8080298: Clean up os::...::supports_variable_stack_size()
Reviewed-by: kbarrett, simonis, stuefe, coleenp
/*
* Copyright (c) 2014, 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.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* 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 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.hotspot.code;
import sun.hotspot.WhiteBox;
public class CodeBlob {
private static final WhiteBox WB = WhiteBox.getWhiteBox();
public static CodeBlob[] getCodeBlobs(BlobType type) {
Object[] obj = WB.getCodeHeapEntries(type.id);
if (obj == null) {
return null;
}
CodeBlob[] result = new CodeBlob[obj.length];
for (int i = 0, n = result.length; i < n; ++i) {
result[i] = new CodeBlob((Object[]) obj[i]);
}
return result;
}
public static CodeBlob getCodeBlob(long addr) {
Object[] obj = WB.getCodeBlob(addr);
if (obj == null) {
return null;
}
return new CodeBlob(obj);
}
protected CodeBlob(Object[] obj) {
assert obj.length == 3;
name = (String) obj[0];
size = (Integer) obj[1];
code_blob_type = BlobType.values()[(Integer) obj[2]];
assert code_blob_type.id == (Integer) obj[2];
}
public final String name;
public final int size;
public final BlobType code_blob_type;
@Override
public String toString() {
return "CodeBlob{"
+ "name=" + name
+ ", size=" + size
+ ", code_blob_type=" + code_blob_type
+ '}';
}
}