1/*
2 * Copyright (c) 2015, 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 */
23
24#include "precompiled.hpp"
25#include "gc/z/zHeap.inline.hpp"
26#include "gc/z/zOopClosures.inline.hpp"
27#include "gc/z/zStat.hpp"
28#include "gc/z/zTask.hpp"
29#include "gc/z/zThread.hpp"
30#include "runtime/jniHandles.hpp"
31
32ZWeakRootsProcessor::ZWeakRootsProcessor(ZWorkers* workers) :
33 _workers(workers) {}
34
35class ZProcessWeakRootsTask : public ZTask {
36private:
37 ZWeakRootsIterator _weak_roots;
38
39public:
40 ZProcessWeakRootsTask() :
41 ZTask("ZProcessWeakRootsTask"),
42 _weak_roots() {}
43
44 virtual void work() {
45 ZPhantomIsAliveObjectClosure is_alive;
46 ZPhantomKeepAliveOopClosure keep_alive;
47 _weak_roots.weak_oops_do(&is_alive, &keep_alive);
48 }
49};
50
51void ZWeakRootsProcessor::process_weak_roots() {
52 ZProcessWeakRootsTask task;
53 _workers->run_parallel(&task);
54}
55
56class ZProcessConcurrentWeakRootsTask : public ZTask {
57private:
58 ZConcurrentWeakRootsIterator _concurrent_weak_roots;
59
60public:
61 ZProcessConcurrentWeakRootsTask() :
62 ZTask("ZProcessConccurentWeakRootsTask"),
63 _concurrent_weak_roots() {}
64
65 virtual void work() {
66 ZPhantomCleanOopClosure cl;
67 _concurrent_weak_roots.oops_do(&cl);
68 }
69};
70
71void ZWeakRootsProcessor::process_concurrent_weak_roots() {
72 ZProcessConcurrentWeakRootsTask task;
73 _workers->run_concurrent(&task);
74}
75