Move a couple of time-related modules into wsutil.

A bunch of files didn't really need to include these header files so remove
the include line rather than changing it.

svn path=/trunk/; revision=50154

1 files changed, 115 insertions, 0 deletions

diff --git a/wsutil/nstime.h b/wsutil/nstime.h
new file mode 100644
index 0000000000..01fd469b62
--- /dev/null
+++ b/wsutil/nstime.h
@@ -0,0 +1,115 @@
+/* nstime.h
+ * Definition of data structure to hold time values with nanosecond resolution
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __NSTIME_H__
+#define __NSTIME_H__
+
+#include <time.h>
+
+#include <wiretap/wtap.h>
+#include "ws_symbol_export.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @file
+ * Definition of data structure to hold time values with nanosecond resolution
+ */
+
+/** data structure to hold time values with nanosecond resolution*/
+typedef struct {
+	time_t	secs;
+	int	nsecs;
+} nstime_t;
+
+/* functions */
+
+/** set the given nstime_t to zero */
+WS_DLL_PUBLIC void nstime_set_zero(nstime_t *nstime);
+
+/** is the given nstime_t currently zero? */
+WS_DLL_PUBLIC gboolean nstime_is_zero(nstime_t *nstime);
+
+/** set the given nstime_t to (0,maxint) to mark it as "unset"
+ * That way we can find the first frame even when a timestamp
+ * is zero (fix for bug 1056)
+ */
+WS_DLL_PUBLIC void nstime_set_unset(nstime_t *nstime);
+
+/* is the given nstime_t currently (0,maxint)? */
+WS_DLL_PUBLIC gboolean nstime_is_unset(nstime_t *nstime);
+
+/** duplicate the current time
+ *
+ * a = b
+ */
+WS_DLL_PUBLIC void nstime_copy(nstime_t *a, const nstime_t *b);
+
+/** calculate the delta between two times (can be negative!)
+ *
+ * delta = b-a
+ *
+ * Note that it is acceptable for two or more of the arguments to point at the
+ * same structure.
+ */
+WS_DLL_PUBLIC void nstime_delta(nstime_t *delta, const nstime_t *b, const nstime_t *a );
+
+/** calculate the sum of two times
+ *
+ * sum = a+b
+ *
+ * Note that it is acceptable for two or more of the arguments to point at the
+ * same structure.
+ */
+WS_DLL_PUBLIC void nstime_sum(nstime_t *sum, const nstime_t *b, const nstime_t *a );
+
+/** sum += a */
+#define nstime_add(sum, a) nstime_sum(sum, sum, a)
+
+/** sum -= a */
+#define nstime_subtract(sum, a) nstime_delta(sum, sum, a)
+
+/** compare two times are return a value similar to memcmp() or strcmp().
+ *
+ * a > b : > 0
+ * a = b : 0
+ * a < b : < 0
+ */
+WS_DLL_PUBLIC int nstime_cmp (const nstime_t *a, const nstime_t *b );
+
+/** converts nstime to double, time base is milli seconds */
+WS_DLL_PUBLIC double nstime_to_msec(const nstime_t *nstime);
+
+/** converts nstime to double, time base is seconds */
+WS_DLL_PUBLIC double nstime_to_sec(const nstime_t *nstime);
+
+/** converts wtap_nstime to double, time base is seconds */
+WS_DLL_PUBLIC double wtap_nstime_to_sec(const struct wtap_nstime *nstime);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __NSTIME_H__  */