author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 38673 | hotspot/src/share/vm/code/debugInfoRec.hpp@e8a403dd5a7d |
child 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
33593
60764a78fa5c
8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents:
33160
diff
changeset
|
2 |
* Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4894
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4894
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4894
diff
changeset
|
21 |
* questions. |
1 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 25 |
#ifndef SHARE_VM_CODE_DEBUGINFOREC_HPP |
26 |
#define SHARE_VM_CODE_DEBUGINFOREC_HPP |
|
27 |
||
28 |
#include "ci/ciClassList.hpp" |
|
29 |
#include "ci/ciInstanceKlass.hpp" |
|
30 |
#include "ci/ciMethod.hpp" |
|
31 |
#include "code/debugInfo.hpp" |
|
32 |
#include "code/location.hpp" |
|
33 |
#include "code/pcDesc.hpp" |
|
34 |
#include "compiler/oopMap.hpp" |
|
35 |
#include "oops/oop.hpp" |
|
36 |
#include "utilities/growableArray.hpp" |
|
37 |
||
1 | 38 |
//** The DebugInformationRecorder collects debugging information |
39 |
// for a compiled method. |
|
40 |
// Debugging information is used for: |
|
41 |
// - garbage collecting compiled frames |
|
42 |
// - stack tracing across compiled frames |
|
43 |
// - deoptimizating compiled frames |
|
44 |
// |
|
45 |
// The implementation requires the compiler to use the recorder |
|
46 |
// in the following order: |
|
47 |
// 1) Describe debug information for safepoints at increasing addresses. |
|
48 |
// a) Add safepoint entry (use add_safepoint or add_non_safepoint) |
|
49 |
// b) Describe scopes for that safepoint |
|
50 |
// - create locals if needed (use create_scope_values) |
|
51 |
// - create expressions if needed (use create_scope_values) |
|
52 |
// - create monitor stack if needed (use create_monitor_values) |
|
53 |
// - describe scope (use describe_scope) |
|
54 |
// "repeat last four steps for all scopes" |
|
55 |
// "outer most scope first and inner most scope last" |
|
56 |
// NB: nodes from create_scope_values and create_locations |
|
57 |
// can be reused for simple sharing. |
|
58 |
// - mark the end of the scopes (end_safepoint or end_non_safepoint) |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
59 |
// 2) Use oop_size, metadata_size, data_size, pcs_size to create the nmethod |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
60 |
// and finally migrate the debugging information into the nmethod |
1 | 61 |
// by calling copy_to. |
62 |
||
63 |
class DebugToken; // Opaque datatype for stored: |
|
64 |
// - GrowableArray<ScopeValue*> |
|
65 |
// - GrowableArray<MonitorValue*> |
|
66 |
||
67 |
// Alias for InvocationEntryBci. |
|
68 |
// Both constants are used for a pseudo-BCI which refers |
|
69 |
// to the state just _before_ a method is entered. |
|
70 |
// SynchronizationEntryBCI is used where the emphasis |
|
71 |
// is on the implicit monitorenter of a synchronized method. |
|
72 |
const int SynchronizationEntryBCI = InvocationEntryBci; |
|
73 |
||
74 |
class DIR_Chunk; // private class, a nugget of collected information |
|
75 |
||
76 |
class DebugInformationRecorder: public ResourceObj { |
|
77 |
public: |
|
78 |
// constructor |
|
79 |
DebugInformationRecorder(OopRecorder* oop_recorder); |
|
80 |
||
81 |
// adds an oopmap at a specific offset |
|
82 |
void add_oopmap(int pc_offset, OopMap* map); |
|
83 |
||
84 |
// adds a jvm mapping at pc-offset, for a safepoint only |
|
85 |
void add_safepoint(int pc_offset, OopMap* map); |
|
86 |
||
87 |
// adds a jvm mapping at pc-offset, for a non-safepoint (profile point) |
|
88 |
void add_non_safepoint(int pc_offset); |
|
89 |
||
90 |
// Describes debugging information for a scope at the given pc_offset. |
|
91 |
// Calls must be in non-decreasing order of pc_offset. |
|
92 |
// If there are several calls at a single pc_offset, |
|
93 |
// then they occur in the same order as they were performed by the JVM, |
|
94 |
// with the most recent (innermost) call being described last. |
|
95 |
// For a safepoint, the pc_offset must have been mentioned |
|
96 |
// previously by add_safepoint. |
|
97 |
// Otherwise, the pc_offset must have been mentioned previously |
|
98 |
// by add_non_safepoint, and the locals, expressions, and monitors |
|
99 |
// must all be null. |
|
100 |
void describe_scope(int pc_offset, |
|
33593
60764a78fa5c
8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents:
33160
diff
changeset
|
101 |
const methodHandle& methodH, |
1 | 102 |
ciMethod* method, |
103 |
int bci, |
|
3600
27aa4477d039
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
1
diff
changeset
|
104 |
bool reexecute, |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
105 |
bool rethrow_exception = false, |
4564
55dfb20908d0
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
3795
diff
changeset
|
106 |
bool is_method_handle_invoke = false, |
4894
8a76fd3d098d
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
4564
diff
changeset
|
107 |
bool return_oop = false, |
1 | 108 |
DebugToken* locals = NULL, |
109 |
DebugToken* expressions = NULL, |
|
110 |
DebugToken* monitors = NULL); |
|
111 |
||
112 |
||
113 |
void dump_object_pool(GrowableArray<ScopeValue*>* objects); |
|
114 |
||
115 |
// This call must follow every add_safepoint, |
|
116 |
// after any intervening describe_scope calls. |
|
117 |
void end_safepoint(int pc_offset) { end_scopes(pc_offset, true); } |
|
118 |
void end_non_safepoint(int pc_offset) { end_scopes(pc_offset, false); } |
|
119 |
||
120 |
// helper fuctions for describe_scope to enable sharing |
|
121 |
DebugToken* create_scope_values(GrowableArray<ScopeValue*>* values); |
|
122 |
DebugToken* create_monitor_values(GrowableArray<MonitorValue*>* monitors); |
|
123 |
||
124 |
// returns the size of the generated scopeDescs. |
|
125 |
int data_size(); |
|
126 |
int pcs_size(); |
|
127 |
int oop_size() { return oop_recorder()->oop_size(); } |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
128 |
int metadata_size() { return oop_recorder()->metadata_size(); } |
1 | 129 |
|
130 |
// copy the generated debugging information to nmethod |
|
131 |
void copy_to(nmethod* nm); |
|
132 |
||
133 |
// verifies the debug information |
|
134 |
void verify(const nmethod* code); |
|
135 |
||
136 |
static void print_statistics() PRODUCT_RETURN; |
|
137 |
||
138 |
// Method for setting oopmaps to temporarily preserve old handling of oopmaps |
|
139 |
OopMapSet *_oopmaps; |
|
140 |
void set_oopmaps(OopMapSet *oopmaps) { _oopmaps = oopmaps; } |
|
141 |
||
142 |
OopRecorder* oop_recorder() { return _oop_recorder; } |
|
143 |
||
144 |
int last_pc_offset() { return last_pc()->pc_offset(); } |
|
145 |
||
146 |
bool recording_non_safepoints() { return _recording_non_safepoints; } |
|
147 |
||
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
148 |
PcDesc* pcs() const { return _pcs; } |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
149 |
int pcs_length() const { return _pcs_length; } |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
150 |
|
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
151 |
DebugInfoWriteStream* stream() const { return _stream; } |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
152 |
|
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
13728
diff
changeset
|
153 |
|
1 | 154 |
private: |
155 |
friend class ScopeDesc; |
|
156 |
friend class vframeStreamCommon; |
|
157 |
friend class DIR_Chunk; |
|
158 |
||
159 |
// True if we are recording non-safepoint scopes. |
|
160 |
// This flag is set if DebugNonSafepoints is true, or if |
|
161 |
// JVMTI post_compiled_method_load events are enabled. |
|
162 |
const bool _recording_non_safepoints; |
|
163 |
||
164 |
DebugInfoWriteStream* _stream; |
|
165 |
||
166 |
OopRecorder* _oop_recorder; |
|
167 |
||
168 |
// Scopes that have been described so far. |
|
169 |
GrowableArray<DIR_Chunk*>* _all_chunks; |
|
170 |
DIR_Chunk* _next_chunk; |
|
171 |
DIR_Chunk* _next_chunk_limit; |
|
172 |
||
173 |
#ifdef ASSERT |
|
174 |
enum { rs_null, rs_safepoint, rs_non_safepoint }; |
|
175 |
int _recording_state; |
|
176 |
#endif |
|
177 |
||
178 |
PcDesc* _pcs; |
|
179 |
int _pcs_size; |
|
180 |
int _pcs_length; |
|
181 |
// Note: Would use GrowableArray<PcDesc>, but structs are not supported. |
|
182 |
||
183 |
// PC of most recent real safepoint before the current one, |
|
184 |
// updated after end_scopes. |
|
185 |
int _prev_safepoint_pc; |
|
186 |
||
187 |
PcDesc* last_pc() { |
|
188 |
guarantee(_pcs_length > 0, "a safepoint must be declared already"); |
|
189 |
return &_pcs[_pcs_length-1]; |
|
190 |
} |
|
191 |
PcDesc* prev_pc() { |
|
192 |
guarantee(_pcs_length > 1, "a safepoint must be declared already"); |
|
193 |
return &_pcs[_pcs_length-2]; |
|
194 |
} |
|
195 |
void add_new_pc_offset(int pc_offset); |
|
196 |
void end_scopes(int pc_offset, bool is_safepoint); |
|
197 |
||
198 |
int serialize_monitor_values(GrowableArray<MonitorValue*>* monitors); |
|
199 |
int serialize_scope_values(GrowableArray<ScopeValue*>* values); |
|
200 |
int find_sharable_decode_offset(int stream_offset); |
|
201 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
202 |
#ifndef PRODUCT |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
203 |
bool recorders_frozen(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
204 |
void mark_recorders_frozen(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
205 |
#endif // PRODUCT |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
7397
diff
changeset
|
206 |
|
1 | 207 |
public: |
208 |
enum { serialized_null = 0 }; |
|
209 |
}; |
|
7397 | 210 |
|
211 |
#endif // SHARE_VM_CODE_DEBUGINFOREC_HPP |