From 0ce916961b06a4aa61ae14f6a34c6f1ff99018df Mon Sep 17 00:00:00 2001
From: Michael Fairley <michaelfairley@gmail.com>
Date: Tue, 16 May 2017 17:21:03 -0500
Subject: [PATCH] Don't try to stop the runloop until it's definitely running

---
 src/fsevent.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/fsevent.rs b/src/fsevent.rs
index a94f9b59..29addd0c 100644
--- a/src/fsevent.rs
+++ b/src/fsevent.rs
@@ -85,6 +85,10 @@ struct StreamContextInfo {
     recursive_info: HashMap<PathBuf, bool>,
 }
 
+extern "C" {
+    pub fn CFRunLoopIsWaiting(runloop: cf::CFRunLoopRef) -> bool;
+}
+
 impl FsEventWatcher {
     #[inline]
     fn is_running(&self) -> bool {
@@ -99,6 +103,11 @@ impl FsEventWatcher {
         if let Some(runloop) = self.runloop {
             unsafe {
                 let runloop = runloop as *mut libc::c_void;
+
+                while !CFRunLoopIsWaiting(runloop) {
+                    thread::yield_now();
+                }
+
                 cf::CFRunLoopStop(runloop);
             }
         }