Mercurial > hg > graal-jvmci-8
annotate src/share/vm/memory/classify.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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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 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_classify.cpp.incl" | |
27 | |
28 | |
29 const char* ClassifyObjectClosure::object_type_name[number_object_types] = { | |
30 "unknown", | |
31 "instance", | |
32 "instanceRef", | |
33 "objArray", | |
34 "symbol", | |
35 "klass", | |
36 "instanceKlass", | |
37 "method", | |
38 "constMethod", | |
39 "methodData", | |
40 "constantPool", | |
41 "constantPoolCache", | |
42 "typeArray", | |
43 "compiledICHolder" | |
44 }; | |
45 | |
46 | |
47 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) { | |
48 object_type type = unknown_type; | |
49 | |
50 Klass* k = obj->blueprint(); | |
51 | |
1142 | 52 if (k->as_klassOop() == SystemDictionary::Object_klass()) { |
0 | 53 tty->print_cr("Found the class!"); |
54 } | |
55 | |
56 if (count) { | |
57 k->set_alloc_count(k->alloc_count() + 1); | |
58 } | |
59 | |
60 if (obj->is_instance()) { | |
61 if (k->oop_is_instanceRef()) { | |
62 type = instanceRef_type; | |
63 } else { | |
64 type = instance_type; | |
65 } | |
66 } else if (obj->is_typeArray()) { | |
67 type = typeArray_type; | |
68 } else if (obj->is_objArray()) { | |
69 type = objArray_type; | |
70 } else if (obj->is_symbol()) { | |
71 type = symbol_type; | |
72 } else if (obj->is_klass()) { | |
73 Klass* k = ((klassOop)obj)->klass_part(); | |
74 if (k->oop_is_instance()) { | |
75 type = instanceKlass_type; | |
76 } else { | |
77 type = klass_type; | |
78 } | |
79 } else if (obj->is_method()) { | |
80 type = method_type; | |
81 } else if (obj->is_constMethod()) { | |
82 type = constMethod_type; | |
83 } else if (obj->is_methodData()) { | |
84 ShouldNotReachHere(); | |
85 } else if (obj->is_constantPool()) { | |
86 type = constantPool_type; | |
87 } else if (obj->is_constantPoolCache()) { | |
88 type = constantPoolCache_type; | |
89 } else if (obj->is_compiledICHolder()) { | |
90 type = compiledICHolder_type; | |
91 } else { | |
92 ShouldNotReachHere(); | |
93 } | |
94 | |
95 assert(type != unknown_type, "found object of unknown type."); | |
96 return type; | |
97 } | |
98 | |
99 | |
100 void ClassifyObjectClosure::reset() { | |
101 for (int i = 0; i < number_object_types; ++i) { | |
102 object_count[i] = 0; | |
103 object_size[i] = 0; | |
104 } | |
105 total_object_count = 0; | |
106 total_object_size = 0; | |
107 } | |
108 | |
109 | |
110 void ClassifyObjectClosure::do_object(oop obj) { | |
111 int i = classify_object(obj, true); | |
112 ++object_count[i]; | |
113 ++total_object_count; | |
114 size_t size = obj->size() * HeapWordSize; | |
115 object_size[i] += size; | |
116 total_object_size += size; | |
117 } | |
118 | |
119 | |
120 size_t ClassifyObjectClosure::print() { | |
121 int num_objects = 0; | |
122 size_t size_objects = 0; | |
123 for (int i = 0; i < number_object_types; ++i) { | |
124 if (object_count[i] != 0) { | |
125 tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)", | |
126 object_count[i], object_type_name[i], object_size[i], | |
127 (float)object_size[i]/(float)object_count[i]); | |
128 } | |
129 num_objects += object_count[i]; | |
130 size_objects += object_size[i]; | |
131 } | |
132 assert(num_objects == total_object_count, "Object count mismatch!"); | |
133 assert(size_objects == total_object_size, "Object size mismatch!"); | |
134 | |
135 tty->print_cr(" Total: %d objects, %d bytes", total_object_count, | |
136 total_object_size); | |
137 return total_object_size; | |
138 } | |
139 | |
140 | |
141 void ClassifyInstanceKlassClosure::do_object(oop obj) { | |
142 int type = classify_object(obj, false); | |
143 if (type == instanceKlass_type || type == klass_type) { | |
144 Klass* k = ((klassOop)obj)->klass_part(); | |
145 if (k->alloc_count() > 0) { | |
146 ResourceMark rm; | |
147 const char *name; | |
148 if (k->name() == NULL) { | |
149 | |
150 if (obj == Universe::klassKlassObj()) { | |
151 name = "_klassKlassObj"; | |
152 } else if (obj == Universe::arrayKlassKlassObj()) { | |
153 name = "_arrayKlassKlassObj"; | |
154 } else if (obj == Universe::objArrayKlassKlassObj()) { | |
155 name = "_objArrayKlassKlassObj"; | |
156 } else if (obj == Universe::typeArrayKlassKlassObj()) { | |
157 name = "_typeArrayKlassKlassObj"; | |
158 } else if (obj == Universe::instanceKlassKlassObj()) { | |
159 name = "_instanceKlassKlassObj"; | |
160 } else if (obj == Universe::symbolKlassObj()) { | |
161 name = "_symbolKlassObj"; | |
162 } else if (obj == Universe::methodKlassObj()) { | |
163 name = "_methodKlassObj"; | |
164 } else if (obj == Universe::constMethodKlassObj()) { | |
165 name = "_constMethodKlassObj"; | |
166 } else if (obj == Universe::constantPoolKlassObj()) { | |
167 name = "_constantPoolKlassObj"; | |
168 } else if (obj == Universe::constantPoolCacheKlassObj()) { | |
169 name = "_constantPoolCacheKlassObj"; | |
170 } else if (obj == Universe::compiledICHolderKlassObj()) { | |
171 name = "_compiledICHolderKlassObj"; | |
172 } else if (obj == Universe::systemObjArrayKlassObj()) { | |
173 name = "_systemObjArrayKlassObj"; | |
174 } else { | |
175 name = "[unnamed]"; | |
176 } | |
177 } else { | |
178 name = k->external_name(); | |
179 } | |
180 tty->print_cr("% 8d instances of %s", k->alloc_count(), name); | |
181 } | |
182 total_instances += k->alloc_count(); | |
183 } | |
184 } | |
185 | |
186 | |
187 void ClassifyInstanceKlassClosure::print() { | |
188 tty->print_cr(" Total instances: %d.", total_instances); | |
189 } | |
190 | |
191 | |
192 void ClassifyInstanceKlassClosure::reset() { | |
193 total_instances = 0; | |
194 } |