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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <af/defines.h>
#include <af/exception.h>
#include <cuda.h>
#include <cuda_runtime.h>
#ifdef __cplusplus
extern "C" {
#endif
#if AF_API_VERSION >= 31
/**
Get the stream for the CUDA device with \p id in ArrayFire context
\param[out] stream CUDA Stream of device with \p id in ArrayFire context
\param[in] id ArrayFire device id
\returns \ref af_err error code
\ingroup cuda_mat
*/
AFAPI af_err afcu_get_stream(cudaStream_t* stream, int id);
#endif
#if AF_API_VERSION >= 31
/**
Get the native device id of the CUDA device with \p id in ArrayFire context
\param[out] nativeid native device id of the CUDA device with \p id in ArrayFire context
\param[in] id ArrayFire device id
\returns \ref af_err error code
\ingroup cuda_mat
*/
AFAPI af_err afcu_get_native_id(int* nativeid, int id);
#endif
#if AF_API_VERSION >= 32
/**
Set the CUDA device with given native id as the active device for ArrayFire
\param[in] nativeid native device id of the CUDA device
\returns \ref af_err error code
\ingroup cuda_mat
*/
AFAPI af_err afcu_set_native_id(int nativeid);
#endif
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
namespace afcu
{
#if AF_API_VERSION >= 31
/**
Get the stream for the CUDA device with \p id in ArrayFire context
\param[in] id ArrayFire device id
\returns cuda stream used by CUDA device
\ingroup cuda_mat
*/
static inline cudaStream_t getStream(int id)
{
cudaStream_t retVal;
af_err err = afcu_get_stream(&retVal, id);
if (err!=AF_SUCCESS)
throw af::exception("Failed to get CUDA stream from ArrayFire");
return retVal;
}
#endif
#if AF_API_VERSION >= 31
/**
Get the native device id of the CUDA device with \p id in ArrayFire context
\param[in] id ArrayFire device id
\returns cuda native id of device
\ingroup cuda_mat
*/
static inline int getNativeId(int id)
{
int retVal;
af_err err = afcu_get_native_id(&retVal, id);
if (err!=AF_SUCCESS)
throw af::exception("Failed to get CUDA device native id from ArrayFire");
return retVal;
}
#endif
#if AF_API_VERSION >= 32
/**
Set the CUDA device with given native id as the active device for ArrayFire
\param[in] nativeId native device id of the CUDA device
\ingroup cuda_mat
*/
static inline void setNativeId(int nativeId)
{
af_err err = afcu_set_native_id(nativeId);
if (err!=AF_SUCCESS)
throw af::exception("Failed to change active CUDA device to the device with given native id");
}
#endif
}
#endif
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