Mercurial > hg > truffle
annotate src/share/vm/memory/heapInspection.hpp @ 10975:ab313d4e9a8b
8011968: Kitchensink crashed with SIGSEGV in MemBaseline::baseline
Summary: Simple fix to add NULL pointer check that can cause segv
Reviewed-by: coleenp, ctornqvi
author | zgu |
---|---|
date | Fri, 14 Jun 2013 09:18:42 -0400 |
parents | f2110083203d |
children | 2cbc8f3011a0 |
rev | line source |
---|---|
0 | 1 /* |
7956 | 2 * Copyright (c) 2002, 2013, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
615
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
615
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
615
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_MEMORY_HEAPINSPECTION_HPP |
26 #define SHARE_VM_MEMORY_HEAPINSPECTION_HPP | |
27 | |
28 #include "memory/allocation.inline.hpp" | |
10405 | 29 #include "memory/klassInfoClosure.hpp" |
1972 | 30 #include "oops/oop.inline.hpp" |
7956 | 31 #include "oops/annotations.hpp" |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6854
diff
changeset
|
32 #include "utilities/macros.hpp" |
1972 | 33 |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
34 #if INCLUDE_SERVICES |
0 | 35 |
36 | |
37 // HeapInspection | |
38 | |
39 // KlassInfoTable is a bucket hash table that | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
40 // maps Klass*s to extra information: |
0 | 41 // instance count and instance word size. |
42 // | |
43 // A KlassInfoBucket is the head of a link list | |
44 // of KlassInfoEntry's | |
45 // | |
46 // KlassInfoHisto is a growable array of pointers | |
47 // to KlassInfoEntry's and is used to sort | |
48 // the entries. | |
49 | |
7956 | 50 #define HEAP_INSPECTION_COLUMNS_DO(f) \ |
51 f(inst_size, InstSize, \ | |
52 "Size of each object instance of the Java class") \ | |
53 f(inst_count, InstCount, \ | |
54 "Number of object instances of the Java class") \ | |
55 f(inst_bytes, InstBytes, \ | |
56 "This is usually (InstSize * InstNum). The only exception is " \ | |
57 "java.lang.Class, whose InstBytes also includes the slots " \ | |
58 "used to store static fields. InstBytes is not counted in " \ | |
59 "ROAll, RWAll or Total") \ | |
60 f(mirror_bytes, Mirror, \ | |
61 "Size of the Klass::java_mirror() object") \ | |
62 f(klass_bytes, KlassBytes, \ | |
63 "Size of the InstanceKlass or ArrayKlass for this class. " \ | |
64 "Note that this includes VTab, ITab, OopMap") \ | |
65 f(secondary_supers_bytes, K_secondary_supers, \ | |
66 "Number of bytes used by the Klass::secondary_supers() array") \ | |
67 f(vtab_bytes, VTab, \ | |
68 "Size of the embedded vtable in InstanceKlass") \ | |
69 f(itab_bytes, ITab, \ | |
70 "Size of the embedded itable in InstanceKlass") \ | |
71 f(nonstatic_oopmap_bytes, OopMap, \ | |
72 "Size of the embedded nonstatic_oop_map in InstanceKlass") \ | |
73 f(methods_array_bytes, IK_methods, \ | |
74 "Number of bytes used by the InstanceKlass::methods() array") \ | |
75 f(method_ordering_bytes, IK_method_ordering, \ | |
76 "Number of bytes used by the InstanceKlass::method_ordering() array") \ | |
77 f(local_interfaces_bytes, IK_local_interfaces, \ | |
78 "Number of bytes used by the InstanceKlass::local_interfaces() array") \ | |
79 f(transitive_interfaces_bytes, IK_transitive_interfaces, \ | |
80 "Number of bytes used by the InstanceKlass::transitive_interfaces() array") \ | |
81 f(fields_bytes, IK_fields, \ | |
82 "Number of bytes used by the InstanceKlass::fields() array") \ | |
83 f(inner_classes_bytes, IK_inner_classes, \ | |
84 "Number of bytes used by the InstanceKlass::inner_classes() array") \ | |
85 f(signers_bytes, IK_signers, \ | |
86 "Number of bytes used by the InstanceKlass::singers() array") \ | |
87 f(class_annotations_bytes, class_annotations, \ | |
88 "Size of class annotations") \ | |
