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1 /* |
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2 * Copyright (c) 2019, 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_MEMORY_ARCHIVEUTILS_INLINE_HPP |
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26 #define SHARE_MEMORY_ARCHIVEUTILS_INLINE_HPP |
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27 |
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28 #include "memory/archiveUtils.hpp" |
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29 #include "utilities/bitMap.inline.hpp" |
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30 |
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31 template <bool COMPACTING> |
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32 inline bool SharedDataRelocator<COMPACTING>::do_bit(size_t offset) { |
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33 address* p = _patch_base + offset; |
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34 assert(_patch_base <= p && p < _patch_end, "must be"); |
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35 |
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36 address old_ptr = *p; |
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37 assert(_valid_old_base <= old_ptr && old_ptr < _valid_old_end, "must be"); |
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38 |
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39 if (COMPACTING) { |
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40 // Start-up performance: use a template parameter to elide this block for run-time archive |
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41 // relocation. |
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42 assert(Arguments::is_dumping_archive(), "Don't do this during run-time archive loading!"); |
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43 if (old_ptr == NULL) { |
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44 _ptrmap->clear_bit(offset); |
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45 DEBUG_ONLY(log_trace(cds, reloc)("Clearing pointer [" PTR_FORMAT "] -> NULL @ " SIZE_FORMAT_W(9), p2i(p), offset)); |
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46 return true; |
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47 } else { |
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48 _max_non_null_offset = offset; |
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49 } |
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50 } else { |
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51 assert(old_ptr != NULL, "bits for NULL pointers should have been cleaned at dump time"); |
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52 } |
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53 |
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54 address new_ptr = old_ptr + _delta; |
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55 assert(_valid_new_base <= new_ptr && new_ptr < _valid_new_end, "must be"); |
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56 |
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57 DEBUG_ONLY(log_trace(cds, reloc)("Patch2: @%8d [" PTR_FORMAT "] " PTR_FORMAT " -> " PTR_FORMAT, |
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58 (int)offset, p2i(p), p2i(old_ptr), p2i(new_ptr))); |
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59 *p = new_ptr; |
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60 return true; // keep iterating |
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61 } |
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62 |
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63 #endif // SHARE_MEMORY_ARCHIVEUTILS_INLINE_HPP |