conntrackd: reduce the number of gettimeofday() syscalls

This patch reduces the number of gettimeofday syscalls by caching
the current time in a variable at the beginning of the main loop.
Based on a suggestion from Vincent Jardin.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/date.h b/include/date.h
new file mode 100644
index 0000000..296b996
--- /dev/null
+++ b/include/date.h
@@ -0,0 +1,10 @@
+#ifndef _DATE_H_
+#define _DATE_H_
+
+#include <sys/time.h>
+
+int do_gettimeofday(void);
+void gettimeofday_cached(struct timeval *tv);
+int time_cached(void);
+
+#endif