Mercurial > hg > truffle
annotate src/share/vm/oops/typeArrayKlass.hpp @ 6123:2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
Summary: Eliminate constMethod's _method backpointer to methodOop, and move the _constant field from methodOop to constMethod.
Reviewed-by: roland, bdelsart, kamg
| author | jiangli |
|---|---|
| date | Wed, 06 Jun 2012 14:33:43 -0400 |
| parents | a92cdbac8b9e |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, 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 * | |
|
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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 #ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |
| 26 #define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP | |
| 27 | |
| 28 #include "oops/arrayKlass.hpp" | |
| 29 | |
| 0 | 30 // A typeArrayKlass is the klass of a typeArray |
| 31 // It contains the type and size of the elements | |
| 32 | |
| 33 class typeArrayKlass : public arrayKlass { | |
| 34 friend class VMStructs; | |
| 35 private: | |
| 36 jint _max_length; // maximum number of elements allowed in an array | |
| 37 public: | |
| 38 // instance variables | |
| 39 jint max_length() { return _max_length; } | |
| 40 void set_max_length(jint m) { _max_length = m; } | |
| 41 | |
| 42 // testers | |
| 43 bool oop_is_typeArray_slow() const { return true; } | |
| 44 | |
| 45 // klass allocation | |
| 46 DEFINE_ALLOCATE_PERMANENT(typeArrayKlass); | |
|
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47 static klassOop create_klass(BasicType type, int scale, const char* name_str, |
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48 TRAPS); |
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49 static inline klassOop create_klass(BasicType type, int scale, TRAPS) { |
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50 return create_klass(type, scale, external_name(type), CHECK_NULL); |
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51 } |
| 0 | 52 |
| 53 int oop_size(oop obj) const; | |
| 54 int klass_oop_size() const { return object_size(); } | |
| 55 | |
| 56 bool compute_is_subtype_of(klassOop k); | |
| 57 | |
| 58 // Allocation | |
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59 typeArrayOop allocate_common(int length, bool do_zero, TRAPS); |
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60 typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); } |
| 0 | 61 typeArrayOop allocate_permanent(int length, TRAPS); // used for class file structures |
| 62 oop multi_allocate(int rank, jint* sizes, TRAPS); | |
| 63 | |
| 64 // Copying | |
| 65 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); | |
| 66 | |
| 67 // Iteration | |
| 68 int oop_oop_iterate(oop obj, OopClosure* blk); | |
| 69 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
| 70 | |
| 71 // Garbage collection | |
| 72 void oop_follow_contents(oop obj); | |
| 73 int oop_adjust_pointers(oop obj); | |
| 74 | |
| 75 // Parallel Scavenge and Parallel Old | |
| 76 PARALLEL_GC_DECLS | |
| 77 | |
| 78 protected: | |
| 79 // Find n'th dimensional array | |
| 80 virtual klassOop array_klass_impl(bool or_null, int n, TRAPS); | |
| 81 | |
| 82 // Returns the array class with this class as element type | |
| 83 virtual klassOop array_klass_impl(bool or_null, TRAPS); | |
| 84 | |
| 85 public: | |
| 86 // Casting from klassOop | |
| 87 static typeArrayKlass* cast(klassOop k) { | |
| 88 assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass"); | |
| 89 return (typeArrayKlass*) k->klass_part(); | |
| 90 } | |
| 91 | |
| 92 // Naming | |
| 93 static const char* external_name(BasicType type); | |
| 94 | |
| 95 // Sizing | |
| 96 static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; } | |
| 97 int object_size() const { return arrayKlass::object_size(header_size()); } | |
| 98 | |
| 99 // Initialization (virtual from Klass) | |
| 100 void initialize(TRAPS); | |
| 101 | |
| 102 private: | |
| 103 // Helpers | |
| 104 static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS); | |
| 105 | |
| 106 #ifndef PRODUCT | |
| 107 public: | |
| 108 // Printing | |
| 109 void oop_print_on(oop obj, outputStream* st); | |
| 110 #endif | |
| 111 public: | |
| 112 const char* internal_name() const; | |
| 113 }; | |
| 1972 | 114 |
| 115 #endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP |