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  • Committer: brian
  • Date: 2008-06-25 05:29:13 UTC
  • Revision ID: brian@localhost.localdomain-20080625052913-6upwo0jsrl4lnapl
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storage/innobase/include/fut0fut.ic
 
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/**********************************************************************
 
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File-based utilities
 
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(c) 1995 Innobase Oy
 
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Created 12/13/1995 Heikki Tuuri
 
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***********************************************************************/
 
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#include "sync0rw.h"
 
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#include "buf0buf.h"
 
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/************************************************************************
 
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Gets a pointer to a file address and latches the page. */
 
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UNIV_INLINE
 
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byte*
 
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fut_get_ptr(
 
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/*========*/
 
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                                /* out: pointer to a byte in a frame; the file
 
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                                page in the frame is bufferfixed and latched */
 
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        ulint           space,  /* in: space id */
 
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        fil_addr_t      addr,   /* in: file address */
 
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        ulint           rw_latch, /* in: RW_S_LATCH, RW_X_LATCH */
 
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        mtr_t*          mtr)    /* in: mtr handle */
 
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{
 
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        byte*   ptr;
 
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        ut_ad(mtr);
 
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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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        ptr = buf_page_get(space, addr.page, rw_latch, mtr) + addr.boffset;
 
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#ifdef UNIV_SYNC_DEBUG
 
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        buf_page_dbg_add_level(ptr, SYNC_NO_ORDER_CHECK);
 
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#endif /* UNIV_SYNC_DEBUG */
 
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        return(ptr);
 
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}