1 /* 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.debug; 24 25 import org.graalvm.compiler.debug.internal.DebugScope; 26 27 /** 28 * A utility for scoping a change to the current debug {@linkplain DebugScope#setConfig(DebugConfig) 29 * configuration}. For example: 30 * 31 * <pre> 32 * DebugConfig config = ...; 33 * try (DebugConfigScope s = new DebugConfigScope(config)) { 34 * // ... 35 * } 36 * </pre> 37 */ 38 public class DebugConfigScope implements AutoCloseable { 39 40 private final DebugConfig current; 41 42 /** 43 * Sets the current debug {@linkplain DebugScope#setConfig(DebugConfig) configuration} to a 44 * given value and creates an object that when {@linkplain #close() closed} resets the 45 * configuration to the {@linkplain DebugScope#getConfig() current} configuration. 46 */ 47 public DebugConfigScope(DebugConfig config) { 48 this.current = DebugScope.getConfig(); 49 DebugScope.getInstance().setConfig(config); 50 } 51 52 @Override 53 public void close() { 54 DebugScope.getInstance().setConfig(current); 55 } 56 }