From: Toke Høiland-Jørgensen <toke@toke.dk>
Date: Thu, 1 Jun 2023 22:26:41 +0000 (+0200)
Subject: IO: Add current_time_now() function for immediate timestamp
X-Git-Tag: v2.14~107
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8cf3cad5104ab7a9887397b2a34d94c8a5f2aef;p=thirdparty%2Fbird.git

IO: Add current_time_now() function for immediate timestamp

Add a current_time_now() function which gets an immediate monotonic
timestamp instead of using the cached value from the event loop. This is
useful for callers that need precise times, such as the Babel RTT
measurement code.

Minor changes by committer.
---

diff --git a/lib/timer.h b/lib/timer.h
index c5ea430cd..0f87852bd 100644
--- a/lib/timer.h
+++ b/lib/timer.h
@@ -46,6 +46,9 @@ extern struct timeloop main_timeloop;
 btime current_time(void);
 btime current_real_time(void);
 
+/* In sysdep code */
+btime current_time_now(void);
+
 //#define now (current_time() TO_S)
 //#define now_real (current_real_time() TO_S)
 extern btime boot_time;
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index e131ca41f..6aedcfb66 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -171,6 +171,19 @@ times_update_real_time(struct timeloop *loop)
   loop->real_time = ts.tv_sec S + ts.tv_nsec NS;
 }
 
+btime
+current_time_now(void)
+{
+  struct timespec ts;
+  int rv;
+
+  rv = clock_gettime(CLOCK_MONOTONIC, &ts);
+  if (rv < 0)
+    die("clock_gettime: %m");
+
+  return ts.tv_sec S + ts.tv_nsec NS;
+}
+
 
 /**
  * DOC: Sockets