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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/services/HotSpotVMEventListener.java @ 23364:8153a654bd10

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checkstyle fixes
author Doug Simon <doug.simon@oracle.com>
date Fri, 29 Apr 2016 00:36:35 +0200
parents 56479400913e
children cd8fd4cced6c
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1 /*
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2 * Copyright (c) 2015, 2016, 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.hotspot.services;
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24
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25 import jdk.vm.ci.code.CompiledCode;
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26 import jdk.vm.ci.code.InstalledCode;
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27 import jdk.vm.ci.hotspot.HotSpotCodeCacheProvider;
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28 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
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29 import jdk.vm.ci.meta.JVMCIMetaAccessContext;
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30 import jdk.vm.ci.meta.ResolvedJavaType;
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31
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32 /**
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33 * Service-provider class for responding to VM events and for creating
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34 * {@link JVMCIMetaAccessContext}s.
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35 */
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36 public abstract class HotSpotVMEventListener {
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37
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38 private static Void checkPermission() {
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39 SecurityManager sm = System.getSecurityManager();
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40 if (sm != null) {
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41 sm.checkPermission(new RuntimePermission("jvmci"));
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42 }
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43 return null;
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44 }
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45
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46 @SuppressWarnings("unused")
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47 HotSpotVMEventListener(Void ignore) {
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48 }
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49
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50 /**
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51 * Initializes a new instance of this class.
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52 *
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53 * @throws SecurityException if a security manager has been installed and it denies
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54 * {@code RuntimePermission("jvmci")}
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55 */
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56 protected HotSpotVMEventListener() {
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57 this(checkPermission());
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58 }
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59
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60 /**
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61 * Notifies this client that the VM is shutting down.
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62 */
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63 public void notifyShutdown() {
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64 }
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66 /**
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67 * Notify on successful install into the code cache.
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68 *
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69 * @param hotSpotCodeCacheProvider
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70 * @param installedCode
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71 * @param compiledCode
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72 */
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73 public void notifyInstall(HotSpotCodeCacheProvider hotSpotCodeCacheProvider, InstalledCode installedCode, CompiledCode compiledCode) {
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74 }
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75
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76 /**
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77 * Create a custom {@link JVMCIMetaAccessContext} to be used for managing the lifetime of loaded
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78 * metadata. It a custom one isn't created then the default implementation will be a single
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79 * context with globally shared instances of {@link ResolvedJavaType} that are never released.
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80 *
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81 * @param runtime the runtime instance that will use the returned context
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82 * @return a custom context or null
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83 */
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84 public JVMCIMetaAccessContext createMetaAccessContext(HotSpotJVMCIRuntime runtime) {
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85 return null;
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86 }
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87 }