From d9e0b6870201d9200b3c225903b43b850475600b Mon Sep 17 00:00:00 2001 From: eunhhu Date: Wed, 30 Sep 2026 03:32:07 +0100 Subject: Hold a window of each output's sends in its transport, not the outbox A link's ring and a wire's queue took every saved send of their output and kept it until delivered: with the receiver down they held the outbox a second time, 178 B and 313 B more a send (104). Each outlet now holds a window, --window bytes (4 MiB) and 65,536 sends past what its receiver has, at least one; the outbox keeps the rest. The owner remembers each outlet's place in the outbox and looks on from there after a save and after its transports deliver. Places move back by the sends that left the outbox since (PureApp.sends_gone), so a trim before a place skips nothing, and sends queued before are not looked at again however many wait. pure_app_sent reads a send by its place (the newest-first visit it replaces is gone); pure_link_held and pure_wire_held say what a transport holds. With the receiver down a node now grows by the outbox alone once the window is full: 219 and 218 B a send over the link and HTTP (399 and 534 B before). check.py server_windows keeps the receivers of a sender's two outputs, one linked and one over HTTP, down through 300 buys with a 2,000-byte window, then starts them: each applies all 300 once. Without the refill after deliveries the link stops at 117. --- link/link.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'link/link.c') diff --git a/link/link.c b/link/link.c index 37a5a2a..ad9376c 100644 --- a/link/link.c +++ b/link/link.c @@ -210,6 +210,13 @@ uint64_t pure_link_delivered(PureLink *l) { return stored; } +size_t pure_link_held(PureLink *l) { + pthread_mutex_lock(&l->lock); + size_t held = pure_link_sender_held(l->sender); + pthread_mutex_unlock(&l->lock); + return held; +} + static void take_answers(PureLink *l, uint64_t now) { for (unsigned rounds = 0, n = TAKE; rounds < 4 && n == TAKE; ++rounds) { n = (unsigned)take_datagrams(l->fd, l->taking); -- cgit v1.2.3