8000 Add static bound for add_fd_with_callback · Issue #504 · rust-mobile/ndk · GitHub
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Add static bound for add_fd_with_callback #504

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yyy33 opened this issue Apr 30, 2025 · 0 comments
Open

Add static bound for add_fd_with_callback #504

yyy33 opened this issue Apr 30, 2025 · 0 com 6EDF ments

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@yyy33
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yyy33 commented Apr 30, 2025

Since the callback is leaking into memory, should we add a 'static constraint to it to make sure it's always valid, otherwise a JNIEnv <'local> is captured here, and it compiles. But the JNIEnv is only valid in the scope of the native method on_create

//native jni method
pub fn on_create(mut env: JNIEnv, jactivity: JObject) {
    ThreadLooper::for_thread()
        .unwrap()
        .add_fd_with_callback(fd, FdEvent::INPUT, move || {
            env.call_method(obj, name, sig, args);
        })?;
}
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