tools/nolibc: Implement msleep()

Allow users to implement shorter delays than a full second by implementing
msleep().

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 13c194aeaf3f0267d260d6f8b10f0f8fd1281d43..3430667b0d241dd02250ecf7819441ac81794086 100644 (file)
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -2243,6 +2243,19 @@ unsigned int sleep(unsigned int seconds)
                return 0;
 }
 
+static __attribute__((unused))
+int msleep(unsigned int msecs)
+{
+       struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
+
+       if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
+               return (my_timeval.tv_sec * 1000) +
+                       (my_timeval.tv_usec / 1000) +
+                       !!(my_timeval.tv_usec % 1000);
+       else
+               return 0;
+}
+
 static __attribute__((unused))
 int stat(const char *path, struct stat *buf)
 {