# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1700585026 -3600
# Node ID 649876680bf0b1cc59ca9d809b02767f50400541
# Parent  36284c879e2fdeb442561b3d89615f7192b7a160
util.poll: Return early if given zero timeout and no pending events

Should have been part of f33887f925e1 to ensure it won't skip processing
timers at all when very busy.

diff -r 36284c879e2f -r 649876680bf0 util-src/poll.c
--- a/util-src/poll.c	Mon Nov 13 10:40:24 2023 +0100
+++ b/util-src/poll.c	Tue Nov 21 17:43:46 2023 +0100
@@ -411,6 +411,12 @@
 	lua_Number timeout = luaL_checknumber(L, 2);
 	luaL_argcheck(L, timeout >= 0, 1, "positive number expected");
 
+	if(timeout == 0.0) {
+		lua_pushnil(L);
+		lua_pushstring(L, "timeout");
+		return 2;
+	}
+
 #ifdef USE_EPOLL
 	ret = epoll_wait(state->epoll_fd, state->events, MAX_EVENTS, timeout * 1000);
 #endif