66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
/*****************************************************************************
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Copyright (c) 1995, 2018, Oracle and/or its affiliates. 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, version 2.0, as published by the
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Free Software Foundation.
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This program is also distributed with certain software (including but not
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limited to OpenSSL) that is licensed under separate terms, as designated in a
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particular file or component or in included license documentation. The authors
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of MySQL hereby grant you an additional permission to link the program and
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your derivative works with the separately licensed software that they have
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included with MySQL.
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This program 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 FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
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for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/** @file include/fut0fut.ic
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File-based utilities
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Created 12/13/1995 Heikki Tuuri
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***********************************************************************/
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#include "buf0buf.h"
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#include "sync0rw.h"
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/** Gets a pointer to a file address and latches the page.
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@param[in] space space id
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@param[in] page_size page size
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@param[in] addr file address
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@param[in] rw_latch RW_S_LATCH, RW_X_LATCH, RW_SX_LATCH
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@param[in,out] mtr mini-transaction
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@param[out] ptr_block file page
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@return pointer to a byte in (*ptr_block)->frame; the *ptr_block is
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bufferfixed and latched */
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UNIV_INLINE
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byte *fut_get_ptr(space_id_t space, const page_size_t &page_size,
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fil_addr_t addr, rw_lock_type_t rw_latch, mtr_t *mtr,
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buf_block_t **ptr_block) {
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buf_block_t *block;
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byte *ptr;
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ut_ad(addr.boffset < UNIV_PAGE_SIZE);
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ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH) ||
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(rw_latch == RW_SX_LATCH));
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block = buf_page_get(page_id_t(space, addr.page), page_size, rw_latch, mtr);
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ptr = buf_block_get_frame(block) + addr.boffset;
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buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK);
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if (ptr_block != NULL) {
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*ptr_block = block;
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}
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return (ptr);
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}
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