1 /***************************************************************************** 2 3 Copyright (c) 1995, 2018, Oracle and/or its affiliates. All Rights Reserved. 4 5 This program is free software; you can redistribute it and/or modify it under 6 the terms of the GNU General Public License, version 2.0, as published by the 7 Free Software Foundation. 8 9 This program is also distributed with certain software (including but not 10 limited to OpenSSL) that is licensed under separate terms, as designated in a 11 particular file or component or in included license documentation. The authors 12 of MySQL hereby grant you an additional permission to link the program and 13 your derivative works with the separately licensed software that they have 14 included with MySQL. 15 16 This program is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 18 FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, 19 for more details. 20 21 You should have received a copy of the GNU General Public License along with 22 this program; if not, write to the Free Software Foundation, Inc., 23 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 24 25 *****************************************************************************/ 26 27 /** @file buf/buf.h 28 The database buffer pool high-level routines 29 30 Created 11/5/1995 Heikki Tuuri 31 *******************************************************/ 32 33 #ifndef buf_h 34 #define buf_h 35 36 #include "univ.i" 37 38 #include "page0size.h" 39 40 /** Checks if a page contains only zeroes. 41 @param[in] read_buf database page 42 @param[in] page_size page size 43 @return true if page is filled with zeroes */ 44 bool buf_page_is_zeroes(const byte *read_buf, const page_size_t &page_size); 45 #endif 46