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C++ Api to run a functor from a thread

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This commit is contained in:
Olivier Goffart 2021-05-11 16:41:59 +02:00
parent 7293129fe1
commit aabd320e83
5 changed files with 111 additions and 14 deletions
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37
api/sixtyfps-cpp/lib.rs
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@ -9,6 +9,11 @@
LICENSE END */
/*! This scrates just expose the function used by the C++ integration */
use core::ffi::c_void;
use sixtyfps_corelib::window::ffi::ComponentWindowOpaque;
use sixtyfps_corelib::window::ComponentWindow;
use sixtyfps_rendering_backend_default::backend;
#[doc(hidden)]
#[cold]
pub fn use_modules() -> usize {
@ -18,11 +23,6 @@ pub fn use_modules() -> usize {
sixtyfps_corelib::use_modules()
}
use sixtyfps_rendering_backend_default::backend;
use sixtyfps_corelib::window::ffi::ComponentWindowOpaque;
use sixtyfps_corelib::window::ComponentWindow;
#[no_mangle]
pub unsafe extern "C" fn sixtyfps_component_window_init(out: *mut ComponentWindowOpaque) {
assert_eq!(
@ -38,6 +38,33 @@ pub unsafe extern "C" fn sixtyfps_run_event_loop() {
.run_event_loop(sixtyfps_corelib::backend::EventLoopQuitBehavior::QuitOnLastWindowClosed);
}
/// Will execute the fiven functor in the main thread
#[no_mangle]
pub unsafe extern "C" fn sixtyfps_post_event(
event: extern "C" fn(user_data: *mut c_void),
user_data: *mut c_void,
drop_user_data: Option<extern "C" fn(*mut c_void)>,
) {
struct UserData {
user_data: *mut c_void,
drop_user_data: Option<extern "C" fn(*mut c_void)>,
}
impl Drop for UserData {
fn drop(&mut self) {
if let Some(x) = self.drop_user_data {
x(self.user_data)
}
}
}
unsafe impl Send for UserData {}
let ud = UserData { user_data, drop_user_data };
crate::backend().post_event(Box::new(move || {
let ud = &ud;
event(ud.user_data);
}));
}
#[no_mangle]
pub unsafe extern "C" fn sixtyfps_quit_event_loop() {
crate::backend().quit_event_loop();