Mercurial > hg > graal-jvmci-8
annotate src/share/vm/utilities/preserveException.cpp @ 1836:894b1d7c7e01
6423256: GC stacks should use a better data structure
6942771: SEGV in ParScanThreadState::take_from_overflow_stack
Reviewed-by: apetrusenko, ysr, pbk
author | jcoomes |
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date | Tue, 28 Sep 2010 15:56:15 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. |
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12 * version 2 for more details (a copy is included in the LICENSE file that | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_preserveException.cpp.incl" | |
27 | |
28 // TODO: These three classes should be refactored | |
29 | |
30 PreserveExceptionMark::PreserveExceptionMark(Thread*& thread) { | |
31 thread = Thread::current(); | |
32 _thread = thread; | |
33 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
34 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
35 _preserved_exception_line = _thread->exception_line(); | |
36 _preserved_exception_file = _thread->exception_file(); | |
37 } | |
38 | |
39 | |
40 PreserveExceptionMark::~PreserveExceptionMark() { | |
41 if (_thread->has_pending_exception()) { | |
42 oop exception = _thread->pending_exception(); | |
43 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
44 exception->print(); | |
45 fatal("PreserveExceptionMark destructor expects no pending exceptions"); | |
46 } | |
47 if (_preserved_exception_oop() != NULL) { | |
48 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
49 } | |
50 } | |
51 | |
52 | |
53 // This code is cloned from PreserveExceptionMark, except that: | |
54 // returned pending exceptions do not cause a crash. | |
55 // thread is passed in, not set (not a reference parameter) | |
56 // and bug 6431341 has been addressed. | |
57 | |
58 CautiouslyPreserveExceptionMark::CautiouslyPreserveExceptionMark(Thread* thread) { | |
59 _thread = thread; | |
60 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
61 _preserved_exception_line = _thread->exception_line(); | |
62 _preserved_exception_file = _thread->exception_file(); | |
63 _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor | |
64 } | |
65 | |
66 | |
67 CautiouslyPreserveExceptionMark::~CautiouslyPreserveExceptionMark() { | |
68 assert(!_thread->has_pending_exception(), "unexpected exception generated"); | |
69 if (_thread->has_pending_exception()) { | |
70 _thread->clear_pending_exception(); | |
71 } | |
72 if (_preserved_exception_oop() != NULL) { | |
73 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
74 } | |
75 } | |
76 | |
77 | |
78 void WeakPreserveExceptionMark::preserve() { | |
79 _preserved_exception_oop = Handle(_thread, _thread->pending_exception()); | |
80 _preserved_exception_line = _thread->exception_line(); | |
81 _preserved_exception_file = _thread->exception_file(); | |
82 _thread->clear_pending_exception(); | |
83 } | |
84 | |
85 void WeakPreserveExceptionMark::restore() { | |
86 if (!_thread->has_pending_exception()) { | |
87 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
88 } | |
89 } |