Thu, 26 Jun 2014 11:36:58 +0200
8047818: G1 HeapRegions can no longer be ContiguousSpaces
Summary: Change parent of G1OffsetTableContigSpace to CompactibleSpace, reimplement missing functionality
Reviewed-by: stefank, jmasa, tschatzl
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * accompanied this code).
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/systemDictionary.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "gc_interface/collectedHeap.inline.hpp"
31 #include "memory/oopFactory.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "memory/universe.inline.hpp"
34 #include "oops/instanceKlass.hpp"
35 #include "oops/instanceOop.hpp"
36 #include "oops/objArrayOop.hpp"
37 #include "oops/oop.inline.hpp"
40 typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
41 int length = utf8_str == NULL ? 0 : UTF8::unicode_length(utf8_str);
42 typeArrayOop result = new_charArray(length, CHECK_NULL);
43 if (length > 0) {
44 UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
45 }
46 return result;
47 }
49 typeArrayOop oopFactory::new_tenured_charArray(int length, TRAPS) {
50 return TypeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD);
51 }
53 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
54 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
55 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
56 typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
57 return result;
58 }
60 // Create a Java array that points to metadata.
61 // As far as Java code is concerned, a metaData array is either an array of
62 // int or long depending on pointer size. Only a few things use this, like
63 // stack trace elements in Throwable. They cast Method* into this type.
64 // Note:can't point to symbols because there's no way to unreference count
65 // them when this object goes away.
66 typeArrayOop oopFactory::new_metaDataArray(int length, TRAPS) {
67 BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
68 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
69 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
70 typeArrayOop result = type_asArrayKlass->allocate_common(length, true, THREAD);
71 return result;
72 }
74 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
75 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
76 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
77 typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD);
78 return result;
79 }
82 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
83 assert(klass->is_klass(), "must be instance class");
84 if (klass->oop_is_array()) {
85 return ((ArrayKlass*)klass)->allocate_arrayArray(1, length, THREAD);
86 } else {
87 assert (klass->oop_is_instance(), "new object array with klass not an InstanceKlass");
88 return ((InstanceKlass*)klass)->allocate_objArray(1, length, THREAD);
89 }
90 }