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annotate src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp @ 5935:a735aec54ea4
7123170: JCK vm/jvmti/ResourceExhausted/resexh001/resexh00101/ tests fails since 7u4 b02
Summary: The JVMTI ResourceExhausted events must be generated in all places where OOME is thrown
Reviewed-by: acorn, coleenp, dcubed, dholmes, dsamersoff, jwilhelm, tonyp
Contributed-by: serguei.spitsyn@oracle.com
author | sspitsyn |
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date | Wed, 14 Mar 2012 20:06:48 -0700 |
parents | b4ebad3520bb |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2012, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP | |
27 | |
3771 | 28 #include "gc_implementation/g1/concurrentMark.inline.hpp" |
1972 | 29 #include "gc_implementation/g1/g1CollectedHeap.hpp" |
30 #include "gc_implementation/g1/g1OopClosures.hpp" | |
31 #include "gc_implementation/g1/g1RemSet.hpp" | |
32 | |
342 | 33 /* |
34 * This really ought to be an inline function, but apparently the C++ | |
35 * compiler sometimes sees fit to ignore inline declarations. Sigh. | |
36 */ | |
37 | |
38 // This must a ifdef'ed because the counting it controls is in a | |
39 // perf-critical inner loop. | |
40 #define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0 | |
41 | |
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42 template <class T> |
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43 inline void FilterIntoCSClosure::do_oop_nv(T* p) { |
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44 T heap_oop = oopDesc::load_heap_oop(p); |
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45 if (!oopDesc::is_null(heap_oop) && |
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46 _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) { |
342 | 47 _oc->do_oop(p); |
48 #if FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT | |
1705 | 49 if (_dcto_cl != NULL) |
50 _dcto_cl->incr_count(); | |
342 | 51 #endif |
52 } | |
53 } | |
54 | |
55 #define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0 | |
56 | |
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57 template <class T> |
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58 inline void FilterOutOfRegionClosure::do_oop_nv(T* p) { |
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59 T heap_oop = oopDesc::load_heap_oop(p); |
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60 if (!oopDesc::is_null(heap_oop)) { |
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61 HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop); |
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62 if (obj_hw < _r_bottom || obj_hw >= _r_end) { |
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63 _oc->do_oop(p); |
342 | 64 #if FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT |
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65 _out_of_region++; |
342 | 66 #endif |
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67 } |
342 | 68 } |
69 } | |
70 | |
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71 // This closure is applied to the fields of the objects that have just been copied. |
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72 template <class T> |
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73 inline void G1ParScanClosure::do_oop_nv(T* p) { |
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74 T heap_oop = oopDesc::load_heap_oop(p); |
342 | 75 |
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76 if (!oopDesc::is_null(heap_oop)) { |
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77 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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78 if (_g1->in_cset_fast_test(obj)) { |
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79 // We're not going to even bother checking whether the object is |
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80 // already forwarded or not, as this usually causes an immediate |
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81 // stall. We'll try to prefetch the object (for write, given that |
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82 // we might need to install the forwarding reference) and we'll |
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83 // get back to it when pop it from the queue |
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84 Prefetch::write(obj->mark_addr(), 0); |
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85 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); |
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86 |
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87 // slightly paranoid test; I'm trying to catch potential |
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88 // problems before we go into push_on_queue to know where the |
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89 // problem is coming from |
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90 assert((obj == oopDesc::load_decode_heap_oop(p)) || |
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91 (obj->is_forwarded() && |
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92 obj->forwardee() == oopDesc::load_decode_heap_oop(p)), |
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93 "p should still be pointing to obj or to its forwardee"); |
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94 |
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95 _par_scan_state->push_on_queue(p); |
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96 } else { |
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97 _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num()); |
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98 } |
342 | 99 } |
100 } | |
1261 | 101 |
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102 template <class T> |
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103 inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) { |
1261 | 104 T heap_oop = oopDesc::load_heap_oop(p); |
105 | |
106 if (!oopDesc::is_null(heap_oop)) { | |
107 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); | |
108 if (_g1->in_cset_fast_test(obj)) { | |
109 Prefetch::write(obj->mark_addr(), 0); | |
110 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); | |
1705 | 111 |
112 // Place on the references queue | |
1261 | 113 _par_scan_state->push_on_queue(p); |
114 } | |
115 } | |
116 } | |
1705 | 117 |
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118 template <class T> |
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119 inline void G1CMOopClosure::do_oop_nv(T* p) { |
3771 | 120 assert(_g1h->is_in_g1_reserved((HeapWord*) p), "invariant"); |
121 assert(!_g1h->is_on_master_free_list( | |
122 _g1h->heap_region_containing((HeapWord*) p)), "invariant"); | |
123 | |
124 oop obj = oopDesc::load_decode_heap_oop(p); | |
125 if (_cm->verbose_high()) { | |
126 gclog_or_tty->print_cr("[%d] we're looking at location " | |
127 "*"PTR_FORMAT" = "PTR_FORMAT, | |
128 _task->task_id(), p, (void*) obj); | |
129 } | |
130 _task->deal_with_reference(obj); | |
131 } | |
1972 | 132 |
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133 template <class T> |
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134 inline void G1RootRegionScanClosure::do_oop_nv(T* p) { |
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135 T heap_oop = oopDesc::load_heap_oop(p); |
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136 if (!oopDesc::is_null(heap_oop)) { |
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137 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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138 HeapRegion* hr = _g1h->heap_region_containing((HeapWord*) obj); |
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139 if (hr != NULL) { |
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140 _cm->grayRoot(obj, obj->size(), _worker_id, hr); |
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141 } |
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142 } |
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143 } |
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144 |
4839 | 145 template <class T> |
146 inline void G1Mux2Closure::do_oop_nv(T* p) { | |
147 // Apply first closure; then apply the second. | |
148 _c1->do_oop(p); | |
149 _c2->do_oop(p); | |
150 } | |
151 | |
152 template <class T> | |
153 inline void G1TriggerClosure::do_oop_nv(T* p) { | |
154 // Record that this closure was actually applied (triggered). | |
155 _triggered = true; | |
156 } | |
157 | |
158 template <class T> | |
159 inline void G1InvokeIfNotTriggeredClosure::do_oop_nv(T* p) { | |
160 if (!_trigger_cl->triggered()) { | |
161 _oop_cl->do_oop(p); | |
162 } | |
163 } | |
164 | |
165 template <class T> | |
166 inline void G1UpdateRSOrPushRefOopClosure::do_oop_nv(T* p) { | |
167 oop obj = oopDesc::load_decode_heap_oop(p); | |
168 #ifdef ASSERT | |
169 // can't do because of races | |
170 // assert(obj == NULL || obj->is_oop(), "expected an oop"); | |
171 | |
172 // Do the safe subset of is_oop | |
173 if (obj != NULL) { | |
174 #ifdef CHECK_UNHANDLED_OOPS | |
175 oopDesc* o = obj.obj(); | |
176 #else | |
177 oopDesc* o = obj; | |
178 #endif // CHECK_UNHANDLED_OOPS | |
179 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); | |
180 assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); | |
181 } | |
182 #endif // ASSERT | |
183 | |
184 assert(_from != NULL, "from region must be non-NULL"); | |
185 | |
186 HeapRegion* to = _g1->heap_region_containing(obj); | |
187 if (to != NULL && _from != to) { | |
188 // The _record_refs_into_cset flag is true during the RSet | |
189 // updating part of an evacuation pause. It is false at all | |
190 // other times: | |
191 // * rebuilding the rembered sets after a full GC | |
192 // * during concurrent refinement. | |
193 // * updating the remembered sets of regions in the collection | |
194 // set in the event of an evacuation failure (when deferred | |
195 // updates are enabled). | |
196 | |
197 if (_record_refs_into_cset && to->in_collection_set()) { | |
198 // We are recording references that point into the collection | |
199 // set and this particular reference does exactly that... | |
200 // If the referenced object has already been forwarded | |
201 // to itself, we are handling an evacuation failure and | |
202 // we have already visited/tried to copy this object | |
203 // there is no need to retry. | |
204 if (!self_forwarded(obj)) { | |
205 assert(_push_ref_cl != NULL, "should not be null"); | |
206 // Push the reference in the refs queue of the G1ParScanThreadState | |
207 // instance for this worker thread. | |
208 _push_ref_cl->do_oop(p); | |
209 } | |
210 | |
211 // Deferred updates to the CSet are either discarded (in the normal case), | |
212 // or processed (if an evacuation failure occurs) at the end | |
213 // of the collection. | |
214 // See G1RemSet::cleanup_after_oops_into_collection_set_do(). | |
215 } else { | |
216 // We either don't care about pushing references that point into the | |
217 // collection set (i.e. we're not during an evacuation pause) _or_ | |
218 // the reference doesn't point into the collection set. Either way | |
219 // we add the reference directly to the RSet of the region containing | |
220 // the referenced object. | |
221 _g1_rem_set->par_write_ref(_from, p, _worker_i); | |
222 } | |
223 } | |
224 } | |
225 | |
1972 | 226 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP |