Use monotonically-increasing time stamps. Fixes #150

r-lib · Jun 29, 2021 · 90a89e0 · 90a89e0
1 parent 9096d0c
commit 90a89e0
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/timestamp_unix.cpp b/src/timestamp_unix.cpp
@@ -5,9 +5,9 @@
 #include "timeconv.h"
 
 void get_current_time(timespec *ts) {
-  timeval tv;
-  gettimeofday(&tv, NULL);
-  *ts = timevalToTimespec(tv);
+  // CLOCK_MONOTONIC ensures that we never get timestamps that go backward in
+  // time due to clock adjustment. https://github.com/r-lib/later/issues/150
+  clock_gettime(CLOCK_MONOTONIC, ts);
 }
 
 class TimestampImplPosix : public TimestampImpl {