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acp runtime: the queue cap's comment says it drops the newest item

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damocles 2026-11-12 07:54:18 +01:00 • committed by mara
commit 40ec5ac9e0
1 changed files with 7 additions and 4 deletions
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11
hive-runtime/src/acp/rpc.rs
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@ -207,9 +207,12 @@ impl Drop for Connection {
}
}
/// How many items wait for the harness before the oldest news is dropped. A
/// turn drains the queue as it goes, so only an agent that talks while no turn
/// runs gets near this; its items are thrown away at the next prompt anyway.
/// How many items wait for the harness before new ones are dropped. A turn
/// drains the queue as it goes, so only an agent that talks while no turn runs
/// gets near this; its items are thrown away at the next prompt anyway. Keeping
/// the oldest and dropping the newest means a sink that stalled mid-turn for
/// this many items would lose the latest output; that is the right side to
/// lose for the idle case this bounds.
const INCOMING_CAP: usize = 4096;
/// The sending half of the agent's output queue. A full queue drops the new
@ -230,7 +233,7 @@ impl Feed {
if !self.full.swap(true, Ordering::Relaxed) {
tracing::warn!(
cap = INCOMING_CAP,
"ACP agent output is not being read; dropping what it sends until a turn drains it"
"ACP agent output is not being read; dropping what it sends once the queue is full (logged once per connection)"
);
}
true