Mercurial > hg > truffle
annotate src/share/vm/utilities/preserveException.hpp @ 2428:5134fa1cfe63
7029036: Card-table verification hangs with all framework collectors, except G1, even before the first GC
Summary: When verifying clean card ranges, use memory-range-bounded iteration over oops of objects overlapping that range, thus avoiding the otherwise quadratic worst-case cost of scanning large object arrays.
Reviewed-by: jmasa, jwilhelm, tonyp
author | ysr |
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date | Thu, 24 Mar 2011 15:47:01 -0700 |
parents | f95d63e2154a |
children | f08d439fab8c |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP |
26 #define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP | |
27 | |
28 #include "runtime/handles.hpp" | |
29 #ifdef TARGET_OS_FAMILY_linux | |
30 # include "thread_linux.inline.hpp" | |
31 #endif | |
32 #ifdef TARGET_OS_FAMILY_solaris | |
33 # include "thread_solaris.inline.hpp" | |
34 #endif | |
35 #ifdef TARGET_OS_FAMILY_windows | |
36 # include "thread_windows.inline.hpp" | |
37 #endif | |
38 | |
0 | 39 // This file provides more support for exception handling; see also exceptions.hpp |
40 class PreserveExceptionMark { | |
41 private: | |
42 Thread* _thread; | |
43 Handle _preserved_exception_oop; | |
44 int _preserved_exception_line; | |
45 const char* _preserved_exception_file; | |
46 | |
47 public: | |
48 PreserveExceptionMark(Thread*& thread); | |
49 ~PreserveExceptionMark(); | |
50 }; | |
51 | |
52 | |
53 // This is a clone of PreserveExceptionMark which asserts instead | |
54 // of failing when what it wraps generates a pending exception. | |
55 // It also addresses bug 6431341. | |
56 class CautiouslyPreserveExceptionMark { | |
57 private: | |
58 Thread* _thread; | |
59 Handle _preserved_exception_oop; | |
60 int _preserved_exception_line; | |
61 const char* _preserved_exception_file; | |
62 | |
63 public: | |
64 CautiouslyPreserveExceptionMark(Thread* thread); | |
65 ~CautiouslyPreserveExceptionMark(); | |
66 }; | |
67 | |
68 | |
69 // Like PreserveExceptionMark but allows new exceptions to be generated in | |
70 // the body of the mark. If a new exception is generated then the original one | |
71 // is discarded. | |
72 class WeakPreserveExceptionMark { | |
73 private: | |
74 Thread* _thread; | |
75 Handle _preserved_exception_oop; | |
76 int _preserved_exception_line; | |
77 const char* _preserved_exception_file; | |
78 | |
79 void preserve(); | |
80 void restore(); | |
81 | |
82 public: | |
83 WeakPreserveExceptionMark(Thread* pThread) : _thread(pThread), _preserved_exception_oop() { | |
84 if (pThread->has_pending_exception()) { | |
85 preserve(); | |
86 } | |
87 } | |
88 ~WeakPreserveExceptionMark() { | |
89 if (_preserved_exception_oop.not_null()) { | |
90 restore(); | |
91 } | |
92 } | |
93 }; | |
94 | |
95 | |
96 | |
97 // use global exception mark when allowing pending exception to be set and | |
98 // saving and restoring them | |
99 #define PRESERVE_EXCEPTION_MARK Thread* THREAD; PreserveExceptionMark __em(THREAD); | |
1972 | 100 |
101 #endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP |