On Wednesday, 26 December 2018 at 03:19:45 UTC, Norbert Preining
wrote:
Hello everyone,
we are writing a program that synchronizes the OneDrive cloud
service with the local computer, and run it as daemon in the
background. To ensure proper database shutdown on exit, we need
to install signal handlers that react to SIGINT etc.
[...]
Now, unfortunately the call to the shutdown procedure is not
possible in `@nogc`, so I am a bit at loss how to deal with all
this.
The code I am using is:
```
extern(C) @nogc @system void exitHandler(int value) {
printf("Ooohhhh got %d\n", value);
// workaround for segfault in
std.net.curl.Curl.shutdown() on exit
oneDrive.http.shutdown();
exit(0);
}
```
and in `main` before entering the loop:
```
signal(SIGINT, &exitHandler);
```
Any suggestion would be very much appreciated.
Norbert
The technique to use here is to wrap the non-gc code in a
delegate, cast it as a @nogc delegate and call it, see [1] for
more details.
[1] https://p0nce.github.io/d-idioms/#Bypassing-@nogc
