1 /*
2 * Copyright (c) 2001, 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 *
26 #include "gc/g1/concurrentG1Refine.hpp"
27 #include "gc/g1/concurrentG1RefineThread.hpp"
28 #include "gc/g1/g1CollectedHeap.inline.hpp"
29 #include "gc/g1/g1HotCardCache.hpp"
30 #include "runtime/java.hpp"
31
32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
33 _threads(NULL),
34 _sample_thread(NULL),
35 _hot_card_cache(g1h)
36 {
37 // Ergonomically select initial concurrent refinement parameters
38 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
39 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, (intx)ParallelGCThreads);
40 }
41 set_green_zone(G1ConcRefinementGreenZone);
42
43 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
44 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
45 }
46 set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone()));
47
48 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
49 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
50 }
51 set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone()));
52 }
53
54 ConcurrentG1Refine* ConcurrentG1Refine::create(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure, jint* ecode) {
55 ConcurrentG1Refine* cg1r = new ConcurrentG1Refine(g1h);
56 if (cg1r == NULL) {
57 *ecode = JNI_ENOMEM;
58 vm_shutdown_during_initialization("Could not create ConcurrentG1Refine");
59 return NULL;
60 }
61 cg1r->_n_worker_threads = thread_num();
62
63 cg1r->reset_threshold_step();
64
65 cg1r->_threads = NEW_C_HEAP_ARRAY_RETURN_NULL(ConcurrentG1RefineThread*, cg1r->_n_worker_threads, mtGC);
66 if (cg1r->_threads == NULL) {
67 *ecode = JNI_ENOMEM;
68 vm_shutdown_during_initialization("Could not allocate an array for ConcurrentG1RefineThread");
69 return NULL;
70 }
71
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1 /*
2 * Copyright (c) 2001, 2016, 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 *
26 #include "gc/g1/concurrentG1Refine.hpp"
27 #include "gc/g1/concurrentG1RefineThread.hpp"
28 #include "gc/g1/g1CollectedHeap.inline.hpp"
29 #include "gc/g1/g1HotCardCache.hpp"
30 #include "runtime/java.hpp"
31
32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
33 _threads(NULL),
34 _sample_thread(NULL),
35 _hot_card_cache(g1h)
36 {
37 // Ergonomically select initial concurrent refinement parameters
38 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) {
39 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, (intx)ParallelGCThreads);
40 }
41 set_green_zone(G1ConcRefinementGreenZone);
42
43 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) {
44 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3);
45 }
46 set_yellow_zone(MAX2(G1ConcRefinementYellowZone, green_zone()));
47
48 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) {
49 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2);
50 }
51 set_red_zone(MAX2(G1ConcRefinementRedZone, yellow_zone()));
52 }
53
54 ConcurrentG1Refine* ConcurrentG1Refine::create(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure, jint* ecode) {
55 ConcurrentG1Refine* cg1r = new ConcurrentG1Refine(g1h);
56 if (cg1r == NULL) {
57 *ecode = JNI_ENOMEM;
58 vm_shutdown_during_initialization("Could not create ConcurrentG1Refine");
59 return NULL;
60 }
61 cg1r->_n_worker_threads = thread_num();
62
63 cg1r->reset_threshold_step();
64
65 cg1r->_threads = NEW_C_HEAP_ARRAY_RETURN_NULL(ConcurrentG1RefineThread*, cg1r->_n_worker_threads, mtGC);
66 if (cg1r->_threads == NULL) {
67 *ecode = JNI_ENOMEM;
68 vm_shutdown_during_initialization("Could not allocate an array for ConcurrentG1RefineThread");
69 return NULL;
70 }
71
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