Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/runtime/monitorChunk.hpp@710a3c8b516e (annotated)
src/share/vm/runtime/monitorChunk.hpp
Tue, 08 Aug 2017 15:57:29 +0800
- author
- aoqi
- date
- Tue, 08 Aug 2017 15:57:29 +0800
- changeset 6876
- 710a3c8b516e
- parent 4153
- b9a9ed0f8eeb
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_RUNTIME_MONITORCHUNK_HPP |
| aoqi@0 | 26 | #define SHARE_VM_RUNTIME_MONITORCHUNK_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "runtime/synchronizer.hpp" |
| aoqi@0 | 29 | |
| aoqi@0 | 30 | // Data structure for holding monitors for one activation during |
| aoqi@0 | 31 | // deoptimization. |
| aoqi@0 | 32 | |
| aoqi@0 | 33 | class MonitorChunk: public CHeapObj<mtInternal> { |
| aoqi@0 | 34 | private: |
| aoqi@0 | 35 | int _number_of_monitors; |
| aoqi@0 | 36 | BasicObjectLock* _monitors; |
| aoqi@0 | 37 | BasicObjectLock* monitors() const { return _monitors; } |
| aoqi@0 | 38 | MonitorChunk* _next; |
| aoqi@0 | 39 | public: |
| aoqi@0 | 40 | // Constructor |
| aoqi@0 | 41 | MonitorChunk(int number_on_monitors); |
| aoqi@0 | 42 | ~MonitorChunk(); |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | // link operations |
| aoqi@0 | 45 | MonitorChunk* next() const { return _next; } |
| aoqi@0 | 46 | void set_next(MonitorChunk* next) { _next = next; } |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | // Tells whether the monitor chunk is linked into the JavaThread |
| aoqi@0 | 49 | bool is_linked() const { return next() != NULL; } |
| aoqi@0 | 50 | |
| aoqi@0 | 51 | // Returns the number of monitors |
| aoqi@0 | 52 | int number_of_monitors() const { return _number_of_monitors; } |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | // Returns the index'th monitor |
| aoqi@0 | 55 | BasicObjectLock* at(int index) { assert(index >= 0 && index < number_of_monitors(), "out of bounds check"); return &monitors()[index]; } |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | |
| aoqi@0 | 58 | // Memory management |
| aoqi@0 | 59 | void oops_do(OopClosure* f); |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | // Tells whether the addr point into the monitors. |
| aoqi@0 | 62 | bool contains(void* addr) const { return (addr >= (void*) monitors()) && (addr < (void*) (monitors() + number_of_monitors())); } |
| aoqi@0 | 63 | }; |
| aoqi@0 | 64 | |
| aoqi@0 | 65 | #endif // SHARE_VM_RUNTIME_MONITORCHUNK_HPP |
