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/*****************************************************************************
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Copyright (C) 1994, 2010, Innobase Oy. All Rights Reserved.
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Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Gets a buffer page and declares its latching order level. */
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ulint space, /*!< in: space id */
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ulint zip_size, /*!< in: compressed page size in bytes
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or 0 for uncompressed pages */
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ulint page_no, /*!< in: page number */
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ulint mode, /*!< in: latch mode */
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const char* file, /*!< in: file name */
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ulint line, /*!< in: line where called */
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mtr_t* mtr) /*!< in/out: mtr */
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ulint space, /*!< in: space id */
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ulint zip_size, /*!< in: compressed page size in bytes
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or 0 for uncompressed pages */
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ulint page_no, /*!< in: page number */
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ulint mode, /*!< in: latch mode */
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mtr_t* mtr) /*!< in: mtr */
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buf_block_t* block;
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block = buf_page_get_gen(space, zip_size, page_no, mode,
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NULL, BUF_GET, file, line, mtr);
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block = buf_page_get(space, zip_size, page_no, mode, mtr);
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if (mode != RW_NO_LATCH) {
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/**************************************************************//**
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Gets a buffer page and declares its latching order level. */
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ulint space, /*!< in: space id */
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ulint zip_size, /*!< in: compressed page size in bytes
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or 0 for uncompressed pages */
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ulint page_no, /*!< in: page number */
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ulint mode, /*!< in: latch mode */
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mtr_t* mtr) /*!< in: mtr */
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return(buf_block_get_frame(btr_block_get(space, zip_size, page_no,
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/**************************************************************//**
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Sets the index id field of a page. */
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page_t* page, /*!< in: page to be created */
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page_zip_des_t* page_zip,/*!< in: compressed page whose uncompressed
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part will be updated, or NULL */
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index_id_t id, /*!< in: index id */
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dulint id, /*!< in: index id */
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mtr_t* mtr) /*!< in: mtr */
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if (UNIV_LIKELY_NULL(page_zip)) {
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page + (PAGE_HEADER + PAGE_INDEX_ID),
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mlog_write_ull(page + (PAGE_HEADER + PAGE_INDEX_ID), id, mtr);
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mlog_write_dulint(page + (PAGE_HEADER + PAGE_INDEX_ID),
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#endif /* !UNIV_HOTBACKUP */
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/**************************************************************//**
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Gets the child node file address in a node pointer.
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NOTE: the offsets array must contain all offsets for the record since
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we read the last field according to offsets and assume that it contains
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the child page number. In other words offsets must have been retrieved
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with rec_get_offsets(n_fields=ULINT_UNDEFINED).
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@return child node address */