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LayoutLedger

pixelflux::wayland::host

Struct LayoutLedger 

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struct LayoutLedger {
    epoch: u64,
    decided: u64,
    realized: bool,
}
Expand description

Outcome ledger for layout requests: every Apply carries an epoch, and the control thread records whether the newest one it processed was realized by the host. A request is answered once decided has caught up to its epoch; a newer request subsumes an older one (the layout map is cumulative), so the newest verdict stands for every epoch at or below it. Polled, never waited on: the session side reads it from its own loop.

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§epoch: u64§decided: u64§realized: bool

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impl LayoutLedger

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fn issue(&mut self) -> u64

Number the next request.

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fn decide(&mut self, epoch: u64, realized: bool)

Record the host’s verdict on epoch (ignored if a newer one is already in).

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fn outcome(&self, epoch: u64) -> Option<bool>

The verdict covering epoch: None while the host has not answered it yet.

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impl Default for LayoutLedger

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fn default() -> LayoutLedger

Returns the “default value” for a type. Read more

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