https://nalar.dev/tags/sync.cond/ Recent content in Sync.Cond on Nalar Hugo en-us Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/go-sync-cond-wait-rechecks-shared-state/ Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/go-sync-cond-wait-rechecks-shared-state/ <p><code>sync.Cond.Wait</code> resumes after a notification, but the notification does not assert that a caller-specific condition is still true when the goroutine reacquires the lock. The shared predicate remains the source of truth, so a waiter checks it again after every return from <code>Wait</code>.</p> <p>This boundary separates notification from state. <code>Signal</code> and <code>Broadcast</code> announce that relevant state may have changed; they do not transfer ownership of that state or reserve it for a particular waiter.</p>