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max 2023-01-02 19:29:13 +02:00
parent 6024a85663
commit edca84a42c
1 changed files with 10 additions and 10 deletions
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20
src/event_loop/macos.rs
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@ -11,7 +11,7 @@ use objc::{class, msg_send, sel, sel_impl};
use std::os::raw::c_void;
use std::sync::Arc;
use super::{BackgroundThread, EventLoop, MainThreadExecutor};
use super::{BackgroundThread, EventLoop, MainThreadExecutor, TASK_QUEUE_CAPACITY};
/// Wrapping the `CFRunLoopSourceRef` type is required to be able to annotate it as thread-safe.
struct LoopSourceWrapper(CFRunLoopSourceRef);
@ -36,8 +36,9 @@ pub(crate) struct MacOSEventLoop<T, E> {
/// The sender for passing messages to the main thread.
main_thread_sender: Sender<T>,
/// Is it necessary to store the information that is sent to the callback function here?
_info: Arc<(Arc<E>, Receiver<T>)>,
/// The data that is passed to the external run loop source callback function via a raw pointer.
/// The data is not accessed from the Rust side after creating it but it's kept here so as not to get dropped.
_thread_data: Box<(Arc<E>, Receiver<T>)>,
}
impl<T, E> EventLoop<T, E> for MacOSEventLoop<T, E>
@ -46,15 +47,14 @@ where
E: MainThreadExecutor<T> + 'static,
{
fn new_and_spawn(executor: Arc<E>) -> Self {
// What's a good size for the queue?
let (main_thread_sender, main_thread_receiver) = channel::bounded::<T>(32);
let (main_thread_sender, main_thread_receiver) = channel::bounded::<T>(TASK_QUEUE_CAPACITY);
let info = Arc::new((executor.clone(), main_thread_receiver));
let thread_data = Box::new((executor.clone(), main_thread_receiver));
let loop_source;
unsafe {
let mut source_context = CFRunLoopSourceContext {
info: Arc::as_ptr(&info) as *mut c_void,
let source_context = CFRunLoopSourceContext {
info: &*thread_data as *const _ as *mut c_void,
cancel: None,
copyDescription: None,
equal: None,
@ -69,7 +69,7 @@ where
loop_source = CFRunLoopSourceCreate(
kCFAllocatorDefault,
1,
&mut source_context as *mut _ as *mut CFRunLoopSourceContext,
&source_context as *const _ as *mut CFRunLoopSourceContext,
);
CFRunLoopAddSource(CFRunLoopGetMain(), loop_source, kCFRunLoopCommonModes);
}
@ -79,7 +79,7 @@ where
background_thread: BackgroundThread::new_and_spawn(executor),
loop_source: LoopSourceWrapper(loop_source),
main_thread_sender,
_info: info,
_thread_data: thread_data,
}
}