cleanup log_disconnections()

Trivial patch to cleanup log_disconnections() function.

Regards,
Qingqing

---

Index: postgres.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/tcop/postgres.c,v
retrieving revision 1.463
diff -u -r1.463 postgres.c
--- postgres.c 26 Sep 2005 15:51:12 -0000 1.463
+++ postgres.c 3 Oct 2005 04:34:17 -0000
@@ -3526,29 +3526,13 @@
static void
log_disconnections(int code, Datum arg)
{
- Port *port = MyProcPort;
- struct timeval end;
- int hours,
- minutes,
- seconds;
+ Port *port = MyProcPort;
+ struct timeval end;
+ int hours,
+ minutes,
+ seconds;

- char session_time[20];
- char uname[6 + NAMEDATALEN];
- char dbname[10 + NAMEDATALEN];
- char remote_host[7 + NI_MAXHOST];
- char remote_port[7 + NI_MAXSERV];
-
- snprintf(uname, sizeof(uname), " user=%s", port->user_name);
- snprintf(dbname, sizeof(dbname), " database=%s", port->database_name);
- snprintf(remote_host, sizeof(remote_host), " host=%s",
- port->remote_host);
- if (port->remote_port[0])
- snprintf(remote_port, sizeof(remote_port), " port=%s", port->remote_port);
- else
- remote_port[0] = '\0';
-
gettimeofday(&end, NULL);
-
if (end.tv_usec < port->session_start.tv_usec)
{
end.tv_sec--;
@@ -3557,28 +3541,16 @@
end.tv_sec -= port->session_start.tv_sec;
end.tv_usec -= port->session_start.tv_usec;

+ /* for stricter accuracy here we could round - this is close enough */
hours = end.tv_sec / SECS_PER_HOUR;
end.tv_sec %= SECS_PER_HOUR;
minutes = end.tv_sec / SECS_PER_MINUTE;
seconds = end.tv_sec % SECS_PER_MINUTE;

- /* if time has gone backwards for some reason say so, or print time */
-
- if (end.tv_sec < 0)
- snprintf(session_time, sizeof(session_time), "negative!");
- else
-
- /*
- * for stricter accuracy here we could round - this is close
- * enough
- */
- snprintf(session_time, sizeof(session_time),
- "%d:%02d:%02d.%02d",
- hours, minutes, seconds, (int) (end.tv_usec / 10000));
-
- ereport(
- LOG,
- (errmsg("disconnection: session time: %s%s%s%s%s",
- session_time, uname, dbname, remote_host, remote_port)));
-
+ ereport(LOG,
+ (errmsg("disconnection: session time=%d:%02d:%02d.%02d,"
+ " user=%s, database=%s, host=%s, port=%s",
+ hours, minutes, seconds, (int) (end.tv_usec / 10000),
+ port->user_name, port->database_name, port->remote_host,
+ port->remote_port[0]?port->remote_port : "<unknown>")));
}