1 files changed, 8 insertions, 2 deletions
diff --git a/fifo.lua b/fifo.lua
index 03a7af7..f3a3d10 100644
--- a/fifo.lua
+++ b/fifo.lua
@@ -11,7 +11,7 @@ function fifo.signal(f)
 end
 
 function fifo.get(f)
-	if not f.head then
+	while not f.head do
 		f.cond:wait()
 	end
 
@@ -21,7 +21,13 @@ function fifo.get(f)
 end
 
 function fifo.put(f, data)
-	f.head = { data = data, tail = f.head }
+	local tail = f.head
+	while tail and tail.tail do tail = tail.tail end
+	if tail then
+		tail.tail = { data = data }
+	else
+		f.head = { data = data }
+	end
 	fifo.signal(f)
 end