Re: Global Buffer and another problem

From: George Greer (
Date: 09/14/99

On Tue, 14 Sep 1999, Chuck Carson wrote:

>Are these allocated for each socket connected to the mud server?

Nope.  They're all shared.

>I notice that these buf's get set to NULL in a lot of functions as well
>as overwritten with strcpy and sprintf.

Set to NUL, not NULL.  One is a character, the other is a pointer value.

>Is it possible for two players to trigger two functions in such a manner
>that one function destroys what the other function has done with the

Unless you've written a multi-threaded MUD, no.  It is possible to trash
the buffers with one player by having the callee of a function smash the
buffer the caller was just using.  You have to be careful in that regard.

The GNU Pth library looks nice because, in theory, you could have a MUD
multi-threaded in design but not in running so the old global buffers would
still work (with obvious caveats).

George Greer            | Stock CircleMUD Bug Reporting or Help   |

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