1 files changed, 99 insertions, 0 deletions
diff --git a/src/global/msg_stats.h b/src/global/msg_stats.h
new file mode 100644
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+++ b/src/global/msg_stats.h
@@ -0,0 +1,99 @@
+#ifndef _MSG_STATS_H_INCLUDED_
+#define _MSG_STATS_H_INCLUDED_
+
+/*++
+/* NAME
+/*	msg_stats 3h
+/* SUMMARY
+/*	message delivery profiling
+/* SYNOPSIS
+/*	#include <msg_stats.h>
+/* DESCRIPTION
+/* .nf
+
+ /*
+  * System library.
+  */
+#include <sys/time.h>
+#include <time.h>
+#include <string.h>
+
+ /*
+  * Utility library.
+  */
+#include <attr.h>
+#include <vstream.h>
+
+ /*
+  * External interface.
+  * 
+  * This structure contains the time stamps from various mail delivery stages,
+  * as well as the connection reuse count. The time stamps provide additional
+  * insight into the nature of performance bottle necks.
+  * 
+  * For convenience, we record absolute time stamps instead of time differences.
+  * This is because the decision of what numbers to subtract actually depends
+  * on program history. Since we prefer to compute time differences in one
+  * place, we postpone this task until the end, in log_adhoc().
+  * 
+  * A zero time stamp or reuse count means the information is not supplied.
+  * 
+  * Specifically, a zero active_arrival value means that the message did not
+  * reach the queue manager; and a zero agent_handoff time means that the
+  * queue manager did not give the message to a delivery agent.
+  * 
+  * Some network clients update the conn_setup_done value when connection setup
+  * fails or completes.
+  * 
+  * The deliver_done value is usually left at zero, which means use the wall
+  * clock time when reporting recipient status information. The exception is
+  * with delivery agents that can deliver multiple recipients in a single
+  * transaction. These agents explicitly update the deliver_done time stamp
+  * to ensure that multiple recipient records show the exact same delay
+  * values.
+  */
+typedef struct {
+    struct timeval incoming_arrival;	/* incoming queue entry */
+    struct timeval active_arrival;	/* active queue entry */
+    struct timeval agent_handoff;	/* delivery agent hand-off */
+    struct timeval conn_setup_done;	/* connection set-up done */
+    struct timeval deliver_done;	/* transmission done */
+    int     reuse_count;		/* connection reuse count */
+} MSG_STATS;
+
+#define MSG_STATS_INIT(st) \
+    ( \
+	memset((char *) (st), 0, sizeof(*(st))), \
+	(st) \
+    )
+
+#define MSG_STATS_INIT1(st, member, value) \
+    ( \
+	memset((char *) (st), 0, sizeof(*(st))), \
+	((st)->member = (value)), \
+	(st) \
+    )
+
+#define MSG_STATS_INIT2(st, m1, v1, m2, v2) \
+    ( \
+	memset((char *) (st), 0, sizeof(*(st))), \
+	((st)->m1 = (v1)), \
+	((st)->m2 = (v2)), \
+	(st) \
+    )
+
+extern int msg_stats_scan(ATTR_SCAN_MASTER_FN, VSTREAM *, int, void *);
+extern int msg_stats_print(ATTR_PRINT_MASTER_FN, VSTREAM *, int, void *);
+
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+#endif