[arrayfire] 11/41: BUGFIX clFFT plans when using multiple devices

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to branch debian/experimental
in repository arrayfire.

commit 82144954a13273ef23253cf52bf5d0bf607ae1e9
Author: Shehzan Mohammed <shehzan at arrayfire.com>
Date:   Wed Mar 9 15:12:15 2016 -0500

    BUGFIX clFFT plans when using multiple devices
---
 src/backend/opencl/fft.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/backend/opencl/fft.cpp b/src/backend/opencl/fft.cpp
index d5922f0..7777887 100644
--- a/src/backend/opencl/fft.cpp
+++ b/src/backend/opencl/fft.cpp
@@ -42,12 +42,16 @@ class clFFTPlanner
 
     public:
         static clFFTPlanner& getInstance() {
-            static clFFTPlanner single_instance;
-            return single_instance;
+            static clFFTPlanner instances[opencl::DeviceManager::MAX_DEVICES];
+            return instances[opencl::getActiveDeviceId()];
         }
 
         ~clFFTPlanner() {
-            CLFFT_CHECK(clfftTeardown());
+            static bool flag = true;
+            if(flag) {
+                CLFFT_CHECK(clfftTeardown());
+                flag = false;
+            }
         }
 
     private:

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