rhai/examples/threading.rs

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2021-01-25 04:31:54 +01:00
use rhai::{Engine, RegisterFn, INT};
fn main() {
// Channel: Script -> Master
let (tx_script, rx_master) = std::sync::mpsc::channel();
// Channel: Master -> Script
let (tx_master, rx_script) = std::sync::mpsc::channel();
// Spawn thread with Engine
std::thread::spawn(move || {
// Create Engine
let mut engine = Engine::new();
// Register API
// Notice that the API functions are blocking
engine
.register_fn("get", move || rx_script.recv().unwrap())
.register_fn("put", move |v: INT| tx_script.send(v).unwrap());
// Run script
engine
.consume(
r#"
print("Starting script loop...");
loop {
let x = get();
print("Script Read: " + x);
x += 1;
print("Script Write: " + x);
put(x);
}
"#,
)
.unwrap();
});
// This is the main processing thread
println!("Starting main loop...");
let mut value: INT = 0;
while value < 10 {
println!("Value: {}", value);
// Send value to script
tx_master.send(value).unwrap();
// Receive value from script
value = rx_master.recv().unwrap();
}
}