Add new stats type: descriptor fetch stats

This is used for the bridge authority currently, to get a better
intuition on how many descriptors are actually fetched from it and how
many fetches happen in total.

Implements ticket 4200.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/or/rephist.h b/src/or/rephist.h
index e590659441..0a3e46ae1a 100644
--- a/src/or/rephist.h
+++ b/src/or/rephist.h
@@ -82,6 +82,11 @@ void rep_hist_add_buffer_stats(double mean_num_cells_in_queue,
 char *rep_hist_format_buffer_stats(time_t now);
 void rep_hist_reset_buffer_stats(time_t now);
 
+void rep_hist_desc_stats_init(time_t now);
+void rep_hist_note_desc_served(const char * desc);
+void rep_hist_desc_stats_term(void);
+time_t rep_hist_desc_stats_write(time_t now);
+
 void rep_hist_conn_stats_init(time_t now);
 void rep_hist_note_or_conn_bytes(uint64_t conn_id, size_t num_read,
                                  size_t num_written, time_t when);