I'm kind of dumbfounded.  I can't find any kind of D-compatible exit() function in phobos.  Using std.c.stdlib.exit will simply end the program, and module dtors/gc_term won't be called.  There's nothing in std.thread either.

Am I missing something?  Or is this something that should probably be added to phobos?

Jarrett Billingsley wrote:
> I'm kind of dumbfounded.  I can't find any kind of D-compatible exit() function in phobos.  Using std.c.stdlib.exit will simply end the program, and module dtors/gc_term won't be called.  There's nothing in std.thread either.
> 
> Am I missing something?  Or is this something that should probably be added to phobos? 

It doesn't currently exist.  However, "throw new Object" would accomplish much the same thing.


Sean

"Sean Kelly" <sean@f4.ca> wrote in message news:eu6fvd$f5r$2@digitalmars.com...

> It doesn't currently exist.  However, "throw new Object" would accomplish much the same thing.
>
>
> Sean

Except that it would print an error message, and exiting without an error is certainly a possible scenario.

>
>> It doesn't currently exist.  However, "throw new Object" would accomplish much the same thing.
>>
>>
>> Sean
>
> Except that it would print an error message, and exiting without an error is certainly a possible scenario.

Haha, so I wasn't just too dumb to find it :)

Jarrett Billingsley wrote:

> I'm kind of dumbfounded.  I can't find any kind of D-compatible exit() function in phobos.  Using std.c.stdlib.exit will simply end the program, and module dtors/gc_term won't be called.  There's nothing in std.thread either.
> 
> Am I missing something?  Or is this something that should probably be added to phobos?

I think simple scope(exit) should do the trick.

void exitFun(){
 ...
}

void main(){
   scope(exit) exitFun();
   ...
}

"Krzysztof Szukielojc" <krzysztof.szukielojc@gmail.com> wrote in message news:eu6m78$m1r$1@digitalmars.com...

>
> I think simple scope(exit) should do the trick.
>
> void exitFun(){
> ...
> }
>
> void main(){
>   scope(exit) exitFun();
>   ...
> }
>

No, I'm not looking for an atexit() replacement, sorry.  I'm looking for a way to end my D program at an arbitrarily deep call depth and still have it call the RTL cleanup functions.

I suppose it would be possible to do something like:

extern(C) void _cleanupD()
{
    _moduleDtor();
    gc_term();
}

..

void main()
{
    atexit(&_cleanupD);

    // program
}

But that's horribly non-portable.

Something like this should be in Phobos.

Jarrett Billingsley wrote:
> "Krzysztof Szukielojc" <krzysztof.szukielojc@gmail.com> wrote in message news:eu6m78$m1r$1@digitalmars.com...
> 
>> I think simple scope(exit) should do the trick.
>>
>> void exitFun(){
>> ...
>> }
>>
>> void main(){
>>   scope(exit) exitFun();
>>   ...
>> }
>>
> 
> No, I'm not looking for an atexit() replacement, sorry.  I'm looking for a way to end my D program at an arbitrarily deep call depth and still have it call the RTL cleanup functions.
> 
> I suppose it would be possible to do something like:
> 
> extern(C) void _cleanupD()
> {
>     _moduleDtor();
>     gc_term();
> }
> 
> ...
> 
> void main()
> {
>     atexit(&_cleanupD);
> 
>     // program
> }
> 
> But that's horribly non-portable.
> 
> Something like this should be in Phobos.

Another way of doing it, stolen from Python :P

> class SystemExit : Object {}
>
> int main(char[][] args)
> {
>     int result = 0;
>     try
>     {
>         result = appmain(args);
>     }
>     catch( SystemExit e )
>     {
>         // Meh.
>     }
>     return result;
> }
>
> int appmain(char[][] args)
> {
>     // Your code here!
> }
>
> // ...
>
> void really_deep_function()
> {
>     throw new SystemExit;
> }

This should be portable, and ensures that all dtors (class and module)
and scope(exit)/scope(failure) get executed.  It might take a little
longer to get back up to main, but at least it should be safe :)

	-- Daniel

-- 
int getRandomNumber()
{
    return 4; // chosen by fair dice roll.
              // guaranteed to be random.
}

http://xkcd.com/

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