Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp @ 12316:190899198332
7195622: CheckUnhandledOops has limited usefulness now
Summary: Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.
Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
Contributed-by: lois.foltan@oracle.com
| author | hseigel |
|---|---|
| date | Thu, 26 Sep 2013 10:25:02 -0400 |
| parents | b30744960351 |
| children | 798522662fcd |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
| 342 | 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. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" | |
| 27 #include "gc_implementation/g1/heapRegion.hpp" | |
| 28 #include "gc_implementation/g1/satbQueue.hpp" | |
| 29 #include "runtime/mutexLocker.hpp" | |
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30 #include "runtime/thread.inline.hpp" |
| 342 | 31 |
| 32 G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap, | |
| 33 int max_covered_regions) : | |
| 34 CardTableModRefBSForCTRS(whole_heap, max_covered_regions) | |
| 35 { | |
| 36 _kind = G1SATBCT; | |
| 37 } | |
| 38 | |
| 39 | |
| 40 void G1SATBCardTableModRefBS::enqueue(oop pre_val) { | |
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41 // Nulls should have been already filtered. |
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42 assert(pre_val->is_oop(true), "Error"); |
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43 |
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44 if (!JavaThread::satb_mark_queue_set().is_active()) return; |
| 342 | 45 Thread* thr = Thread::current(); |
| 46 if (thr->is_Java_thread()) { | |
| 47 JavaThread* jt = (JavaThread*)thr; | |
| 48 jt->satb_mark_queue().enqueue(pre_val); | |
| 49 } else { | |
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50 MutexLockerEx x(Shared_SATB_Q_lock, Mutex::_no_safepoint_check_flag); |
| 342 | 51 JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val); |
| 52 } | |
| 53 } | |
| 54 | |
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55 template <class T> void |
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56 G1SATBCardTableModRefBS::write_ref_array_pre_work(T* dst, int count) { |
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57 if (!JavaThread::satb_mark_queue_set().is_active()) return; |
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58 T* elem_ptr = dst; |
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59 for (int i = 0; i < count; i++, elem_ptr++) { |
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60 T heap_oop = oopDesc::load_heap_oop(elem_ptr); |
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61 if (!oopDesc::is_null(heap_oop)) { |
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62 enqueue(oopDesc::decode_heap_oop_not_null(heap_oop)); |
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63 } |
| 342 | 64 } |
| 65 } | |
| 66 | |
| 67 G1SATBCardTableLoggingModRefBS:: | |
| 68 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap, | |
| 69 int max_covered_regions) : | |
| 70 G1SATBCardTableModRefBS(whole_heap, max_covered_regions), | |
| 71 _dcqs(JavaThread::dirty_card_queue_set()) | |
| 72 { | |
| 73 _kind = G1SATBCTLogging; | |
| 74 } | |
| 75 | |
| 76 void | |
| 77 G1SATBCardTableLoggingModRefBS::write_ref_field_work(void* field, | |
| 78 oop new_val) { | |
| 79 jbyte* byte = byte_for(field); | |
| 80 if (*byte != dirty_card) { | |
| 81 *byte = dirty_card; | |
| 82 Thread* thr = Thread::current(); | |
| 83 if (thr->is_Java_thread()) { | |
| 84 JavaThread* jt = (JavaThread*)thr; | |
| 85 jt->dirty_card_queue().enqueue(byte); | |
| 86 } else { | |
| 87 MutexLockerEx x(Shared_DirtyCardQ_lock, | |
| 88 Mutex::_no_safepoint_check_flag); | |
| 89 _dcqs.shared_dirty_card_queue()->enqueue(byte); | |
| 90 } | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 void | |
| 95 G1SATBCardTableLoggingModRefBS::write_ref_field_static(void* field, | |
| 96 oop new_val) { | |
| 97 uintptr_t field_uint = (uintptr_t)field; | |
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98 uintptr_t new_val_uint = cast_from_oop<uintptr_t>(new_val); |
| 342 | 99 uintptr_t comb = field_uint ^ new_val_uint; |
| 100 comb = comb >> HeapRegion::LogOfHRGrainBytes; | |
| 101 if (comb == 0) return; | |
| 102 if (new_val == NULL) return; | |
| 103 // Otherwise, log it. | |
| 104 G1SATBCardTableLoggingModRefBS* g1_bs = | |
| 105 (G1SATBCardTableLoggingModRefBS*)Universe::heap()->barrier_set(); | |
| 106 g1_bs->write_ref_field_work(field, new_val); | |
| 107 } | |
| 108 | |
| 109 void | |
| 110 G1SATBCardTableLoggingModRefBS::invalidate(MemRegion mr, bool whole_heap) { | |
| 111 jbyte* byte = byte_for(mr.start()); | |
| 112 jbyte* last_byte = byte_for(mr.last()); | |
| 113 Thread* thr = Thread::current(); | |
| 114 if (whole_heap) { | |
| 115 while (byte <= last_byte) { | |
| 116 *byte = dirty_card; | |
| 117 byte++; | |
| 118 } | |
| 119 } else { | |
| 120 // Enqueue if necessary. | |
| 121 if (thr->is_Java_thread()) { | |
| 122 JavaThread* jt = (JavaThread*)thr; | |
| 123 while (byte <= last_byte) { | |
| 124 if (*byte != dirty_card) { | |
| 125 *byte = dirty_card; | |
| 126 jt->dirty_card_queue().enqueue(byte); | |
| 127 } | |
| 128 byte++; | |
| 129 } | |
| 130 } else { | |
| 131 MutexLockerEx x(Shared_DirtyCardQ_lock, | |
| 132 Mutex::_no_safepoint_check_flag); | |
| 133 while (byte <= last_byte) { | |
| 134 if (*byte != dirty_card) { | |
| 135 *byte = dirty_card; | |
| 136 _dcqs.shared_dirty_card_queue()->enqueue(byte); | |
| 137 } | |
| 138 byte++; | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 } |