Mercurial > hg > truffle
view graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/cisc/TemplateNotNeededException.java @ 4150:c78bace5086a
start work on integrating old hooks into mx, work on sanity checks
introduce a DB class to access the bench DB in an easier way (create benchmarks and benchmark values automatically in the DB)
author | Gilles Duboscq <gilles.m.duboscq@gmail.com> |
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date | Tue, 20 Dec 2011 15:34:43 +0100 |
parents | bc8527f3071c |
children |
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/* * Copyright (c) 2007, 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 com.sun.max.asm.gen.cisc; import com.sun.max.asm.dis.*; /** * Thrown to abruptly stop template creation in some corner cases * that would otherwise be hard to describe. * * The {@link Disassembler disassembler} works by matching instruction patterns * against a set of templates. Creation of these templates can be noticeably * sped up by reusing a shared instance of this exception. * A client using the disassembler should {@linkplain #enableSharedInstance() enable} * before creating the first Disassembler object. */ public class TemplateNotNeededException extends Exception { /** * */ private static final long serialVersionUID = 3785941470671918973L; public TemplateNotNeededException() { super(); } public static synchronized void enableSharedInstance() { if (sharedInstance == null) { sharedInstance = new TemplateNotNeededException(); } } public static synchronized void disableSharedInstance() { sharedInstance = null; } public static TemplateNotNeededException raise() throws TemplateNotNeededException { final TemplateNotNeededException instance = sharedInstance; if (instance != null) { throw instance; } throw new TemplateNotNeededException(); } // Checkstyle: stop private static TemplateNotNeededException sharedInstance; }