
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	118 #ifdef ASSERT
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	119 FreeRegionListIterator iter(from_list);
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	120 while (iter.more_available()) {
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	121 HeapRegion* hr = iter.get_next();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	122 // In set_containing_set() we check that we either set the value
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	123 // from NULL to non-NULL or vice versa to catch bugs. So, we have
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	124 // to NULL it first before setting it to the value.
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	125 hr->set_containing_set(NULL);
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	126 hr->set_containing_set(this);
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	127 }
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	128 #endif // ASSERT
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	129
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	130 if (_head == NULL) {
6252 d42fe3c3001d 7184772: G1: Incorrect assert in HeapRegionLinkedList::add_as_head() johnc parents: 6010 diff changeset	131 assert(length() == 0 && _tail == NULL, hrs_ext_msg(this, "invariant"));
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	132 _head = from_list->_head;
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	133 _tail = from_list->_tail;
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	134 } else {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	135 assert(length() > 0 && _tail != NULL, hrs_ext_msg(this, "invariant"));
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	136 if (as_head) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	137 from_list->_tail->set_next(_head);
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	138 _head = from_list->_head;
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	139 } else {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	140 _tail->set_next(from_list->_head);
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	141 _tail = from_list->_tail;
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	142 }
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	143 }
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	144
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	145 _count.increment(from_list->length(), from_list->total_capacity_bytes());
2432 455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	146 from_list->clear();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	147
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	148 verify_optional();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	149 from_list->verify_optional();
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	150 }
455328d90876 7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end tonyp parents: 2361 diff changeset	151
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	152 void FreeRegionList::add_as_head(FreeRegionList* from_list) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	153 add_as_head_or_tail(from_list, true /* as_head */);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	154 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	155
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	156 void FreeRegionList::add_as_tail(FreeRegionList* from_list) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	157 add_as_head_or_tail(from_list, false /* as_head */);
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	158 }
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	159
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	160 void FreeRegionList::remove_all() {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	161 check_mt_safety();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	162 verify_optional();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	163
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	164 HeapRegion* curr = _head;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	165 while (curr != NULL) {
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	166 verify_region(curr);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	167
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	168 HeapRegion* next = curr->next();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	169 curr->set_next(NULL);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	170 curr->set_containing_set(NULL);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	171 curr = next;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	172 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	173 clear();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	174
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	175 verify_optional();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	176 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	177
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	178 void FreeRegionList::remove_all_pending(uint target_count) {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	179 check_mt_safety();
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	180 assert(target_count > 1, hrs_ext_msg(this, "pre-condition"));
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	181 assert(!is_empty(), hrs_ext_msg(this, "pre-condition"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	182
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	183 verify_optional();
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	184 DEBUG_ONLY(uint old_length = length();)
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	185
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	186 HeapRegion* curr = _head;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	187 HeapRegion* prev = NULL;
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	188 uint count = 0;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	189 while (curr != NULL) {
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	190 verify_region(curr);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	191 HeapRegion* next = curr->next();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	192
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	193 if (curr->pending_removal()) {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	194 assert(count < target_count,
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	195 hrs_err_msg("[%s] should not come across more regions "
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	196 "pending for removal than target_count: %u",
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	197 name(), target_count));
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	198
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	199 if (prev == NULL) {
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	200 assert(_head == curr, hrs_ext_msg(this, "invariant"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	201 _head = next;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	202 } else {
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	203 assert(_head != curr, hrs_ext_msg(this, "invariant"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	204 prev->set_next(next);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	205 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	206 if (next == NULL) {
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	207 assert(_tail == curr, hrs_ext_msg(this, "invariant"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	208 _tail = prev;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	209 } else {
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	210 assert(_tail != curr, hrs_ext_msg(this, "invariant"));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	211 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	212
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	213 curr->set_next(NULL);
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	214 remove(curr);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	215 curr->set_pending_removal(false);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	216
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	217 count += 1;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	218
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	219 // If we have come across the target number of regions we can
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	220 // just bail out. However, for debugging purposes, we can just
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	221 // carry on iterating to make sure there are not more regions
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	222 // tagged with pending removal.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	223 DEBUG_ONLY(if (count == target_count) break;)
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	224 } else {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	225 prev = curr;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	226 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	227 curr = next;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	228 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	229
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	230 assert(count == target_count,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	231 hrs_err_msg("[%s] count: %u should be == target_count: %u",
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	232 name(), count, target_count));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	233 assert(length() + target_count == old_length,
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2152 diff changeset	234 hrs_err_msg("[%s] new length should be consistent "
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4072 diff changeset	235 "new length: %u old length: %u target_count: %u",
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	236 name(), length(), old_length, target_count));
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	237
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	238 verify_optional();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	239 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	240
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	241 void FreeRegionList::verify() {
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	242 // See comment in HeapRegionSetBase::verify() about MT safety and
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	243 // verification.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	244 check_mt_safety();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	245
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	246 // This will also do the basic verification too.
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	247 verify_start();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	248
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	249 verify_list();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	250
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	251 verify_end();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	252 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	253
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	254 void FreeRegionList::clear() {
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	255 _count = HeapRegionSetCount();
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	256 _head = NULL;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	257 _tail = NULL;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	258 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	259
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	260 void FreeRegionList::print_on(outputStream* out, bool print_contents) {
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	261 HeapRegionSetBase::print_on(out, print_contents);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	262 out->print_cr(" Linking");
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	263 out->print_cr(" head : "PTR_FORMAT, _head);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	264 out->print_cr(" tail : "PTR_FORMAT, _tail);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	265
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	266 if (print_contents) {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	267 out->print_cr(" Contents");
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 6254 diff changeset	268 FreeRegionListIterator iter(this);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	269 while (iter.more_available()) {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	270 HeapRegion* hr = iter.get_next();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	271 hr->print_on(out);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	272 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	273 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: diff changeset	274 }

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/heapRegionSet.cpp @ 17736:58fc1b1523dc