Re: question about CL-HTTP

>>>>> On Tue, 27 Jan 2004 11:48:59 +0100, =?iso-8859-1?B?Q3Jpc3RpbmEgR2VtYSBNdfFveiBNYXlh?= <[email protected]> said:

  Cristina> Hello!!

  Cristina>         I'm doing an application (Criminal law Course) in CL-HTTP under 
  Cristina> LispWork of Harlequin, but i've a problem. I'm going to show you part of the 
  Cristina> code. I 've a html page, siidepe.html
  Cristina> ...........
  Cristina> <FORM ACTION="curso.html" METHOD="POST">
  Cristina> user<INPUT TYPE="text" NAME="NOMBRE" SIZE="10" VALUE="">
  Cristina> password<INPUT TYPE="passwd" NAME="NOMBRE" SIZE="10" VALUE="">
  Cristina> ......


  Cristina>          And when i submitted this form, the response function read from a 
  Cristina> file which contain information of the user that do the course (the last page 
  Cristina> visited, what they know about each topic,the pages that are known for them), 
  Cristina> and this information is saved in global variables 
  Cristina> (usuario,clave,pagnum,pagin,tema1,..).And i think this don't work when there 
  Cristina> are 2 o more users using the course. So, can you advice me how can i do what 
  Cristina> i want?.

  Cristina> Note: I 've to use the file, to save the information of the users.

CL-HTTP is multithreaded, so different threads might update the file
simultaneously.  Perhaps you need to use a lock to control access to the file?
See the macros MP:WITH-LOCK or CLIM-SYS:WITH-LOCK-HELD.

__Martin