1 /* 2 * Copyright (c) 2014, 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 jdk.vm.ci.hotspot.events; 24 25 import jdk.vm.ci.common.JVMCIError; 26 27 /** 28 * An empty implementation for {@link EventProvider}. This implementation is used when no logging is 29 * requested. 30 */ 31 public final class EmptyEventProvider implements EventProvider { 32 33 public CompilationEvent newCompilationEvent() { 34 return new EmptyCompilationEvent(); 35 } 36 37 public static class EmptyCompilationEvent implements CompilationEvent { 38 public void commit() { 39 throw JVMCIError.shouldNotReachHere(); 40 } 41 42 public boolean shouldWrite() { 43 // Events of this class should never been written. 44 return false; 45 } 46 47 public void begin() { 48 } 49 50 public void end() { 51 } 52 53 public void setMethod(String method) { 54 throw JVMCIError.shouldNotReachHere(); 55 } 56 57 public void setCompileId(int compileId) { 58 throw JVMCIError.shouldNotReachHere(); 59 } 60 61 public void setCompileLevel(int compileLevel) { 62 throw JVMCIError.shouldNotReachHere(); 63 } 64 65 public void setSucceeded(boolean succeeded) { 66 throw JVMCIError.shouldNotReachHere(); 67 } 68 69 public void setIsOsr(boolean isOsr) { 70 throw JVMCIError.shouldNotReachHere(); 71 } 72 73 public void setCodeSize(int codeSize) { 74 throw JVMCIError.shouldNotReachHere(); 75 } 76 77 public void setInlinedBytes(int inlinedBytes) { 78 throw JVMCIError.shouldNotReachHere(); 79 } 80 } 81 82 public CompilerFailureEvent newCompilerFailureEvent() { 83 return new EmptyCompilerFailureEvent(); 84 } 85 86 public static class EmptyCompilerFailureEvent implements CompilerFailureEvent { 87 public void commit() { 88 throw JVMCIError.shouldNotReachHere(); 89 } 90 91 public boolean shouldWrite() { 92 // Events of this class should never been written. 93 return false; 94 } 95 96 public void setCompileId(int compileId) { 97 throw JVMCIError.shouldNotReachHere(); 98 } 99 100 public void setMessage(String message) { 101 throw JVMCIError.shouldNotReachHere(); 102 } 103 } 104 105 }