Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolKlass.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 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2006 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 // A constantPoolKlass is the klass of a constantPoolOop | |
| 26 | |
|
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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diff
changeset
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27 class constantPoolKlass : public Klass { |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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diff
changeset
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28 juint _alloc_size; // allocation profiling support |
| 0 | 29 public: |
| 30 // Dispatched klass operations | |
| 31 bool oop_is_constantPool() const { return true; } | |
| 32 int oop_size(oop obj) const; | |
| 33 int klass_oop_size() const { return object_size(); } | |
| 34 | |
| 35 // Allocation | |
| 36 DEFINE_ALLOCATE_PERMANENT(constantPoolKlass); | |
| 37 constantPoolOop allocate(int length, TRAPS); | |
| 38 static klassOop create_klass(TRAPS); | |
| 39 | |
| 40 // Casting from klassOop | |
| 41 static constantPoolKlass* cast(klassOop k) { | |
| 42 assert(k->klass_part()->oop_is_constantPool(), "cast to constantPoolKlass"); | |
| 43 return (constantPoolKlass*) k->klass_part(); | |
| 44 } | |
| 45 | |
| 46 // Sizing | |
| 47 static int header_size() { return oopDesc::header_size() + sizeof(constantPoolKlass)/HeapWordSize; } | |
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113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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changeset
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48 int object_size() const { return align_object_size(header_size()); } |
| 0 | 49 |
| 50 // Garbage collection | |
| 51 void oop_follow_contents(oop obj); | |
| 52 int oop_adjust_pointers(oop obj); | |
| 53 | |
| 54 // Parallel Scavenge and Parallel Old | |
| 55 PARALLEL_GC_DECLS | |
| 56 | |
| 57 // Iterators | |
| 58 int oop_oop_iterate(oop obj, OopClosure* blk); | |
| 59 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
| 60 | |
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113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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changeset
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61 // Allocation profiling support |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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diff
changeset
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62 // no idea why this is pure virtual and not in Klass ??? |
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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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63 juint alloc_size() const { return _alloc_size; } |
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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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64 void set_alloc_size(juint n) { _alloc_size = n; } |
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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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65 |
| 0 | 66 #ifndef PRODUCT |
| 67 public: | |
| 68 // Printing | |
| 69 void oop_print_on(oop obj, outputStream* st); | |
| 70 #endif | |
| 71 | |
| 72 public: | |
| 73 // Verification | |
| 74 const char* internal_name() const; | |
| 75 void oop_verify_on(oop obj, outputStream* st); | |
| 76 // tells whether obj is partially constructed (gc during class loading) | |
| 77 bool oop_partially_loaded(oop obj) const; | |
| 78 void oop_set_partially_loaded(oop obj); | |
| 79 #ifndef PRODUCT | |
| 80 // Compile the world support | |
| 81 static void preload_and_initialize_all_classes(oop constant_pool, TRAPS); | |
| 82 #endif | |
| 83 }; |