internal.h: added macros for polling mode detection

1 files changed, 55 insertions, 0 deletions

diff --git a/src/microhttpd/internal.h b/src/microhttpd/internal.h
index e9020cf9..adcc43da 100644
--- a/src/microhttpd/internal.h
+++ b/src/microhttpd/internal.h
@@ -149,6 +149,61 @@
 #endif /* ! MHD_STATICSTR_LEN_ */
 
 
+#if defined(HAVE_POLL) && defined(EPOLL_SUPPORT)
+/**
+ * Checks whether the @a d daemon is using select()
+ */
+#define MHD_D_USING_SELECT_(d) \
+  (0 == (d->options & (MHD_USE_POLL | MHD_USE_EPOLL)))
+/**
+ * Checks whether the @a d daemon is using poll()
+ */
+#define MHD_D_USING_POLL_(d) (0 != (d->options & MHD_USE_POLL))
+/**
+ * Checks whether the @a d daemon is using epoll
+ */
+#define MHD_D_USING_EPOLL_(d) (0 != (d->options & MHD_USE_EPOLL))
+#elif defined(HAVE_POLL)
+/**
+ * Checks whether the @a d daemon is using select()
+ */
+#define MHD_D_USING_SELECT_(d) (0 == (d->options & MHD_USE_POLL))
+/**
+ * Checks whether the @a d daemon is using poll()
+ */
+#define MHD_D_USING_POLL_(d) (0 != (d->options & MHD_USE_POLL))
+/**
+ * Checks whether the @a d daemon is using epoll
+ */
+#define MHD_D_USING_EPOLL_(d) (0)
+#elif defined(EPOLL_SUPPORT)
+/**
+ * Checks whether the @a d daemon is using select()
+ */
+#define MHD_D_USING_SELECT_(d) (0 == (d->options & MHD_USE_EPOLL))
+/**
+ * Checks whether the @a d daemon is using poll()
+ */
+#define MHD_D_USING_POLL_(d) (0)
+/**
+ * Checks whether the @a d daemon is using epoll
+ */
+#define MHD_D_USING_EPOLL_(d) (0 != (d->options & MHD_USE_EPOLL))
+#else  /* select() only */
+/**
+ * Checks whether the @a d daemon is using select()
+ */
+#define MHD_D_USING_SELECT_(d) (! 0)
+/**
+ * Checks whether the @a d daemon is using poll()
+ */
+#define MHD_D_USING_POLL_(d) (0)
+/**
+ * Checks whether the @a d daemon is using epoll
+ */
+#define MHD_D_USING_EPOLL_(d) (0)
+#endif /* select() only */
+
 /**
  * Tri-state on/off/unknown
  */