Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
| author | never |
|---|---|
| date | Sun, 25 Sep 2011 16:03:29 -0700 |
| parents | e1162778c1c8 |
| children | f34d701e952e |
| rev | line source |
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| 342 | 1 /* |
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2 * Copyright (c) 2001, 2011, 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" | |
| 30 #include "runtime/thread.hpp" | |
| 31 #ifdef TARGET_OS_FAMILY_linux | |
| 32 # include "thread_linux.inline.hpp" | |
| 33 #endif | |
| 34 #ifdef TARGET_OS_FAMILY_solaris | |
| 35 # include "thread_solaris.inline.hpp" | |
| 36 #endif | |
| 37 #ifdef TARGET_OS_FAMILY_windows | |
| 38 # include "thread_windows.inline.hpp" | |
| 39 #endif | |
| 3960 | 40 #ifdef TARGET_OS_FAMILY_bsd |
| 41 # include "thread_bsd.inline.hpp" | |
| 42 #endif | |
| 342 | 43 |
| 44 G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap, | |
| 45 int max_covered_regions) : | |
| 46 CardTableModRefBSForCTRS(whole_heap, max_covered_regions) | |
| 47 { | |
| 48 _kind = G1SATBCT; | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void G1SATBCardTableModRefBS::enqueue(oop pre_val) { | |
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53 // Nulls should have been already filtered. |
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54 assert(pre_val->is_oop(true), "Error"); |
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55 |
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56 if (!JavaThread::satb_mark_queue_set().is_active()) return; |
| 342 | 57 Thread* thr = Thread::current(); |
| 58 if (thr->is_Java_thread()) { | |
| 59 JavaThread* jt = (JavaThread*)thr; | |
| 60 jt->satb_mark_queue().enqueue(pre_val); | |
| 61 } else { | |
| 62 MutexLocker x(Shared_SATB_Q_lock); | |
| 63 JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val); | |
| 64 } | |
| 65 } | |
| 66 | |
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67 template <class T> void |
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68 G1SATBCardTableModRefBS::write_ref_array_pre_work(T* dst, int count) { |
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69 if (!JavaThread::satb_mark_queue_set().is_active()) return; |
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70 T* elem_ptr = dst; |
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71 for (int i = 0; i < count; i++, elem_ptr++) { |
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72 T heap_oop = oopDesc::load_heap_oop(elem_ptr); |
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73 if (!oopDesc::is_null(heap_oop)) { |
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74 enqueue(oopDesc::decode_heap_oop_not_null(heap_oop)); |
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75 } |
| 342 | 76 } |
| 77 } | |
| 78 | |
| 79 G1SATBCardTableLoggingModRefBS:: | |
| 80 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap, | |
| 81 int max_covered_regions) : | |
| 82 G1SATBCardTableModRefBS(whole_heap, max_covered_regions), | |
| 83 _dcqs(JavaThread::dirty_card_queue_set()) | |
| 84 { | |
| 85 _kind = G1SATBCTLogging; | |
| 86 } | |
| 87 | |
| 88 void | |
| 89 G1SATBCardTableLoggingModRefBS::write_ref_field_work(void* field, | |
| 90 oop new_val) { | |
| 91 jbyte* byte = byte_for(field); | |
| 92 if (*byte != dirty_card) { | |
| 93 *byte = dirty_card; | |
| 94 Thread* thr = Thread::current(); | |
| 95 if (thr->is_Java_thread()) { | |
| 96 JavaThread* jt = (JavaThread*)thr; | |
| 97 jt->dirty_card_queue().enqueue(byte); | |
| 98 } else { | |
| 99 MutexLockerEx x(Shared_DirtyCardQ_lock, | |
| 100 Mutex::_no_safepoint_check_flag); | |
| 101 _dcqs.shared_dirty_card_queue()->enqueue(byte); | |
| 102 } | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 void | |
| 107 G1SATBCardTableLoggingModRefBS::write_ref_field_static(void* field, | |
| 108 oop new_val) { | |
| 109 uintptr_t field_uint = (uintptr_t)field; | |
| 110 uintptr_t new_val_uint = (uintptr_t)new_val; | |
| 111 uintptr_t comb = field_uint ^ new_val_uint; | |
| 112 comb = comb >> HeapRegion::LogOfHRGrainBytes; | |
| 113 if (comb == 0) return; | |
| 114 if (new_val == NULL) return; | |
| 115 // Otherwise, log it. | |
| 116 G1SATBCardTableLoggingModRefBS* g1_bs = | |
| 117 (G1SATBCardTableLoggingModRefBS*)Universe::heap()->barrier_set(); | |
| 118 g1_bs->write_ref_field_work(field, new_val); | |
| 119 } | |
| 120 | |
| 121 void | |
| 122 G1SATBCardTableLoggingModRefBS::invalidate(MemRegion mr, bool whole_heap) { | |
| 123 jbyte* byte = byte_for(mr.start()); | |
| 124 jbyte* last_byte = byte_for(mr.last()); | |
| 125 Thread* thr = Thread::current(); | |
| 126 if (whole_heap) { | |
| 127 while (byte <= last_byte) { | |
| 128 *byte = dirty_card; | |
| 129 byte++; | |
| 130 } | |
| 131 } else { | |
| 132 // Enqueue if necessary. | |
| 133 if (thr->is_Java_thread()) { | |
| 134 JavaThread* jt = (JavaThread*)thr; | |
| 135 while (byte <= last_byte) { | |
| 136 if (*byte != dirty_card) { | |
| 137 *byte = dirty_card; | |
| 138 jt->dirty_card_queue().enqueue(byte); | |
| 139 } | |
| 140 byte++; | |
| 141 } | |
| 142 } else { | |
| 143 MutexLockerEx x(Shared_DirtyCardQ_lock, | |
| 144 Mutex::_no_safepoint_check_flag); | |
| 145 while (byte <= last_byte) { | |
| 146 if (*byte != dirty_card) { | |
| 147 *byte = dirty_card; | |
| 148 _dcqs.shared_dirty_card_queue()->enqueue(byte); | |
| 149 } | |
| 150 byte++; | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 } |