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1 /* |
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2 * Copyright (c) 2000, 2016, 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_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |
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26 #define SHARE_VM_GC_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |
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27 |
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28 #include "gc/shared/blockOffsetTable.hpp" |
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29 #include "gc/shared/space.hpp" |
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30 #include "runtime/safepoint.hpp" |
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31 |
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32 ////////////////////////////////////////////////////////////////////////// |
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33 // BlockOffsetTable inlines |
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34 ////////////////////////////////////////////////////////////////////////// |
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35 inline HeapWord* BlockOffsetTable::block_start(const void* addr) const { |
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36 if (addr >= _bottom && addr < _end) { |
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37 return block_start_unsafe(addr); |
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38 } else { |
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39 return NULL; |
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40 } |
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41 } |
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42 |
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43 ////////////////////////////////////////////////////////////////////////// |
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44 // BlockOffsetSharedArray inlines |
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45 ////////////////////////////////////////////////////////////////////////// |
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46 inline size_t BlockOffsetSharedArray::index_for(const void* p) const { |
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47 char* pc = (char*)p; |
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48 assert(pc >= (char*)_reserved.start() && |
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49 pc < (char*)_reserved.end(), |
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50 "p not in range."); |
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51 size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char)); |
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52 size_t result = delta >> BOTConstants::LogN; |
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53 assert(result < _vs.committed_size(), "bad index from address"); |
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54 return result; |
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55 } |
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56 |
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57 inline HeapWord* BlockOffsetSharedArray::address_for_index(size_t index) const { |
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58 assert(index < _vs.committed_size(), "bad index"); |
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59 HeapWord* result = _reserved.start() + (index << BOTConstants::LogN_words); |
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60 assert(result >= _reserved.start() && result < _reserved.end(), |
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61 "bad address from index"); |
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62 return result; |
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63 } |
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64 |
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65 inline void BlockOffsetSharedArray::check_reducing_assertion(bool reducing) { |
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66 assert(reducing || !SafepointSynchronize::is_at_safepoint() || init_to_zero() || |
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67 Thread::current()->is_VM_thread() || |
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68 Thread::current()->is_ConcurrentGC_thread() || |
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69 ((!Thread::current()->is_ConcurrentGC_thread()) && |
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70 ParGCRareEvent_lock->owned_by_self()), "Crack"); |
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71 } |
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72 |
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73 ////////////////////////////////////////////////////////////////////////// |
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74 // BlockOffsetArrayNonContigSpace inlines |
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75 ////////////////////////////////////////////////////////////////////////// |
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76 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk, |
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77 size_t size) { |
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78 freed(blk, blk + size); |
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79 } |
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80 |
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81 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk_start, |
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82 HeapWord* blk_end) { |
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83 // Verify that the BOT shows [blk_start, blk_end) to be one block. |
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84 verify_single_block(blk_start, blk_end); |
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85 // adjust _unallocated_block upward or downward |
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86 // as appropriate |
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87 if (BlockOffsetArrayUseUnallocatedBlock) { |
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88 assert(_unallocated_block <= _end, |
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89 "Inconsistent value for _unallocated_block"); |
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90 if (blk_end >= _unallocated_block && blk_start <= _unallocated_block) { |
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91 // CMS-specific note: a block abutting _unallocated_block to |
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92 // its left is being freed, a new block is being added or |
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93 // we are resetting following a compaction |
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94 _unallocated_block = blk_start; |
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95 } |
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96 } |
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97 } |
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98 |
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99 #endif // SHARE_VM_GC_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |