73 lines
1.9 KiB
Rust
73 lines
1.9 KiB
Rust
#![allow(non_upper_case_globals)]
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#![allow(non_camel_case_types)]
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#![allow(non_snake_case)]
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use crate::PlatformDispatcher;
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use async_task::Runnable;
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use objc::{
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class, msg_send,
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runtime::{BOOL, YES},
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sel, sel_impl,
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};
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use std::ffi::c_void;
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include!(concat!(env!("OUT_DIR"), "/dispatch_sys.rs"));
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pub fn dispatch_get_main_queue() -> dispatch_queue_t {
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unsafe { &_dispatch_main_q as *const _ as dispatch_queue_t }
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}
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pub struct MacDispatcher;
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impl PlatformDispatcher for MacDispatcher {
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fn is_main_thread(&self) -> bool {
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let is_main_thread: BOOL = unsafe { msg_send![class!(NSThread), isMainThread] };
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is_main_thread == YES
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}
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fn dispatch(&self, runnable: Runnable) {
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unsafe {
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dispatch_async_f(
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dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT.try_into().unwrap(), 0),
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runnable.into_raw() as *mut c_void,
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Some(trampoline),
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);
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}
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}
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fn dispatch_on_main_thread(&self, runnable: Runnable) {
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unsafe {
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dispatch_async_f(
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dispatch_get_main_queue(),
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runnable.into_raw() as *mut c_void,
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Some(trampoline),
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);
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}
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}
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}
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extern "C" fn trampoline(runnable: *mut c_void) {
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let task = unsafe { Runnable::from_raw(runnable as *mut ()) };
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task.run();
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}
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// #include <dispatch/dispatch.h>
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// int main(void) {
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// dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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// // Do some lengthy background work here...
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// printf("Background Work\n");
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// dispatch_async(dispatch_get_main_queue(), ^{
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// // Once done, update your UI on the main queue here.
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// printf("UI Updated\n");
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// });
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// });
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// sleep(3); // prevent the program from terminating immediately
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// return 0;
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// }
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// ```
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