cudaEvent_tとcudaStream_tのラッパを追加

[cuda.git] / libutils / cuda / Stream.h

diff --git a/libutils/cuda/Stream.h b/libutils/cuda/Stream.h
new file mode 100644 (file)
index 0000000..791cfb1
--- /dev/null
+++ b/libutils/cuda/Stream.h
@@ -0,0 +1,85 @@
+/*
+       Copyright (C) 2012, 2013  fmaj7b5.info
+
+       This program is free software: you can redistribute it and/or modify
+       it under the terms of the GNU General Public License as published by
+       the Free Software Foundation, either version 2 of the License, or
+       (at your option) any later version.
+
+       This program is distributed in the hope that it will be useful,
+       but WITHOUT ANY WARRANTY; without even the implied warranty of
+       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+       GNU General Public License for more details.
+
+       You should have received a copy of the GNU General Public License
+       along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef FM7b5_CUDA_STREAM_H
+#define FM7b5_CUDA_STREAM_H
+
+#include <stdexcept>
+#include <cuda_runtime.h>
+
+class Stream
+{
+public:
+       Stream();
+       ~Stream();
+       operator cudaStream_t();
+
+       cudaError_t query() const;
+       cudaError_t synchronize() const;
+       cudaError_t wait_event(cudaEvent_t event, unsigned int flags) const;
+
+protected:
+       cudaStream_t m_stream;
+};
+
+Stream::Stream()
+{
+       cudaError_t status;
+
+       status = cudaStreamCreate(&m_stream);
+
+       if (status != cudaSuccess) {
+               throw std::runtime_error(cudaGetErrorString(status));
+       }
+}
+
+Stream::~Stream()
+{
+       cudaError_t status;
+
+       status = cudaStreamDestroy(m_stream);
+
+       if (status != cudaSuccess) {
+               throw std::runtime_error(cudaGetErrorString(status));
+       }
+}
+
+Stream::operator cudaStream_t()
+{
+       return m_stream;
+}
+
+cudaError_t
+Stream::query() const
+{
+       return cudaStreamQuery(m_stream);
+}
+
+cudaError_t
+Stream::synchronize() const
+{
+       return cudaStreamSynchronize(m_stream);
+
+}
+
+cudaError_t
+Stream::wait_event(cudaEvent_t event, unsigned int flags) const
+{
+       return cudaStreamWaitEvent(m_stream, event, flags);
+}
+
+#endif /* FM7b5_CUDA_STREAM_H */