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CLEANUP: stick-tables: remove a few unneeded tests for use_wrlock

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Due to the code in stktable_touch_with_exp() being the same as in other
functions previously made around a loop trying first to upgrade a read
lock then to fall back to a direct write lock, there remains a confusing
construct with multiple tests on use_wrlock that is obviously zero when
tested. Let's remove them since the value is known and the loop does not
exist anymore.
This commit is contained in:
Willy Tarreau 2024-05-23 20:24:35 +02:00
parent 77f286e8bc
commit 8580f9db20
1 changed files with 5 additions and 18 deletions
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23
src/stick_table.c
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@ -572,25 +572,14 @@ void stktable_touch_with_exp(struct stktable *t, struct stksess *ts, int local,
/* If sync is enabled */
if (t->sync_task) {
/* We'll need to reliably check that the entry is in the tree.
* It's only inserted/deleted using a write lock so a read lock
* is sufficient to verify this. We may then need to upgrade it
* to perform an update (which is rare under load), and if the
* upgrade fails, we'll try again with a write lock directly.
*/
if (use_wrlock)
HA_RWLOCK_WRLOCK(STK_TABLE_LOCK, &t->updt_lock);
if (local) {
/* Check if this entry is not in the tree or not
* scheduled for at least one peer.
*/
if (!ts->upd.node.leaf_p || _HA_ATOMIC_LOAD(&ts->seen)) {
/* Time to upgrade the read lock to write lock if needed */
if (!use_wrlock) {
HA_RWLOCK_WRLOCK(STK_TABLE_LOCK, &t->updt_lock);
use_wrlock = 1;
}
/* Time to upgrade the read lock to write lock */
HA_RWLOCK_WRLOCK(STK_TABLE_LOCK, &t->updt_lock);
use_wrlock = 1;
/* here we're write-locked */
@ -619,10 +608,8 @@ void stktable_touch_with_exp(struct stktable *t, struct stksess *ts, int local,
*/
if (!ts->upd.node.leaf_p) {
/* Time to upgrade the read lock to write lock if needed */
if (!use_wrlock) {
HA_RWLOCK_WRLOCK(STK_TABLE_LOCK, &t->updt_lock);
use_wrlock = 1;
}
HA_RWLOCK_WRLOCK(STK_TABLE_LOCK, &t->updt_lock);
use_wrlock = 1;
/* here we're write-locked */
if (!ts->upd.node.leaf_p) {