Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp @ 4982:38012b8c29b1
create separate RUNTIME1_STUBS definition for non-graal build.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 27 Feb 2012 22:18:57 +0100 |
parents | f08d439fab8c |
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 } |