Mercurial > hg > truffle
annotate src/share/vm/oops/objArrayKlass.hpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 37f87013dfd8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // objArrayKlass is the klass for objArrays | |
| 26 | |
| 27 class objArrayKlass : public arrayKlass { | |
| 28 friend class VMStructs; | |
| 29 private: | |
| 30 klassOop _element_klass; // The klass of the elements of this array type | |
| 31 klassOop _bottom_klass; // The one-dimensional type (instanceKlass or typeArrayKlass) | |
| 32 public: | |
| 33 // Instance variables | |
| 34 klassOop element_klass() const { return _element_klass; } | |
| 35 void set_element_klass(klassOop k) { oop_store_without_check((oop*) &_element_klass, (oop) k); } | |
| 36 oop* element_klass_addr() { return (oop*)&_element_klass; } | |
| 37 | |
| 38 klassOop bottom_klass() const { return _bottom_klass; } | |
| 39 void set_bottom_klass(klassOop k) { oop_store_without_check((oop*) &_bottom_klass, (oop) k); } | |
| 40 oop* bottom_klass_addr() { return (oop*)&_bottom_klass; } | |
| 41 | |
| 42 // Compiler/Interpreter offset | |
| 43 static int element_klass_offset_in_bytes() { return offset_of(objArrayKlass, _element_klass); } | |
| 44 | |
| 45 // Dispatched operation | |
| 46 bool can_be_primary_super_slow() const; | |
| 47 objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS); | |
| 48 bool compute_is_subtype_of(klassOop k); | |
| 49 bool oop_is_objArray_slow() const { return true; } | |
| 50 int oop_size(oop obj) const; | |
| 51 int klass_oop_size() const { return object_size(); } | |
| 52 | |
| 53 // Allocation | |
| 54 DEFINE_ALLOCATE_PERMANENT(objArrayKlass); | |
| 55 objArrayOop allocate(int length, TRAPS); | |
| 56 oop multi_allocate(int rank, jint* sizes, TRAPS); | |
| 57 | |
| 58 // Copying | |
| 59 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS); | |
| 60 | |
| 61 // Compute protection domain | |
| 62 oop protection_domain() { return Klass::cast(bottom_klass())->protection_domain(); } | |
| 63 // Compute class loader | |
| 64 oop class_loader() const { return Klass::cast(bottom_klass())->class_loader(); } | |
| 65 | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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66 private: |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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67 // Either oop or narrowOop depending on UseCompressedOops. |
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68 // must be called from within objArrayKlass.cpp |
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69 template <class T> void do_copy(arrayOop s, T* src, arrayOop d, |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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70 T* dst, int length, TRAPS); |
| 0 | 71 protected: |
| 72 // Returns the objArrayKlass for n'th dimension. | |
| 73 virtual klassOop array_klass_impl(bool or_null, int n, TRAPS); | |
| 74 | |
| 75 // Returns the array class with this class as element type. | |
| 76 virtual klassOop array_klass_impl(bool or_null, TRAPS); | |
| 77 | |
| 78 public: | |
| 79 // Casting from klassOop | |
| 80 static objArrayKlass* cast(klassOop k) { | |
| 81 assert(k->klass_part()->oop_is_objArray_slow(), "cast to objArrayKlass"); | |
| 82 return (objArrayKlass*) k->klass_part(); | |
| 83 } | |
| 84 | |
| 85 // Sizing | |
| 86 static int header_size() { return oopDesc::header_size() + sizeof(objArrayKlass)/HeapWordSize; } | |
| 87 int object_size() const { return arrayKlass::object_size(header_size()); } | |
| 88 | |
| 89 // Initialization (virtual from Klass) | |
| 90 void initialize(TRAPS); | |
| 91 | |
| 92 // Garbage collection | |
| 93 void oop_follow_contents(oop obj); | |
| 94 int oop_adjust_pointers(oop obj); | |
| 95 | |
| 96 // Parallel Scavenge and Parallel Old | |
| 97 PARALLEL_GC_DECLS | |
| 98 | |
| 99 // Iterators | |
| 100 int oop_oop_iterate(oop obj, OopClosure* blk) { | |
| 101 return oop_oop_iterate_v(obj, blk); | |
| 102 } | |
| 103 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
| 104 return oop_oop_iterate_v_m(obj, blk, mr); | |
| 105 } | |
| 106 #define ObjArrayKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ | |
| 107 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ | |
| 108 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \ | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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109 MemRegion mr); \ |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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110 int oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* blk, \ |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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111 int start, int end); |
| 0 | 112 |
| 113 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DECL) | |
| 114 ALL_OOP_OOP_ITERATE_CLOSURES_3(ObjArrayKlass_OOP_OOP_ITERATE_DECL) | |
| 115 | |
| 116 // JVM support | |
| 117 jint compute_modifier_flags(TRAPS) const; | |
| 118 | |
| 119 private: | |
| 120 static klassOop array_klass_impl (objArrayKlassHandle this_oop, bool or_null, int n, TRAPS); | |
| 121 | |
| 122 #ifndef PRODUCT | |
| 123 public: | |
| 124 // Printing | |
| 125 void oop_print_on (oop obj, outputStream* st); | |
| 126 void oop_print_value_on(oop obj, outputStream* st); | |
| 127 #endif | |
| 128 | |
| 129 public: | |
| 130 // Verification | |
| 131 const char* internal_name() const; | |
| 132 void oop_verify_on(oop obj, outputStream* st); | |
| 133 void oop_verify_old_oop(oop obj, oop* p, bool allow_dirty); | |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
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134 void oop_verify_old_oop(oop obj, narrowOop* p, bool allow_dirty); |
| 0 | 135 |
| 136 }; |