8031 | 89 f(class_type_annotations_bytes, class_type_annotations, \ |
90 "Size of class type annotations") \ | |
7956 | 91 f(fields_annotations_bytes, fields_annotations, \ |
92 "Size of field annotations") \ | |
8031 | 93 f(fields_type_annotations_bytes, fields_type_annotations, \ |
94 "Size of field type annotations") \ | |
7956 | 95 f(methods_annotations_bytes, methods_annotations, \ |
96 "Size of method annotations") \ | |
97 f(methods_parameter_annotations_bytes, methods_parameter_annotations, \ | |
98 "Size of method parameter annotations") \ | |
8031 | 99 f(methods_type_annotations_bytes, methods_type_annotations, \ |
100 "Size of methods type annotations") \ | |
7956 | 101 f(methods_default_annotations_bytes, methods_default_annotations, \ |
102 "Size of methods default annotations") \ | |
103 f(annotations_bytes, annotations, \ | |
104 "Size of all annotations") \ | |
105 f(cp_bytes, Cp, \ | |
106 "Size of InstanceKlass::constants()") \ | |
107 f(cp_tags_bytes, CpTags, \ | |
108 "Size of InstanceKlass::constants()->tags()") \ | |
109 f(cp_cache_bytes, CpCache, \ | |
110 "Size of InstanceKlass::constants()->cache()") \ | |
111 f(cp_operands_bytes, CpOperands, \ | |
112 "Size of InstanceKlass::constants()->operands()") \ | |
113 f(cp_refmap_bytes, CpRefMap, \ | |
114 "Size of InstanceKlass::constants()->reference_map()") \ | |
115 f(cp_all_bytes, CpAll, \ | |
116 "Sum of Cp + CpTags + CpCache + CpOperands + CpRefMap") \ | |
117 f(method_count, MethodCount, \ | |
118 "Number of methods in this class") \ | |
119 f(method_bytes, MethodBytes, \ | |
120 "Size of the Method object") \ | |
121 f(const_method_bytes, ConstMethod, \ | |
122 "Size of the ConstMethod object") \ | |
123 f(method_data_bytes, MethodData, \ | |
124 "Size of the MethodData object") \ | |
125 f(stackmap_bytes, StackMap, \ | |
126 "Size of the stackmap_data") \ | |
127 f(bytecode_bytes, Bytecodes, \ | |
128 "Of the MethodBytes column, how much are the space taken up by bytecodes") \ | |
129 f(method_all_bytes, MethodAll, \ | |
130 "Sum of MethodBytes + Constmethod + Stackmap + Methoddata") \ | |
131 f(ro_bytes, ROAll, \ | |
132 "Size of all class meta data that could (potentially) be placed " \ | |
133 "in read-only memory. (This could change with CDS design)") \ | |
134 f(rw_bytes, RWAll, \ | |
135 "Size of all class meta data that must be placed in read/write " \ | |
136 "memory. (This could change with CDS design) ") \ | |
137 f(total_bytes, Total, \ | |
138 "ROAll + RWAll. Note that this does NOT include InstBytes.") | |
139 | |
140 // Size statistics for a Klass - filled in by Klass::collect_statistics() | |
141 class KlassSizeStats { | |
142 public: | |
143 #define COUNT_KLASS_SIZE_STATS_FIELD(field, name, help) _index_ ## field, | |
144 #define DECLARE_KLASS_SIZE_STATS_FIELD(field, name, help) julong _ ## field; | |
145 | |
146 enum { | |
147 HEAP_INSPECTION_COLUMNS_DO(COUNT_KLASS_SIZE_STATS_FIELD) | |
148 _num_columns | |
149 }; | |
150 | |
151 HEAP_INSPECTION_COLUMNS_DO(DECLARE_KLASS_SIZE_STATS_FIELD) | |
152 | |
153 static int count(oop x) { | |
154 return (HeapWordSize * ((x) ? (x)->size() : 0)); | |
155 } | |
156 | |
157 static int count_array(objArrayOop x) { | |
158 return (HeapWordSize * ((x) ? (x)->size() : 0)); | |
159 } | |
160 | |
161 template <class T> static int count(T* x) { | |
162 return (HeapWordSize * ((x) ? (x)->size() : 0)); | |
163 } | |
164 | |
165 template <class T> static int count_array(T* x) { | |
166 if (x == NULL) { | |
167 return 0; | |
168 } | |
169 if (x->length() == 0) { | |
170 // This is a shared array, e.g., Universe::the_empty_int_array(). Don't | |
171 // count it to avoid double-counting. | |
172 return 0; | |
173 } | |
174 return HeapWordSize * x->size(); | |
175 } | |
176 }; | |
177 | |
178 | |
179 | |
180 | |
6197 | 181 class KlassInfoEntry: public CHeapObj<mtInternal> { |
