Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp @ 14460:8a9bb7821e28
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| author | kvn |
|---|---|
| date | Wed, 19 Feb 2014 12:08:49 -0800 |
| parents | 63a4eb8bcd23 d2907f74462e |
| children | f460c6926af7 |
| rev | line source |
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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" | |
| 14391 | 32 #include "gc_implementation/g1/g1RemSet.inline.hpp" |
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33 #include "gc_implementation/g1/heapRegionRemSet.hpp" |
| 1972 | 34 |
| 342 | 35 /* |
| 36 * This really ought to be an inline function, but apparently the C++ | |
| 37 * compiler sometimes sees fit to ignore inline declarations. Sigh. | |
| 38 */ | |
| 39 | |
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40 template <class T> |
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41 inline void FilterIntoCSClosure::do_oop_nv(T* p) { |
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42 T heap_oop = oopDesc::load_heap_oop(p); |
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43 if (!oopDesc::is_null(heap_oop) && |
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44 _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) { |
| 342 | 45 _oc->do_oop(p); |
| 46 } | |
| 47 } | |
| 48 | |
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49 template <class T> |
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50 inline void FilterOutOfRegionClosure::do_oop_nv(T* p) { |
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51 T heap_oop = oopDesc::load_heap_oop(p); |
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52 if (!oopDesc::is_null(heap_oop)) { |
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53 HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop); |
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54 if (obj_hw < _r_bottom || obj_hw >= _r_end) { |
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55 _oc->do_oop(p); |
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56 } |
| 342 | 57 } |
| 58 } | |
| 59 | |
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60 // This closure is applied to the fields of the objects that have just been copied. |
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61 template <class T> |
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62 inline void G1ParScanClosure::do_oop_nv(T* p) { |
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63 T heap_oop = oopDesc::load_heap_oop(p); |
| 342 | 64 |
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65 if (!oopDesc::is_null(heap_oop)) { |
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66 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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67 if (_g1->in_cset_fast_test(obj)) { |
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68 // We're not going to even bother checking whether the object is |
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69 // already forwarded or not, as this usually causes an immediate |
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70 // stall. We'll try to prefetch the object (for write, given that |
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71 // we might need to install the forwarding reference) and we'll |
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72 // get back to it when pop it from the queue |
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73 Prefetch::write(obj->mark_addr(), 0); |
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74 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); |
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75 |
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76 // slightly paranoid test; I'm trying to catch potential |
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77 // problems before we go into push_on_queue to know where the |
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78 // problem is coming from |
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79 assert((obj == oopDesc::load_decode_heap_oop(p)) || |
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80 (obj->is_forwarded() && |
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81 obj->forwardee() == oopDesc::load_decode_heap_oop(p)), |
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82 "p should still be pointing to obj or to its forwardee"); |
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83 |
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84 _par_scan_state->push_on_queue(p); |
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85 } else { |
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86 _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num()); |
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87 } |
| 342 | 88 } |
| 89 } | |
| 1261 | 90 |
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91 template <class T> |
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92 inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) { |
| 1261 | 93 T heap_oop = oopDesc::load_heap_oop(p); |
| 94 | |
| 95 if (!oopDesc::is_null(heap_oop)) { | |
| 96 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); | |
| 97 if (_g1->in_cset_fast_test(obj)) { | |
| 98 Prefetch::write(obj->mark_addr(), 0); | |
| 99 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); | |
| 1705 | 100 |
| 101 // Place on the references queue | |
| 1261 | 102 _par_scan_state->push_on_queue(p); |
| 103 } | |
| 104 } | |
| 105 } | |
| 1705 | 106 |
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107 template <class T> |
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108 inline void G1CMOopClosure::do_oop_nv(T* p) { |
| 3771 | 109 assert(_g1h->is_in_g1_reserved((HeapWord*) p), "invariant"); |
