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annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 20446:c10b463abc6e

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8057824: methods to copy allocation context statistics Reviewed-by: mikael, jmasa, tschatzl
author jcoomes
date Wed, 10 Sep 2014 13:01:13 -0700
parents eec72fa4b108
children 6948da6d7c13
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1 /*
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2 * Copyright (c) 2001, 2012, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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27
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28 #include "gc_implementation/g1/g1RemSet.hpp"
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29 #include "gc_implementation/g1/heapRegion.hpp"
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30 #include "gc_implementation/g1/heapRegionRemSet.hpp"
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31 #include "oops/oop.inline.hpp"
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32
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33 inline uint G1RemSet::n_workers() {
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34 if (_g1->workers() != NULL) {
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35 return _g1->workers()->total_workers();
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36 } else {
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37 return 1;
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38 }
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39 }
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40
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41 template <class T>
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42 inline void G1RemSet::write_ref(HeapRegion* from, T* p) {
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43 par_write_ref(from, p, 0);
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44 }
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45
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46 template <class T>
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47 inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, int tid) {
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48 oop obj = oopDesc::load_decode_heap_oop(p);
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49 if (obj == NULL) {
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50 return;
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51 }
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52
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53 #ifdef ASSERT
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54 // can't do because of races
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55 // assert(obj == NULL || obj->is_oop(), "expected an oop");
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56
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57 // Do the safe subset of is_oop
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58 #ifdef CHECK_UNHANDLED_OOPS
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59 oopDesc* o = obj.obj();
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60 #else
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61 oopDesc* o = obj;
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62 #endif // CHECK_UNHANDLED_OOPS
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63 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
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64 assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
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65 #endif // ASSERT
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66
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67 assert(from == NULL || from->is_in_reserved(p), "p is not in from");
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68
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69 HeapRegion* to = _g1->heap_region_containing(obj);
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70 if (from != to) {
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71 assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
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72 to->rem_set()->add_reference(p, tid);
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73 }
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74 }
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76 template <class T>
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77 inline void UpdateRSOopClosure::do_oop_work(T* p) {
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78 assert(_from != NULL, "from region must be non-NULL");
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79 _rs->par_write_ref(_from, p, _worker_i);
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80 }
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81
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82 template <class T>
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83 inline void UpdateRSetImmediate::do_oop_work(T* p) {
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84 assert(_from->is_in_reserved(p), "paranoia");
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85 T heap_oop = oopDesc::load_heap_oop(p);
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86 if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) {
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87 _g1_rem_set->par_write_ref(_from, p, 0);
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88 }
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89 }
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90
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91 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP