How can i close my application by code?

On Thursday, 26 June 2014 at 09:05:23 UTC, pgtkda wrote:
> How can i close my application by code?

Do you mean exit status? Just call exit function from C library.

import std.c.stdlib;

void main()
{
    exit(0);
}

On Thursday, 26 June 2014 at 09:58:50 UTC, FreeSlave wrote:
> On Thursday, 26 June 2014 at 09:05:23 UTC, pgtkda wrote:
>> How can i close my application by code?
>
> Do you mean exit status? Just call exit function from C library.
>
> import std.c.stdlib;
>
> void main()
> {
>     exit(0);
> }

wow, thank you very much :)

On Thursday, 26 June 2014 at 09:58:50 UTC, FreeSlave wrote:
> On Thursday, 26 June 2014 at 09:05:23 UTC, pgtkda wrote:
>> How can i close my application by code?
>
> Do you mean exit status? Just call exit function from C library.
>
> import std.c.stdlib;
>
> void main()
> {
>     exit(0);
> }

Will destructors and/or scope statements be executed if you exit this way?

On Thursday, 26 June 2014 at 10:40:00 UTC, John Colvin wrote:
> On Thursday, 26 June 2014 at 09:58:50 UTC, FreeSlave wrote:
>> On Thursday, 26 June 2014 at 09:05:23 UTC, pgtkda wrote:
>>> How can i close my application by code?
>>
>> Do you mean exit status? Just call exit function from C library.
>>
>> import std.c.stdlib;
>>
>> void main()
>> {
>>    exit(0);
>> }
>
> Will destructors and/or scope statements be executed if you exit this way?

They won't. Same for module destructors.

If you need those to work, another option is to throw some custom Exception type which is only caught in main.

On Thursday, 26 June 2014 at 11:07:37 UTC, Rene Zwanenburg wrote:
>
> They won't. Same for module destructors.
>
> If you need those to work, another option is to throw some custom Exception type which is only caught in main.

I really wish this wasn't the answer, but for some programs I've had to resort to it myself.  For at least one I've defined an Exception type that carries a status code payload to be returned by main.  D needs its own exit().

There's been this request in the bugzilla since 2009:
https://issues.dlang.org/show_bug.cgi?id=3462

On Thu, Jun 26, 2014 at 01:23:17PM +0000, Chris Nicholson-Sauls via Digitalmars-d-learn wrote:
> On Thursday, 26 June 2014 at 11:07:37 UTC, Rene Zwanenburg wrote:
> >
> >They won't. Same for module destructors.
> >
> >If you need those to work, another option is to throw some custom Exception type which is only caught in main.
> 
> I really wish this wasn't the answer, but for some programs I've had to resort to it myself.  For at least one I've defined an Exception type that carries a status code payload to be returned by main.  D needs its own exit().

I've done the same for my own programs:

	class ExitException : Exception
	{
		int status;
		this(int _status, string file=__FILE__,
			size_t line=__LINE__)
		{
			super(file,line);
			status = _status;
		}
	}
	void exit(int status=0) {
		throw new ExitException(status);
	}
	int main(string[] args) {
		try {
			...
			return 0;
		} catch(ExitException e) {
			return e.status;
		} catch(Exception e) {
			... // real exception here
			return 1;
		}
	}

It works reasonably well for single-threaded program, but as the following bug states, there's no nice way to terminate a multithreaded program:


> There's been this request in the bugzilla since 2009: https://issues.dlang.org/show_bug.cgi?id=3462

If you have any good ideas, please chime in on the bug report!


T

-- 
"I'm not childish; I'm just in touch with the child within!" - RL

On Thursday, 26 June 2014 at 11:07:37 UTC, Rene Zwanenburg wrote:
> On Thursday, 26 June 2014 at 10:40:00 UTC, John Colvin wrote:
>> On Thursday, 26 June 2014 at 09:58:50 UTC, FreeSlave wrote:
>>> On Thursday, 26 June 2014 at 09:05:23 UTC, pgtkda wrote:
>>>> How can i close my application by code?
>>>
>>> Do you mean exit status? Just call exit function from C library.
>>>
>>> import std.c.stdlib;
>>>
>>> void main()
>>> {
>>>   exit(0);
>>> }
>>
>> Will destructors and/or scope statements be executed if you exit this way?
>
> They won't. Same for module destructors.

Module destructors are called. At least in DMD v2.065. I believe d runtime automatically register this with atexit function.