Symbols with pid_t missing from header-translator generated files

[skirsdeda]

For example NSRunningApplication::processIdentifier in AppKit. I guess this has smth to do with the fact that pid_t is typedef'ed.
Any way to fix this or should it be patched on case-by-case basis in icrate crates?

[skirsdeda]

Just add "pid_t" => Self::I32, here?: https://github.com/madsmtm/objc2/blob/master/crates/header-translator/src/rust_type.rs#L645

[madsmtm]

The reason these are currently missing is that I'd rather use libc::pid_t - and that in turn has to be hidden behind a feature flag.

I am working on resolving this though.

[skirsdeda]

Makes sense, thanks.

[ehuff700]

@madsmtm are you still tracking this? this is blocking one of my projects. (Thanks for this crate btw, absolutely phenomenal work here).

[madsmtm]

Not working on it right now, no, but I still intend to get it working at some point, probably as part of / after #345.

In the meantime you can do the following workaround yourself:

use icrate::AppKit::NSRunningApplication;
use objc2::msg_send;
use libc::pid_t;

fn application_process_identifier(app: &NSRunningApplication) -> pid_t {
    unsafe { msg_send![app, processIdentifier] }
}

[blu3gui7ar]

Not working on it right now, no, but I still intend to get it working at some point, probably as part of / after #345.

In the meantime you can do the following workaround yourself:

use icrate::AppKit::NSRunningApplication;
use objc2::msg_send;
use libc::pid_t;

fn application_process_identifier(app: &NSRunningApplication) -> pid_t {
    unsafe { msg_send![app, processIdentifier] }
}

I am trying exact the same code, but got error about NSRunningApplication.
Anything I am doing wrong?

the trait bound `&NSRunningApplication: objc2::Message` is not satisfied
the following other types implement trait `objc2::Message`:
  objc2::exception::Exception
  objc2::rc::__RcTestObject
  objc2::runtime::AnyObject
  objc2::runtime::NSObject
  objc2::runtime::ProtocolObject<P>
  objc2::runtime::__NSProxy
required for `&&NSRunningApplication` to implement `objc2::runtime::MessageReceiver`
required for `&&NSRunningApplication` to implement `MsgSend`rustc[Click for full compiler diagnostic]

[madsmtm]

Hmm, are you sure it's the same code? The error seems to indicate that you may have written msg_send![&app, processIdentifier] instead (notice the extra &).

[blu3gui7ar]

Hmm, are you sure it's the same code? The error seems to indicate that you may have written msg_send![&app, processIdentifier] instead (notice the extra &).

Errr, sorry for the confusion. Actually I tried both with no luck.

[skirsdeda]

Definitely works for me, but then I'm using a bit outdated versions:

objc2 = "=0.3.0-beta.4"
icrate = { version = "0.0.1", features = ["AppKit", "Foundation"] }

[blu3gui7ar]

Definitely works for me, but then I'm using a bit outdated versions:

objc2 = "=0.3.0-beta.4"
icrate = { version = "0.0.1", features = ["AppKit", "Foundation"] }

I found the problem. I used objc2 0.5.0. When I use reexport from icrate instead, which seems to be 0.4.1, it works.

use icrate::objc2::msg_send;

[madsmtm]

Ah yeah, I haven't released a new version of icrate that matches the new objc2 version yet, see #537.