Start to opentracker's memory requirements

* peer lists for v4 and v6 are now lazily allocated and, more importantly, will be freed once there are no more peers
* The downloaded count is now per torrent and not per peer list anymore, moving in what was alignment loss, anyway
* The (now) per torrent downloaded and the per peer list peer and seed count shrunk from size_t to uint32_t
* A helper guards accesses to the peer and seed count to prevent null pointer dereferences
* The base time also shrank from time_t to uint32_t, minutes since the epoch currently fits in 25 bits

1 files changed, 3 insertions, 5 deletions

diff --git a/tests/t_clean.c b/tests/t_clean.c
index 7eca9aa..2fadd03 100644
--- a/tests/t_clean.c
+++ b/tests/t_clean.c
@@ -11,7 +11,7 @@
 #include "trackerlogic.h"
 #include "test.h"
 
-/* A clock stepped backwards used to leave peer_list->base in the future, so
+/* A clock stepped backwards used to leave the torrent's base in the future, so
    the span the cleaner works from came out negative. It was then added to a
    peer's age and stored in the single byte that age lives in, where -1 reads
    as 255 and the next pass threw the whole swarm away. */
@@ -60,14 +60,12 @@ static ot_torrent *torrent_of(ot_hash *hash) {
 
 /* What a clock stepped back by `minutes` leaves behind */
 static void step_clock_back(ot_torrent *torrent, int minutes) {
-  torrent->peer_list6->base += minutes;
-  torrent->peer_list4->base += minutes;
+  torrent->base += minutes;
 }
 
 /* What the next minute of a well behaved clock looks like */
 static void age_by_a_minute(ot_torrent *torrent) {
-  torrent->peer_list6->base -= 1;
-  torrent->peer_list4->base -= 1;
+  torrent->base -= 1;
 }
 
 static void case_a_clock_that_went_back_keeps_the_swarm(void) {