Expose return value of wait_for

Signed-off-by: Tony Najjar <tony.najjar.1997@gmail.com>

Author: tonynajjar

include/behaviortree_cpp/bt_factory.h

@@ -121,7 +121,7 @@ class Tree
   /// Sleep for a certain amount of time.
   /// This sleep could be interrupted by the method
   /// TreeNode::emitWakeUpSignal()
-  void sleep(std::chrono::system_clock::duration timeout);
+  bool sleep(std::chrono::system_clock::duration timeout);
 
   ~Tree();
 

src/bt_factory.cpp

@@ -586,9 +586,9 @@ TreeNode* Tree::rootNode() const
   return subtree_nodes.empty() ? nullptr : subtree_nodes.front().get();
 }
 
-void Tree::sleep(std::chrono::system_clock::duration timeout)
+bool Tree::sleep(std::chrono::system_clock::duration timeout)
 {
-  wake_up_->waitFor(std::chrono::duration_cast<std::chrono::milliseconds>(timeout));
+  return wake_up_->waitFor(std::chrono::duration_cast<std::chrono::milliseconds>(timeout));
 }
 
 Tree::~Tree()