Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlassKlass.hpp @ 1091:6aa7255741f3
6906727: UseCompressedOops: some card-marking fixes related to object arrays
Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17).
Reviewed-by: kvn, coleenp, jmasa
| author | ysr |
|---|---|
| date | Thu, 03 Dec 2009 15:01:57 -0800 |
| parents | 89e0543e1737 |
| children | 4e6abf09f540 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 948 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
| 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 // An instanceKlassKlass is the klass of an instanceKlass | |
| 26 | |
| 27 class instanceKlassKlass : public klassKlass { | |
| 28 public: | |
| 29 // Dispatched operation | |
| 30 bool oop_is_klass() const { return true; } | |
| 31 bool oop_is_instanceKlass() const { return true; } | |
| 32 | |
| 33 int oop_size(oop obj) const; | |
| 34 int klass_oop_size() const { return object_size(); } | |
| 35 | |
| 36 // Allocation | |
| 37 DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass); | |
| 38 static klassOop create_klass(TRAPS); | |
| 39 klassOop allocate_instance_klass(int vtable_len, | |
| 40 int itable_len, | |
| 41 int static_field_size, | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
42 unsigned int nonstatic_oop_map_count, |
| 0 | 43 ReferenceType rt, |
| 44 TRAPS); | |
| 45 | |
| 46 // Casting from klassOop | |
| 47 static instanceKlassKlass* cast(klassOop k) { | |
| 48 assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass"); | |
| 49 return (instanceKlassKlass*) k->klass_part(); | |
| 50 } | |
| 51 | |
| 52 // Sizing | |
| 53 static int header_size() { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; } | |
| 54 int object_size() const { return align_object_size(header_size()); } | |
| 55 | |
| 56 // Garbage collection | |
| 57 void oop_follow_contents(oop obj); | |
| 58 int oop_adjust_pointers(oop obj); | |
| 59 bool oop_is_parsable(oop obj) const; | |
| 60 | |
| 61 // Parallel Scavenge and Parallel Old | |
| 62 PARALLEL_GC_DECLS | |
| 63 | |
| 64 // Iterators | |
| 65 int oop_oop_iterate(oop obj, OopClosure* blk); | |
| 66 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
| 67 | |
| 68 private: | |
| 69 // Apply closure to the InstanceKlass oops that are outside the java heap. | |
| 70 inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure); | |
| 71 | |
| 72 #ifndef PRODUCT | |
| 73 public: | |
| 74 // Printing | |
| 75 void oop_print_on(oop obj, outputStream* st); | |
| 76 void oop_print_value_on(oop obj, outputStream* st); | |
| 77 #endif | |
| 78 | |
| 79 public: | |
| 80 // Verification | |
| 81 const char* internal_name() const; | |
| 82 void oop_verify_on(oop obj, outputStream* st); | |
| 83 // tells whether obj is partially constructed (gc during class loading) | |
| 84 bool oop_partially_loaded(oop obj) const; | |
| 85 void oop_set_partially_loaded(oop obj); | |
| 86 }; |