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annotate src/share/vm/memory/classify.cpp @ 4939:45a1bf98f1bb
7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
Reviewed-by: kvn, never
author | twisti |
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date | Mon, 13 Feb 2012 02:29:22 -0800 |
parents | 1d1603768966 |
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rev | line source |
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0 | 1 /* |
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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "memory/classify.hpp" | |
0 | 28 |
29 | |
30 const char* ClassifyObjectClosure::object_type_name[number_object_types] = { | |
31 "unknown", | |
32 "instance", | |
33 "instanceRef", | |
34 "objArray", | |
35 "symbol", | |
36 "klass", | |
37 "instanceKlass", | |
38 "method", | |
39 "constMethod", | |
40 "methodData", | |
41 "constantPool", | |
42 "constantPoolCache", | |
43 "typeArray", | |
44 "compiledICHolder" | |
45 }; | |
46 | |
47 | |
48 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) { | |
49 object_type type = unknown_type; | |
50 | |
51 Klass* k = obj->blueprint(); | |
52 | |
1142 | 53 if (k->as_klassOop() == SystemDictionary::Object_klass()) { |
0 | 54 tty->print_cr("Found the class!"); |
55 } | |
56 | |
57 if (count) { | |
58 k->set_alloc_count(k->alloc_count() + 1); | |
59 } | |
60 | |
61 if (obj->is_instance()) { | |
62 if (k->oop_is_instanceRef()) { | |
63 type = instanceRef_type; | |
64 } else { | |
65 type = instance_type; | |
66 } | |
67 } else if (obj->is_typeArray()) { | |
68 type = typeArray_type; | |
69 } else if (obj->is_objArray()) { | |
70 type = objArray_type; | |
71 } else if (obj->is_klass()) { | |
72 Klass* k = ((klassOop)obj)->klass_part(); | |
73 if (k->oop_is_instance()) { | |
74 type = instanceKlass_type; | |
75 } else { | |
76 type = klass_type; | |
77 } | |
78 } else if (obj->is_method()) { | |
79 type = method_type; | |
80 } else if (obj->is_constMethod()) { | |
81 type = constMethod_type; | |
82 } else if (obj->is_methodData()) { | |
83 ShouldNotReachHere(); | |
84 } else if (obj->is_constantPool()) { | |
85 type = constantPool_type; | |
86 } else if (obj->is_constantPoolCache()) { | |
87 type = constantPoolCache_type; | |
88 } else if (obj->is_compiledICHolder()) { | |
89 type = compiledICHolder_type; | |
90 } else { | |
91 ShouldNotReachHere(); | |
92 } | |
93 | |
94 assert(type != unknown_type, "found object of unknown type."); | |
95 return type; | |
96 } | |
97 | |
98 | |
99 void ClassifyObjectClosure::reset() { | |
100 for (int i = 0; i < number_object_types; ++i) { | |
101 object_count[i] = 0; | |
102 object_size[i] = 0; | |
103 } | |
104 total_object_count = 0; | |
105 total_object_size = 0; | |
106 } | |
107 | |
108 | |
109 void ClassifyObjectClosure::do_object(oop obj) { | |
110 int i = classify_object(obj, true); | |
111 ++object_count[i]; | |
112 ++total_object_count; | |
113 size_t size = obj->size() * HeapWordSize; | |
114 object_size[i] += size; | |
115 total_object_size += size; | |
116 } | |
117 | |
118 | |
119 size_t ClassifyObjectClosure::print() { | |
120 int num_objects = 0; | |
121 size_t size_objects = 0; | |
122 for (int i = 0; i < number_object_types; ++i) { | |
123 if (object_count[i] != 0) { | |
124 tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)", | |
125 object_count[i], object_type_name[i], object_size[i], | |
126 (float)object_size[i]/(float)object_count[i]); | |
127 } | |
128 num_objects += object_count[i]; | |
129 size_objects += object_size[i]; | |
130 } | |
131 assert(num_objects == total_object_count, "Object count mismatch!"); | |
132 assert(size_objects == total_object_size, "Object size mismatch!"); | |
133 | |
134 tty->print_cr(" Total: %d objects, %d bytes", total_object_count, | |
135 total_object_size); | |
136 return total_object_size; | |
137 } | |
138 | |
139 | |
140 void ClassifyInstanceKlassClosure::do_object(oop obj) { | |
141 int type = classify_object(obj, false); | |
142 if (type == instanceKlass_type || type == klass_type) { | |
143 Klass* k = ((klassOop)obj)->klass_part(); | |
144 if (k->alloc_count() > 0) { | |
145 ResourceMark rm; | |
146 const char *name; | |
147 if (k->name() == NULL) { | |
148 | |
149 if (obj == Universe::klassKlassObj()) { | |
150 name = "_klassKlassObj"; | |
151 } else if (obj == Universe::arrayKlassKlassObj()) { | |
152 name = "_arrayKlassKlassObj"; | |
153 } else if (obj == Universe::objArrayKlassKlassObj()) { | |
154 name = "_objArrayKlassKlassObj"; | |
155 } else if (obj == Universe::typeArrayKlassKlassObj()) { | |
156 name = "_typeArrayKlassKlassObj"; | |
157 } else if (obj == Universe::instanceKlassKlassObj()) { | |
158 name = "_instanceKlassKlassObj"; | |
159 } else if (obj == Universe::methodKlassObj()) { | |
160 name = "_methodKlassObj"; | |
161 } else if (obj == Universe::constMethodKlassObj()) { | |
162 name = "_constMethodKlassObj"; | |
163 } else if (obj == Universe::constantPoolKlassObj()) { | |
164 name = "_constantPoolKlassObj"; | |
165 } else if (obj == Universe::constantPoolCacheKlassObj()) { | |
166 name = "_constantPoolCacheKlassObj"; | |
167 } else if (obj == Universe::compiledICHolderKlassObj()) { | |
168 name = "_compiledICHolderKlassObj"; | |
169 } else if (obj == Universe::systemObjArrayKlassObj()) { | |
170 name = "_systemObjArrayKlassObj"; | |
171 } else { | |
172 name = "[unnamed]"; | |
173 } | |
174 } else { | |
175 name = k->external_name(); | |
176 } | |
177 tty->print_cr("% 8d instances of %s", k->alloc_count(), name); | |
178 } | |
179 total_instances += k->alloc_count(); | |
180 } | |
181 } | |
182 | |
183 | |
184 void ClassifyInstanceKlassClosure::print() { | |
185 tty->print_cr(" Total instances: %d.", total_instances); | |
186 } | |
187 | |
188 | |
189 void ClassifyInstanceKlassClosure::reset() { | |
190 total_instances = 0; | |
191 } |