Add monotime functions for clearing monotonic times

We need this to replace some of our "msec" users with monotime
users.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/common/compat_time.h b/src/common/compat_time.h
index bcf469e270..68c11fb608 100644
--- a/src/common/compat_time.h
+++ b/src/common/compat_time.h
@@ -105,6 +105,15 @@ uint64_t monotime_absolute_usec(void);
  */
 uint64_t monotime_absolute_msec(void);
 
+/**
+ * Set <b>out</b> to zero.
+ */
+void monotime_zero(monotime_t *out);
+/**
+ * Return true iff <b>out</b> is zero
+ */
+int monotime_is_zero(const monotime_t *out);
+
 #if defined(MONOTIME_COARSE_FN_IS_DIFFERENT)
 /**
  * Set <b>out</b> to the current coarse time.
@@ -144,10 +153,14 @@ int64_t monotime_coarse_diff_usec(const monotime_coarse_t *start,
     const monotime_coarse_t *end);
 int64_t monotime_coarse_diff_msec(const monotime_coarse_t *start,
     const monotime_coarse_t *end);
+void monotime_coarse_zero(monotime_coarse_t *out);
+int monotime_coarse_is_zero(const monotime_coarse_t *val);
 #else /* !(defined(MONOTIME_COARSE_TYPE_IS_DIFFERENT)) */
 #define monotime_coarse_diff_nsec monotime_diff_nsec
 #define monotime_coarse_diff_usec monotime_diff_usec
 #define monotime_coarse_diff_msec monotime_diff_msec
+#define monotime_coarse_zero monotime_zero
+#define monotime_coarse_is_zero monotime_is_zero
 #endif /* defined(MONOTIME_COARSE_TYPE_IS_DIFFERENT) */
 
 void tor_gettimeofday(struct timeval *timeval);