Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp @ 795:215f81b4d9b3
6841831: G1: assert(contains_reference(from),"We just added it!") fires
Summary: During parallel rset updating we have to make sure that the worker ids of the refinement threads do not intersect with the worker ids that can be claimed by the mutator threads.
Reviewed-by: tonyp
| author | iveresov |
|---|---|
| date | Mon, 18 May 2009 11:52:46 -0700 |
| parents | d1605aabd0a1 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2002-2008 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 inline void PSScavenge::save_to_space_top_before_gc() { | |
| 26 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
| 27 _to_space_top_before_gc = heap->young_gen()->to_space()->top(); | |
| 28 } | |
| 29 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
30 template <class T> inline bool PSScavenge::should_scavenge(T* p) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
31 T heap_oop = oopDesc::load_heap_oop(p); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
32 if (oopDesc::is_null(heap_oop)) return false; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
33 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
34 return PSScavenge::is_obj_in_young((HeapWord*)obj); |
| 0 | 35 } |
| 36 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
37 template <class T> |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
38 inline bool PSScavenge::should_scavenge(T* p, MutableSpace* to_space) { |
| 0 | 39 if (should_scavenge(p)) { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
40 oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
| 0 | 41 // Skip objects copied to to_space since the scavenge started. |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
42 HeapWord* const addr = (HeapWord*)obj; |
| 0 | 43 return addr < to_space_top_before_gc() || addr >= to_space->end(); |
| 44 } | |
| 45 return false; | |
| 46 } | |
| 47 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
48 template <class T> |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
49 inline bool PSScavenge::should_scavenge(T* p, bool check_to_space) { |
| 0 | 50 if (check_to_space) { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
51 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); |
| 0 | 52 return should_scavenge(p, heap->young_gen()->to_space()); |
| 53 } | |
| 54 return should_scavenge(p); | |
| 55 } | |
| 56 | |
| 57 // Attempt to "claim" oop at p via CAS, push the new obj if successful | |
| 58 // This version tests the oop* to make sure it is within the heap before | |
| 59 // attempting marking. | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
60 template <class T> |
| 0 | 61 inline void PSScavenge::copy_and_push_safe_barrier(PSPromotionManager* pm, |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
62 T* p) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
63 assert(should_scavenge(p, true), "revisiting object?"); |
| 0 | 64 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
65 oop o = oopDesc::load_decode_heap_oop_not_null(p); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
66 oop new_obj = o->is_forwarded() |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
67 ? o->forwardee() |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
68 : pm->copy_to_survivor_space(o, pm->depth_first()); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
69 oopDesc::encode_store_heap_oop_not_null(p, new_obj); |
| 0 | 70 |
| 71 // We cannot mark without test, as some code passes us pointers | |
| 72 // that are outside the heap. | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
73 if ((!PSScavenge::is_obj_in_young((HeapWord*)p)) && |
| 0 | 74 Universe::heap()->is_in_reserved(p)) { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
75 if (PSScavenge::is_obj_in_young((HeapWord*)new_obj)) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
76 card_table()->inline_write_ref_field_gc(p, new_obj); |
| 0 | 77 } |
| 78 } | |
| 79 } |