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fut0fut.ic
Package: mysql-3.23.35.tar.gz [view]
Upload User: tsgydb
Upload Date: 2007-04-14
Package Size: 10674k
Code Size: 1k
Category:
MySQL
Development Platform:
Visual C++
- /**********************************************************************
- File-based utilities
- (c) 1995 Innobase Oy
- Created 12/13/1995 Heikki Tuuri
- ***********************************************************************/
- #include "sync0rw.h"
- #include "buf0buf.h"
- /************************************************************************
- Gets a pointer to a file address and latches the page. */
- UNIV_INLINE
- byte*
- fut_get_ptr(
- /*========*/
- /* out: pointer to a byte in a frame; the file
- page in the frame is bufferfixed and latched */
- ulint space, /* in: space id */
- fil_addr_t addr, /* in: file address */
- ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH */
- mtr_t* mtr) /* in: mtr handle */
- {
- byte* ptr;
- ut_ad(mtr);
- ut_ad(addr.boffset < UNIV_PAGE_SIZE);
- ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH));
- ptr = buf_page_get(space, addr.page, rw_latch, mtr) + addr.boffset;
- buf_page_dbg_add_level(ptr, SYNC_NO_ORDER_CHECK);
- return(ptr);
- }