From a9fd14e2b5daad846f720389453dffc56c3becce Mon Sep 17 00:00:00 2001
From: in2 <in2@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Mon, 10 Feb 2003 17:41:45 +0000
Subject: lazy sort utmp

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk@653 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 pttbbs/include/pttstruct.h |  6 ++++--
 pttbbs/mbbsd/Makefile      |  4 ++--
 pttbbs/mbbsd/cache.c       |  3 ++-
 pttbbs/mbbsd/mbbsd.c       |  3 ++-
 pttbbs/util/shmctl.c       | 15 +++++++++++++--
 5 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/pttbbs/include/pttstruct.h b/pttbbs/include/pttstruct.h
index 12054171..898d4447 100644
--- a/pttbbs/include/pttstruct.h
+++ b/pttbbs/include/pttstruct.h
@@ -1,4 +1,4 @@
-/* $Id: pttstruct.h,v 1.28 2003/01/24 14:41:19 in2 Exp $ */
+/* $Id: pttstruct.h,v 1.29 2003/02/10 17:41:45 in2 Exp $ */
 #ifndef INCLUDE_STRUCT_H
 #define INCLUDE_STRUCT_H
 
@@ -313,7 +313,9 @@ typedef struct {
     int     currsorted;
     time_t  UTMPuptime;
     int     UTMPnumber;
-    int     UTMPbusystate;
+    char    UTMPneedsort;
+    char    UTMPbusystate;
+    char    pad[2];
 
     char    gap[1024]; /* avoid some memory error / buffer overflow */
     /* brdshm */
diff --git a/pttbbs/mbbsd/Makefile b/pttbbs/mbbsd/Makefile
index 85e695f0..9204ead9 100644
--- a/pttbbs/mbbsd/Makefile
+++ b/pttbbs/mbbsd/Makefile
@@ -1,11 +1,11 @@
-# $Id: Makefile,v 1.17 2003/01/19 16:02:25 kcwu Exp $
+# $Id: Makefile,v 1.18 2003/02/10 17:41:45 in2 Exp $
 
 # ­q¸q°ò¥»ªì­È
 BBSHOME?=	$(HOME)
 BBSHOME?=	/home/bbs
 OSTYPE?=	FreeBSD
 CC?=		gcc
-CFLAGS+=	-Wall -W -pipe -DBBSHOME='"$(BBSHOME)"' -I../include
+CFLAGS+=	-Wall -pipe -DBBSHOME='"$(BBSHOME)"' -I../include
 LDFLAGS+=	-pipe -Wall
 LIBS+=		-lcrypt
 
diff --git a/pttbbs/mbbsd/cache.c b/pttbbs/mbbsd/cache.c
index ae5caad3..023ac8a7 100644
--- a/pttbbs/mbbsd/cache.c
+++ b/pttbbs/mbbsd/cache.c
@@ -1,4 +1,4 @@
-/* $Id: cache.c,v 1.57 2003/01/24 19:48:14 in2 Exp $ */
+/* $Id: cache.c,v 1.58 2003/02/10 17:41:45 in2 Exp $ */
 #include "bbs.h"
 
 #ifndef __FreeBSD__
@@ -476,6 +476,7 @@ purge_utmp(userinfo_t * uentp)
 {
     logout_friend_online(uentp);
     memset(uentp, 0, sizeof(userinfo_t));
+    SHM->UTMPneedsort = 1;
 }
 
 #endif
diff --git a/pttbbs/mbbsd/mbbsd.c b/pttbbs/mbbsd/mbbsd.c
index 2ef59687..3a5828b0 100644
--- a/pttbbs/mbbsd/mbbsd.c
+++ b/pttbbs/mbbsd/mbbsd.c
@@ -1,4 +1,4 @@
-/* $Id: mbbsd.c,v 1.65 2003/01/24 19:48:14 in2 Exp $ */
+/* $Id: mbbsd.c,v 1.66 2003/02/10 17:41:45 in2 Exp $ */
 #include "bbs.h"
 
 #define SOCKET_QLEN 4
@@ -743,6 +743,7 @@ setup_utmp(int mode)
     if (enter_uflag & CLOAK_FLAG)
 	uinfo.invisible = YEA;
     getnewutmpent(&uinfo);
+    SHM->UTMPneedsort = 1;
 #ifndef _BBS_UTIL_C_
     friend_load();
     nice(3);
diff --git a/pttbbs/util/shmctl.c b/pttbbs/util/shmctl.c
index 1eea2825..f1b7765c 100644
--- a/pttbbs/util/shmctl.c
+++ b/pttbbs/util/shmctl.c
@@ -1,4 +1,4 @@
-/* $Id: shmctl.c,v 1.31 2003/01/24 19:48:29 in2 Exp $ */
+/* $Id: shmctl.c,v 1.32 2003/02/10 17:41:45 in2 Exp $ */
 #include "bbs.h"
 #include <sys/wait.h>
 
@@ -59,6 +59,7 @@ int utmpfix(int argc, char **argv)
     time_t  now, timeout = -1;
     char    *clean, buf[1024], ch;
     IDLE_t  idle[USHM_SIZE];
+    char    changeflag = 0;
 
     while( (ch = getopt(argc, argv, "nt:l:")) != -1 )
 	switch( ch ){
@@ -131,9 +132,12 @@ int utmpfix(int argc, char **argv)
 		   i, clean, SHM->uinfo[which].userid);
 	    memset(&SHM->uinfo[which], 0, sizeof(userinfo_t));
 	    --nownum;
+	    changeflag = 1;
 	}
     }
     SHM->UTMPbusystate = 0;
+    if( changeflag )
+	SHM->UTMPneedsort = 1;
     return 0;
 }
 /* end of utmpfix ---------------------------------------------------------- */
@@ -202,6 +206,7 @@ inline void utmpsort(void)
     userinfo_t     *uentp;
     int             count, i, ns;
     short           nusers[MAX_BOARD];
+
     SHM->UTMPbusystate = 1;
     SHM->UTMPuptime = time(NULL);
     ns = (SHM->currsorted ? 0 : 1);
@@ -264,7 +269,13 @@ int utmpsortd(int argc, char **argv)
 	}
 	else{
 	    while( 1 ){
-		utmpsort();
+		int     i;
+		for( i = 0 ; SHM->UTMPbusystate && i < 5 ; ++i )
+		    usleep(300000);
+
+		if( SHM->UTMPneedsort )
+		    utmpsort();
+
 		sleep(1);
 	    }
 	}
-- 
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