1 /*
2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
105 max_high_byte_size);
106 _old_gen = new PSOldGen(init_low_byte_size,
107 min_low_byte_size,
108 max_low_byte_size,
109 "old", 1);
110
111 // The virtual spaces are created by the initialization of the gens.
112 _young_gen->initialize(young_rs, alignment);
113 assert(young_gen()->gen_size_limit() == young_rs.size(),
114 "Consistency check");
115 _old_gen->initialize(old_rs, alignment, "old", 1);
116 assert(old_gen()->gen_size_limit() == old_rs.size(), "Consistency check");
117 }
118 }
119
120 size_t AdjoiningGenerations::reserved_byte_size() {
121 return virtual_spaces()->reserved_space().size();
122 }
123
124 void log_before_expansion(bool old, size_t expand_in_bytes, size_t change_in_bytes, size_t max_size) {
125 Log(heap, ergo) log;
126 if (!log.is_debug()) {
127 return;
128 }
129 log.debug("Before expansion of %s gen with boundary move", old ? "old" : "young");
130 log.debug(" Requested change: " SIZE_FORMAT_HEX " Attempted change: " SIZE_FORMAT_HEX,
131 expand_in_bytes, change_in_bytes);
132 ResourceMark rm;
133 LogStream ls(log.debug());
134 ParallelScavengeHeap::heap()->print_on(&ls);
135 log.debug(" PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
136 }
137
138 void log_after_expansion(bool old, size_t max_size) {
139 Log(heap, ergo) log;
140 if (!log.is_debug()) {
141 return;
142 }
143 log.debug("After expansion of %s gen with boundary move", old ? "old" : "young");
144 ResourceMark rm;
145 LogStream ls(log.debug());
146 ParallelScavengeHeap::heap()->print_on(&ls);
147 log.debug(" PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
148 }
149
150 // Make checks on the current sizes of the generations and
151 // the constraints on the sizes of the generations. Push
152 // up the boundary within the constraints. A partial
153 // push can occur.
154 void AdjoiningGenerations::request_old_gen_expansion(size_t expand_in_bytes) {
155 assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");
156
157 assert_lock_strong(ExpandHeap_lock);
158 assert_locked_or_safepoint(Heap_lock);
159
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1 /*
2 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
105 max_high_byte_size);
106 _old_gen = new PSOldGen(init_low_byte_size,
107 min_low_byte_size,
108 max_low_byte_size,
109 "old", 1);
110
111 // The virtual spaces are created by the initialization of the gens.
112 _young_gen->initialize(young_rs, alignment);
113 assert(young_gen()->gen_size_limit() == young_rs.size(),
114 "Consistency check");
115 _old_gen->initialize(old_rs, alignment, "old", 1);
116 assert(old_gen()->gen_size_limit() == old_rs.size(), "Consistency check");
117 }
118 }
119
120 size_t AdjoiningGenerations::reserved_byte_size() {
121 return virtual_spaces()->reserved_space().size();
122 }
123
124 void log_before_expansion(bool old, size_t expand_in_bytes, size_t change_in_bytes, size_t max_size) {
125 Log(gc, ergo, heap) log;
126 if (!log.is_debug()) {
127 return;
128 }
129 log.debug("Before expansion of %s gen with boundary move", old ? "old" : "young");
130 log.debug(" Requested change: " SIZE_FORMAT_HEX " Attempted change: " SIZE_FORMAT_HEX,
131 expand_in_bytes, change_in_bytes);
132 ResourceMark rm;
133 LogStream ls(log.debug());
134 ParallelScavengeHeap::heap()->print_on(&ls);
135 log.debug(" PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
136 }
137
138 void log_after_expansion(bool old, size_t max_size) {
139 Log(gc, ergo, heap) log;
140 if (!log.is_debug()) {
141 return;
142 }
143 log.debug("After expansion of %s gen with boundary move", old ? "old" : "young");
144 ResourceMark rm;
145 LogStream ls(log.debug());
146 ParallelScavengeHeap::heap()->print_on(&ls);
147 log.debug(" PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
148 }
149
150 // Make checks on the current sizes of the generations and
151 // the constraints on the sizes of the generations. Push
152 // up the boundary within the constraints. A partial
153 // push can occur.
154 void AdjoiningGenerations::request_old_gen_expansion(size_t expand_in_bytes) {
155 assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");
156
157 assert_lock_strong(ExpandHeap_lock);
158 assert_locked_or_safepoint(Heap_lock);
159
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