From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/time/clock.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/time/clock.c

(limited to 'src/time/clock.c')

diff --git a/src/time/clock.c b/src/time/clock.c
new file mode 100644
index 0000000..6724012
--- /dev/null
+++ b/src/time/clock.c
@@ -0,0 +1,16 @@
+#include <time.h>
+#include <limits.h>
+
+clock_t clock()
+{
+	struct timespec ts;
+
+	if (__clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts))
+		return -1;
+
+	if (ts.tv_sec > LONG_MAX/1000000
+	 || ts.tv_nsec/1000 > LONG_MAX-1000000*ts.tv_sec)
+		return -1;
+
+	return ts.tv_sec*1000000 + ts.tv_nsec/1000;
+}
-- 
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