| /* |
| * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_GC_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |
| #define SHARE_VM_GC_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |
| |
| #include "gc/shared/blockOffsetTable.hpp" |
| #include "gc/shared/space.hpp" |
| #include "runtime/safepoint.hpp" |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // BlockOffsetTable inlines |
| ////////////////////////////////////////////////////////////////////////// |
| inline HeapWord* BlockOffsetTable::block_start(const void* addr) const { |
| if (addr >= _bottom && addr < _end) { |
| return block_start_unsafe(addr); |
| } else { |
| return NULL; |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // BlockOffsetSharedArray inlines |
| ////////////////////////////////////////////////////////////////////////// |
| inline size_t BlockOffsetSharedArray::index_for(const void* p) const { |
| char* pc = (char*)p; |
| assert(pc >= (char*)_reserved.start() && |
| pc < (char*)_reserved.end(), |
| "p not in range."); |
| size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char)); |
| size_t result = delta >> BOTConstants::LogN; |
| assert(result < _vs.committed_size(), "bad index from address"); |
| return result; |
| } |
| |
| inline HeapWord* BlockOffsetSharedArray::address_for_index(size_t index) const { |
| assert(index < _vs.committed_size(), "bad index"); |
| HeapWord* result = _reserved.start() + (index << BOTConstants::LogN_words); |
| assert(result >= _reserved.start() && result < _reserved.end(), |
| "bad address from index"); |
| return result; |
| } |
| |
| inline void BlockOffsetSharedArray::check_reducing_assertion(bool reducing) { |
| assert(reducing || !SafepointSynchronize::is_at_safepoint() || init_to_zero() || |
| Thread::current()->is_VM_thread() || |
| Thread::current()->is_ConcurrentGC_thread() || |
| ((!Thread::current()->is_ConcurrentGC_thread()) && |
| ParGCRareEvent_lock->owned_by_self()), "Crack"); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // BlockOffsetArrayNonContigSpace inlines |
| ////////////////////////////////////////////////////////////////////////// |
| inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk, |
| size_t size) { |
| freed(blk, blk + size); |
| } |
| |
| inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk_start, |
| HeapWord* blk_end) { |
| // Verify that the BOT shows [blk_start, blk_end) to be one block. |
| verify_single_block(blk_start, blk_end); |
| // adjust _unallocated_block upward or downward |
| // as appropriate |
| if (BlockOffsetArrayUseUnallocatedBlock) { |
| assert(_unallocated_block <= _end, |
| "Inconsistent value for _unallocated_block"); |
| if (blk_end >= _unallocated_block && blk_start <= _unallocated_block) { |
| // CMS-specific note: a block abutting _unallocated_block to |
| // its left is being freed, a new block is being added or |
| // we are resetting following a compaction |
| _unallocated_block = blk_start; |
| } |
| } |
| } |
| |
| #endif // SHARE_VM_GC_SHARED_BLOCKOFFSETTABLE_INLINE_HPP |