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src/share/vm/oops/klass.inline.hpp@5832cdaf89c6 (annotated)
src/share/vm/oops/klass.inline.hpp
Mon, 16 Dec 2013 08:24:33 -0500
- author
- hseigel
- date
- Mon, 16 Dec 2013 08:24:33 -0500
- changeset 6195
- 5832cdaf89c6
- parent 5528
- 740e263c80c6
- child 6680
- 78bbf4d43a14
- permissions
- -rw-r--r--
8027804: JCK resolveMethod test fails expecting AbstractMethodError
Summary: Create AME overpass methods and fix method search logic
Reviewed-by: kamg, acorn, lfoltan, coleenp
| duke@435 | 1 | /* |
| hseigel@5528 | 2 | * Copyright (c) 2005, 2013, 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_OOPS_KLASS_INLINE_HPP |
| stefank@2314 | 26 | #define SHARE_VM_OOPS_KLASS_INLINE_HPP |
| stefank@2314 | 27 | |
| hseigel@5528 | 28 | #include "memory/universe.hpp" |
| stefank@2314 | 29 | #include "oops/klass.hpp" |
| stefank@2314 | 30 | #include "oops/markOop.hpp" |
| stefank@2314 | 31 | |
| duke@435 | 32 | inline void Klass::set_prototype_header(markOop header) { |
| duke@435 | 33 | assert(!header->has_bias_pattern() || oop_is_instance(), "biased locking currently only supported for Java instances"); |
| duke@435 | 34 | _prototype_header = header; |
| duke@435 | 35 | } |
| stefank@2314 | 36 | |
| hseigel@5528 | 37 | inline bool Klass::is_null(Klass* obj) { return obj == NULL; } |
| hseigel@5528 | 38 | inline bool Klass::is_null(narrowKlass obj) { return obj == 0; } |
| hseigel@5528 | 39 | |
| hseigel@5528 | 40 | // Encoding and decoding for klass field. |
| hseigel@5528 | 41 | |
| hseigel@5528 | 42 | inline bool check_klass_alignment(Klass* obj) { |
| hseigel@5528 | 43 | return (intptr_t)obj % KlassAlignmentInBytes == 0; |
| hseigel@5528 | 44 | } |
| hseigel@5528 | 45 | |
| hseigel@5528 | 46 | inline narrowKlass Klass::encode_klass_not_null(Klass* v) { |
| hseigel@5528 | 47 | assert(!is_null(v), "klass value can never be zero"); |
| hseigel@5528 | 48 | assert(check_klass_alignment(v), "Address not aligned"); |
| hseigel@5528 | 49 | int shift = Universe::narrow_klass_shift(); |
| hseigel@5528 | 50 | uint64_t pd = (uint64_t)(pointer_delta((void*)v, Universe::narrow_klass_base(), 1)); |
| hseigel@5528 | 51 | assert(KlassEncodingMetaspaceMax > pd, "change encoding max if new encoding"); |
| hseigel@5528 | 52 | uint64_t result = pd >> shift; |
| hseigel@5528 | 53 | assert((result & CONST64(0xffffffff00000000)) == 0, "narrow klass pointer overflow"); |
| hseigel@5528 | 54 | assert(decode_klass(result) == v, "reversibility"); |
| hseigel@5528 | 55 | return (narrowKlass)result; |
| hseigel@5528 | 56 | } |
| hseigel@5528 | 57 | |
| hseigel@5528 | 58 | inline narrowKlass Klass::encode_klass(Klass* v) { |
| hseigel@5528 | 59 | return is_null(v) ? (narrowKlass)0 : encode_klass_not_null(v); |
| hseigel@5528 | 60 | } |
| hseigel@5528 | 61 | |
| hseigel@5528 | 62 | inline Klass* Klass::decode_klass_not_null(narrowKlass v) { |
| hseigel@5528 | 63 | assert(!is_null(v), "narrow klass value can never be zero"); |
| hseigel@5528 | 64 | int shift = Universe::narrow_klass_shift(); |
| hseigel@5528 | 65 | Klass* result = (Klass*)(void*)((uintptr_t)Universe::narrow_klass_base() + ((uintptr_t)v << shift)); |
| hseigel@5528 | 66 | assert(check_klass_alignment(result), err_msg("address not aligned: " PTR_FORMAT, (void*) result)); |
| hseigel@5528 | 67 | return result; |
| hseigel@5528 | 68 | } |
| hseigel@5528 | 69 | |
| hseigel@5528 | 70 | inline Klass* Klass::decode_klass(narrowKlass v) { |
| hseigel@5528 | 71 | return is_null(v) ? (Klass*)NULL : decode_klass_not_null(v); |
| hseigel@5528 | 72 | } |
| hseigel@5528 | 73 | |
| stefank@2314 | 74 | #endif // SHARE_VM_OOPS_KLASS_INLINE_HPP |
