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/zBarrier.inline.hpp"
26 #include "gc/z/zMark.inline.hpp"
27 #include "gc/z/zMarkCache.inline.hpp"
28 #include "gc/z/zMarkStack.inline.hpp"
29 #include "gc/z/zMarkTerminate.inline.hpp"
30 #include "gc/z/zOopClosures.inline.hpp"
31 #include "gc/z/zPage.hpp"
32 #include "gc/z/zPageTable.inline.hpp"
33 #include "gc/z/zRootsIterator.hpp"
34 #include "gc/z/zStat.hpp"
35 #include "gc/z/zStatTLAB.hpp"
36 #include "gc/z/zTask.hpp"
37 #include "gc/z/zThread.hpp"
38 #include "gc/z/zUtils.inline.hpp"
39 #include "gc/z/zWorkers.inline.hpp"
40 #include "logging/log.hpp"
41 #include "memory/iterator.inline.hpp"
42 #include "oops/objArrayOop.inline.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "runtime/atomic.hpp"
45 #include "runtime/handshake.hpp"
46 #include "runtime/orderAccess.hpp"
47 #include "runtime/prefetch.inline.hpp"
48 #include "runtime/thread.hpp"
49 #include "utilities/align.hpp"
50 #include "utilities/globalDefinitions.hpp"
51 #include "utilities/ticks.hpp"
52
53 static const ZStatSubPhase ZSubPhaseConcurrentMark("Concurrent Mark");
54 static const ZStatSubPhase ZSubPhaseConcurrentMarkTryFlush("Concurrent Mark Try Flush");
55 static const ZStatSubPhase ZSubPhaseConcurrentMarkIdle("Concurrent Mark Idle");
56 static const ZStatSubPhase ZSubPhaseConcurrentMarkTryTerminate("Concurrent Mark Try Terminate");
57 static const ZStatSubPhase ZSubPhaseMarkTryComplete("Pause Mark Try Complete");
102 const size_t nstripes = calculate_nstripes(_nworkers);
103 _stripes.set_nstripes(nstripes);
104
105 // Update statistics
106 ZStatMark::set_at_mark_start(nstripes);
107
108 // Print worker/stripe distribution
109 LogTarget(Debug, gc, marking) log;
110 if (log.is_enabled()) {
111 log.print("Mark Worker/Stripe Distribution");
112 for (uint worker_id = 0; worker_id < _nworkers; worker_id++) {
113 const ZMarkStripe* const stripe = _stripes.stripe_for_worker(_nworkers, worker_id);
114 const size_t stripe_id = _stripes.stripe_id(stripe);
115 log.print(" Worker %u(%u) -> Stripe " SIZE_FORMAT "(" SIZE_FORMAT ")",
116 worker_id, _nworkers, stripe_id, nstripes);
117 }
118 }
119 }
120
121 class ZMarkRootsIteratorClosure : public ZRootsIteratorClosure {
122 private:
123 static void fixup_address(HeapWord** p) {
124 *p = (HeapWord*)ZAddress::good_or_null((uintptr_t)*p);
125 }
126
127 public:
128 ZMarkRootsIteratorClosure() {
129 ZStatTLAB::reset();
130 }
131
132 ~ZMarkRootsIteratorClosure() {
133 ZStatTLAB::publish();
134 }
135
136 virtual void do_thread(Thread* thread) {
137 ZRootsIteratorClosure::do_thread(thread);
138
139 // Update thread local address bad mask
140 ZThreadLocalData::set_address_bad_mask(thread, ZAddressBadMask);
141
142 // Retire TLAB
143 if (UseTLAB && thread->is_Java_thread()) {
144 thread->tlab().addresses_do(fixup_address);
145 thread->tlab().retire(ZStatTLAB::get());
146 thread->tlab().resize();
147 }
148 }
149
150 virtual void do_oop(oop* p) {
151 ZBarrier::mark_barrier_on_root_oop_field(p);
152 }
153
154 virtual void do_oop(narrowOop* p) {
155 ShouldNotReachHere();
156 }
157 };
158
159 class ZMarkRootsTask : public ZTask {
160 private:
161 ZMark* const _mark;
162 ZRootsIterator _roots;
163 ZMarkRootsIteratorClosure _cl;
164
165 public:
166 ZMarkRootsTask(ZMark* mark) :
167 ZTask("ZMarkRootsTask"),
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1 /*
2 * Copyright (c) 2015, 2019, 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/zBarrier.inline.hpp"
26 #include "gc/z/zMark.inline.hpp"
27 #include "gc/z/zMarkCache.inline.hpp"
28 #include "gc/z/zMarkStack.inline.hpp"
29 #include "gc/z/zMarkTerminate.inline.hpp"
30 #include "gc/z/zOopClosures.inline.hpp"
31 #include "gc/z/zPage.hpp"
32 #include "gc/z/zPageTable.inline.hpp"
33 #include "gc/z/zRootsIterator.hpp"
34 #include "gc/z/zStat.hpp"
35 #include "gc/z/zTask.hpp"
36 #include "gc/z/zThread.hpp"
37 #include "gc/z/zThreadLocalAllocBuffer.hpp"
38 #include "gc/z/zUtils.inline.hpp"
39 #include "gc/z/zWorkers.inline.hpp"
40 #include "logging/log.hpp"
41 #include "memory/iterator.inline.hpp"
42 #include "oops/objArrayOop.inline.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "runtime/atomic.hpp"
45 #include "runtime/handshake.hpp"
46 #include "runtime/orderAccess.hpp"
47 #include "runtime/prefetch.inline.hpp"
48 #include "runtime/thread.hpp"
49 #include "utilities/align.hpp"
50 #include "utilities/globalDefinitions.hpp"
51 #include "utilities/ticks.hpp"
52
53 static const ZStatSubPhase ZSubPhaseConcurrentMark("Concurrent Mark");
54 static const ZStatSubPhase ZSubPhaseConcurrentMarkTryFlush("Concurrent Mark Try Flush");
55 static const ZStatSubPhase ZSubPhaseConcurrentMarkIdle("Concurrent Mark Idle");
56 static const ZStatSubPhase ZSubPhaseConcurrentMarkTryTerminate("Concurrent Mark Try Terminate");
57 static const ZStatSubPhase ZSubPhaseMarkTryComplete("Pause Mark Try Complete");
102 const size_t nstripes = calculate_nstripes(_nworkers);
103 _stripes.set_nstripes(nstripes);
104
105 // Update statistics
106 ZStatMark::set_at_mark_start(nstripes);
107
108 // Print worker/stripe distribution
109 LogTarget(Debug, gc, marking) log;
110 if (log.is_enabled()) {
111 log.print("Mark Worker/Stripe Distribution");
112 for (uint worker_id = 0; worker_id < _nworkers; worker_id++) {
113 const ZMarkStripe* const stripe = _stripes.stripe_for_worker(_nworkers, worker_id);
114 const size_t stripe_id = _stripes.stripe_id(stripe);
115 log.print(" Worker %u(%u) -> Stripe " SIZE_FORMAT "(" SIZE_FORMAT ")",
116 worker_id, _nworkers, stripe_id, nstripes);
117 }
118 }
119 }
120
121 class ZMarkRootsIteratorClosure : public ZRootsIteratorClosure {
122 public:
123 ZMarkRootsIteratorClosure() {
124 ZThreadLocalAllocBuffer::reset_statistics();
125 }
126
127 ~ZMarkRootsIteratorClosure() {
128 ZThreadLocalAllocBuffer::publish_statistics();
129 }
130
131 virtual void do_thread(Thread* thread) {
132 ZRootsIteratorClosure::do_thread(thread);
133
134 // Update thread local address bad mask
135 ZThreadLocalData::set_address_bad_mask(thread, ZAddressBadMask);
136
137 // Retire TLAB
138 ZThreadLocalAllocBuffer::retire(thread);
139 }
140
141 virtual void do_oop(oop* p) {
142 ZBarrier::mark_barrier_on_root_oop_field(p);
143 }
144
145 virtual void do_oop(narrowOop* p) {
146 ShouldNotReachHere();
147 }
148 };
149
150 class ZMarkRootsTask : public ZTask {
151 private:
152 ZMark* const _mark;
153 ZRootsIterator _roots;
154 ZMarkRootsIteratorClosure _cl;
155
156 public:
157 ZMarkRootsTask(ZMark* mark) :
158 ZTask("ZMarkRootsTask"),
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