Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/FieldType.java @ 8790:7f0cb32dd233
8004241: NPG: Metaspace occupies more memory than specified by -XX:MaxMetaspaceSize option
Summary: Enforce MaxMetaspaceSize for both metaspace parts, check MaxMetaspaceSize against "reserved", not "capacity"
Reviewed-by: jmasa, johnc
author | mgerdin |
---|---|
date | Thu, 21 Mar 2013 09:07:43 +0100 |
parents | f6f3bb0ee072 |
children |
line wrap: on
line source
/* * Copyright (c) 2000, 2011, 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.jvm.hotspot.oops; import java.io.*; import sun.jvm.hotspot.runtime.BasicType; import sun.jvm.hotspot.utilities.*; public class FieldType { private Symbol signature; private char first; public FieldType(Symbol signature) { this.signature = signature; this.first = (char) signature.getByteAt(0); if (Assert.ASSERTS_ENABLED) { switch (this.first) { case 'B': case 'C': case 'D': case 'F': case 'I': case 'J': case 'S': case 'Z': case 'L': case '[': break; // Ok. signature char known default: Assert.that(false, "Unknown char in field signature \"" + signature.asString() + "\": " + this.first); } } } public boolean isOop() { return isObject() || isArray(); } public boolean isByte() { return first == 'B'; } public boolean isChar() { return first == 'C'; } public boolean isDouble() { return first == 'D'; } public boolean isFloat() { return first == 'F'; } public boolean isInt() { return first == 'I'; } public boolean isLong() { return first == 'J'; } public boolean isShort() { return first == 'S'; } public boolean isBoolean() { return first == 'Z'; } public boolean isObject() { return first == 'L'; } public boolean isArray() { return first == '['; } public Symbol getSignature() { return signature; } public static class ArrayInfo { private int dimension; private int elementBasicType; // See BasicType.java // FIXME: consider adding name of element class public ArrayInfo(int dimension, int elementBasicType) { this.dimension = dimension; this.elementBasicType = elementBasicType; } public int dimension() { return dimension; } /** See BasicType.java */ public int elementBasicType() { return elementBasicType; } } /** Only valid for T_ARRAY; throws unspecified exception otherwise */ public ArrayInfo getArrayInfo() { int index = 1; int dim = 1; index = skipOptionalSize(signature, index); while (signature.getByteAt(index) == '[') { index++; dim++; skipOptionalSize(signature, index); } int elementType = BasicType.charToType((char) signature.getByteAt(index)); return new ArrayInfo(dim, elementType); } private int skipOptionalSize(Symbol sig, int index) { byte c = sig.getByteAt(index); while (c >= '0' && c <= '9') { ++index; c = sig.getByteAt(index); } return index; } }