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From 8fe5d9138039aafd314340b12d6d586d657d53a7 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 29 Jun 2016 19:03:26 -0700
Subject: [PATCH] sd-event: expose the event loop iteration counter via
sd_event_get_iteration()
This extends the existing event loop iteration counter to 64bit, and exposes it
via a new function sd_event_get_iteration(). This is helpful for cases like
issue #3612. After all, since we maintain the counter anyway, we might as well
expose it.
(This also fixes an unrelated issue in the man page for sd_event_wait() where
micro and milliseconds got mixed up)
Cherry-picked from: 7486322b99da5b4d2d00d35b310b035f936f7964
Related: #1342173
---
src/libsystemd/sd-event/sd-event.c | 14 +++++++++++---
src/systemd/sd-event.h | 1 +
2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
index 1f1e6fe917..9d48e5a490 100644
--- a/src/libsystemd/sd-event/sd-event.c
+++ b/src/libsystemd/sd-event/sd-event.c
@@ -76,8 +76,8 @@ struct sd_event_source {
int64_t priority;
unsigned pending_index;
unsigned prepare_index;
- unsigned pending_iteration;
- unsigned prepare_iteration;
+ uint64_t pending_iteration;
+ uint64_t prepare_iteration;
LIST_FIELDS(sd_event_source, sources);
@@ -169,7 +169,7 @@ struct sd_event {
pid_t original_pid;
- unsigned iteration;
+ uint64_t iteration;
dual_timestamp timestamp;
usec_t timestamp_boottime;
int state;
@@ -2689,3 +2689,11 @@ _public_ int sd_event_get_watchdog(sd_event *e) {
return e->watchdog;
}
+
+_public_ int sd_event_get_iteration(sd_event *e, uint64_t *ret) {
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ *ret = e->iteration;
+ return 0;
+}
diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
index 25a10f99ab..4957f3a327 100644
--- a/src/systemd/sd-event.h
+++ b/src/systemd/sd-event.h
@@ -101,6 +101,7 @@ int sd_event_get_tid(sd_event *e, pid_t *tid);
int sd_event_get_exit_code(sd_event *e, int *code);
int sd_event_set_watchdog(sd_event *e, int b);
int sd_event_get_watchdog(sd_event *e);
+int sd_event_get_iteration(sd_event *e, uint64_t *ret);
sd_event_source* sd_event_source_ref(sd_event_source *s);
sd_event_source* sd_event_source_unref(sd_event_source *s);