Enum ClaimOutcome 

pub enum ClaimOutcome {
    Primary(SingleInstanceGuard),
    Forwarded,
    Failed(ClaimFailure),
}

The typed result of SingleInstance::claim.

Variants

Primary(SingleInstanceGuard)

This process is the primary. Keep the guard alive.

Forwarded

A live primary accepted this launch’s message. Exit.

For a legacy tauri-plugin-single-instance holder on macOS the plugin has no reply, so “accepted” means it read the launch to its end and closed the connection, or, when it stayed silent for 2 s, that its socket belongs to this app’s own process. That silent case cannot be told from a slow callback, so it is still Forwarded but is logged loudly on stderr as “forwarded but NOT confirmed”. A socket whose owning process has exited, or belongs to another program and never answers, is not a holder (a descriptor leaked into a sidecar can keep such a socket accepting after the app is gone): the claim carries on and this process can become the primary.

Failed(ClaimFailure)

Arbitration could not be decided. Do not continue as a primary.

Implementations

impl ClaimOutcome

pub fn is_primary(&self) -> bool

True only for ClaimOutcome::Primary.