A pull based event channel, with events stored in a ring buffer,
meant to be used as a resource in specs
.
Example
extern crate shrev;
use ;
A pull based event channel, with events stored in a ring buffer,
meant to be used as a resource in specs
.
Example
extern crate shrev;
use shrev::{EventChannel, EventReadData};
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct TestEvent {
data: u32,
}
fn main() {
let mut channel = EventChannel::new();
channel
.drain_vec_write(&mut vec![TestEvent { data: 1 }, TestEvent { data: 2 }])
.expect("");
let mut reader_id = channel.register_reader();
// Should be empty, because reader was created after the write
match channel.read(&mut reader_id) {
Ok(EventReadData::Data(data)) => assert_eq!(
Vec::<TestEvent>::default(),
data.cloned().collect::<Vec<_>>()
),
_ => panic!(),
}
channel
.slice_write(&mut [TestEvent { data: 8 }, TestEvent { data: 9 }])
.expect("");
// Should have data, as a second write was done
match channel.lossy_read(&mut reader_id) {
Ok(data) => assert_eq!(
vec![TestEvent { data: 8 }, TestEvent { data: 9 }],
data.cloned().collect::<Vec<_>>()
),
_ => panic!(),
}
}