added comments to macros

src/kernel/thread.rs

@@ -106,6 +106,7 @@ mod test {
     use super::{Thread, ThreadContext, NUM_INT_REGS, NUM_FP_REGS, ObjectType};
     const DEFAULT_THREAD_NAME: &str = "test_thread";
 
+    /// Polymorphic macro to get thread without passing a name by default
     macro_rules! get_new_thread {
         () => { Thread::new(DEFAULT_THREAD_NAME) };
         ($a:literal) => {
@@ -113,6 +114,9 @@ mod test {
         };
     }
 
+    /// This macro allows for getting a Thread for which we've ensured proper initial state
+    /// in case a commit further down the line changes the initial state of threads generated
+    /// from Thread::new
     macro_rules! expected_initial_state {
         () => { expected_initial_state!(DEFAULT_THREAD_NAME) };
         ($a:expr) => { {