1 /* 2 * Copyright (c) 2016, 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; 24 25 import jdk.vm.ci.runtime.JVMCICompilerFactory; 26 27 /** 28 * HotSpot extensions to {@link JVMCICompilerFactory}. 29 */ 30 public abstract class HotSpotJVMCICompilerFactory implements JVMCICompilerFactory { 31 32 /** 33 * Gets 0 or more prefixes identifying classes that should by compiled by C1 in simple mode 34 * (i.e., {@code CompLevel_simple}) when HotSpot is running with tiered compilation. The 35 * prefixes should be class or package names using "/" as the separator, e.g. "jdk/vm/ci". 36 * 37 * @return 0 or more Strings identifying packages that should by compiled by the first tier only 38 * or null if no redirection to C1 should be performed. 39 */ 40 public String[] getTrivialPrefixes() { 41 return null; 42 } 43 44 public enum CompilationLevelAdjustment { 45 /** 46 * No adjustment. 47 */ 48 None, 49 50 /** 51 * Adjust based on declaring class of method. 52 */ 53 ByHolder, 54 55 /** 56 * Adjust based on declaring class, name and signature of method. 57 */ 58 ByFullSignature 59 } 60 61 /** 62 * Determines if this object may want to adjust the compilation level for a method that is being 63 * scheduled by the VM for compilation. 64 */ 65 public CompilationLevelAdjustment getCompilationLevelAdjustment() { 66 return CompilationLevelAdjustment.None; 67 } 68 69 public enum CompilationLevel { 70 None, 71 Simple, 72 LimitedProfile, 73 FullProfile, 74 FullOptimization 75 } 76 77 /** 78 * Potentially modifies the compilation level currently selected by the VM compilation policy 79 * for a method. 80 * 81 * @param declaringClass the class in which the method is declared 82 * @param name the name of the method or {@code null} depending on the value that was returned 83 * by {@link #getCompilationLevelAdjustment()} 84 * @param signature the signature of the method or {@code null} depending on the value that was 85 * returned by {@link #getCompilationLevelAdjustment()} 86 * @param isOsr specifies if the compilation being scheduled in an OSR compilation 87 * @param level the compilation level currently selected by the VM compilation policy 88 * @return the compilation level to use for the compilation being scheduled (must be a valid 89 * {@code CompLevel} enum value) 90 */ 91 public CompilationLevel adjustCompilationLevel(Class<?> declaringClass, String name, String signature, boolean isOsr, CompilationLevel level) { 92 throw new InternalError("Should not reach here"); 93 } 94 }