Mercurial > hg > truffle
diff graal/com.oracle.max.criutils/src/com/oracle/max/criutils/BaseProfilingInfo.java @ 5105:95b8a32a7cc3
preparations to avoid endless recompilations because of not updated profiling information
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Mon, 12 Mar 2012 18:40:05 -0700 |
parents | |
children | dad1ac9dba7d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.criutils/src/com/oracle/max/criutils/BaseProfilingInfo.java Mon Mar 12 18:40:05 2012 -0700 @@ -0,0 +1,73 @@ +/* + * 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 com.oracle.max.criutils; + +import com.oracle.max.cri.ri.*; + + +/** + * Dummy profiling information in case that a method was not executed frequently enough so that + * no profiling information does exist yet, or in case that the profiling information should not be used. + */ +public final class BaseProfilingInfo implements RiProfilingInfo { + private static final RiProfilingInfo[] NO_PROFILING_INFO = new RiProfilingInfo[] { + new BaseProfilingInfo(RiExceptionSeen.TRUE), + new BaseProfilingInfo(RiExceptionSeen.FALSE), + new BaseProfilingInfo(RiExceptionSeen.NOT_SUPPORTED) + }; + + private final RiExceptionSeen exceptionSeen; + + BaseProfilingInfo(RiExceptionSeen exceptionSeen) { + this.exceptionSeen = exceptionSeen; + } + + @Override + public RiTypeProfile getTypeProfile(int bci) { + return null; + } + + @Override + public double getBranchTakenProbability(int bci) { + return -1; + } + + @Override + public double[] getSwitchProbabilities(int bci) { + return null; + } + + @Override + public RiExceptionSeen getExceptionSeen(int bci) { + return exceptionSeen; + } + + @Override + public int getExecutionCount(int bci) { + return -1; + } + + public static RiProfilingInfo get(RiExceptionSeen exceptionSeen) { + return NO_PROFILING_INFO[exceptionSeen.ordinal()]; + } +}