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annotate src/share/vm/gc_implementation/parNew/parOopClosures.inline.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | fc2b798ab316 |
| rev | line source |
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| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2007, 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_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_INLINE_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_INLINE_HPP | |
| 27 | |
| 28 #include "gc_implementation/parNew/parNewGeneration.hpp" | |
| 29 #include "gc_implementation/parNew/parOopClosures.hpp" | |
| 30 #include "memory/cardTableRS.hpp" | |
| 31 | |
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32 template <class T> inline void ParScanWeakRefClosure::do_oop_work(T* p) { |
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33 assert (!oopDesc::is_null(*p), "null weak reference?"); |
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34 oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
| 0 | 35 // weak references are sometimes scanned twice; must check |
| 36 // that to-space doesn't already contain this object | |
| 37 if ((HeapWord*)obj < _boundary && !_g->to()->is_in_reserved(obj)) { | |
| 38 // we need to ensure that it is copied (see comment in | |
| 39 // ParScanClosure::do_oop_work). | |
| 40 klassOop objK = obj->klass(); | |
| 41 markOop m = obj->mark(); | |
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42 oop new_obj; |
| 0 | 43 if (m->is_marked()) { // Contains forwarding pointer. |
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44 new_obj = ParNewGeneration::real_forwardee(obj); |
| 0 | 45 } else { |
| 46 size_t obj_sz = obj->size_given_klass(objK->klass_part()); | |
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47 new_obj = ((ParNewGeneration*)_g)->copy_to_survivor_space(_par_scan_state, |
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48 obj, obj_sz, m); |
| 0 | 49 } |
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50 oopDesc::encode_store_heap_oop_not_null(p, new_obj); |
| 0 | 51 } |
| 52 } | |
| 53 | |
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54 inline void ParScanWeakRefClosure::do_oop_nv(oop* p) { ParScanWeakRefClosure::do_oop_work(p); } |
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55 inline void ParScanWeakRefClosure::do_oop_nv(narrowOop* p) { ParScanWeakRefClosure::do_oop_work(p); } |
| 0 | 56 |
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57 template <class T> inline void ParScanClosure::par_do_barrier(T* p) { |
| 0 | 58 assert(generation()->is_in_reserved(p), "expected ref in generation"); |
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59 assert(!oopDesc::is_null(*p), "expected non-null object"); |
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60 oop obj = oopDesc::load_decode_heap_oop_not_null(p); |
| 0 | 61 // If p points to a younger generation, mark the card. |
| 62 if ((HeapWord*)obj < gen_boundary()) { | |
| 63 rs()->write_ref_field_gc_par(p, obj); | |
| 64 } | |
| 65 } | |
| 66 | |
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67 template <class T> |
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68 inline void ParScanClosure::do_oop_work(T* p, |
| 0 | 69 bool gc_barrier, |
| 70 bool root_scan) { | |
| 71 assert((!Universe::heap()->is_in_reserved(p) || | |
| 72 generation()->is_in_reserved(p)) | |
| 73 && (generation()->level() == 0 || gc_barrier), | |
| 74 "The gen must be right, and we must be doing the barrier " | |
| 75 "in older generations."); | |
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76 T heap_oop = oopDesc::load_heap_oop(p); |
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77 if (!oopDesc::is_null(heap_oop)) { |
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78 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
| 0 | 79 if ((HeapWord*)obj < _boundary) { |
| 80 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); | |
| 81 // OK, we need to ensure that it is copied. | |
| 82 // We read the klass and mark in this order, so that we can reliably | |
| 83 // get the size of the object: if the mark we read is not a | |
| 84 // forwarding pointer, then the klass is valid: the klass is only | |
| 85 // overwritten with an overflow next pointer after the object is | |
| 86 // forwarded. | |
| 87 klassOop objK = obj->klass(); | |
| 88 markOop m = obj->mark(); | |
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89 oop new_obj; |
| 0 | 90 if (m->is_marked()) { // Contains forwarding pointer. |
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91 new_obj = ParNewGeneration::real_forwardee(obj); |
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92 oopDesc::encode_store_heap_oop_not_null(p, new_obj); |
| 0 | 93 } else { |
| 94 size_t obj_sz = obj->size_given_klass(objK->klass_part()); | |
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95 new_obj = _g->copy_to_survivor_space(_par_scan_state, obj, obj_sz, m); |
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96 oopDesc::encode_store_heap_oop_not_null(p, new_obj); |
| 0 | 97 if (root_scan) { |
| 98 // This may have pushed an object. If we have a root | |
| 99 // category with a lot of roots, can't let the queue get too | |
| 100 // full: | |
| 101 (void)_par_scan_state->trim_queues(10 * ParallelGCThreads); | |
| 102 } | |
| 103 } | |
| 104 if (gc_barrier) { | |
| 105 // Now call parent closure | |
| 106 par_do_barrier(p); | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 } | |
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111 |
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112 inline void ParScanWithBarrierClosure::do_oop_nv(oop* p) { ParScanClosure::do_oop_work(p, true, false); } |
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113 inline void ParScanWithBarrierClosure::do_oop_nv(narrowOop* p) { ParScanClosure::do_oop_work(p, true, false); } |
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114 |
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115 inline void ParScanWithoutBarrierClosure::do_oop_nv(oop* p) { ParScanClosure::do_oop_work(p, false, false); } |
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116 inline void ParScanWithoutBarrierClosure::do_oop_nv(narrowOop* p) { ParScanClosure::do_oop_work(p, false, false); } |
| 1972 | 117 |
| 118 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_INLINE_HPP |