Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 17567:5656140324ed
8030763: Validate global memory allocation
Summary: Add length checks where necessary
Reviewed-by: coleenp, mschoene
author | hseigel |
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date | Thu, 13 Feb 2014 11:28:17 -0500 |
parents | b4ebad3520bb |
children | b0c374311c4e |
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342 | 1 /* |
4839 | 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_G1REMSET_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP | |
27 | |
28 #include "gc_implementation/g1/g1RemSet.hpp" | |
29 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
30 #include "oops/oop.inline.hpp" | |
31 | |
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32 inline uint G1RemSet::n_workers() { |
342 | 33 if (_g1->workers() != NULL) { |
34 return _g1->workers()->total_workers(); | |
35 } else { | |
36 return 1; | |
37 } | |
38 } | |
39 | |
1861 | 40 template <class T> |
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41 inline void G1RemSet::write_ref(HeapRegion* from, T* p) { |
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42 par_write_ref(from, p, 0); |
342 | 43 } |
44 | |
1861 | 45 template <class T> |
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46 inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, int tid) { |
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47 oop obj = oopDesc::load_decode_heap_oop(p); |
342 | 48 #ifdef ASSERT |
49 // can't do because of races | |
50 // assert(obj == NULL || obj->is_oop(), "expected an oop"); | |
51 | |
52 // Do the safe subset of is_oop | |
53 if (obj != NULL) { | |
54 #ifdef CHECK_UNHANDLED_OOPS | |
55 oopDesc* o = obj.obj(); | |
56 #else | |
57 oopDesc* o = obj; | |
58 #endif // CHECK_UNHANDLED_OOPS | |
59 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); | |
60 assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); | |
61 } | |
62 #endif // ASSERT | |
1705 | 63 |
64 assert(from == NULL || from->is_in_reserved(p), "p is not in from"); | |
65 | |
342 | 66 HeapRegion* to = _g1->heap_region_containing(obj); |
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67 if (to != NULL && from != to) { |
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68 assert(to->rem_set() != NULL, "Need per-region 'into' remsets."); |
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69 to->rem_set()->add_reference(p, tid); |
342 | 70 } |
71 } | |
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72 |
1861 | 73 template <class T> |
74 inline void UpdateRSOopClosure::do_oop_work(T* p) { | |
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75 assert(_from != NULL, "from region must be non-NULL"); |
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76 _rs->par_write_ref(_from, p, _worker_i); |
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77 } |
1705 | 78 |
1861 | 79 template <class T> |
80 inline void UpdateRSetImmediate::do_oop_work(T* p) { | |
1705 | 81 assert(_from->is_in_reserved(p), "paranoia"); |
82 T heap_oop = oopDesc::load_heap_oop(p); | |
83 if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) { | |
84 _g1_rem_set->par_write_ref(_from, p, 0); | |
85 } | |
86 } | |
87 | |
1972 | 88 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP |