[musl] [PATCH v3 4/5] c23: Implement newly base for timespec_get

[Yonggang Luo <luoyonggang@gmail.com>]

These are implemented https://gustedt.gitlabpages.inria.fr/c23-library/#time_monotonic-time_active-time_thread_active

with:

#define TIME_UTC                1
#define TIME_MONOTONIC          2
#define TIME_ACTIVE             3
#define TIME_THREAD_ACTIVE      4
#define TIME_MONOTONIC_RAW      5
#define TIME_UTC_COARSE         6
#define TIME_MONOTONIC_COARSE   7
#define TIME_BOOTTIME           8
#define TIME_UTC_ALARM          9
#define TIME_BOOTTIME_ALARM     10
#define TIME_SGI_CYCLE          11
#define TIME_TAI                12

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
---
 include/time.h          | 13 +++++++++++-
 src/time/timespec_get.c | 44 +++++++++++++++++++++++++++++++++++++++--
 2 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/include/time.h b/include/time.h
index 3d948372..ab31d373 100644
--- a/include/time.h
+++ b/include/time.h
@@ -64,7 +64,18 @@ int timespec_get(struct timespec *, int);
 
 #define CLOCKS_PER_SEC 1000000L
 
-#define TIME_UTC 1
+#define TIME_UTC                1
+#define TIME_MONOTONIC          2
+#define TIME_ACTIVE             3
+#define TIME_THREAD_ACTIVE      4
+#define TIME_MONOTONIC_RAW      5
+#define TIME_UTC_COARSE         6
+#define TIME_MONOTONIC_COARSE   7
+#define TIME_BOOTTIME           8
+#define TIME_UTC_ALARM          9
+#define TIME_BOOTTIME_ALARM     10
+#define TIME_SGI_CYCLE          11
+#define TIME_TAI                12
 
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
diff --git a/src/time/timespec_get.c b/src/time/timespec_get.c
index 40ea9c1c..b8738189 100644
--- a/src/time/timespec_get.c
+++ b/src/time/timespec_get.c
@@ -4,7 +4,47 @@
  * are considered erroneous. */
 int timespec_get(struct timespec * ts, int base)
 {
-	if (base != TIME_UTC) return 0;
-	int ret = __clock_gettime(CLOCK_REALTIME, ts);
+	clockid_t clockid = -1;
+	switch (base) {
+	default:
+		return 0;
+	case TIME_UTC:
+		clockid = CLOCK_REALTIME;
+		break;
+	case TIME_MONOTONIC:
+		clockid = CLOCK_MONOTONIC;
+		break;
+	case TIME_ACTIVE:
+		clockid = CLOCK_PROCESS_CPUTIME_ID;
+		break;
+	case TIME_THREAD_ACTIVE:
+		clockid = CLOCK_THREAD_CPUTIME_ID;
+		break;
+	case TIME_MONOTONIC_RAW:
+		clockid = CLOCK_MONOTONIC_RAW;
+		break;
+	case TIME_UTC_COARSE:
+		clockid = CLOCK_REALTIME_COARSE;
+		break;
+	case TIME_MONOTONIC_COARSE:
+		clockid = CLOCK_MONOTONIC_COARSE;
+		break;
+	case TIME_BOOTTIME:
+		clockid = CLOCK_BOOTTIME;
+		break;
+	case TIME_UTC_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;
+	}
+	int ret = __clock_gettime(clockid, ts);
 	return ret < 0 ? 0 : base;
 }
-- 
2.39.0.windows.1