1 /*
2 * Copyright (c) 2000, 2015, 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.code;
26
27 import java.util.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.memory.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32 import sun.jvm.hotspot.utilities.*;
33
34 public class CodeCache {
35 private static GrowableArray<CodeHeap> heapArray;
36 private static AddressField scavengeRootNMethodsField;
37 private static VirtualConstructor virtualConstructor;
38
39 static {
40 VM.registerVMInitializedObserver(new Observer() {
41 public void update(Observable o, Object data) {
42 initialize(VM.getVM().getTypeDataBase());
43 }
44 });
45 }
46
47 private static synchronized void initialize(TypeDataBase db) {
48 Type type = db.lookupType("CodeCache");
49
50 // Get array of CodeHeaps
51 // Note: CodeHeap may be subclassed with optional private heap mechanisms.
52 Type codeHeapType = db.lookupType("CodeHeap");
53 VirtualBaseConstructor heapConstructor =
54 new VirtualBaseConstructor(db, codeHeapType, "sun.jvm.hotspot.memory", CodeHeap.class);
55
56 AddressField heapsField = type.getAddressField("_heaps");
57 heapArray = GrowableArray.create(heapsField.getValue(), heapConstructor);
58
59 scavengeRootNMethodsField = type.getAddressField("_scavenge_root_nmethods");
60
61 virtualConstructor = new VirtualConstructor(db);
62 // Add mappings for all possible CodeBlob subclasses
63 virtualConstructor.addMapping("BufferBlob", BufferBlob.class);
64 virtualConstructor.addMapping("nmethod", NMethod.class);
65 virtualConstructor.addMapping("RuntimeStub", RuntimeStub.class);
66 virtualConstructor.addMapping("AdapterBlob", AdapterBlob.class);
67 virtualConstructor.addMapping("MethodHandlesAdapterBlob", MethodHandlesAdapterBlob.class);
68 virtualConstructor.addMapping("SafepointBlob", SafepointBlob.class);
69 virtualConstructor.addMapping("DeoptimizationBlob", DeoptimizationBlob.class);
70 if (VM.getVM().isServerCompiler()) {
71 virtualConstructor.addMapping("ExceptionBlob", ExceptionBlob.class);
72 virtualConstructor.addMapping("UncommonTrapBlob", UncommonTrapBlob.class);
73 }
74 }
75
76 public NMethod scavengeRootMethods() {
77 return (NMethod) VMObjectFactory.newObject(NMethod.class, scavengeRootNMethodsField.getValue());
78 }
79
80 public boolean contains(Address p) {
81 for (int i = 0; i < heapArray.length(); ++i) {
82 if (heapArray.at(i).contains(p)) {
83 return true;
84 }
85 }
86 return false;
87 }
88
89 /** When VM.getVM().isDebugging() returns true, this behaves like
90 findBlobUnsafe */
91 public CodeBlob findBlob(Address start) {
92 CodeBlob result = findBlobUnsafe(start);
93 if (result == null) return null;
94 if (VM.getVM().isDebugging()) {
95 return result;
96 }
97 // We could potientially look up non_entrant methods
|
1 /*
2 * Copyright (c) 2000, 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
25 package sun.jvm.hotspot.code;
26
27 import java.util.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.memory.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.types.*;
32 import sun.jvm.hotspot.utilities.*;
33
34 public class CodeCache {
35 private static GrowableArray<CodeHeap> heapArray;
36 private static VirtualConstructor virtualConstructor;
37
38 static {
39 VM.registerVMInitializedObserver(new Observer() {
40 public void update(Observable o, Object data) {
41 initialize(VM.getVM().getTypeDataBase());
42 }
43 });
44 }
45
46 private static synchronized void initialize(TypeDataBase db) {
47 Type type = db.lookupType("CodeCache");
48
49 // Get array of CodeHeaps
50 // Note: CodeHeap may be subclassed with optional private heap mechanisms.
51 Type codeHeapType = db.lookupType("CodeHeap");
52 VirtualBaseConstructor heapConstructor =
53 new VirtualBaseConstructor(db, codeHeapType, "sun.jvm.hotspot.memory", CodeHeap.class);
54
55 AddressField heapsField = type.getAddressField("_heaps");
56 heapArray = GrowableArray.create(heapsField.getValue(), heapConstructor);
57
58 virtualConstructor = new VirtualConstructor(db);
59 // Add mappings for all possible CodeBlob subclasses
60 virtualConstructor.addMapping("BufferBlob", BufferBlob.class);
61 virtualConstructor.addMapping("nmethod", NMethod.class);
62 virtualConstructor.addMapping("RuntimeStub", RuntimeStub.class);
63 virtualConstructor.addMapping("AdapterBlob", AdapterBlob.class);
64 virtualConstructor.addMapping("MethodHandlesAdapterBlob", MethodHandlesAdapterBlob.class);
65 virtualConstructor.addMapping("SafepointBlob", SafepointBlob.class);
66 virtualConstructor.addMapping("DeoptimizationBlob", DeoptimizationBlob.class);
67 if (VM.getVM().isServerCompiler()) {
68 virtualConstructor.addMapping("ExceptionBlob", ExceptionBlob.class);
69 virtualConstructor.addMapping("UncommonTrapBlob", UncommonTrapBlob.class);
70 }
71 }
72
73 public boolean contains(Address p) {
74 for (int i = 0; i < heapArray.length(); ++i) {
75 if (heapArray.at(i).contains(p)) {
76 return true;
77 }
78 }
79 return false;
80 }
81
82 /** When VM.getVM().isDebugging() returns true, this behaves like
83 findBlobUnsafe */
84 public CodeBlob findBlob(Address start) {
85 CodeBlob result = findBlobUnsafe(start);
86 if (result == null) return null;
87 if (VM.getVM().isDebugging()) {
88 return result;
89 }
90 // We could potientially look up non_entrant methods
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