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comparison: src/share/vm/utilities/preserveException.hpp
src/share/vm/utilities/preserveException.hpp
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| 1 /* | |
| 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP | |
| 26 #define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP | |
| 27 | |
| 28 #include "runtime/handles.hpp" | |
| 29 #include "runtime/thread.inline.hpp" | |
| 30 | |
| 31 // This file provides more support for exception handling; see also exceptions.hpp | |
| 32 class PreserveExceptionMark { | |
| 33 private: | |
| 34 Thread* _thread; | |
| 35 Handle _preserved_exception_oop; | |
| 36 int _preserved_exception_line; | |
| 37 const char* _preserved_exception_file; | |
| 38 | |
| 39 public: | |
| 40 PreserveExceptionMark(Thread*& thread); | |
| 41 ~PreserveExceptionMark(); | |
| 42 }; | |
| 43 | |
| 44 | |
| 45 // This is a clone of PreserveExceptionMark which asserts instead | |
| 46 // of failing when what it wraps generates a pending exception. | |
| 47 // It also addresses bug 6431341. | |
| 48 class CautiouslyPreserveExceptionMark { | |
| 49 private: | |
| 50 Thread* _thread; | |
| 51 Handle _preserved_exception_oop; | |
| 52 int _preserved_exception_line; | |
| 53 const char* _preserved_exception_file; | |
| 54 | |
| 55 public: | |
| 56 CautiouslyPreserveExceptionMark(Thread* thread); | |
| 57 ~CautiouslyPreserveExceptionMark(); | |
| 58 }; | |
| 59 | |
| 60 | |
| 61 // Like PreserveExceptionMark but allows new exceptions to be generated in | |
| 62 // the body of the mark. If a new exception is generated then the original one | |
| 63 // is discarded. | |
| 64 class WeakPreserveExceptionMark { | |
| 65 private: | |
| 66 Thread* _thread; | |
| 67 Handle _preserved_exception_oop; | |
| 68 int _preserved_exception_line; | |
| 69 const char* _preserved_exception_file; | |
| 70 | |
| 71 void preserve(); | |
| 72 void restore(); | |
| 73 | |
| 74 public: | |
| 75 WeakPreserveExceptionMark(Thread* pThread) : _thread(pThread), _preserved_exception_oop() { | |
| 76 if (pThread->has_pending_exception()) { | |
| 77 preserve(); | |
| 78 } | |
| 79 } | |
| 80 ~WeakPreserveExceptionMark() { | |
| 81 if (_preserved_exception_oop.not_null()) { | |
| 82 restore(); | |
| 83 } | |
| 84 } | |
| 85 }; | |
| 86 | |
| 87 | |
| 88 | |
| 89 // use global exception mark when allowing pending exception to be set and | |
| 90 // saving and restoring them | |
| 91 #define PRESERVE_EXCEPTION_MARK Thread* THREAD; PreserveExceptionMark __em(THREAD); | |
| 92 | |
| 93 #endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP |
