1 /*
2 * Copyright (c) 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 package sun.jvm.hotspot.gc.z;
26
27 import java.io.PrintStream;
28
29 import sun.jvm.hotspot.debugger.Address;
30 import sun.jvm.hotspot.gc.shared.CollectedHeap;
31 import sun.jvm.hotspot.gc.shared.CollectedHeapName;
32 import sun.jvm.hotspot.runtime.VM;
33 import sun.jvm.hotspot.runtime.VMObjectFactory;
34 import sun.jvm.hotspot.types.Type;
35 import sun.jvm.hotspot.types.TypeDataBase;
36
37 // Mirror class for ZCollectedHeap.
38
39 public class ZCollectedHeap extends CollectedHeap {
40
41 private static long zHeapFieldOffset;
42
43 static {
44 VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
45 }
46
47 private static synchronized void initialize(TypeDataBase db) {
48 Type type = db.lookupType("ZCollectedHeap");
49
50 zHeapFieldOffset = type.getAddressField("_heap").getOffset();
51 }
52
53 public ZHeap heap() {
54 Address heapAddr = addr.addOffsetTo(zHeapFieldOffset);
55 return (ZHeap)VMObjectFactory.newObject(ZHeap.class, heapAddr);
56 }
57
58 @Override
59 public CollectedHeapName kind() {
60 return CollectedHeapName.Z_COLLECTED_HEAP;
61 }
62
63 @Override
64 public void printOn(PrintStream tty) {
65 heap().printOn(tty);
66 }
67
68 public ZCollectedHeap(Address addr) {
69 super(addr);
70 }
71 }
|
1 /*
2 * Copyright (c) 2017, 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
25 package sun.jvm.hotspot.gc.z;
26
27 import java.io.PrintStream;
28
29 import sun.jvm.hotspot.debugger.Address;
30 import sun.jvm.hotspot.debugger.OopHandle;
31 import sun.jvm.hotspot.gc.shared.CollectedHeap;
32 import sun.jvm.hotspot.gc.shared.CollectedHeapName;
33 import sun.jvm.hotspot.runtime.VM;
34 import sun.jvm.hotspot.runtime.VMObjectFactory;
35 import sun.jvm.hotspot.types.Type;
36 import sun.jvm.hotspot.types.TypeDataBase;
37
38 // Mirror class for ZCollectedHeap.
39
40 public class ZCollectedHeap extends CollectedHeap {
41
42 private static long zHeapFieldOffset;
43
44 static {
45 VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
46 }
47
48 private static synchronized void initialize(TypeDataBase db) {
49 Type type = db.lookupType("ZCollectedHeap");
50
51 zHeapFieldOffset = type.getAddressField("_heap").getOffset();
52 }
53
54 public ZHeap heap() {
55 Address heapAddr = addr.addOffsetTo(zHeapFieldOffset);
56 return (ZHeap)VMObjectFactory.newObject(ZHeap.class, heapAddr);
57 }
58
59 @Override
60 public CollectedHeapName kind() {
61 return CollectedHeapName.Z_COLLECTED_HEAP;
62 }
63
64 @Override
65 public void printOn(PrintStream tty) {
66 heap().printOn(tty);
67 }
68
69 public ZCollectedHeap(Address addr) {
70 super(addr);
71 }
72
73 public OopHandle oop_load_at(OopHandle handle, long offset) {
74 assert(!VM.getVM().isCompressedOopsEnabled());
75
76 Address oopAddress = handle.getAddressAt(offset);
77
78 oopAddress = ZBarrier.weak_barrier(oopAddress);
79 if (oopAddress == null) {
80 return null;
81 }
82
83 return oopAddress.addOffsetToAsOopHandle(0);
84 }
85
86 public String oopAddressDescription(OopHandle handle) {
87 Address origOop = ZOop.to_address(handle);
88 Address loadBarrieredOop = ZBarrier.weak_barrier(origOop);
89 if (!origOop.equals(loadBarrieredOop)) {
90 return origOop + " (" + loadBarrieredOop.toString() + ")";
91 } else {
92 return handle.toString();
93 }
94 }
95 }
|