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Fix a race for CUDA event in CachingHostAllocator #237

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merged 1 commit into from
Jan 7, 2019
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Fix a race for CUDA event in CachingHostAllocator #237

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9 changes: 5 additions & 4 deletions HeterogeneousCore/CUDAServices/src/CachingHostAllocator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -538,9 +538,6 @@ struct CachingHostAllocator
}
}

// Unlock
mutex.Unlock();

if (CubDebug(error = cudaGetDevice(&entrypoint_device))) return error;
if (entrypoint_device != search_key.device) {
if (CubDebug(error = cudaSetDevice(search_key.device))) return error;
Expand All @@ -550,7 +547,11 @@ struct CachingHostAllocator
// Insert the ready event in the associated stream (must have current device set properly)
if (CubDebug(error = cudaEventRecord(search_key.ready_event, search_key.associated_stream))) return error;
}
else

// Unlock
mutex.Unlock();

if (!recached)
{
// Free the allocation from the runtime and cleanup the event.
if (CubDebug(error = cudaFreeHost(d_ptr))) return error;
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