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 <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-06-22 10:38:53 -04:00
parent 34fa087036
commit 03ed85a6c0
3 changed files with 20 additions and 1 deletions

View File

@ -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)

View File

@ -115,6 +115,9 @@ struct stream_fifo {
/* number of streams in this fifo */
_Atomic size_t count;
#if defined DEV_BUILD
_Atomic size_t max_count;
#endif
struct stream *head;
struct stream *tail;

View File

@ -939,6 +939,11 @@ static void zebra_show_client_detail(struct vty *vty, struct zserv *client)
vty_out(vty, "MAC-IP add notifications: %d\n", client->macipadd_cnt);
vty_out(vty, "MAC-IP delete notifications: %d\n", client->macipdel_cnt);
#if defined DEV_BUILD
vty_out(vty, "Input Fifo: %zu:%zu Output Fifo: %zu:%zu\n",
client->ibuf_fifo->count, client->ibuf_fifo->max_count,
client->obuf_fifo->count, client->obuf_fifo->max_count);
#endif
vty_out(vty, "\n");
return;
}