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-rw-r--r--include/usleep.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/usleep.h b/include/usleep.h
new file mode 100644
index 0000000..f64477c
--- /dev/null
+++ b/include/usleep.h
@@ -0,0 +1,18 @@
+#ifndef UTIL_LINUX_USLEEP_H
+#define UTIL_LINUX_USLEEP_H
+
+#ifndef HAVE_USLEEP
+/*
+ * This function is marked obsolete in POSIX.1-2001 and removed in
+ * POSIX.1-2008. It is replaced with nanosleep().
+ */
+# define usleep(x) \
+ do { \
+ struct timespec xsleep; \
+ xsleep.tv_sec = x / 1000 / 1000; \
+ xsleep.tv_nsec = (x - xsleep.tv_sec * 1000 * 1000) * 1000; \
+ nanosleep(&xsleep, NULL); \
+ } while (0)
+#endif
+
+#endif /* UTIL_LINUX_USLEEP_H */