| /* |
| * Copyright (c) 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 jdk.vm.ci.meta; |
| |
| /** |
| * An implementation of {@link ProfilingInfo} that can used in the absence of real profile |
| * information. |
| */ |
| public final class DefaultProfilingInfo implements ProfilingInfo { |
| |
| private static final ProfilingInfo[] NO_PROFILING_INFO = new ProfilingInfo[]{new DefaultProfilingInfo(TriState.TRUE), new DefaultProfilingInfo(TriState.FALSE), |
| new DefaultProfilingInfo(TriState.UNKNOWN)}; |
| |
| private final TriState exceptionSeen; |
| |
| DefaultProfilingInfo(TriState exceptionSeen) { |
| this.exceptionSeen = exceptionSeen; |
| } |
| |
| @Override |
| public int getCodeSize() { |
| return 0; |
| } |
| |
| @Override |
| public JavaTypeProfile getTypeProfile(int bci) { |
| return null; |
| } |
| |
| @Override |
| public JavaMethodProfile getMethodProfile(int bci) { |
| return null; |
| } |
| |
| @Override |
| public double getBranchTakenProbability(int bci) { |
| return -1; |
| } |
| |
| @Override |
| public double[] getSwitchProbabilities(int bci) { |
| return null; |
| } |
| |
| @Override |
| public TriState getExceptionSeen(int bci) { |
| return exceptionSeen; |
| } |
| |
| @Override |
| public TriState getNullSeen(int bci) { |
| return TriState.UNKNOWN; |
| } |
| |
| @Override |
| public int getExecutionCount(int bci) { |
| return -1; |
| } |
| |
| public static ProfilingInfo get(TriState exceptionSeen) { |
| return NO_PROFILING_INFO[exceptionSeen.ordinal()]; |
| } |
| |
| @Override |
| public int getDeoptimizationCount(DeoptimizationReason reason) { |
| return 0; |
| } |
| |
| @Override |
| public boolean isMature() { |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return "DefaultProfilingInfo<" + this.toString(null, "; ") + ">"; |
| } |
| |
| public void setMature() { |
| // Do nothing |
| } |
| |
| public boolean setCompilerIRSize(Class<?> irType, int nodeCount) { |
| return false; |
| } |
| |
| public int getCompilerIRSize(Class<?> irType) { |
| return -1; |
| } |
| } |