Mercurial > hg > graal-jvmci-8
annotate src/cpu/sparc/vm/javaFrameAnchor_sparc.hpp @ 13515:fa5180b3c18e
renamed pollingPageDistance enum to pollingForm
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 06 Jan 2014 20:43:31 +0100 |
parents | f95d63e2154a |
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rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2002, 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 CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP |
26 #define CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP | |
27 | |
0 | 28 private: |
29 volatile int _flags; | |
30 | |
31 public: | |
32 | |
33 enum pd_Constants { | |
34 flushed = 1 // winodows have flushed | |
35 }; | |
36 | |
37 int flags(void) { return _flags; } | |
38 void set_flags(int flags) { _flags = flags; } | |
39 | |
40 static ByteSize flags_offset() { return byte_offset_of(JavaFrameAnchor, _flags); } | |
41 | |
42 // Each arch must define clear, copy | |
43 // These are used by objects that only care about: | |
44 // 1 - initializing a new state (thread creation, javaCalls) | |
45 // 2 - saving a current state (javaCalls) | |
46 // 3 - restoring an old state (javaCalls) | |
47 | |
48 void clear(void) { | |
49 // clearing _last_Java_sp must be first | |
50 _last_Java_sp = NULL; | |
51 // fence? | |
52 _flags = 0; | |
53 _last_Java_pc = NULL; | |
54 } | |
55 | |
56 void copy(JavaFrameAnchor* src) { | |
57 // In order to make sure the transition state is valid for "this" | |
58 // We must clear _last_Java_sp before copying the rest of the new data | |
59 // | |
60 // Hack Alert: Temporary bugfix for 4717480/4721647 | |
61 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp | |
62 // unless the value is changing | |
63 // | |
64 if (_last_Java_sp != src->_last_Java_sp) | |
65 _last_Java_sp = NULL; | |
66 | |
67 _flags = src->_flags; | |
68 _last_Java_pc = src->_last_Java_pc; | |
69 // Must be last so profiler will always see valid frame if has_last_frame() is true | |
70 _last_Java_sp = src->_last_Java_sp; | |
71 } | |
72 | |
73 // Is stack walkable | |
74 inline bool walkable( void) { | |
75 return _flags & flushed; | |
76 } | |
77 | |
78 void make_walkable(JavaThread* thread); | |
79 | |
80 void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; } | |
81 | |
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82 address last_Java_pc(void) { return _last_Java_pc; } |
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83 |
0 | 84 // These are only used by friends |
85 private: | |
86 | |
87 intptr_t* last_Java_sp() const { | |
88 // _last_Java_sp will always be a an unbiased stack pointer | |
89 // if is is biased then some setter screwed up. This is | |
90 // deadly. | |
91 #ifdef _LP64 | |
92 assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp"); | |
93 #endif | |
94 return _last_Java_sp; | |
95 } | |
96 | |
97 void capture_last_Java_pc(intptr_t* sp); | |
98 | |
99 void set_window_flushed( void) { | |
100 _flags |= flushed; | |
101 OrderAccess::fence(); | |
102 } | |
1972 | 103 |
104 #endif // CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP |