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annotate jvmci/jdk.vm.ci.runtime/src/jdk/vm/ci/runtime/services/JVMCICompilerFactory.java @ 23363:56479400913e

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jdk.vm.ci needs to securely export services (JDK-8155023)
author Doug Simon <doug.simon@oracle.com>
date Thu, 28 Apr 2016 15:16:47 +0200
parents jvmci/jdk.vm.ci.runtime/src/jdk/vm/ci/runtime/JVMCICompilerFactory.java@7eaa740eaca2
children 8153a654bd10
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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 jdk.vm.ci.runtime.JVMCICompiler;
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26 import jdk.vm.ci.runtime.JVMCIRuntime;
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27
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28 /**
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29 * Service-provider class for creating JVMCI compilers.
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30 */
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31 public abstract class JVMCICompilerFactory {
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32
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33 private static Void checkPermission() {
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34 SecurityManager sm = System.getSecurityManager();
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35 if (sm != null)
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36 sm.checkPermission(new RuntimePermission("jvmci"));
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37 return null;
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38 }
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39
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40 @SuppressWarnings("unused")
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41 private JVMCICompilerFactory(Void ignore) {
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42 }
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43
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44 /**
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45 * Initializes a new instance of this class.
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46 *
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47 * @throws SecurityException if a security manager has been installed and it denies
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48 * {@code RuntimePermission("jvmci")}
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49 */
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50 protected JVMCICompilerFactory() {
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51 this(checkPermission());
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52 }
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53
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54 /**
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55 * Get the name of this compiler. The name is used by JVMCI to determine which factory to use.
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56 */
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57 public abstract String getCompilerName();
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58
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59 /**
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60 * Notifies this object that it has been selected to {@linkplain #createCompiler(JVMCIRuntime)
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61 * create} a compiler and it should now perform any heavy weight initialization that it deferred
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62 * during construction.
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63 */
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64 public void onSelection() {
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65 }
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66
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67 /**
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68 * Create a new instance of a {@link JVMCICompiler}.
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69 */
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70 public abstract JVMCICompiler createCompiler(JVMCIRuntime runtime);
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71
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72 /**
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73 * In a tiered system it might be advantageous for startup to keep the JVMCI compiler from
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74 * compiling itself so provide a hook to request that certain packages are compiled only by an
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75 * optimizing first tier. The prefixes should class or package names using / as the separator,
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76 * i.e. jdk/vm/ci for instance.
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77 *
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78 * @return 0 or more Strings identifying packages that should by compiled by the first tier
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79 * only.
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80 */
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81 public String[] getTrivialPrefixes() {
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82 return null;
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83 }
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84 }