Spelling fixes (#571)

* docs: fix spelling and whitespace errors

tokio-threadpool/src/lib.rs

@@ -103,7 +103,7 @@ extern crate log;
 //
 // ## Sleeping workers
 //
-// Sleeping workers are tracked using a [treiber stack]. This results in the
+// Sleeping workers are tracked using a [Treiber stack]. This results in the
 // thread that most recently went to sleep getting woken up first. When the pool
 // is not under load, this helps threads shutdown faster.
 //
@@ -137,7 +137,7 @@ extern crate log;
 // Also, whenever a worker is woken up via a signal and it does find work, it,
 // in turn, will try to wake up a new worker.
 //
-// [treiber stack]: https://en.wikipedia.org/wiki/Treiber_Stack
+// [Treiber stack]: https://en.wikipedia.org/wiki/Treiber_Stack
 
 pub mod park;
 

tokio-threadpool/src/pool/backup.rs

@@ -40,7 +40,7 @@ pub(crate) struct Backup {
     /// * If the thread is running
     state: AtomicUsize,
 
-    /// Next entry in the treiber stack.
+    /// Next entry in the Treiber stack.
     next_sleeper: UnsafeCell<BackupId>,
 
     /// Used to put the thread to sleep

tokio-threadpool/src/pool/backup_stack.rs

@@ -22,7 +22,7 @@ pub(crate) const EMPTY: BackupId = BackupId(MAX_BACKUP);
 /// Used to mark the stack as terminated
 pub(crate) const TERMINATED: BackupId = BackupId(EMPTY.0 + 1);
 
-/// How many bits the treiber ABA guard is offset by
+/// How many bits the Treiber ABA guard is offset by
 const ABA_GUARD_SHIFT: usize = 16;
 
 #[cfg(target_pointer_width = "64")]
@@ -165,7 +165,7 @@ impl State {
     fn set_head(&mut self, val: BackupId) {
         let val = val.0;
 
-        // The ABA guard protects against the ABA problem w/ treiber stacks
+        // The ABA guard protects against the ABA problem w/ Treiber stacks
         let aba_guard = ((self.0 >> ABA_GUARD_SHIFT) + 1) & ABA_GUARD_MASK;
 
         self.0 = (aba_guard << ABA_GUARD_SHIFT) | val;

tokio-threadpool/src/task/blocking.rs

@@ -14,7 +14,7 @@ use std::thread;
 /// Manages the state around entering a blocking section and tasks that are
 /// queued pending the ability to block.
 ///
-/// This is a hybrid counter and instrusive mpsc channel (like `Queue`).
+/// This is a hybrid counter and intrusive mpsc channel (like `Queue`).
 #[derive(Debug)]
 pub(crate) struct Blocking {
     /// Queue head.

tokio-threadpool/src/worker/mod.rs

@@ -732,7 +732,7 @@ impl Worker {
                     }
                 }
                 Shutdown | Running => {
-                    // To get here, the block above transitioned the tate to
+                    // To get here, the block above transitioned the state to
                     // `Sleeping`. No other thread can concurrently
                     // transition to `Shutdown` or `Running`.
                     unreachable!();
@@ -805,7 +805,7 @@ impl Worker {
                         }
                     }
                     Shutdown | Running => {
-                        // To get here, the block above transitioned the tate to
+                        // To get here, the block above transitioned the state to
                         // `Sleeping`. No other thread can concurrently
                         // transition to `Shutdown` or `Running`.
                         unreachable!();

tokio-threadpool/src/worker/stack.rs

@@ -46,7 +46,7 @@ pub(crate) const EMPTY: usize = MAX_WORKERS;
 /// Used to mark the stack as terminated
 pub(crate) const TERMINATED: usize = EMPTY + 1;
 
-/// How many bits the treiber ABA guard is offset by
+/// How many bits the Treiber ABA guard is offset by
 const ABA_GUARD_SHIFT: usize = 16;
 
 #[cfg(target_pointer_width = "64")]
@@ -215,7 +215,7 @@ impl State {
 
     #[inline]
     fn set_head(&mut self, val: usize) {
-        // The ABA guard protects against the ABA problem w/ treiber stacks
+        // The ABA guard protects against the ABA problem w/ Treiber stacks
         let aba_guard = ((self.0 >> ABA_GUARD_SHIFT) + 1) & ABA_GUARD_MASK;
 
         self.0 = (aba_guard << ABA_GUARD_SHIFT) | val;