fixed crash when switching to an instance with a lower refresh thread count

fixed rare race condition when waking up handle closer threads

2 files changed, 14 insertions, 1 deletions

diff --git a/src/envfs.cpp b/src/envfs.cpp
index a67faf84..4aaef082 100644
--- a/src/envfs.cpp
+++ b/src/envfs.cpp
@@ -173,7 +173,11 @@ public:
 
   void wakeup()
   {
-    m_ready = true;
+    {
+      std::unique_lock lock(m_mutex);
+      m_ready = true;
+    }
+
     m_cv.notify_one();
   }
 
diff --git a/src/envfs.h b/src/envfs.h
index 8790b071..bbc27005 100644
--- a/src/envfs.h
+++ b/src/envfs.h
@@ -128,6 +128,15 @@ private:
       thread = std::thread([&]{ run(); });
     }
 
+    ~ThreadInfo()
+    {
+      if (thread.joinable()) {
+        stop = true;
+        wakeup();
+        thread.join();
+      }
+    }
+
     void wakeup()
     {
       {