function remove($item)
{
if (!sem_acquire($this->sem)) {
throw new Scalr_System_Ipc_Exception("Cannot acquire semaphore");
}
try {
$ret = false;
if (-1 != ($i = $this->indexOf($item))) {
$this->logger->debug("remove item at '{$i}'");
$this->shm->remove($i);
$meta = $this->getMeta();
$meta["size"]--;
//$this->logger->debug("Set meta after remove: " . var_export($meta, true));
$this->putMeta($meta);
$ret = true;
}
sem_release($this->sem);
return $ret;
} catch (Exception $e) {
sem_release($this->sem);
throw $e;
}
}
function offsetUnset($offset)
{
sem_acquire($this->sem());
try {
$intOffset = crc32($offset);
$this->shm->remove($intOffset);
$meta = $this->shm->get(0);
$meta["count"]--;
array_splice($meta["keys"], array_search($offset, $meta["keys"]), 1);
$this->shm->put(0, $meta);
sem_release($this->sem());
} catch (Exception $e) {
sem_release($this->sem());
throw $e;
}
}
