Mercurial > hg > truffle
annotate src/share/vm/code/scopeDesc.hpp @ 1293:51db1e4b379d
6932536: JSR 292 modified JDK MethodHandlesTest fails on x86_64
Summary: A modified MethodHandlesTest revealed two bugs on x86_64.
Reviewed-by: never, jrose
author | twisti |
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date | Mon, 08 Mar 2010 04:46:30 -0800 |
parents | f70b0d9ab095 |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // SimpleScopeDesc is used when all you need to extract from | |
26 // a given pc,nmethod pair is a methodOop and a bci. This is | |
27 // quite a bit faster than allocating a full ScopeDesc, but | |
28 // very limited in abilities. | |
29 | |
30 class SimpleScopeDesc : public StackObj { | |
31 private: | |
32 methodOop _method; | |
33 int _bci; | |
34 | |
35 public: | |
36 SimpleScopeDesc(nmethod* code,address pc) { | |
37 PcDesc* pc_desc = code->pc_desc_at(pc); | |
38 assert(pc_desc != NULL, "Must be able to find matching PcDesc"); | |
39 DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset()); | |
40 int ignore_sender = buffer.read_int(); | |
41 _method = methodOop(buffer.read_oop()); | |
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72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
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42 _bci = buffer.read_bci(); |
0 | 43 } |
44 | |
45 methodOop method() { return _method; } | |
46 int bci() { return _bci; } | |
47 }; | |
48 | |
49 // ScopeDescs contain the information that makes source-level debugging of | |
50 // nmethods possible; each scopeDesc describes a method activation | |
51 | |
52 class ScopeDesc : public ResourceObj { | |
53 public: | |
54 // Constructor | |
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6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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55 ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool return_oop); |
0 | 56 |
57 // Calls above, giving default value of "serialized_null" to the | |
58 // "obj_decode_offset" argument. (We don't use a default argument to | |
59 // avoid a .hpp-.hpp dependency.) | |
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6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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60 ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop); |
0 | 61 |
62 // JVM state | |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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63 methodHandle method() const { return _method; } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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64 int bci() const { return _bci; } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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65 bool should_reexecute() const { return _reexecute; } |
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6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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66 bool return_oop() const { return _return_oop; } |
0 | 67 |
68 GrowableArray<ScopeValue*>* locals(); | |
69 GrowableArray<ScopeValue*>* expressions(); | |
70 GrowableArray<MonitorValue*>* monitors(); | |
71 GrowableArray<ScopeValue*>* objects(); | |
72 | |
73 // Stack walking, returns NULL if this is the outer most scope. | |
74 ScopeDesc* sender() const; | |
75 | |
76 // Returns where the scope was decoded | |
77 int decode_offset() const { return _decode_offset; } | |
78 | |
79 // Tells whether sender() returns NULL | |
80 bool is_top() const; | |
81 // Tells whether sd is equal to this | |
82 bool is_equal(ScopeDesc* sd) const; | |
83 | |
84 private: | |
85 // Alternative constructor | |
86 ScopeDesc(const ScopeDesc* parent); | |
87 | |
88 // JVM state | |
89 methodHandle _method; | |
90 int _bci; | |
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91 bool _reexecute; |
1253
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6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
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92 bool _return_oop; |
0 | 93 |
94 // Decoding offsets | |
95 int _decode_offset; | |
96 int _sender_decode_offset; | |
97 int _locals_decode_offset; | |
98 int _expressions_decode_offset; | |
99 int _monitors_decode_offset; | |
100 | |
101 // Object pool | |
102 GrowableArray<ScopeValue*>* _objects; | |
103 | |
104 // Nmethod information | |
105 const nmethod* _code; | |
106 | |
107 // Decoding operations | |
108 void decode_body(); | |
109 GrowableArray<ScopeValue*>* decode_scope_values(int decode_offset); | |
110 GrowableArray<MonitorValue*>* decode_monitor_values(int decode_offset); | |
111 GrowableArray<ScopeValue*>* decode_object_values(int decode_offset); | |
112 | |
113 DebugInfoReadStream* stream_at(int decode_offset) const; | |
114 | |
115 | |
116 public: | |
117 // Verification | |
118 void verify(); | |
119 | |
120 #ifndef PRODUCT | |
121 public: | |
122 // Printing support | |
123 void print_on(outputStream* st) const; | |
124 void print_on(outputStream* st, PcDesc* pd) const; | |
125 void print_value_on(outputStream* st) const; | |
126 #endif | |
127 }; |