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