1 files changed, 51 insertions, 0 deletions
diff --git a/lib/timeval.h b/lib/timeval.h
new file mode 100644
index 000000000..8e10ad360
--- /dev/null
+++ b/lib/timeval.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2008, 2009 Nicira Networks.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef TIMEVAL_H
+#define TIMEVAL_H 1
+
+#include <time.h>
+#include "type-props.h"
+#include "util.h"
+
+struct pollfd;
+struct timeval;
+
+/* POSIX allows floating-point time_t, but we don't support it. */
+BUILD_ASSERT_DECL(TYPE_IS_INTEGER(time_t));
+
+/* We do try to cater to unsigned time_t, but I want to know about it if we
+ * ever encounter such a platform. */
+BUILD_ASSERT_DECL(TYPE_IS_SIGNED(time_t));
+
+#define TIME_MAX TYPE_MAXIMUM(time_t)
+#define TIME_MIN TYPE_MINIMUM(time_t)
+
+/* Interval between updates to the time reported by time_gettimeofday(), in ms.
+ * This should not be adjusted much below 10 ms or so with the current
+ * implementation, or too much time will be wasted in signal handlers and calls
+ * to time(0). */
+#define TIME_UPDATE_INTERVAL 100
+
+void time_init(void);
+void time_refresh(void);
+time_t time_now(void);
+long long int time_msec(void);
+void time_timeval(struct timeval *);
+void time_alarm(unsigned int secs);
+int time_poll(struct pollfd *, int n_pollfds, int timeout);
+
+#endif /* timeval.h */