cuda: avoid unnecessary cudaStreamSynchronize() call

resolves #11511

cuda: avoid unnecessary cudaStreamSynchronize() call
resolves #11511
f42fca9f · Alexander Alekhin · 3104d2f7 · f42fca9f
Commit f42fca9f authored May 15, 2018 by Alexander Alekhin
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cuda_stream.cpp modules/core/src/cuda_stream.cpp +3 -2

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--- a/modules/core/src/cuda_stream.cpp
+++ b/modules/core/src/cuda_stream.cpp
@@ -594,10 +594,11 @@ namespace

    StackAllocator::~StackAllocator()
    {
-        cudaStreamSynchronize(stream_);
-
        if (memStack_ != 0)
+        {
+            cudaStreamSynchronize(stream_);
            memStack_->pool->returnMemStack(memStack_);
+        }
    }

    size_t alignUp(size_t what, size_t alignment)