Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 677:96b229c54d1e
6543938: G1: remove the concept of popularity
Reviewed-by: iveresov, tonyp
| author | apetrusenko |
|---|---|
| date | Wed, 25 Mar 2009 13:10:54 -0700 |
| parents | 87fa6e083d82 |
| children | bd02caa94611 df6caf649ff7 |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 2 * Copyright 2001-2007 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 inline size_t G1RemSet::n_workers() { | |
| 26 if (_g1->workers() != NULL) { | |
| 27 return _g1->workers()->total_workers(); | |
| 28 } else { | |
| 29 return 1; | |
| 30 } | |
| 31 } | |
| 32 | |
| 33 inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, oop* p) { | |
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34 par_write_ref(from, p, 0); |
| 342 | 35 } |
| 36 | |
| 37 inline void HRInto_G1RemSet::write_ref(HeapRegion* from, oop* p) { | |
| 38 write_ref_nv(from, p); | |
| 39 } | |
| 40 | |
| 41 inline bool HRInto_G1RemSet::self_forwarded(oop obj) { | |
| 42 bool result = (obj->is_forwarded() && (obj->forwardee()== obj)); | |
| 43 return result; | |
| 44 } | |
| 45 | |
| 46 inline void HRInto_G1RemSet::par_write_ref(HeapRegion* from, oop* p, int tid) { | |
| 47 oop obj = *p; | |
| 48 #ifdef ASSERT | |
| 49 // can't do because of races | |
| 50 // assert(obj == NULL || obj->is_oop(), "expected an oop"); | |
| 51 | |
| 52 // Do the safe subset of is_oop | |
| 53 if (obj != NULL) { | |
| 54 #ifdef CHECK_UNHANDLED_OOPS | |
| 55 oopDesc* o = obj.obj(); | |
| 56 #else | |
| 57 oopDesc* o = obj; | |
| 58 #endif // CHECK_UNHANDLED_OOPS | |
| 59 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); | |
| 60 assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); | |
| 61 } | |
| 62 #endif // ASSERT | |
| 63 assert(from == NULL || from->is_in_reserved(p), | |
| 64 "p is not in from"); | |
| 65 HeapRegion* to = _g1->heap_region_containing(obj); | |
| 66 // The test below could be optimized by applying a bit op to to and from. | |
| 67 if (to != NULL && from != NULL && from != to) { | |
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68 // There is a tricky infinite loop if we keep pushing |
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69 // self forwarding pointers onto our _new_refs list. |
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70 // The _par_traversal_in_progress flag is true during the collection pause, |
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71 // false during the evacuation failure handing. |
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72 if (_par_traversal_in_progress && |
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73 to->in_collection_set() && !self_forwarded(obj)) { |
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74 _new_refs[tid]->push(p); |
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75 // Deferred updates to the Cset are either discarded (in the normal case), |
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76 // or processed (if an evacuation failure occurs) at the end |
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77 // of the collection. |
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78 // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do(). |
| 677 | 79 } else { |
| 342 | 80 #if G1_REM_SET_LOGGING |
| 81 gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS" | |
| 82 " for region [" PTR_FORMAT ", " PTR_FORMAT ")", | |
| 83 p, obj, | |
| 84 to->bottom(), to->end()); | |
| 85 #endif | |
| 86 assert(to->rem_set() != NULL, "Need per-region 'into' remsets."); | |
| 677 | 87 to->rem_set()->add_reference(p, tid); |
| 342 | 88 } |
| 89 } | |
| 90 } | |
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91 |
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92 inline void UpdateRSOopClosure::do_oop(narrowOop* p) { |
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93 guarantee(false, "NYI"); |
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94 } |
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95 |
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96 inline void UpdateRSOopClosure::do_oop(oop* p) { |
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97 assert(_from != NULL, "from region must be non-NULL"); |
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98 _rs->par_write_ref(_from, p, _worker_i); |
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99 } |