From 03ed85a6c065896c9377db173745c511ea40bdcb Mon Sep 17 00:00:00 2001 From: Donald Sharp Date: Fri, 22 Jun 2018 10:38:53 -0400 Subject: lib, zebra: Add a bit of code to look at fifo When in a dev build add a bit of code to track max depth of a fifo and to allow zebra to report on it. Signed-off-by: Donald Sharp --- lib/stream.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'lib/stream.c') diff --git a/lib/stream.c b/lib/stream.c index aba4c20166..a172eedc99 100644 --- a/lib/stream.c +++ b/lib/stream.c @@ -1109,6 +1109,10 @@ struct stream_fifo *stream_fifo_new(void) /* Add new stream to fifo. */ void stream_fifo_push(struct stream_fifo *fifo, struct stream *s) { +#if defined DEV_BUILD + size_t max, curmax; +#endif + if (fifo->tail) fifo->tail->next = s; else @@ -1116,8 +1120,15 @@ void stream_fifo_push(struct stream_fifo *fifo, struct stream *s) fifo->tail = s; fifo->tail->next = NULL; - +#if !defined DEV_BUILD atomic_fetch_add_explicit(&fifo->count, 1, memory_order_release); +#else + max = atomic_fetch_add_explicit(&fifo->count, 1, memory_order_release); + curmax = atomic_load_explicit(&fifo->max_count, memory_order_relaxed); + if (max > curmax) + atomic_store_explicit(&fifo->max_count, max, + memory_order_relaxed); +#endif } void stream_fifo_push_safe(struct stream_fifo *fifo, struct stream *s) -- cgit v1.2.3