OpenEuphoria

2. Re: Logging tools

• Posted by fizzpopsoft May 17, 2015
• 1713 views

@Developers,
Is there some way to bring some Euphoria internal parser / trace variables in as readable by the user Euphoria code?
For example, the name of the current procedure/function we are in, maybe a sequence containing the call stack, and the source line number. Note, I am asking about READ only please, I do not want to open the can of worms by asking for:
a) The line number to be the target of a goto
b) The line number to be updateable by the user, thereby potentially enabling a variable goto
c) Ditto no proc/func calls allowed to whatever is in the call stack
This would simplify this somewhat ugly and repetitive code I am doing at the moment:

------------------------------------------------------------------- 
function shared_vm_usage(sequence servername) -- v530  
sequence s1, s2 
integer i1, i2 
s1 = {} 
s1 = append(s1,"shared_vm_usage") 
s1 = append(s1,debug_level) 
s1 = append(s1,03751) 
s2 = {} 
s2 = append(s2,servername) 
s1 = append(s1,s2) 
program_debug(s1)  
i2 = 0 
s1 = get_hardware_serial(servername)  
i1 = find_from(s1,vm_server_serials,1)  
if i1 > 0 then  
	i2 = vm_server_inuse[i1] 
end if	   
return i2 
end function 
--------------------------------------------------------------------- 
----------------------------------------------------------------------------------------------------- 
-- standard debug procedure 
procedure program_debug(sequence passed_sequence) 
   sequence caller_name, caller_vars, s1, s2, s3, s4  
   integer caller_debug_level, caller_line_nr, i1, i2, i3, i4 
   object o1 
   i1 = 0 
   i2 = 0 
   caller_name = passed_sequence[1] 
   caller_debug_level = passed_sequence[2] 
   caller_line_nr = passed_sequence[3]  
   caller_vars = passed_sequence[4] 
   -- store the call counts per routine if debug > 2 
   if caller_debug_level > 2 then -- only if debug is not 0 
     i1 = find_from(caller_name,procmap,1) 
     if i1 = 0 then 
       procmap = append(procmap,caller_name) 
       procmap_line = append(procmap_line,caller_line_nr) 
       procmap_count = append(procmap_count,1) 
       i1 = i1 + 1 
      else 
       procmap_count[i1] = procmap_count[i1] + 1 
     end if 
    -- show the calling results of named procs 
     if find_from(caller_name,dump_proccount,1) !=0 then  
  	   i2 = 0 
  	   while i2 < length(procmap) do  
  		    i2 = i2 + 1 
  		    s1 = procmap[i2] 
  		    if compare(caller_name,s1) = 0 then 
  		       s2 = sprintf("%g",{procmap_count[i2]})  
  		       s4 = sprintf("%g",{procmap_line[i2]}) 
  		       writelog("Debug 3 Routine " & s1 & " at line " & s4 & " has count "& s2) 
  		    end if    
  	   end while 
     end if		 
   end if  
   -- turn on trace for specified procedure/function in config 
   if caller_debug_level > 3 then  
     if find_from(caller_name,trace_names,1) != 0 then 
       trace(1) 
      else  
   	   trace(0)  
     end if 
   end if 
   -- 
   if i2 > 0 then  
     s4 = sprintf("%g",{procmap_line[i2]})  
   end if 
   if i1 > 0 then  
     s4 = sprintf("%g",{procmap_line[i1]})  
   end if      
   if caller_debug_level = 3 then   -- don't do this for level 4 as well 
    	if find_from(caller_name,hidetrace,1) = 0 then -- v512 supress certain known calls 
        writelog("Debug 3 Routine '" & caller_name & "' called at line " & s4) 
    else  
        if procmap_count[i1] = 1 then -- always show the first time its called 
    	     writelog("Debug 3 Routine '" & caller_name & "' called at line " & s4) 
        end if	  	  
      end if    
   end if 
   if caller_debug_level > 3 then 
	   i4 = 0 
	   i3 = 0 
	   s1 = {} 
	   while i4 < length(caller_vars) do 
	     i4 = i4 + 1 
	     o1 = caller_vars[i4] 
	     if sequence(o1) then  
	  	   s2 = o1 
	  	   s1 = s1 & s2 & " " 
	  	   i3 = 1 
	     end if 
	     if integer(o1) then  
	  	   i2 = o1 
	  	   s3 = sprintf("%g",{i2})  
	  	   s1 = s1 & s3 & " " 
	  	   i3 = 1 
	     end if 
	     if atom(o1) then 	 
	       i2 = o1 
	  	   s3 = sprintf("%g",{i2}) 
	  	   s1 = s1 & s3 & " " 
	  	   i3 = 1 
	     end if 
	     if i3 = 0 then -- assume object if not atom/int/seq 
	  	   s2 = o1 
	  	   s1 = s1 & s2 & " " 
	  	   i3 = 1 
	     end if 
	   end while 
	   if find_from(caller_name,hidetrace,1) = 0 then -- v512 supress certain known calls 
	      writelog("Debug 4 Routine '" & caller_name & "' called at line " & s4 & ", passing vars " & s1) 
	    else  
        if procmap_count[i1] = 1 then -- always show the first time its called 
    	     writelog("Debug 4 Routine '" & caller_name & "' called at line " & s4 & ", passing vars " & s1) 
        end if	 
	   end if   
   end if 
end procedure          
------------------------------------------------------------------- 

Where program_debug is being passed the name, line number, variables etc

4. Re: Logging tools

• Posted by fizzpopsoft May 17, 2015
• 1657 views
• Last edited May 18, 2015

OK thanks Greg Jim,
The online manual has no hits for call_stack() so I will search the forum. I honestly didn't see the single line where the magic call_stack was called earlier, my bad.
A gotcha for me is I am using Eu v4.05 due to translator issues with both GCC and Watcom, and call_stack() is Euphoria v4.1 only according to the ifdef's . Ah well, suppose I had better give v4.1 another go... but will have to go back again if the translator does not work.
I'll do a backup, reboot, clean install v4.1, reboot and see.
Regards,
Alan