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annotate src/share/vm/gc_implementation/parallelScavenge/psPromotionManager.inline.hpp @ 1836:894b1d7c7e01

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6423256: GC stacks should use a better data structure 6942771: SEGV in ParScanThreadState::take_from_overflow_stack Reviewed-by: apetrusenko, ysr, pbk
author jcoomes
date Tue, 28 Sep 2010 15:56:15 -0700
parents 9d7a8ab3736b
children f95d63e2154a
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1 /*
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2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 inline PSPromotionManager* PSPromotionManager::manager_array(int index) {
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26 assert(_manager_array != NULL, "access of NULL manager_array");
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27 assert(index >= 0 && index <= (int)ParallelGCThreads, "out of range manager_array access");
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28 return _manager_array[index];
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29 }
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30
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31 template <class T>
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32 inline void PSPromotionManager::claim_or_forward_internal_depth(T* p) {
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33 if (p != NULL) { // XXX: error if p != NULL here
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34 oop o = oopDesc::load_decode_heap_oop_not_null(p);
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35 if (o->is_forwarded()) {
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36 o = o->forwardee();
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37 // Card mark
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38 if (PSScavenge::is_obj_in_young((HeapWord*) o)) {
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39 PSScavenge::card_table()->inline_write_ref_field_gc(p, o);
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40 }
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41 oopDesc::encode_store_heap_oop_not_null(p, o);
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42 } else {
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43 push_depth(p);
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44 }
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45 }
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46 }
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47
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48 template <class T>
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49 inline void PSPromotionManager::claim_or_forward_depth(T* p) {
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50 assert(PSScavenge::should_scavenge(p, true), "revisiting object?");
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51 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap,
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52 "Sanity");
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53 assert(Universe::heap()->is_in(p), "pointer outside heap");
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54
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55 claim_or_forward_internal_depth(p);
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56 }
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57
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58 inline void PSPromotionManager::process_popped_location_depth(StarTask p) {
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59 if (is_oop_masked(p)) {
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60 assert(PSChunkLargeArrays, "invariant");
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61 oop const old = unmask_chunked_array_oop(p);
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62 process_array_chunk(old);
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63 } else {
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64 if (p.is_narrow()) {
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65 assert(UseCompressedOops, "Error");
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66 PSScavenge::copy_and_push_safe_barrier(this, (narrowOop*)p);
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67 } else {
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68 PSScavenge::copy_and_push_safe_barrier(this, (oop*)p);
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69 }
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70 }
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71 }
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73 #if TASKQUEUE_STATS
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74 void PSPromotionManager::record_steal(StarTask& p) {
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75 if (is_oop_masked(p)) {
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76 ++_masked_steals;
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77 }
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78 }
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79 #endif // TASKQUEUE_STATS