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@@ -90,14 +90,20 @@ class MemcacheLockingProvider extends AbstractLockingProvider {
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*/
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public function releaseLock(string $path, int $type) {
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if ($type === self::LOCK_SHARED) {
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+ $newValue = 0;
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if ($this->getOwnSharedLockCount($path) === 1) {
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$removed = $this->memcache->cad($path, 1); // if we're the only one having a shared lock we can remove it in one go
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if (!$removed) { //someone else also has a shared lock, decrease only
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- $this->memcache->dec($path);
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+ $newValue = $this->memcache->dec($path);
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}
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} else {
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// if we own more than one lock ourselves just decrease
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- $this->memcache->dec($path);
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+ $newValue = $this->memcache->dec($path);
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+ }
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+
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+ // if we somehow release more locks then exists, reset the lock
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+ if ($newValue < 0) {
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+ $this->memcache->cad($path, $newValue);
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}
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} else if ($type === self::LOCK_EXCLUSIVE) {
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$this->memcache->cad($path, 'exclusive');
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