Changeset 163eccd7 in mainline

Timestamp:

2026-08-14T11:55:35Z (27 hours ago)

Author:

Matěj Volf <git@…>

Children:

6b1d0879

Parents:

48cc66f

git-author:

Matěj Volf <git@…> (2025-11-05 22:08:49)

git-committer:

Matěj Volf <git@…> (2026-08-14 11:55:35)

Message:

add CLOCK_MONOTONIC implementation using uptime

Location:

uspace/lib/posix

Files:

• include/posix/time.h (modified) (1 diff)
• src/time.c (modified) (5 diffs)

uspace/lib/posix/include/posix/time.h

@@ -42 +42 @@
 
 #define CLOCK_REALTIME ((clockid_t) 0)
+#define CLOCK_MONOTONIC ((clockid_t) 1)
 
 #define ASCTIME_BUF_LEN  26

uspace/lib/posix/src/time.c

@@ -206 +206 @@
 
 /**
- * Get clock resolution. Only CLOCK_REALTIME is supported.
+ * Get clock resolution.
  *
  * @param clock_id Clock ID.
@@ -218 +218 @@
         switch (clock_id) {
         case CLOCK_REALTIME:
+        case CLOCK_MONOTONIC:
                 res->tv_sec = 0;
                 res->tv_nsec = USEC2NSEC(1); /* Microsecond resolution. */
@@ -228 +229 @@
 
 /**
- * Get time. Only CLOCK_REALTIME is supported.
+ * Get time.
  *
  * @param clock_id ID of the clock to query.
@@ -246 +247 @@
                 tp->tv_nsec = USEC2NSEC(tv.tv_usec);
                 return 0;
+        case CLOCK_MONOTONIC:
+                getuptime(tp);
+                return 0;
         default:
                 errno = EINVAL;
@@ -267 +271 @@
         switch (clock_id) {
         case CLOCK_REALTIME:
+        case CLOCK_MONOTONIC:
                 // TODO: setting clock
                 // FIXME: HelenOS doesn't actually support hardware