1 files changed, 20 insertions, 17 deletions
diff --git a/src/solvers/gpusolver.rs b/src/solvers/gpusolver.rs
index 99274cb..62e6e0f 100644
--- a/src/solvers/gpusolver.rs
+++ b/src/solvers/gpusolver.rs
@@ -19,24 +19,27 @@ pub struct GpuSolver {
 impl GpuSolver {
     fn solve_to_vec(&mut self) -> Vec<RowResult> {
         let (sender, receiver) = std::sync::mpsc::channel();
-        let (sender, handle) =
-            OclManager::launch_sevice(&self.permutations, &self.masks, self.n, 0, sender);
-        let chunk = permutohedron::factorial(self.n as usize - 1) as u32;
-        self.permute(
-            0,
-            0,
-            ((0..(self.h - 2)).map(|x| x * chunk).collect::<Vec<u32>>()).as_ref(),
-            sender.clone(),
-        );
-        sender.send(Message::CpuDone).unwrap();
-        let mut walls = Vec::new();
-        while let Ok(Message::RowResult(wall)) = receiver.recv() {
-            walls.push(wall);
+        if let Ok((sender, handle)) =
+            OclManager::launch_sevice(&self.permutations, &self.masks, self.n, 0, sender)
+        {
+            let chunk = permutohedron::factorial(self.n as usize - 1) as u32;
+            self.permute(
+                0,
+                0,
+                ((0..(self.h - 2)).map(|x| x * chunk).collect::<Vec<u32>>()).as_ref(),
+                sender.clone(),
+            );
+            sender.send(Message::CpuDone).unwrap();
+            let mut walls = Vec::new();
+            while let Ok(Message::RowResult(wall)) = receiver.recv() {
+                walls.push(wall);
+            }
+            sender.send(Message::Terminate).unwrap();
+            //println!("{:?}", walls);
+            handle.join().unwrap();
+            return walls;
         }
-        sender.send(Message::Terminate).unwrap();
-        //println!("{:?}", walls);
-        handle.join().unwrap();
-        walls
+        vec![]
     }
 
     fn permute(&self, index: usize, curr_mask: u64, numbers: &[u32], sender: Sender<Message>) {