More fixes for Windows.

In particular, Windows does support many of the timer* macros, except timeradd
and timersub.

src/dropin.h

@@ -45,4 +45,22 @@ extern int gettimeofday(struct timeval *, void *);
 extern int usleep(long long usec);
 #endif
 
+#ifndef timeradd
+#define timeradd(a, b, r) do {\
+	(r)->tv_sec = (a)->tv_sec + (b)->tv_sec;\
+	(r)->tv_usec = (a)->tv_usec + (b)->tv_usec;\
+	if((r)->tv_usec >= 1000000)\
+		(r)->tv_sec++, (r)->tv_usec -= 1000000;\
+} while (0)
+#endif
+
+#ifndef timersub
+#define timersub(a, b, r) do {\
+	(r)->tv_sec = (a)->tv_sec - (b)->tv_sec;\
+	(r)->tv_usec = (a)->tv_usec - (b)->tv_usec;\
+	if((r)->tv_usec < 1000000)\
+		(r)->tv_sec--, (r)->tv_usec += 1000000;\
+} while (0)
+#endif
+
 #endif /* __DROPIN_H__ */

src/event.c

@@ -19,6 +19,7 @@
 
 #include "system.h"
 
+#include "dropin.h"
 #include "event.h"
 #include "net.h"
 #include "utils.h"

src/process.c

@@ -25,6 +25,7 @@
 #include "control.h"
 #include "device.h"
 #include "edge.h"
+#include "event.h"
 #include "logger.h"
 #include "net.h"
 #include "node.h"