Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/bytecodeStream.cpp @ 3992:d1bdeef3e3e2
7098282: G1: assert(interval >= 0) failed: Sanity check, referencePolicy.cpp: 76
Summary: There is a race between one thread successfully forwarding and copying the klass mirror for the SoftReference class (including the static master clock) and another thread attempting to use the master clock while attempting to discover a soft reference object. Maintain a shadow copy of the soft reference master clock and use the shadow during reference discovery and reference processing.
Reviewed-by: tonyp, brutisso, ysr
author | johnc |
---|---|
date | Wed, 12 Oct 2011 10:25:51 -0700 |
parents | 8012aa3ccede |
children |
rev | line source |
---|---|
0 | 1 /* |
2142 | 2 * Copyright (c) 1997, 2011, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/bytecodeStream.hpp" | |
27 #include "interpreter/bytecodes.hpp" | |
0 | 28 |
29 Bytecodes::Code RawBytecodeStream::raw_next_special(Bytecodes::Code code) { | |
30 assert(!is_last_bytecode(), "should have been checked"); | |
31 // set next bytecode position | |
413
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
32 address bcp = RawBytecodeStream::bcp(); |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
33 address end = method()->code_base() + end_bci(); |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
34 int l = Bytecodes::raw_special_length_at(bcp, end); |
0 | 35 if (l <= 0 || (_bci + l) > _end_bci) { |
36 code = Bytecodes::_illegal; | |
37 } else { | |
38 _next_bci += l; | |
39 assert(_bci < _next_bci, "length must be > 0"); | |
40 // set attributes | |
41 _is_wide = false; | |
42 // check for special (uncommon) cases | |
43 if (code == Bytecodes::_wide) { | |
413
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
44 if (bcp + 1 >= end) { |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
45 code = Bytecodes::_illegal; |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
46 } else { |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
47 code = (Bytecodes::Code)bcp[1]; |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
48 _is_wide = true; |
c7ec737733a6
6756528: Bytecodes::special_length_at reads past end of code buffer
kamg
parents:
0
diff
changeset
|
49 } |
0 | 50 } |
51 } | |
1565 | 52 _raw_code = code; |
0 | 53 return code; |
54 } | |
1565 | 55 |
56 #ifdef ASSERT | |
57 void BaseBytecodeStream::assert_raw_index_size(int size) const { | |
58 if (raw_code() == Bytecodes::_invokedynamic && is_raw()) { | |
59 // in raw mode, pretend indy is "bJJ__" | |
60 assert(size == 2, "raw invokedynamic instruction has 2-byte index only"); | |
61 } else { | |
2142 | 62 bytecode().assert_index_size(size, raw_code(), is_wide()); |
1565 | 63 } |
64 } | |
65 | |
66 void BaseBytecodeStream::assert_raw_stream(bool want_raw) const { | |
67 if (want_raw) { | |
68 assert( is_raw(), "this function only works on raw streams"); | |
69 } else { | |
70 assert(!is_raw(), "this function only works on non-raw streams"); | |
71 } | |
72 } | |
73 #endif //ASSERT |