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src/share/vm/services/serviceUtil.hpp@1d7922586cf6 (annotated)
src/share/vm/services/serviceUtil.hpp
Tue, 24 Jul 2012 10:51:00 -0700
- author
- twisti
- date
- Tue, 24 Jul 2012 10:51:00 -0700
- changeset 3969
- 1d7922586cf6
- parent 2314
- f95d63e2154a
- child 4037
- da91efe96a93
- permissions
- -rw-r--r--
7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_SERVICES_SERVICEUTIL_HPP |
| stefank@2314 | 26 | #define SHARE_VM_SERVICES_SERVICEUTIL_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "classfile/systemDictionary.hpp" |
| stefank@2314 | 29 | #include "oops/objArrayOop.hpp" |
| stefank@2314 | 30 | |
| duke@435 | 31 | // |
| duke@435 | 32 | // Serviceability utility functions. |
| duke@435 | 33 | // (Shared by MM and JVMTI). |
| duke@435 | 34 | // |
| duke@435 | 35 | class ServiceUtil : public AllStatic { |
| duke@435 | 36 | public: |
| duke@435 | 37 | |
| duke@435 | 38 | // Return true if oop represents an object that is "visible" |
| duke@435 | 39 | // to the java world. |
| duke@435 | 40 | static inline bool visible_oop(oop o) { |
| duke@435 | 41 | // the sentinel for deleted handles isn't visible |
| duke@435 | 42 | if (o == JNIHandles::deleted_handle()) { |
| duke@435 | 43 | return false; |
| duke@435 | 44 | } |
| duke@435 | 45 | |
| duke@435 | 46 | // ignore KlassKlass |
| duke@435 | 47 | if (o->is_klass()) { |
| duke@435 | 48 | return false; |
| duke@435 | 49 | } |
| duke@435 | 50 | |
| duke@435 | 51 | // instance |
| duke@435 | 52 | if (o->is_instance()) { |
| duke@435 | 53 | // instance objects are visible |
| never@1577 | 54 | if (o->klass() != SystemDictionary::Class_klass()) { |
| duke@435 | 55 | return true; |
| duke@435 | 56 | } |
| duke@435 | 57 | if (java_lang_Class::is_primitive(o)) { |
| duke@435 | 58 | return true; |
| duke@435 | 59 | } |
| duke@435 | 60 | // java.lang.Classes are visible |
| duke@435 | 61 | o = java_lang_Class::as_klassOop(o); |
| duke@435 | 62 | if (o->is_klass()) { |
| duke@435 | 63 | // if it's a class for an object, an object array, or |
| duke@435 | 64 | // primitive (type) array then it's visible. |
| duke@435 | 65 | klassOop klass = (klassOop)o; |
| duke@435 | 66 | if (Klass::cast(klass)->oop_is_instance()) { |
| duke@435 | 67 | return true; |
| duke@435 | 68 | } |
| duke@435 | 69 | if (Klass::cast(klass)->oop_is_objArray()) { |
| duke@435 | 70 | return true; |
| duke@435 | 71 | } |
| duke@435 | 72 | if (Klass::cast(klass)->oop_is_typeArray()) { |
| duke@435 | 73 | return true; |
| duke@435 | 74 | } |
| duke@435 | 75 | } |
| duke@435 | 76 | return false; |
| duke@435 | 77 | } |
| duke@435 | 78 | // object arrays are visible if they aren't system object arrays |
| duke@435 | 79 | if (o->is_objArray()) { |
| duke@435 | 80 | objArrayOop array = (objArrayOop)o; |
| duke@435 | 81 | if (array->klass() != Universe::systemObjArrayKlassObj()) { |
| duke@435 | 82 | return true; |
| duke@435 | 83 | } else { |
| duke@435 | 84 | return false; |
| duke@435 | 85 | } |
| duke@435 | 86 | } |
| duke@435 | 87 | // type arrays are visible |
| duke@435 | 88 | if (o->is_typeArray()) { |
| duke@435 | 89 | return true; |
| duke@435 | 90 | } |
| duke@435 | 91 | // everything else (methodOops, ...) aren't visible |
| duke@435 | 92 | return false; |
| duke@435 | 93 | }; // end of visible_oop() |
| duke@435 | 94 | |
| duke@435 | 95 | }; |
| stefank@2314 | 96 | |
| stefank@2314 | 97 | #endif // SHARE_VM_SERVICES_SERVICEUTIL_HPP |
