[PATCH 2/5] time: Implement c23 timespec_get base

[Yonggang Luo <luoyonggang@gmail.com>]

These newly implement base are:
#define TIME_MONOTONIC          2
#define TIME_PROCESS_CPUTIME_ID 3
#define TIME_THREAD_CPUTIME_ID  4
#define TIME_MONOTONIC_RAW      5
#define TIME_REALTIME_COARSE    6
#define TIME_MONOTONIC_COARSE   7
#define TIME_BOOTTIME           8
#define TIME_REALTIME_ALARM     9
#define TIME_BOOTTIME_ALARM     10
#define TIME_SGI_CYCLE          11
#define TIME_TAI                12

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
---
 time/time.h         | 13 ++++++++++++
 time/timespec_get.c | 48 ++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 58 insertions(+), 3 deletions(-)

diff --git a/time/time.h b/time/time.h
index 368f4dc588..189a560199 100644
--- a/time/time.h
+++ b/time/time.h
@@ -64,6 +64,19 @@ typedef __pid_t pid_t;
 /* Time base values for timespec_get.  */
 # define TIME_UTC 1
 #endif
+#ifdef __GLIBC_USE_ISOC23
+#define TIME_MONOTONIC          2
+#define TIME_PROCESS_CPUTIME_ID 3
+#define TIME_THREAD_CPUTIME_ID  4
+#define TIME_MONOTONIC_RAW      5
+#define TIME_REALTIME_COARSE    6
+#define TIME_MONOTONIC_COARSE   7
+#define TIME_BOOTTIME           8
+#define TIME_REALTIME_ALARM     9
+#define TIME_BOOTTIME_ALARM     10
+#define TIME_SGI_CYCLE          11
+#define TIME_TAI                12
+#endif
 
 __BEGIN_DECLS
 
diff --git a/time/timespec_get.c b/time/timespec_get.c
index 9b1d4f22ed..a57b1ee0b8 100644
--- a/time/timespec_get.c
+++ b/time/timespec_get.c
@@ -22,10 +22,52 @@
 int
 timespec_get (struct timespec *ts, int base)
 {
-  if (base == TIME_UTC)
+	clockid_t clockid = -1;
+	switch (base) {
+	default:
+		break;
+	case TIME_UTC:
+		clockid = CLOCK_REALTIME;
+		break;
+	case TIME_MONOTONIC:
+		clockid = CLOCK_MONOTONIC;
+		break;
+	case TIME_PROCESS_CPUTIME_ID:
+		clockid = CLOCK_PROCESS_CPUTIME_ID;
+		break;
+	case TIME_THREAD_CPUTIME_ID:
+		clockid = CLOCK_THREAD_CPUTIME_ID;
+		break;
+	case TIME_MONOTONIC_RAW:
+		clockid = CLOCK_MONOTONIC_RAW;
+		break;
+	case TIME_REALTIME_COARSE:
+		clockid = CLOCK_REALTIME_COARSE;
+		break;
+	case TIME_MONOTONIC_COARSE:
+		clockid = CLOCK_MONOTONIC_COARSE;
+		break;
+	case TIME_BOOTTIME:
+		clockid = CLOCK_BOOTTIME;
+		break;
+	case TIME_REALTIME_ALARM:
+		clockid = CLOCK_REALTIME_ALARM;
+		break;
+	case TIME_BOOTTIME_ALARM:
+		clockid = CLOCK_BOOTTIME_ALARM;
+		break;
+	case TIME_SGI_CYCLE:
+		clockid = CLOCK_SGI_CYCLE;
+		break;
+	case TIME_TAI:
+		clockid = CLOCK_TAI;
+		break;
+	}
+  if (clockid >= 0)
     {
-      __clock_gettime (CLOCK_REALTIME, ts);
-      return base;
+      if (__clock_gettime (clockid, ts) >= 0) {
+        return base;
+      }
     }
   return 0;
 }
-- 
2.39.0.windows.1