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trx_purge_add_undo_to_history(): Non-functional cleanup

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Simplify the debug code, and use mach_read_from_4() instead of
the wrapper function mtr_read_ulint().
This commit is contained in:
Marko Mäkelä 2019-03-19 11:09:10 +02:00
parent 397b6b13d0
commit 6893e9940a
1 changed files with 5 additions and 9 deletions
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14
storage/innobase/trx/trx0purge.cc
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@ -231,22 +231,18 @@ trx_purge_add_undo_to_history(const trx_t* trx, trx_undo_t*& undo, mtr_t* mtr)
}
if (undo->state != TRX_UNDO_CACHED) {
ulint hist_size;
#ifdef UNIV_DEBUG
trx_usegf_t* seg_header = undo_page + TRX_UNDO_SEG_HDR;
#endif /* UNIV_DEBUG */
/* The undo log segment will not be reused */
ut_a(undo->id < TRX_RSEG_N_SLOTS);
trx_rsegf_set_nth_undo(rseg_header, undo->id, FIL_NULL, mtr);
MONITOR_DEC(MONITOR_NUM_UNDO_SLOT_USED);
hist_size = mtr_read_ulint(
rseg_header + TRX_RSEG_HISTORY_SIZE, MLOG_4BYTES, mtr);
uint32_t hist_size = mach_read_from_4(TRX_RSEG_HISTORY_SIZE
+ rseg_header);
ut_ad(undo->size == flst_get_len(
seg_header + TRX_UNDO_PAGE_LIST));
ut_ad(undo->size == flst_get_len(TRX_UNDO_SEG_HDR
+ TRX_UNDO_PAGE_LIST
+ undo_page));
mlog_write_ulint(
rseg_header + TRX_RSEG_HISTORY_SIZE,