win32: implement nanosleep and enable float sleep by default

Don't expect sleeping for fractions of a second to be very accurate.

1 files changed, 18 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 23ca5d3dd..1170cd9d5 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -452,6 +452,24 @@ unsigned int sleep (unsigned int seconds)
         return 0;
 }
 
+int nanosleep(const struct timespec *req, struct timespec *rem)
+{
+        if (req->tv_nsec < 0 || 1000000000 <= req->tv_nsec) {
+                errno = EINVAL;
+                return -1;
+        }
+
+        Sleep(req->tv_sec*1000 + req->tv_nsec/1000000);
+
+        /* Sleep is not interruptible.  So there is no remaining delay.  */
+        if (rem != NULL) {
+                rem->tv_sec = 0;
+                rem->tv_nsec = 0;
+        }
+
+        return 0;
+}
+
 /*
  * Windows' mktemp returns NULL on error whereas POSIX always returns the
  * template and signals an error by making it an empty string.