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/unistd/ualarm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/unistd/ualarm.c

(limited to 'src/unistd/ualarm.c')

diff --git a/src/unistd/ualarm.c b/src/unistd/ualarm.c
new file mode 100644
index 0000000..2985855
--- /dev/null
+++ b/src/unistd/ualarm.c
@@ -0,0 +1,13 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <sys/time.h>
+
+unsigned ualarm(unsigned value, unsigned interval)
+{
+	struct itimerval it = {
+		.it_interval.tv_usec = interval,
+		.it_value.tv_usec = value
+	}, it_old;
+	setitimer(ITIMER_REAL, &it, &it_old);
+	return it_old.it_value.tv_sec*1000000 + it_old.it_value.tv_usec;
+}
-- 
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