aoqi@0: /*
aoqi@0:  * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP
aoqi@0: #define SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP
aoqi@0: 
aoqi@0: #include "memory/blockOffsetTable.hpp"
aoqi@0: #include "memory/space.hpp"
aoqi@0: #include "runtime/safepoint.hpp"
aoqi@0: 
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: // BlockOffsetTable inlines
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: inline HeapWord* BlockOffsetTable::block_start(const void* addr) const {
aoqi@0:   if (addr >= _bottom && addr < _end) {
aoqi@0:     return block_start_unsafe(addr);
aoqi@0:   } else {
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: // BlockOffsetSharedArray inlines
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: inline size_t BlockOffsetSharedArray::index_for(const void* p) const {
aoqi@0:   char* pc = (char*)p;
aoqi@0:   assert(pc >= (char*)_reserved.start() &&
aoqi@0:          pc <  (char*)_reserved.end(),
aoqi@0:          "p not in range.");
aoqi@0:   size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char));
aoqi@0:   size_t result = delta >> LogN;
aoqi@0:   assert(result < _vs.committed_size(), "bad index from address");
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: inline HeapWord* BlockOffsetSharedArray::address_for_index(size_t index) const {
aoqi@0:   assert(index < _vs.committed_size(), "bad index");
aoqi@0:   HeapWord* result = _reserved.start() + (index << LogN_words);
aoqi@0:   assert(result >= _reserved.start() && result < _reserved.end(),
aoqi@0:          "bad address from index");
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: inline void BlockOffsetSharedArray::check_reducing_assertion(bool reducing) {
aoqi@0:     assert(reducing || !SafepointSynchronize::is_at_safepoint() || init_to_zero() ||
aoqi@0:            Thread::current()->is_VM_thread() ||
aoqi@0:            Thread::current()->is_ConcurrentGC_thread() ||
aoqi@0:            ((!Thread::current()->is_ConcurrentGC_thread()) &&
aoqi@0:             ParGCRareEvent_lock->owned_by_self()), "Crack");
aoqi@0: }
aoqi@0: 
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: // BlockOffsetArrayNonContigSpace inlines
aoqi@0: //////////////////////////////////////////////////////////////////////////
aoqi@0: inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk,
aoqi@0:                                                   size_t size) {
aoqi@0:   freed(blk, blk + size);
aoqi@0: }
aoqi@0: 
aoqi@0: inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk_start,
aoqi@0:                                                   HeapWord* blk_end) {
aoqi@0:   // Verify that the BOT shows [blk_start, blk_end) to be one block.
aoqi@0:   verify_single_block(blk_start, blk_end);
aoqi@0:   // adjust _unallocated_block upward or downward
aoqi@0:   // as appropriate
aoqi@0:   if (BlockOffsetArrayUseUnallocatedBlock) {
aoqi@0:     assert(_unallocated_block <= _end,
aoqi@0:            "Inconsistent value for _unallocated_block");
aoqi@0:     if (blk_end >= _unallocated_block && blk_start <= _unallocated_block) {
aoqi@0:       // CMS-specific note: a block abutting _unallocated_block to
aoqi@0:       // its left is being freed, a new block is being added or
aoqi@0:       // we are resetting following a compaction
aoqi@0:       _unallocated_block = blk_start;
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: #endif // SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP