Refactor SMFI interface and ectool

tool/src/timeout.rs

@@ -24,11 +24,16 @@ macro_rules! timeout {
     }};
 }
 
+/// Timeout for use in blocking operations
 pub trait Timeout {
+    /// Reset the timeout to its initial state
     fn reset(&mut self);
+
+    /// Check if timeout is still running
     fn running(&self) -> bool;
 }
 
+/// Timeout implemented using std::time
 #[cfg(feature = "std")]
 pub struct StdTimeout {
     instant: Instant,
@@ -37,6 +42,7 @@ pub struct StdTimeout {
 
 #[cfg(feature = "std")]
 impl StdTimeout {
+    /// Create a timeout with the specified duration
     pub fn new(duration: Duration) -> Self {
         StdTimeout {
             instant: Instant::now(),