1 files changed, 43 insertions, 0 deletions
diff --git a/src/os/win32/ngx_socket.h b/src/os/win32/ngx_socket.h
index a9e26c295..f8a453d56 100644
--- a/src/os/win32/ngx_socket.h
+++ b/src/os/win32/ngx_socket.h
@@ -200,6 +200,49 @@ extern LPFN_CONNECTEX             ngx_connectex;
 extern LPFN_DISCONNECTEX          ngx_disconnectex;
 
 
+#if (NGX_HAVE_POLL && !defined POLLIN)
+
+/*
+ * WSAPoll() is only available if _WIN32_WINNT >= 0x0600.
+ * If it is not available during compilation, we try to
+ * load it dynamically at runtime.
+ */
+
+#define NGX_LOAD_WSAPOLL 1
+
+#define POLLRDNORM  0x0100
+#define POLLRDBAND  0x0200
+#define POLLIN      (POLLRDNORM | POLLRDBAND)
+#define POLLPRI     0x0400
+
+#define POLLWRNORM  0x0010
+#define POLLOUT     (POLLWRNORM)
+#define POLLWRBAND  0x0020
+
+#define POLLERR     0x0001
+#define POLLHUP     0x0002
+#define POLLNVAL    0x0004
+
+typedef struct pollfd {
+
+    SOCKET  fd;
+    SHORT   events;
+    SHORT   revents;
+
+} WSAPOLLFD, *PWSAPOLLFD, FAR *LPWSAPOLLFD;
+
+typedef int (WSAAPI *ngx_wsapoll_pt)(
+    LPWSAPOLLFD fdArray,
+    ULONG fds,
+    INT timeout
+    );
+
+extern ngx_wsapoll_pt             WSAPoll;
+extern ngx_uint_t                 ngx_have_wsapoll;
+
+#endif
+
+
 int ngx_tcp_push(ngx_socket_t s);
 #define ngx_tcp_push_n            "tcp_push()"