1.1 --- a/src/share/vm/memory/metablock.cpp Fri Oct 18 10:37:26 2013 +0000
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,68 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation.
1.11 - *
1.12 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 - * version 2 for more details (a copy is included in the LICENSE file that
1.16 - * accompanied this code).
1.17 - *
1.18 - * You should have received a copy of the GNU General Public License version
1.19 - * 2 along with this work; if not, write to the Free Software Foundation,
1.20 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 - *
1.22 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 - * or visit www.oracle.com if you need additional information or have any
1.24 - * questions.
1.25 - *
1.26 - */
1.27 -
1.28 -#include "precompiled.hpp"
1.29 -#include "memory/allocation.hpp"
1.30 -#include "memory/metablock.hpp"
1.31 -#include "utilities/copy.hpp"
1.32 -#include "utilities/debug.hpp"
1.33 -
1.34 -// Blocks of space for metadata are allocated out of Metachunks.
1.35 -//
1.36 -// Metachunk are allocated out of MetadataVirtualspaces and once
1.37 -// allocated there is no explicit link between a Metachunk and
1.38 -// the MetadataVirtualspaces from which it was allocated.
1.39 -//
1.40 -// Each SpaceManager maintains a
1.41 -// list of the chunks it is using and the current chunk. The current
1.42 -// chunk is the chunk from which allocations are done. Space freed in
1.43 -// a chunk is placed on the free list of blocks (BlockFreelist) and
1.44 -// reused from there.
1.45 -//
1.46 -// Future modification
1.47 -//
1.48 -// The Metachunk can conceivable be replaced by the Chunk in
1.49 -// allocation.hpp. Note that the latter Chunk is the space for
1.50 -// allocation (allocations from the chunk are out of the space in
1.51 -// the Chunk after the header for the Chunk) where as Metachunks
1.52 -// point to space in a VirtualSpace. To replace Metachunks with
1.53 -// Chunks, change Chunks so that they can be allocated out of a VirtualSpace.
1.54 -size_t Metablock::_min_block_byte_size = sizeof(Metablock);
1.55 -
1.56 -// New blocks returned by the Metaspace are zero initialized.
1.57 -// We should fix the constructors to not assume this instead.
1.58 -Metablock* Metablock::initialize(MetaWord* p, size_t word_size) {
1.59 - if (p == NULL) {
1.60 - return NULL;
1.61 - }
1.62 -
1.63 - Metablock* result = (Metablock*) p;
1.64 -
1.65 - // Clear the memory
1.66 - Copy::fill_to_aligned_words((HeapWord*)result, word_size);
1.67 -#ifdef ASSERT
1.68 - result->set_word_size(word_size);
1.69 -#endif
1.70 - return result;
1.71 -}