| 110 assert(!_g1h->is_on_master_free_list( | |
| 111 _g1h->heap_region_containing((HeapWord*) p)), "invariant"); | |
| 112 | |
| 113 oop obj = oopDesc::load_decode_heap_oop(p); | |
| 114 if (_cm->verbose_high()) { | |
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115 gclog_or_tty->print_cr("[%u] we're looking at location " |
| 3771 | 116 "*"PTR_FORMAT" = "PTR_FORMAT, |
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117 _task->worker_id(), p, (void*) obj); |
| 3771 | 118 } |
| 119 _task->deal_with_reference(obj); | |
| 120 } | |
| 1972 | 121 |
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122 template <class T> |
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123 inline void G1RootRegionScanClosure::do_oop_nv(T* p) { |
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124 T heap_oop = oopDesc::load_heap_oop(p); |
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125 if (!oopDesc::is_null(heap_oop)) { |
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126 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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127 HeapRegion* hr = _g1h->heap_region_containing((HeapWord*) obj); |
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128 if (hr != NULL) { |
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129 _cm->grayRoot(obj, obj->size(), _worker_id, hr); |
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130 } |
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131 } |
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132 } |
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133 |
| 4839 | 134 template <class T> |
| 135 inline void G1Mux2Closure::do_oop_nv(T* p) { | |
| 136 // Apply first closure; then apply the second. | |
| 137 _c1->do_oop(p); | |
| 138 _c2->do_oop(p); | |
| 139 } | |
| 140 | |
| 141 template <class T> | |
| 142 inline void G1TriggerClosure::do_oop_nv(T* p) { | |
| 143 // Record that this closure was actually applied (triggered). | |
| 144 _triggered = true; | |
| 145 } | |
| 146 | |
| 147 template <class T> | |
| 148 inline void G1InvokeIfNotTriggeredClosure::do_oop_nv(T* p) { | |
| 149 if (!_trigger_cl->triggered()) { | |
| 150 _oop_cl->do_oop(p); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 template <class T> | |
| 155 inline void G1UpdateRSOrPushRefOopClosure::do_oop_nv(T* p) { | |
| 156 oop obj = oopDesc::load_decode_heap_oop(p); | |
| 157 #ifdef ASSERT | |
| 158 // can't do because of races | |
| 159 // assert(obj == NULL || obj->is_oop(), "expected an oop"); | |
| 160 | |
| 161 // Do the safe subset of is_oop | |
| 162 if (obj != NULL) { | |
| 163 #ifdef CHECK_UNHANDLED_OOPS | |
| 164 oopDesc* o = obj.obj(); | |
| 165 #else | |
| 166 oopDesc* o = obj; | |
| 167 #endif // CHECK_UNHANDLED_OOPS | |
| 168 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); | |
| 169 assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); | |
| 170 } | |
| 171 #endif // ASSERT | |
| 172 | |
| 173 assert(_from != NULL, "from region must be non-NULL"); | |
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174 assert(_from->is_in_reserved(p), "p is not in from"); |
| 4839 | 175 |
| 176 HeapRegion* to = _g1->heap_region_containing(obj); | |
| 177 if (to != NULL && _from != to) { | |
| 178 // The _record_refs_into_cset flag is true during the RSet | |
| 179 // updating part of an evacuation pause. It is false at all | |
| 180 // other times: | |
| 14309 | 181 // * rebuilding the remembered sets after a full GC |
| 4839 | 182 // * during concurrent refinement. |
| 183 // * updating the remembered sets of regions in the collection | |
| 184 // set in the event of an evacuation failure (when deferred | |
| 185 // updates are enabled). | |
| 186 | |
| 187 if (_record_refs_into_cset && to->in_collection_set()) { | |
| 188 // We are recording references that point into the collection | |
| 189 // set and this particular reference does exactly that... | |
| 190 // If the referenced object has already been forwarded | |
| 191 // to itself, we are handling an evacuation failure and | |
| 192 // we have already visited/tried to copy this object | |
| 193 // there is no need to retry. | |
| 194 if (!self_forwarded(obj)) { | |
| 195 assert(_push_ref_cl != NULL, "should not be null"); | |
| 196 // Push the reference in the refs queue of the G1ParScanThreadState | |
| 197 // instance for this worker thread. | |
| 198 _push_ref_cl->do_oop(p); | |
| 199 } | |
| 200 | |
| 201 // Deferred updates to the CSet are either discarded (in the normal case), | |
| 202 // or processed (if an evacuation failure occurs) at the end | |
| 203 // of the collection. | |
| 204 // See G1RemSet::cleanup_after_oops_into_collection_set_do(). | |
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205 return; |
| 4839 | 206 } |
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207 |
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208 // We either don't care about pushing references that point into the |
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209 // collection set (i.e. we're not during an evacuation pause) _or_ |
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210 // the reference doesn't point into the collection set. Either way |
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211 // we add the reference directly to the RSet of the region containing |
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212 // the referenced object. |
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213 assert(to->rem_set() != NULL, "Need per-region 'into' remsets."); |
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214 to->rem_set()->add_reference(p, _worker_i); |
| 4839 | 215 } |
| 216 } | |
| 217 | |
| 1972 | 218 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP |