+#define http_sleep(s) _http_sleep(s)
+static inline void _http_sleep(double s)
+{
+#define HTTP_DIFFSEC (0.001)
+#define HTTP_MLLISEC (1000)
+#define HTTP_MCROSEC (1000 * 1000)
+#define HTTP_NANOSEC (1000 * 1000 * 1000)
+#define HTTP_MSEC(s) (s * HTTP_MLLISEC)
+#define HTTP_USEC(s) (s * HTTP_MCROSEC)
+#define HTTP_NSEC(s) (s * HTTP_NANOSEC)
+
+#if defined(PHP_WIN32)
+ Sleep((DWORD) HTTP_MSEC(s));
+#elif defined(HAVE_USLEEP)
+ usleep(HTTP_USEC(s));
+#elif defined(HAVE_NANOSLEEP)
+ struct timespec req, rem;
+
+ req.tv_sec = (time_t) s;
+ req.tv_nsec = HTTP_NSEC(s) % HTTP_NANOSEC;
+
+ while (nanosleep(&req, &rem) && (errno == EINTR) && (HTTP_NSEC(rem.tv_sec) + rem.tv_nsec) > HTTP_NSEC(HTTP_DIFFSEC))) {
+ req.tv_sec = rem.tv_sec;
+ req.tv_nsec = rem.tv_nsec;
+ }
+#else
+ struct timeval timeout;
+
+ timeout.tv.sec = (time_t) s;
+ timeout.tv_usec = HTTP_USEC(s) % HTTP_MCROSEC;
+
+ select(0, NULL, NULL, NULL, &timeout);
+#endif
+}
+