Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/code/DebugInfoReadStream.java @ 18665:96861e3f8cc5
made CFGPrinterObserver reset (upon close) properly
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 11 Dec 2014 22:14:30 +0100 |
parents | da91efe96a93 |
children |
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/* * Copyright (c) 2000, 2012, 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.code; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.VM; import sun.jvm.hotspot.utilities.*; import sun.jvm.hotspot.oops.Method; public class DebugInfoReadStream extends CompressedReadStream { private NMethod code; private int InvocationEntryBCI; private List objectPool; // ArrayList<ObjectValue> public DebugInfoReadStream(NMethod code, int offset) { super(code.scopesDataBegin(), offset); InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); this.code = code; this.objectPool = null; } public DebugInfoReadStream(NMethod code, int offset, List objectPool) { super(code.scopesDataBegin(), offset); InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); this.code = code; this.objectPool = objectPool; } public OopHandle readOopHandle() { return code.getOopAt(readInt()); } public Method readMethod() { return code.getMethodAt(readInt()); } ScopeValue readObjectValue() { int id = readInt(); if (Assert.ASSERTS_ENABLED) { Assert.that(objectPool != null, "object pool does not exist"); for (Iterator itr = objectPool.iterator(); itr.hasNext();) { ObjectValue ov = (ObjectValue) itr.next(); Assert.that(ov.id() != id, "should not be read twice"); } } ObjectValue result = new ObjectValue(id); // Cache the object since an object field could reference it. objectPool.add(result); result.readObject(this); return result; } ScopeValue getCachedObject() { int id = readInt(); Assert.that(objectPool != null, "object pool does not exist"); for (Iterator itr = objectPool.iterator(); itr.hasNext();) { ObjectValue ov = (ObjectValue) itr.next(); if (ov.id() == id) { return ov; } } Assert.that(false, "should not reach here"); return null; } public int readBCI() { return readInt() + InvocationEntryBCI; } }