Thu, 22 May 2014 15:52:41 -0400
8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti
1 /*
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.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_CODE_SCOPEDESC_HPP
26 #define SHARE_VM_CODE_SCOPEDESC_HPP
28 #include "code/debugInfo.hpp"
29 #include "code/pcDesc.hpp"
30 #include "oops/method.hpp"
31 #include "utilities/growableArray.hpp"
33 // SimpleScopeDesc is used when all you need to extract from
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
36 // very limited in abilities.
38 class SimpleScopeDesc : public StackObj {
39 private:
40 Method* _method;
41 int _bci;
43 public:
44 SimpleScopeDesc(nmethod* code,address pc) {
45 PcDesc* pc_desc = code->pc_desc_at(pc);
46 assert(pc_desc != NULL, "Must be able to find matching PcDesc");
47 DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset());
48 int ignore_sender = buffer.read_int();
49 _method = buffer.read_method();
50 _bci = buffer.read_bci();
51 }
53 Method* method() { return _method; }
54 int bci() { return _bci; }
55 };
57 // ScopeDescs contain the information that makes source-level debugging of
58 // nmethods possible; each scopeDesc describes a method activation
60 class ScopeDesc : public ResourceObj {
61 public:
62 // Constructor
63 ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool return_oop);
65 // Calls above, giving default value of "serialized_null" to the
66 // "obj_decode_offset" argument. (We don't use a default argument to
67 // avoid a .hpp-.hpp dependency.)
68 ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool return_oop);
70 // JVM state
71 Method* method() const { return _method; }
72 int bci() const { return _bci; }
73 bool should_reexecute() const { return _reexecute; }
74 bool return_oop() const { return _return_oop; }
76 GrowableArray<ScopeValue*>* locals();
77 GrowableArray<ScopeValue*>* expressions();
78 GrowableArray<MonitorValue*>* monitors();
79 GrowableArray<ScopeValue*>* objects();
81 // Stack walking, returns NULL if this is the outer most scope.
82 ScopeDesc* sender() const;
84 // Returns where the scope was decoded
85 int decode_offset() const { return _decode_offset; }
87 // Tells whether sender() returns NULL
88 bool is_top() const;
89 // Tells whether sd is equal to this
90 bool is_equal(ScopeDesc* sd) const;
92 private:
93 // Alternative constructor
94 ScopeDesc(const ScopeDesc* parent);
96 // JVM state
97 Method* _method;
98 int _bci;
99 bool _reexecute;
100 bool _return_oop;
102 // Decoding offsets
103 int _decode_offset;
104 int _sender_decode_offset;
105 int _locals_decode_offset;
106 int _expressions_decode_offset;
107 int _monitors_decode_offset;
109 // Object pool
110 GrowableArray<ScopeValue*>* _objects;
112 // Nmethod information
113 const nmethod* _code;
115 // Decoding operations
116 void decode_body();
117 GrowableArray<ScopeValue*>* decode_scope_values(int decode_offset);
118 GrowableArray<MonitorValue*>* decode_monitor_values(int decode_offset);
119 GrowableArray<ScopeValue*>* decode_object_values(int decode_offset);
121 DebugInfoReadStream* stream_at(int decode_offset) const;
124 public:
125 // Verification
126 void verify();
128 #ifndef PRODUCT
129 public:
130 // Printing support
131 void print_on(outputStream* st) const;
132 void print_on(outputStream* st, PcDesc* pd) const;
133 void print_value_on(outputStream* st) const;
134 #endif
135 };
137 #endif // SHARE_VM_CODE_SCOPEDESC_HPP