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From 8fe5d9138039aafd314340b12d6d586d657d53a7 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Wed, 29 Jun 2016 19:03:26 -0700
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Subject: [PATCH] sd-event: expose the event loop iteration counter via
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sd_event_get_iteration()
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This extends the existing event loop iteration counter to 64bit, and exposes it
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via a new function sd_event_get_iteration(). This is helpful for cases like
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issue #3612. After all, since we maintain the counter anyway, we might as well
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expose it.
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(This also fixes an unrelated issue in the man page for sd_event_wait() where
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micro and milliseconds got mixed up)
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Cherry-picked from: 7486322b99da5b4d2d00d35b310b035f936f7964
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Related: #1342173
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---
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src/libsystemd/sd-event/sd-event.c | 14 +++++++++++---
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src/systemd/sd-event.h | 1 +
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2 files changed, 12 insertions(+), 3 deletions(-)
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diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
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index 1f1e6fe..9d48e5a 100644
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--- a/src/libsystemd/sd-event/sd-event.c
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+++ b/src/libsystemd/sd-event/sd-event.c
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@@ -76,8 +76,8 @@ struct sd_event_source {
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int64_t priority;
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unsigned pending_index;
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unsigned prepare_index;
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- unsigned pending_iteration;
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- unsigned prepare_iteration;
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+ uint64_t pending_iteration;
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+ uint64_t prepare_iteration;
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LIST_FIELDS(sd_event_source, sources);
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@@ -169,7 +169,7 @@ struct sd_event {
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pid_t original_pid;
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- unsigned iteration;
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+ uint64_t iteration;
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dual_timestamp timestamp;
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usec_t timestamp_boottime;
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int state;
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@@ -2689,3 +2689,11 @@ _public_ int sd_event_get_watchdog(sd_event *e) {
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return e->watchdog;
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}
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+
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+_public_ int sd_event_get_iteration(sd_event *e, uint64_t *ret) {
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+ assert_return(e, -EINVAL);
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+ assert_return(!event_pid_changed(e), -ECHILD);
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+
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+ *ret = e->iteration;
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+ return 0;
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+}
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diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
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index 25a10f9..4957f3a 100644
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--- a/src/systemd/sd-event.h
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+++ b/src/systemd/sd-event.h
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@@ -101,6 +101,7 @@ int sd_event_get_tid(sd_event *e, pid_t *tid);
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int sd_event_get_exit_code(sd_event *e, int *code);
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int sd_event_set_watchdog(sd_event *e, int b);
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int sd_event_get_watchdog(sd_event *e);
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+int sd_event_get_iteration(sd_event *e, uint64_t *ret);
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sd_event_source* sd_event_source_ref(sd_event_source *s);
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sd_event_source* sd_event_source_unref(sd_event_source *s);
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