Charm++ parallel programming system

["Mikida, Eric P" <mikida2 AT illinois.edu>]

Hi Bob,

I’ve run into this a few times myself, and what you’ve proposed does seem 
like a reasonable solution. I’ll bring it up for discussion at our weekly 
core meeting tomorrow where we can give it a more detailed discussion, and 
assign it to someone to work on.

Thanks
Eric

> On Mar 1, 2016, at 2:06 PM, Robert Steinke 
> <rsteinke AT uwyo.edu>
>  wrote:
> 
> In the user's guide it says:
> 
> The syntax of SDAG if statements matches that of C and C++. However, if one 
> encounters a syntax error on correct-looking code in a loop or conditional 
> statement, try assigning the condition expression to a boolean variable in 
> a serial block preceding the statement and then testing that boolean's 
> value. This can be necessary because of the complexity of parsing C++ code.
> 
> So inside of my SDAG code I sometimes have to do this:
> 
> serial
> {
>  sdagCondition = (some complex boolean expression);
> }
> 
> if (sdagCondition)
> {
>  ...
> 
> 
> The boolean variable sdagCondition can't be declared as a local in the 
> serial block because it also needs to be visible inside the if. So I wind 
> up adding it to my class as a member variable.  Could you automatically add 
> a member variable for this purpose as part of the SDAG_CODE macro so that 
> it doesn't clutter up my class definition? Maybe you could add the member 
> variable and when parsing the .ci file always treat "if(X)" as if it were 
> written:
> 
> serial
> {
>  sdagCondition = X;
> }
> 
> if (sdagCondition)
> 
> Maybe that would allow it to correctly parse the C++ in more cases.
> 
> Bob Steinke
>