diff --git a/util/millisleep.h b/util/millisleep.h
new file mode 100644
index 00000000..fb9c302f
--- /dev/null
+++ b/util/millisleep.h
@@ -0,0 +1,23 @@
+#ifndef MILLISLEEP_H_
+#define MILLISLEEP_H_
+
+#include <stddef.h>
+
+#include <time.h>
+
+/**
+ * millisleep(msec):
+ * Wait up to ${msec} milliseconds.  This duration can be interrupted by
+ * signals.
+ */
+static inline void
+millisleep(size_t msec)
+{
+	struct timespec ts;
+
+	ts.tv_sec = msec / 1000;
+	ts.tv_nsec = (msec % 1000) * 1000000;
+	nanosleep(&ts, NULL);
+}
+
+#endif /* !MILLISLEEP_H_ */