(Message circle:90)
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Date: Fri, 23 Aug 1996 21:02:54 -0400 (EDT)
From: Sammy <samedi@clark.net>
To: circle@cspo.queensu.ca
Subject: [Circle] [CODE] Search buffering
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In case anybody else out there is stuck on a terribly slow server and
have noticed zone reset lag (I've seen a certain zone take 2-3 minutes to
reset during busy hours), here's a simple fix to speed things up a little.
All it does is buffer the last mob, object, and room so if you load the
same mob twice it doesn't search the whole index again.
Add these three variables to db.c somewhere around the top:
/* search buffereing */
sh_int mob_sbuf = NOBODY;
sh_int obj_sbuf = NOTHING;
sh_int room_sbuf = NOWHERE;
And replace real_room, real_object, and real_mobile with these (if anyone
out there is still using obuild just change the xxx_sbuf parts). PLease
excuse any typos. If there's trouble just copy the buffering lines.
Sam
int real_room(int virtual)
{
int bot, top, mid;
bot = 0;
top = top_of_world;
if((world + room_sbuf)->number == virtual)
return room_sbuf;
for (;;) {
mid = (bot + top) >> 1;
if ((world + mid)->number == virtual) {
room_sbuf = mid;
return mid;
}
if (bot >= top)
break;
if ((world + mid)->number > virtual)
top = mid - 1;
else
bot = mid + 1;
}
return(NOWHERE);
}
int real_mobile(int virtual)
{
int bot, top, mid;
bot = 0;
top = top_of_mobt;
if((mob_index + mob_sbuf)->virtual == virtual)
return mob_sbuf;
for (;;) {
mid = (bot + top) >> 1;
if ((mob_index + mid)->virtual == virtual) {
mob_sbuf = mid;
return mid;
}
if (bot >= top)
break;
if ((mob_index + mid)->virtual > virtual)
top = mid - 1;
else
bot = mid + 1;
}
return(NOBODY);
}
int real_object(int virtual)
{
int bot, top, mid;
bot = 0;
top = top_of_objt;
if((obj_index + obj_sbuf)->virtual == virtual)
return obj_sbuf;
for (;;) {
mid = (bot + top) >> 1;
if ((obj_index + mid)->virtual == virtual) {
obj_sbuf = mid;
return mid;
}
if (bot >= top)
break;
if ((obj_index + mid)->virtual > virtual)
top = mid - 1;
else
bot = mid + 1;
}
return(NOTHING);
}
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