[Tarantool-patches] [PATCH 2/8] fakesys: introduce fakeev_timer_remaining()

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

ev_timer_remaining() in libev returns number of seconds until the
timer will expire. It is used in raft code.

Raft is going to be tested using fakesys, and it means it needs
fakeev analogue of ev_timer_remaining().

Part of #5303
---
 src/lib/fakesys/fakeev.c | 10 ++++++++++
 src/lib/fakesys/fakeev.h |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/src/lib/fakesys/fakeev.c b/src/lib/fakesys/fakeev.c
index 8273c7ca8..715bf7b75 100644
--- a/src/lib/fakesys/fakeev.c
+++ b/src/lib/fakesys/fakeev.c
@@ -282,6 +282,16 @@ fakeev_timer_start(struct ev_loop *loop, struct ev_timer *base)
 	fakeev_timer_event_new((struct ev_watcher *)base, base->at);
 }
 
+double
+fakeev_timer_remaining(struct ev_loop *loop, struct ev_timer *base)
+{
+	(void)loop;
+	struct fakeev_event *e = fakeev_event_by_ev((struct ev_watcher *)base);
+	if (e == NULL)
+		return base->at;
+	return e->deadline - fakeev_time();
+}
+
 void
 fakeev_timer_again(struct ev_loop *loop, struct ev_timer *base)
 {
diff --git a/src/lib/fakesys/fakeev.h b/src/lib/fakesys/fakeev.h
index 89954b2e1..6d1c4dcd1 100644
--- a/src/lib/fakesys/fakeev.h
+++ b/src/lib/fakesys/fakeev.h
@@ -99,6 +99,10 @@ fakeev_loop(void);
 void
 fakeev_timer_start(struct ev_loop *loop, struct ev_timer *base);
 
+/** Emulator of raft_ev_timer_remaining(). */
+double
+fakeev_timer_remaining(struct ev_loop *loop, struct ev_timer *base);
+
 /** Emulator of ev_timer_again(). */
 void
 fakeev_timer_again(struct ev_loop *loop, struct ev_timer *base);
-- 
2.24.3 (Apple Git-128)