fix: track time spent in recursive markOrRun calls

Signed-off-by: Salvatore Martire <4652631+salmart-dev@users.noreply.github.com>

Author: salmart-dev

apps/files_sharing/lib/Listener/SharesUpdatedListener.php

@@ -43,9 +43,9 @@ class SharesUpdatedListener implements IEventListener {
 	private float $cutOffMarkTime;
 
 	/**
-	 * The total amount of time we've spent so far processing updates
+	 * Timestamp marking the start of the current timing period
 	 */
-	private float $updatedTime = 0.0;
+	private ?float $lastPeriodStart = null;
 	private bool $inUpdate = false;
 
 	public function __construct(
@@ -134,14 +134,18 @@ public function handle(Event $event): void {
 	}
 
 	private function markOrRun(IUser $user, callable $callback): void {
-		$start = floatval($this->clock->now()->format('U.u'));
-		if ($this->cutOffMarkTime === -1.0 || $this->updatedTime < $this->cutOffMarkTime) {
+		$now = floatval($this->clock->now()->format('U.u'));
+		$elapsed = $now - ($this->lastPeriodStart ?? $now);
+		$this->lastPeriodStart = $now;
+
+		if ($this->cutOffMarkTime === -1.0 && $elapsed < $this->cutOffMarkTime) {
 			$callback();
 		} else {
 			$this->markUserForRefresh($user);
 		}
+
 		$end = floatval($this->clock->now()->format('U.u'));
-		$this->updatedTime += $end - $start;
+		$this->lastPeriodStart = $end;
 	}
 
 	private function updateOrMarkUser(IUser $user): void {