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annotate jvmci/jdk.vm.ci.runtime/src/jdk/vm/ci/runtime/services/JVMCICompilerFactory.java @ 23777:6c8eaf47db9a

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added -XX:+JVMCIPrintFlags to support printing of JVMCI flags without having to know how to trigger JVMCI initialization
author Doug Simon <doug.simon@oracle.com>
date Tue, 04 Oct 2016 22:14:32 +0200
parents 3db9e47b477a
children 276858bc6ac6
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1 /*
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package jdk.vm.ci.runtime.services;
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24
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25 import java.io.PrintStream;
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26
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27 import jdk.vm.ci.runtime.JVMCICompiler;
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28 import jdk.vm.ci.runtime.JVMCIRuntime;
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29 import jdk.vm.ci.services.JVMCIPermission;
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30
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31 /**
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32 * Service-provider class for creating JVMCI compilers.
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33 */
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34 public abstract class JVMCICompilerFactory {
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35
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36 private static Void checkPermission() {
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37 SecurityManager sm = System.getSecurityManager();
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38 if (sm != null) {
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39 sm.checkPermission(new JVMCIPermission());
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40 }
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41 return null;
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42 }
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43
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44 @SuppressWarnings("unused")
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45 private JVMCICompilerFactory(Void ignore) {
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46 }
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48 /**
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49 * Initializes a new instance of this class.
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50 *
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51 * @throws SecurityException if a security manager has been installed and it denies
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52 * {@link JVMCIPermission}
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53 */
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54 protected JVMCICompilerFactory() {
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55 this(checkPermission());
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56 }
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57
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58 /**
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59 * Get the name of this compiler. The name is used by JVMCI to determine which factory to use.
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60 */
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61 public abstract String getCompilerName();
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62
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63 /**
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64 * Notifies this object that it has been selected to {@linkplain #createCompiler(JVMCIRuntime)
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65 * create} a compiler and it should now perform any heavy weight initialization that it deferred
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66 * during construction.
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67 */
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68 public void onSelection() {
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69 }
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70
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71 /**
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72 * Create a new instance of a {@link JVMCICompiler}.
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73 */
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74 public abstract JVMCICompiler createCompiler(JVMCIRuntime runtime);
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75
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76 /**
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77 * Prints a help message describing the flags supported by this compiler and how to set them.
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78 *
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79 * @param out where to print the message
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80 */
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81 public void printFlags(PrintStream out) {
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82 }
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83 }