/* ---------------------  rexx procedure  ---------------------- *      
 * Name:      Timer                                              *      
 *                                                               *      
 * Function:  Time the repetitive execution of a REXX exec       *     
 *                                                               *      
 * Invoke                                                        *      
 * Syntax:    %TIMER exec / count                                *      
 *                                                               *     
 * Author:    Lionel B. Dyck                                     *     
 *            Kaiser Permanente IT                               *     
 *            25 N. Via Monte Ave                                *      
 *            Walnut Creek, California 94598                     *      
 *                                                               *      
 * History:                                                      *      
 *            01/06/94 - add syscpu as well                      *      
 *                       and offset count by /                   *      
 *            09/11/91 - changed to use sysvar(syssrv)           *      
 *            08/09/91 - modified to report average time         *      
 *                     - change to use tso time for service      *      
 *            01/23/91 - Creation of this exec                   *      
 * ------------------------------------------------------------- */     
                                                                        
arg input                                                              
                                                                        
if length(input) = 0 then exit 8                                        
                                                                        
if pos("/",input) > 0 then                                              
   parse value input with exec "/" count                                
   else do                                                              
        exec = input                                                    
        count = 1                                                       
        end                                                             
                                                                        
say "Starting the time test of" exec "for" count "times"                
                                                                        
s_service = sysvar('SYSSRV')                                            
s_time    = sysvar('SYSCPU')                                           
                                                                       
do count                                                                
   exec                                                                 
   end                                                                 
                                                                       
e_service = sysvar('SYSSRV')                                            
e_time    = sysvar('SYSCPU')                                            
                                                                       
total_service = e_service - s_service                                   
total_time    = e_time    - s_time                                      
                                                                        
say "REXX Procedure" exec "executed" count,                            
     "times with average service units of" total_service/count         
say "and a total cpu time of:" total_time/count