mirror of
https://github.com/MariaDB/server.git
synced 2025-01-24 07:44:22 +01:00
8f18616ef0
and lexer files). From now on, the following Emacs cc-mode settings apply when indenting C function bodies in InnoDB: (setq c-basic-offset 8) (setq c-label-minimum-indentation 0) (add-to-list 'c-offsets-alist '(c . 0)) (add-to-list 'c-offsets-alist '(label . [0])) The indentation rules for function declarations still have not been formalized, and they must be formatted manually. Try to limit all lines to at most 79 characters (assuming TAB stops every 8 characters) by splitting lines before opening parenthesis, or at string constants. Fix some grammar mistakes in diagnostic output: match to, match with -> match found from -> found in trying rename -> trying to rename Fix an error in page_check_dir(): it said "supremum not pointed to" when the infimum was not pointed to. Enclose commented-out code snippets in #if 0 ... #endif instead of /* ... */. Add (void*) casts to some %p parameters in fprintf() calls. Try to split lines before a binary operator, not after one. (These three fixes were not made everywhere.)
86 lines
2.2 KiB
Text
86 lines
2.2 KiB
Text
/******************************************************
|
|
Transaction undo log record
|
|
|
|
(c) 1996 Innobase Oy
|
|
|
|
Created 3/26/1996 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
/**************************************************************************
|
|
Reads from an undo log record the record type. */
|
|
UNIV_INLINE
|
|
ulint
|
|
trx_undo_rec_get_type(
|
|
/*==================*/
|
|
/* out: record type */
|
|
trx_undo_rec_t* undo_rec) /* in: undo log record */
|
|
{
|
|
return(mach_read_from_1(undo_rec + 2) & (TRX_UNDO_CMPL_INFO_MULT - 1));
|
|
}
|
|
|
|
/**************************************************************************
|
|
Reads from an undo log record the record compiler info. */
|
|
UNIV_INLINE
|
|
ulint
|
|
trx_undo_rec_get_cmpl_info(
|
|
/*=======================*/
|
|
/* out: compiler info */
|
|
trx_undo_rec_t* undo_rec) /* in: undo log record */
|
|
{
|
|
return(mach_read_from_1(undo_rec + 2) / TRX_UNDO_CMPL_INFO_MULT);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Returns TRUE if an undo log record contains an extern storage field. */
|
|
UNIV_INLINE
|
|
ibool
|
|
trx_undo_rec_get_extern_storage(
|
|
/*============================*/
|
|
/* out: TRUE if extern */
|
|
trx_undo_rec_t* undo_rec) /* in: undo log record */
|
|
{
|
|
if (mach_read_from_1(undo_rec + 2) & TRX_UNDO_UPD_EXTERN) {
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Reads the undo log record number. */
|
|
UNIV_INLINE
|
|
dulint
|
|
trx_undo_rec_get_undo_no(
|
|
/*=====================*/
|
|
/* out: undo no */
|
|
trx_undo_rec_t* undo_rec) /* in: undo log record */
|
|
{
|
|
byte* ptr;
|
|
|
|
ptr = undo_rec + 3;
|
|
|
|
return(mach_dulint_read_much_compressed(ptr));
|
|
}
|
|
|
|
/***************************************************************************
|
|
Copies the undo record to the heap. */
|
|
UNIV_INLINE
|
|
trx_undo_rec_t*
|
|
trx_undo_rec_copy(
|
|
/*==============*/
|
|
/* out, own: copy of undo log record */
|
|
trx_undo_rec_t* undo_rec, /* in: undo log record */
|
|
mem_heap_t* heap) /* in: heap where copied */
|
|
{
|
|
ulint len;
|
|
trx_undo_rec_t* rec_copy;
|
|
|
|
len = mach_read_from_2(undo_rec) + buf_frame_align(undo_rec)
|
|
- undo_rec;
|
|
rec_copy = mem_heap_alloc(heap, len);
|
|
|
|
ut_memcpy(rec_copy, undo_rec, len);
|
|
|
|
return(rec_copy);
|
|
}
|