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rs/AsyncCallback: Join thread before creating new one #1542

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Jan 12, 2023
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rs/AsyncCallback: Join thread before creating new one #1542

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9 changes: 5 additions & 4 deletions test/Rust/src/concurrent/AsyncCallback.lf
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ target Rust {
cargo-features: ["cli"]
}

main reactor AsyncCallback(period: time(1 msec)) {
main reactor AsyncCallback(period: time(10 msec)) {
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preamble {= use std::thread; =}

timer t(0, period)
Expand All @@ -19,6 +19,9 @@ main reactor AsyncCallback(period: time(1 msec)) {
reaction(t) -> act {=
let act = act.clone();
let period = self.period;
if let Some(old_thread) = self.thread.take() {
old_thread.join().ok();
}
// start new thread
let new_thread = ctx.spawn_physical_thread(move |ctx| {
// Simulate time passing before a callback occurs
Expand All @@ -31,9 +34,7 @@ main reactor AsyncCallback(period: time(1 msec)) {
ctx.schedule_physical(&act, Asap).ok();
});

if let Some(old_thread) = self.thread.replace(new_thread) {
old_thread.join().ok();
}
self.thread.replace(new_thread);
=}

reaction(act) {=
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