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Refactor slot selection code in AIO interface.

Pointed by: Sunny
This commit is contained in:
inaam 2009-07-31 14:30:26 +00:00
parent 0c990811de
commit 2677895f74
1 changed files with 7 additions and 10 deletions
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17
os/os0file.c
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@ -3451,6 +3451,7 @@ os_aio_array_reserve_slot(
#endif
ulint i;
ulint counter;
ulint slots_per_seg;
ulint local_seg;
@ -3481,17 +3482,13 @@ loop:
goto loop;
}
/* First try to find a slot in the preferred local segment */
for (i = local_seg * slots_per_seg; i < array->n_slots; i++) {
slot = os_aio_array_get_nth_slot(array, i);
/* We start our search for an available slot from our preferred
local segment and do a full scan of the array. We are
guaranteed to find a slot in full scan. */
for (i = local_seg * slots_per_seg, counter = 0;
counter < array->n_slots; i++, counter++) {
if (slot->reserved == FALSE) {
goto found;
}
}
/* Fall back to a full scan. We are guaranteed to find a slot */
for (i = 0;; i++) {
i %= array->n_slots;
slot = os_aio_array_get_nth_slot(array, i);
if (slot->reserved == FALSE) {