Proper way to exit with specific exit code?

[Ruby The Roobster]

On Sunday, 13 November 2022 at 21:16:32 UTC, mw wrote:
> On Saturday, 19 September 2020 at 06:11:15 UTC, Jacob Carlborg 
> wrote:
>> On 2020-09-17 16:58, drathier wrote:
>>> What's the proper way to exit with a specific exit code?
>>> 
>>> I found a bunch of old threads discussing this, making sure 
>>> destructors run and the runtime terminates properly, all of 
>>> which seemingly concluding that it's sad that there isn't a 
>>> way to do this easily, but hopefully things have changed in 
>>> the last 5-10 years and I'm just missing the obvious solution.
>>
>> The proper way is:
>>
>> int main()
>> {
>>     return 42;
>> }
>>
>> I highly recommend against trying to terminate the application 
>> using `exit` or any other way. Just let the control flow 
>> return back to the `main` function.
>
> I'm facing this problem to exit early from a multi threaded 
> program for mem profiling purpose:
>
> https://forum.dlang.org/thread/zbdevevgghtdgfryuymh@forum.dlang.org
>
>
> So what the simplest and reliable way to terminate all threads 
> and exit to os?
>
> I even tried core.stdc.stdlib.exit(-1), it does not work.

Just give the threads a killswitch, pass the killswitch method to 
all of the threads, wait for all the threads to exit, and then 
return.  If this doesn't work, than I don't know what will.