mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 20:42:30 +01:00
39 lines
1.1 KiB
Text
39 lines
1.1 KiB
Text
/**********************************************************************
|
|
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 */
|
|
ulint zip_size,/* in: compressed page size in bytes
|
|
or 0 for uncompressed pages */
|
|
fil_addr_t addr, /* in: file address */
|
|
ulint rw_latch, /* in: RW_S_LATCH, RW_X_LATCH */
|
|
mtr_t* mtr) /* in: mtr handle */
|
|
{
|
|
buf_block_t* block;
|
|
byte* ptr;
|
|
|
|
ut_ad(addr.boffset < UNIV_PAGE_SIZE);
|
|
ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH));
|
|
|
|
block = buf_page_get(space, zip_size, addr.page, rw_latch, mtr);
|
|
ptr = buf_block_get_frame(block) + addr.boffset;
|
|
|
|
buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK);
|
|
|
|
return(ptr);
|
|
}
|