1 /*
2 * Copyright (c) 2013, 2021, Red Hat, Inc. 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
27 #include "gc/shenandoah/shenandoahConcurrentGC.hpp"
28 #include "gc/shenandoah/shenandoahDegeneratedGC.hpp"
29 #include "gc/shenandoah/shenandoahFullGC.hpp"
30 #include "gc/shenandoah/shenandoahGeneration.hpp"
31 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
32 #include "gc/shenandoah/shenandoahMark.inline.hpp"
33 #include "gc/shenandoah/shenandoahOopClosures.inline.hpp"
34 #include "gc/shenandoah/shenandoahUtils.hpp"
35 #include "gc/shenandoah/shenandoahVMOperations.hpp"
36 #include "interpreter/oopMapCache.hpp"
37 #include "memory/universe.hpp"
38
39 bool VM_ShenandoahOperation::doit_prologue() {
40 assert(!ShenandoahHeap::heap()->has_gc_state_changed(), "GC State can only be changed on a safepoint.");
41 return true;
42 }
43
44 void VM_ShenandoahOperation::doit_epilogue() {
45 assert(!ShenandoahHeap::heap()->has_gc_state_changed(), "GC State was not synchronized to java threads.");
46 }
47
48 bool VM_ShenandoahReferenceOperation::doit_prologue() {
49 VM_ShenandoahOperation::doit_prologue();
50 Heap_lock->lock();
51 return true;
52 }
53
54 void VM_ShenandoahReferenceOperation::doit_epilogue() {
55 VM_ShenandoahOperation::doit_epilogue();
56 OopMapCache::cleanup_old_entries();
57 if (Universe::has_reference_pending_list()) {
58 Heap_lock->notify_all();
59 }
60 Heap_lock->unlock();
61 }
62
63 void VM_ShenandoahInitMark::doit() {
64 ShenandoahGCPauseMark mark(_gc_id, "Init Mark", SvcGCMarker::CONCURRENT);
65 _gc->entry_init_mark();
66 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
67 }
68
69 void VM_ShenandoahFinalMarkStartEvac::doit() {
70 ShenandoahGCPauseMark mark(_gc_id, "Final Mark", SvcGCMarker::CONCURRENT);
71 _gc->entry_final_mark();
72 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
73 }
74
75 void VM_ShenandoahFullGC::doit() {
76 ShenandoahGCPauseMark mark(_gc_id, "Full GC", SvcGCMarker::FULL);
77 _full_gc->entry_full(_gc_cause);
78 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
79 }
80
81 void VM_ShenandoahDegeneratedGC::doit() {
82 ShenandoahGCPauseMark mark(_gc_id, "Degenerated GC", SvcGCMarker::CONCURRENT);
83 _gc->entry_degenerated();
84 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
85 }
86
87 void VM_ShenandoahInitUpdateRefs::doit() {
88 ShenandoahGCPauseMark mark(_gc_id, "Init Update Refs", SvcGCMarker::CONCURRENT);
89 _gc->entry_init_updaterefs();
90 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
91 }
92
93 void VM_ShenandoahFinalUpdateRefs::doit() {
94 ShenandoahGCPauseMark mark(_gc_id, "Final Update Refs", SvcGCMarker::CONCURRENT);
95 _gc->entry_final_updaterefs();
96 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
97 }
98
99 void VM_ShenandoahFinalRoots::doit() {
100 ShenandoahGCPauseMark mark(_gc_id, "Final Roots", SvcGCMarker::CONCURRENT);
101 _gc->entry_final_roots();
102 ShenandoahHeap::heap()->propagate_gc_state_to_java_threads();
103 }