Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/utilities/preserveException.hpp@2d8a650513c2 (annotated)
src/share/vm/utilities/preserveException.hpp
Fri, 29 Apr 2016 00:06:10 +0800
- author
- aoqi
- date
- Fri, 29 Apr 2016 00:06:10 +0800
- changeset 1
- 2d8a650513c2
- parent 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Added MIPS 64-bit port.
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1998, 2010, 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_UTILITIES_PRESERVEEXCEPTION_HPP |
| aoqi@0 | 26 | #define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "runtime/handles.hpp" |
| aoqi@0 | 29 | #include "runtime/thread.inline.hpp" |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | // This file provides more support for exception handling; see also exceptions.hpp |
| aoqi@0 | 32 | class PreserveExceptionMark { |
| aoqi@0 | 33 | private: |
| aoqi@0 | 34 | Thread* _thread; |
| aoqi@0 | 35 | Handle _preserved_exception_oop; |
| aoqi@0 | 36 | int _preserved_exception_line; |
| aoqi@0 | 37 | const char* _preserved_exception_file; |
| aoqi@0 | 38 | |
| aoqi@0 | 39 | public: |
| aoqi@0 | 40 | PreserveExceptionMark(Thread*& thread); |
| aoqi@0 | 41 | ~PreserveExceptionMark(); |
| aoqi@0 | 42 | }; |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | |
| aoqi@0 | 45 | // This is a clone of PreserveExceptionMark which asserts instead |
| aoqi@0 | 46 | // of failing when what it wraps generates a pending exception. |
| aoqi@0 | 47 | // It also addresses bug 6431341. |
| aoqi@0 | 48 | class CautiouslyPreserveExceptionMark { |
| aoqi@0 | 49 | private: |
| aoqi@0 | 50 | Thread* _thread; |
| aoqi@0 | 51 | Handle _preserved_exception_oop; |
| aoqi@0 | 52 | int _preserved_exception_line; |
| aoqi@0 | 53 | const char* _preserved_exception_file; |
| aoqi@0 | 54 | |
| aoqi@0 | 55 | public: |
| aoqi@0 | 56 | CautiouslyPreserveExceptionMark(Thread* thread); |
| aoqi@0 | 57 | ~CautiouslyPreserveExceptionMark(); |
| aoqi@0 | 58 | }; |
| aoqi@0 | 59 | |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | // Like PreserveExceptionMark but allows new exceptions to be generated in |
| aoqi@0 | 62 | // the body of the mark. If a new exception is generated then the original one |
| aoqi@0 | 63 | // is discarded. |
| aoqi@0 | 64 | class WeakPreserveExceptionMark { |
| aoqi@0 | 65 | private: |
| aoqi@0 | 66 | Thread* _thread; |
| aoqi@0 | 67 | Handle _preserved_exception_oop; |
| aoqi@0 | 68 | int _preserved_exception_line; |
| aoqi@0 | 69 | const char* _preserved_exception_file; |
| aoqi@0 | 70 | |
| aoqi@0 | 71 | void preserve(); |
| aoqi@0 | 72 | void restore(); |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | public: |
| aoqi@0 | 75 | WeakPreserveExceptionMark(Thread* pThread) : _thread(pThread), _preserved_exception_oop() { |
| aoqi@0 | 76 | if (pThread->has_pending_exception()) { |
| aoqi@0 | 77 | preserve(); |
| aoqi@0 | 78 | } |
| aoqi@0 | 79 | } |
| aoqi@0 | 80 | ~WeakPreserveExceptionMark() { |
| aoqi@0 | 81 | if (_preserved_exception_oop.not_null()) { |
| aoqi@0 | 82 | restore(); |
| aoqi@0 | 83 | } |
| aoqi@0 | 84 | } |
| aoqi@0 | 85 | }; |
| aoqi@0 | 86 | |
| aoqi@0 | 87 | |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | // use global exception mark when allowing pending exception to be set and |
| aoqi@0 | 90 | // saving and restoring them |
| aoqi@0 | 91 | #define PRESERVE_EXCEPTION_MARK Thread* THREAD; PreserveExceptionMark __em(THREAD); |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | #endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP |
