Mercurial > hg > graal-jvmci-8
comparison src/share/vm/code/scopeDesc.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | f95d63e2154a |
children | e522a00b91aa 933c8a58c9dc |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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1 /* | 1 /* |
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
25 #ifndef SHARE_VM_CODE_SCOPEDESC_HPP | 25 #ifndef SHARE_VM_CODE_SCOPEDESC_HPP |
26 #define SHARE_VM_CODE_SCOPEDESC_HPP | 26 #define SHARE_VM_CODE_SCOPEDESC_HPP |
27 | 27 |
28 #include "code/debugInfo.hpp" | 28 #include "code/debugInfo.hpp" |
29 #include "code/pcDesc.hpp" | 29 #include "code/pcDesc.hpp" |
30 #include "oops/methodOop.hpp" | 30 #include "oops/method.hpp" |
31 #include "utilities/growableArray.hpp" | 31 #include "utilities/growableArray.hpp" |
32 | 32 |
33 // SimpleScopeDesc is used when all you need to extract from | 33 // SimpleScopeDesc is used when all you need to extract from |
34 // a given pc,nmethod pair is a methodOop and a bci. This is | 34 // a given pc,nmethod pair is a Method* and a bci. This is |
35 // quite a bit faster than allocating a full ScopeDesc, but | 35 // quite a bit faster than allocating a full ScopeDesc, but |
36 // very limited in abilities. | 36 // very limited in abilities. |
37 | 37 |
38 class SimpleScopeDesc : public StackObj { | 38 class SimpleScopeDesc : public StackObj { |
39 private: | 39 private: |
40 methodOop _method; | 40 Method* _method; |
41 int _bci; | 41 int _bci; |
42 | 42 |
43 public: | 43 public: |
44 SimpleScopeDesc(nmethod* code,address pc) { | 44 SimpleScopeDesc(nmethod* code,address pc) { |
45 PcDesc* pc_desc = code->pc_desc_at(pc); | 45 PcDesc* pc_desc = code->pc_desc_at(pc); |
46 assert(pc_desc != NULL, "Must be able to find matching PcDesc"); | 46 assert(pc_desc != NULL, "Must be able to find matching PcDesc"); |
47 DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset()); | 47 DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset()); |
48 int ignore_sender = buffer.read_int(); | 48 int ignore_sender = buffer.read_int(); |
49 _method = methodOop(buffer.read_oop()); | 49 _method = buffer.read_method(); |
50 _bci = buffer.read_bci(); | 50 _bci = buffer.read_bci(); |
51 } | 51 } |
52 | 52 |
53 methodOop method() { return _method; } | 53 Method* method() { return _method; } |
54 int bci() { return _bci; } | 54 int bci() { return _bci; } |
55 }; | 55 }; |
56 | 56 |
57 // ScopeDescs contain the information that makes source-level debugging of | 57 // ScopeDescs contain the information that makes source-level debugging of |
58 // nmethods possible; each scopeDesc describes a method activation | 58 // nmethods possible; each scopeDesc describes a method activation |
66 // "obj_decode_offset" argument. (We don't use a default argument to | 66 // "obj_decode_offset" argument. (We don't use a default argument to |
67 // avoid a .hpp-.hpp dependency.) | 67 // avoid a .hpp-.hpp dependency.) |
68 ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop); | 68 ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop); |
69 | 69 |
70 // JVM state | 70 // JVM state |
71 methodHandle method() const { return _method; } | 71 Method* method() const { return _method; } |
72 int bci() const { return _bci; } | 72 int bci() const { return _bci; } |
73 bool should_reexecute() const { return _reexecute; } | 73 bool should_reexecute() const { return _reexecute; } |
74 bool return_oop() const { return _return_oop; } | 74 bool return_oop() const { return _return_oop; } |
75 | 75 |
76 GrowableArray<ScopeValue*>* locals(); | 76 GrowableArray<ScopeValue*>* locals(); |
92 private: | 92 private: |
93 // Alternative constructor | 93 // Alternative constructor |
94 ScopeDesc(const ScopeDesc* parent); | 94 ScopeDesc(const ScopeDesc* parent); |
95 | 95 |
96 // JVM state | 96 // JVM state |
97 methodHandle _method; | 97 Method* _method; |
98 int _bci; | 98 int _bci; |
99 bool _reexecute; | 99 bool _reexecute; |
100 bool _return_oop; | 100 bool _return_oop; |
101 | 101 |
102 // Decoding offsets | 102 // Decoding offsets |