0 | 182 private: |
183 KlassInfoEntry* _next; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
184 Klass* _klass; |
0 | 185 long _instance_count; |
186 size_t _instance_words; | |
7956 | 187 long _index; |
0 | 188 |
189 public: | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
190 KlassInfoEntry(Klass* k, KlassInfoEntry* next) : |
7956 | 191 _klass(k), _instance_count(0), _instance_words(0), _next(next), _index(-1) |
0 | 192 {} |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
193 KlassInfoEntry* next() const { return _next; } |
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
194 bool is_equal(const Klass* k) { return k == _klass; } |
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
195 Klass* klass() const { return _klass; } |
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
196 long count() const { return _instance_count; } |
0 | 197 void set_count(long ct) { _instance_count = ct; } |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
198 size_t words() const { return _instance_words; } |
0 | 199 void set_words(size_t wds) { _instance_words = wds; } |
7956 | 200 void set_index(long index) { _index = index; } |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
201 long index() const { return _index; } |
0 | 202 int compare(KlassInfoEntry* e1, KlassInfoEntry* e2); |
203 void print_on(outputStream* st) const; | |
7956 | 204 const char* name() const; |
0 | 205 }; |
206 | |
6197 | 207 class KlassInfoBucket: public CHeapObj<mtInternal> { |
0 | 208 private: |
209 KlassInfoEntry* _list; | |
210 KlassInfoEntry* list() { return _list; } | |
211 void set_list(KlassInfoEntry* l) { _list = l; } | |
212 public: | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
213 KlassInfoEntry* lookup(Klass* k); |
0 | 214 void initialize() { _list = NULL; } |
215 void empty(); | |
216 void iterate(KlassInfoClosure* cic); | |
217 }; | |
218 | |
219 class KlassInfoTable: public StackObj { | |
220 private: | |
221 int _size; | |
10405 | 222 static const int _num_buckets = 20011; |
223 size_t _size_of_instances_in_words; | |
0 | 224 |
225 // An aligned reference address (typically the least | |
226 // address in the perm gen) used for hashing klass | |
227 // objects. | |
228 HeapWord* _ref; | |
229 | |
230 KlassInfoBucket* _buckets; | |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
231 uint hash(const Klass* p); |
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
8031
diff
changeset
|
232 KlassInfoEntry* lookup(Klass* k); // allocates if not found! |
7956 | 233 |
234 class AllClassesFinder : public KlassClosure { | |
235 KlassInfoTable *_table; | |
236 public: | |
237 AllClassesFinder(KlassInfoTable* table) : _table(table) {} | |
238 virtual void do_klass(Klass* k); | |
239 }; | |
0 | 240 |
241 public: | |
10405 | 242 KlassInfoTable(bool need_class_stats); |
0 | 243 ~KlassInfoTable(); |
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
244 bool record_instance(const oop obj); |
0 | 245 void iterate(KlassInfoClosure* cic); |
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
246 bool allocation_failed() { return _buckets == NULL; } |
10405 | 247 size_t size_of_instances_in_words() const; |
7956 | 248 |
249 friend class KlassInfoHisto; | |
0 | 250 }; |
251 | |
252 class KlassInfoHisto : public StackObj { | |
253 private: | |
10405 | 254 static const int _histo_initial_size = 1000; |
7956 | 255 KlassInfoTable *_cit; |
0 | 256 GrowableArray<KlassInfoEntry*>* _elements; |
257 GrowableArray<KlassInfoEntry*>* elements() const { return _elements; } | |
258 const char* _title; | |
259 const char* title() const { return _title; } | |
260 static int sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2); | |
261 void print_elements(outputStream* st) const; | |
7956 | 262 void print_class_stats(outputStream* st, bool csv_format, const char *columns); |
263 julong annotations_bytes(Array<AnnotationArray*>* p) const; | |
264 const char *_selected_columns; | |
265 bool is_selected(const char *col_name); | |
266 void print_title(outputStream* st, bool csv_format, | |
267 bool selected_columns_table[], int width_table[], | |
268 const char *name_table[]); | |
269 | |
270 template <class T> static int count_bytes(T* x) { | |
271 return (HeapWordSize * ((x) ? (x)->size() : 0)); | |
272 } | |
273 | |
274 template <class T> static int count_bytes_array(T* x) { | |
275 if (x == NULL) { | |
276 return 0; | |
277 } | |
278 if (x->length() == 0) { | |
279 // This is a shared array, e.g., Universe::the_empty_int_array(). Don't | |
280 // count it to avoid double-counting. | |
281 return 0; | |
282 } | |
283 return HeapWordSize * x->size(); | |
284 } | |
285 | |
286 // returns a format string to print a julong with the given width. E.g, | |
287 // printf(num_fmt(6), julong(10)) would print out the number 10 with 4 | |
288 // leading spaces. | |
289 static void print_julong(outputStream* st, int width, julong n) { | |
290 int num_spaces = width - julong_width(n); | |
291 if (num_spaces > 0) { | |
292 st->print(str_fmt(num_spaces), ""); | |
293 } | |
294 st->print(JULONG_FORMAT, n); | |
295 } | |
296 | |
297 static char* perc_fmt(int width) { | |
298 static char buf[32]; | |
299 jio_snprintf(buf, sizeof(buf), "%%%d.1f%%%%", width-1); | |
300 return buf; | |
301 } | |
302 | |
303 static char* str_fmt(int width) { | |
304 static char buf[32]; | |
305 jio_snprintf(buf, sizeof(buf), "%%%ds", width); | |
306 return buf; | |
307 } | |
308 | |
309 static int julong_width(julong n) { | |
310 if (n == 0) { | |
311 return 1; | |
312 } | |
313 int w = 0; | |
314 while (n > 0) { | |
315 n /= 10; | |
316 w += 1; | |
317 } | |
318 return w; | |
319 } | |
320 | |
321 static int col_width(julong n, const char *name) { | |
322 int w = julong_width(n); | |
323 int min = (int)(strlen(name)); | |
324 if (w < min) { | |
325 w = min; | |
326 } | |
327 // add a leading space for separation. | |
328 return w + 1; | |
329 } | |
330 | |
0 | 331 public: |
10405 | 332 KlassInfoHisto(KlassInfoTable* cit, const char* title); |
0 | 333 ~KlassInfoHisto(); |
334 void add(KlassInfoEntry* cie); | |
7956 | 335 void print_histo_on(outputStream* st, bool print_class_stats, bool csv_format, const char *columns); |
0 | 336 void sort(); |
337 }; | |
338 | |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
339 #endif // INCLUDE_SERVICES |
0 | 340 |
10405 | 341 // These declarations are needed since teh declaration of KlassInfoTable and |
342 // KlassInfoClosure are guarded by #if INLCUDE_SERVICES | |
343 class KlassInfoTable; | |
344 class KlassInfoClosure; | |
345 | |
7956 | 346 class HeapInspection : public StackObj { |
347 bool _csv_format; // "comma separated values" format for spreadsheet. | |
348 bool _print_help; | |
349 bool _print_class_stats; | |
350 const char* _columns; | |
0 | 351 public: |
7956 | 352 HeapInspection(bool csv_format, bool print_help, |
353 bool print_class_stats, const char *columns) : | |
354 _csv_format(csv_format), _print_help(print_help), | |
355 _print_class_stats(print_class_stats), _columns(columns) {} | |
10405 | 356 void heap_inspection(outputStream* st) NOT_SERVICES_RETURN; |
357 size_t populate_table(KlassInfoTable* cit, BoolObjectClosure* filter = NULL) NOT_SERVICES_RETURN; | |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6725
diff
changeset
|
358 static void find_instances_at_safepoint(Klass* k, GrowableArray<oop>* result) NOT_SERVICES_RETURN; |
10405 | 359 private: |
360 void iterate_over_heap(KlassInfoTable* cit, BoolObjectClosure* filter = NULL); | |
0 | 361 }; |
1972 | 362 |
363 #endif // SHARE_VM_MEMORY_HEAPINSPECTION_HPP |