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1 /*
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2 * Copyright 2003-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #ifndef _JAVA_JVMTI_MANAGE_CAPABILITIES_H_
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26 #define _JAVA_JVMTI_MANAGE_CAPABILITIES_H_
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27
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28
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29
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30 class JvmtiManageCapabilities : public AllStatic {
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31
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32 private:
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33
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34 // these four capabilities sets represent all potentially
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35 // available capabilities. They are disjoint, covering
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36 // the four cases: (OnLoad vs OnLoad+live phase) X
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37 // (one environment vs any environment).
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38 static jvmtiCapabilities always_capabilities;
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39 static jvmtiCapabilities onload_capabilities;
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40 static jvmtiCapabilities always_solo_capabilities;
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41 static jvmtiCapabilities onload_solo_capabilities;
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42
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43 // solo capabilities that have not been grabbed
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44 static jvmtiCapabilities always_solo_remaining_capabilities;
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45 static jvmtiCapabilities onload_solo_remaining_capabilities;
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46
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47 // all capabilities ever acquired
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48 static jvmtiCapabilities acquired_capabilities;
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49
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50 // basic intenal operations
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51 static jvmtiCapabilities *either(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
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52 static jvmtiCapabilities *both(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
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53 static jvmtiCapabilities *exclude(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
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54 static bool has_some(const jvmtiCapabilities *a);
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55 static void update();
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56
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57 // init functions
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58 static jvmtiCapabilities init_always_capabilities();
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59 static jvmtiCapabilities init_onload_capabilities();
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60 static jvmtiCapabilities init_always_solo_capabilities();
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61 static jvmtiCapabilities init_onload_solo_capabilities();
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62
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63 public:
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64 static void initialize();
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65
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66 // may have to adjust always capabilities when VM initialization has completed
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67 static void recompute_always_capabilities();
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68
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69 // queries and actions
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70 static void get_potential_capabilities(const jvmtiCapabilities *current,
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71 const jvmtiCapabilities *prohibited,
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72 jvmtiCapabilities *result);
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73 static jvmtiError add_capabilities(const jvmtiCapabilities *current,
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74 const jvmtiCapabilities *prohibited,
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75 const jvmtiCapabilities *desired,
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76 jvmtiCapabilities *result);
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77 static void relinquish_capabilities(const jvmtiCapabilities *current,
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78 const jvmtiCapabilities *unwanted,
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79 jvmtiCapabilities *result);
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80 static void copy_capabilities(const jvmtiCapabilities *from, jvmtiCapabilities *to);
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81
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82 #ifndef PRODUCT
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83 static void print(const jvmtiCapabilities* caps);
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84 #endif
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85 };
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86
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87 #endif /* _JAVA_JVMTI_MANAGE_CAPABILITIES_H_ */
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