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Fix countBefore sentinel regression from millis wraparound fix

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PR #1795 changed PacketQueue::countBefore() to use signed 2's complement
arithmetic for millis wraparound safety. However, this broke the
0xFFFFFFFF sentinel pattern used by callers to mean "count all packets
regardless of schedule".

With the signed comparison, countBefore(0xFFFFFFFF) always returns 0,
causing hasPendingWork() to report false and repeaters to sleep with
packets still queued. Stats reporting also shows queue_len as 0.

Add an early-return for the sentinel value before the loop, and document
the sentinel convention on the virtual interface and implementation.
This commit is contained in:
Daniel Novak 2026-02-28 16:22:58 +01:00
parent 06ab9f7f6b
commit c436bd42c5
3 changed files with 3 additions and 2 deletions
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2
src/Dispatcher.h
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@ -89,7 +89,7 @@ public:
virtual void queueOutbound(Packet* packet, uint8_t priority, uint32_t scheduled_for) = 0;
virtual Packet* getNextOutbound(uint32_t now) = 0; // by priority
virtual int getOutboundCount(uint32_t now) const = 0;
virtual int getOutboundCount(uint32_t now) const = 0; // pass now=0xFFFFFFFF to count all
virtual int getFreeCount() const = 0;
virtual Packet* getOutboundByIdx(int i) = 0;
virtual Packet* removeOutboundByIdx(int i) = 0;