Mercurial > hg > graal-jvmci-8
diff jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/services/HotSpotJVMCICompilerFactory.java @ 23379:24505bf61633
allow JVMCI compiler to change the compilation policy for a method (JDK-8152311)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 09 May 2016 16:08:16 +0200 |
parents | |
children | b5557b757040 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/services/HotSpotJVMCICompilerFactory.java Mon May 09 16:08:16 2016 +0200 @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2016, 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.hotspot.services; + +import jdk.vm.ci.hotspot.HotSpotVMConfig; +import jdk.vm.ci.runtime.services.JVMCICompilerFactory; + +/** + * HotSpot extensions to {@link JVMCICompilerFactory}. + */ +public abstract class HotSpotJVMCICompilerFactory extends JVMCICompilerFactory { + + /** + * Gets 0 or more prefixes identifying classes that should by compiled by C1 in simple mode + * (i.e., {@code CompLevel_simple}) when HotSpot is running with tiered compilation. The + * prefixes should be class or package names using "/" as the separator, e.g. "jdk/vm/ci". + * + * @return 0 or more Strings identifying packages that should by compiled by the first tier only + * or null if no redirection to C1 should be performed. + */ + public String[] getTrivialPrefixes() { + return null; + } + + /** + * Determines if this object may want to adjust the compilation level for a method that is being + * scheduled by the VM for compilation. The legal return values and their meanings are: + * <ul> + * <li>0 - no adjustment</li> + * <li>1 - adjust based on declaring class of method</li> + * <li>2 - adjust based on declaring class, name and signature of method</li> + * </ul> + */ + public int getCompilationLevelAdjustment(HotSpotVMConfig config) { + return config.compLevelAdjustmentNone; + } + + /** + * Potentially modifies the compilation level currently selected by the VM compilation policy + * for a method. + * + * @param config object for reading HotSpot {@code CompLevel} enum values + * @param declaringClass the class in which the method is declared + * @param name the name of the method or {@code null} depending on the value that was returned + * by {@link #getCompilationLevelAdjustment(HotSpotVMConfig)} + * @param signature the signature of the method or {@code null} depending on the value that was + * returned by {@link #getCompilationLevelAdjustment(HotSpotVMConfig)} + * @param isOsr specifies if the compilation being scheduled in an OSR compilation + * @param level the compilation level currently selected by the VM compilation policy + * @return the compilation level to use for the compilation being scheduled (must be a valid + * {@code CompLevel} enum value) + */ + public int adjustCompilationLevel(HotSpotVMConfig config, Class<?> declaringClass, String name, String signature, boolean isOsr, int level) { + throw new InternalError("Should not reach here"); + } +}