Mercurial > hg > truffle
annotate src/share/vm/services/serviceUtil.hpp @ 4181:319860ae697a
Simplify FrameMap: make offsets of spill slots and outgoing parameters independent so that they can be allocated at the same time, eliminating the separate phases. This makes the separate StackBlock unnecesary. Change CiStackSlot to use byte offsets instead of spill slot index. This makes CiTarget.spillSlotSize unnecessary.
| author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
|---|---|
| date | Mon, 02 Jan 2012 14:16:08 -0800 |
| parents | f95d63e2154a |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_SERVICES_SERVICEUTIL_HPP |
| 26 #define SHARE_VM_SERVICES_SERVICEUTIL_HPP | |
| 27 | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "oops/objArrayOop.hpp" | |
| 30 | |
| 0 | 31 // |
| 32 // Serviceability utility functions. | |
| 33 // (Shared by MM and JVMTI). | |
| 34 // | |
| 35 class ServiceUtil : public AllStatic { | |
| 36 public: | |
| 37 | |
| 38 // Return true if oop represents an object that is "visible" | |
| 39 // to the java world. | |
| 40 static inline bool visible_oop(oop o) { | |
| 41 // the sentinel for deleted handles isn't visible | |
| 42 if (o == JNIHandles::deleted_handle()) { | |
| 43 return false; | |
| 44 } | |
| 45 | |
| 46 // ignore KlassKlass | |
| 47 if (o->is_klass()) { | |
| 48 return false; | |
| 49 } | |
| 50 | |
| 51 // instance | |
| 52 if (o->is_instance()) { | |
| 53 // instance objects are visible | |
| 1142 | 54 if (o->klass() != SystemDictionary::Class_klass()) { |
| 0 | 55 return true; |
| 56 } | |
| 57 if (java_lang_Class::is_primitive(o)) { | |
| 58 return true; | |
| 59 } | |
| 60 // java.lang.Classes are visible | |
| 61 o = java_lang_Class::as_klassOop(o); | |
| 62 if (o->is_klass()) { | |
| 63 // if it's a class for an object, an object array, or | |
| 64 // primitive (type) array then it's visible. | |
| 65 klassOop klass = (klassOop)o; | |
| 66 if (Klass::cast(klass)->oop_is_instance()) { | |
| 67 return true; | |
| 68 } | |
| 69 if (Klass::cast(klass)->oop_is_objArray()) { | |
| 70 return true; | |
| 71 } | |
| 72 if (Klass::cast(klass)->oop_is_typeArray()) { | |
| 73 return true; | |
| 74 } | |
| 75 } | |
| 76 return false; | |
| 77 } | |
| 78 // object arrays are visible if they aren't system object arrays | |
| 79 if (o->is_objArray()) { | |
| 80 objArrayOop array = (objArrayOop)o; | |
| 81 if (array->klass() != Universe::systemObjArrayKlassObj()) { | |
| 82 return true; | |
| 83 } else { | |
| 84 return false; | |
| 85 } | |
| 86 } | |
| 87 // type arrays are visible | |
| 88 if (o->is_typeArray()) { | |
| 89 return true; | |
| 90 } | |
| 91 // everything else (methodOops, ...) aren't visible | |
| 92 return false; | |
| 93 }; // end of visible_oop() | |
| 94 | |
| 95 }; | |
| 1972 | 96 |
| 97 #endif // SHARE_VM_SERVICES_SERVICEUTIL_HPP |