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 /** 26 * A counter for some value of interest. 27 */ 28 public interface DebugCounter { 29 30 /** 31 * Adds 1 to this counter if counting is {@link Debug#isCountEnabled() enabled} or this is an 32 * {@linkplain #isConditional() unconditional} counter. 33 */ 34 void increment(); 35 36 /** 37 * Adds {@code value} to this counter if counting is {@link Debug#isCountEnabled() enabled} or 38 * this is an {@linkplain #isConditional() unconditional} counter. 39 */ 40 void add(long value); 41 42 /** 43 * Sets a flag determining if this counter is only enabled if counting is 44 * {@link Debug#isCountEnabled() enabled}. 45 */ 46 void setConditional(boolean flag); 47 48 /** 49 * Determines if this counter is only enabled if counting is {@link Debug#isCountEnabled() 50 * enabled}. 51 */ 52 boolean isConditional(); 53 54 /** 55 * Gets the current value of this counter. 56 */ 57 long getCurrentValue(); 58 59 /** 60 * Determines if this counter is enabled (either conditionally or unconditionally). 61 */ 62 default boolean isEnabled() { 63 return !isConditional() || Debug.isCountEnabled(); 64 } 65 }