64 lines
2.5 KiB
C++
64 lines
2.5 KiB
C++
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_MEMORY_ARCHIVEUTILS_INLINE_HPP
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#define SHARE_MEMORY_ARCHIVEUTILS_INLINE_HPP
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#include "memory/archiveUtils.hpp"
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#include "utilities/bitMap.inline.hpp"
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template <bool COMPACTING>
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inline bool SharedDataRelocator<COMPACTING>::do_bit(size_t offset) {
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address* p = _patch_base + offset;
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assert(_patch_base <= p && p < _patch_end, "must be");
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address old_ptr = *p;
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assert(_valid_old_base <= old_ptr && old_ptr < _valid_old_end, "must be");
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if (COMPACTING) {
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// Start-up performance: use a template parameter to elide this block for run-time archive
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// relocation.
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assert(Arguments::is_dumping_archive(), "Don't do this during run-time archive loading!");
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if (old_ptr == NULL) {
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_ptrmap->clear_bit(offset);
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DEBUG_ONLY(log_trace(cds, reloc)("Clearing pointer [" PTR_FORMAT "] -> NULL @ " SIZE_FORMAT_W(9), p2i(p), offset));
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return true;
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} else {
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_max_non_null_offset = offset;
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}
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} else {
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assert(old_ptr != NULL, "bits for NULL pointers should have been cleaned at dump time");
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}
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address new_ptr = old_ptr + _delta;
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assert(_valid_new_base <= new_ptr && new_ptr < _valid_new_end, "must be");
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DEBUG_ONLY(log_trace(cds, reloc)("Patch2: @%8d [" PTR_FORMAT "] " PTR_FORMAT " -> " PTR_FORMAT,
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(int)offset, p2i(p), p2i(old_ptr), p2i(new_ptr)));
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*p = new_ptr;
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return true; // keep iterating
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}
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#endif // SHARE_MEMORY_ARCHIVEUTILS_INLINE_HPP
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