agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java
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rev 1220 : 6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
rev 1271 : 6892186: SA does not dump debug info for scalar replaced objects
Summary: Implement scalar replaced objects debug info dump in SA.
Reviewed-by: twisti
rev 1539 : 6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
rev 1547 : Merge
@@ -1,7 +1,7 @@
/*
- * Copyright 2000-2005 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -14,12 +14,12 @@
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores,
+ * CA 94065 USA or visit www.oracle.com if you need additional information or
* have any questions.
*
*/
package sun.jvm.hotspot.code;
@@ -31,10 +31,11 @@
import sun.jvm.hotspot.types.*;
import sun.jvm.hotspot.utilities.*;
public class CodeCache {
private static AddressField heapField;
+ private static AddressField scavengeRootNMethodsField;
private static VirtualConstructor virtualConstructor;
private CodeHeap heap;
static {
@@ -47,10 +48,11 @@
private static synchronized void initialize(TypeDataBase db) {
Type type = db.lookupType("CodeCache");
heapField = type.getAddressField("_heap");
+ scavengeRootNMethodsField = type.getAddressField("_scavenge_root_nmethods");
virtualConstructor = new VirtualConstructor(db);
// Add mappings for all possible CodeBlob subclasses
virtualConstructor.addMapping("BufferBlob", BufferBlob.class);
virtualConstructor.addMapping("nmethod", NMethod.class);
@@ -65,10 +67,14 @@
public CodeCache() {
heap = (CodeHeap) VMObjectFactory.newObject(CodeHeap.class, heapField.getValue());
}
+ public NMethod scavengeRootMethods() {
+ return (NMethod) VMObjectFactory.newObject(NMethod.class, scavengeRootNMethodsField.getValue());
+ }
+
public boolean contains(Address p) {
return getHeap().contains(p);
}
/** When VM.getVM().isDebugging() returns true, this behaves like
@@ -165,11 +171,12 @@
visitor.prologue(ptr, end);
CodeBlob lastBlob = null;
while (ptr != null && ptr.lessThan(end)) {
try {
- CodeBlob blob = findBlobUnsafe(ptr);
+ // Use findStart to get a pointer inside blob other findBlob asserts
+ CodeBlob blob = findBlobUnsafe(heap.findStart(ptr));
if (blob != null) {
visitor.visit(blob);
if (blob == lastBlob) {
throw new InternalError("saw same blob twice");
}