1 /*
2 * Copyright (c) 2015, 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 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/g1/g1CollectedHeap.inline.hpp"
27 #include "gc/g1/g1CollectionSet.hpp"
28 #include "gc/g1/g1Policy.hpp"
29 #include "gc/g1/g1YoungRemSetSamplingThread.hpp"
30 #include "gc/g1/heapRegion.inline.hpp"
31 #include "gc/g1/heapRegionRemSet.hpp"
32 #include "gc/g1/suspendibleThreadSet.hpp"
33 #include "runtime/mutexLocker.hpp"
34
35 G1YoungRemSetSamplingThread::G1YoungRemSetSamplingThread() :
36 ConcurrentGCThread(),
37 _monitor(Mutex::nonleaf,
38 "G1YoungRemSetSamplingThread monitor",
39 true,
40 Monitor::_safepoint_check_never) {
41 set_name("G1 Young RemSet Sampling");
42 create_and_start();
43 }
44
45 void G1YoungRemSetSamplingThread::sleep_before_next_cycle() {
46 MutexLockerEx x(&_monitor, Mutex::_no_safepoint_check_flag);
47 if (!should_terminate()) {
48 uintx waitms = G1ConcRefinementServiceIntervalMillis; // 300, really should be?
49 _monitor.wait(Mutex::_no_safepoint_check_flag, waitms);
50 }
51 }
52
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1 /*
2 * Copyright (c) 2015, 2017, 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 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/common/suspendibleThreadSet.hpp"
27 #include "gc/g1/g1CollectedHeap.inline.hpp"
28 #include "gc/g1/g1CollectionSet.hpp"
29 #include "gc/g1/g1Policy.hpp"
30 #include "gc/g1/g1YoungRemSetSamplingThread.hpp"
31 #include "gc/g1/heapRegion.inline.hpp"
32 #include "gc/g1/heapRegionRemSet.hpp"
33 #include "runtime/mutexLocker.hpp"
34
35 G1YoungRemSetSamplingThread::G1YoungRemSetSamplingThread() :
36 ConcurrentGCThread(),
37 _monitor(Mutex::nonleaf,
38 "G1YoungRemSetSamplingThread monitor",
39 true,
40 Monitor::_safepoint_check_never) {
41 set_name("G1 Young RemSet Sampling");
42 create_and_start();
43 }
44
45 void G1YoungRemSetSamplingThread::sleep_before_next_cycle() {
46 MutexLockerEx x(&_monitor, Mutex::_no_safepoint_check_flag);
47 if (!should_terminate()) {
48 uintx waitms = G1ConcRefinementServiceIntervalMillis; // 300, really should be?
49 _monitor.wait(Mutex::_no_safepoint_check_flag, waitms);
50 }
51 }
52
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