hip_ext.h

/*
Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

#ifndef HIP_INCLUDE_HIP_HIP_EXT_H
#define HIP_INCLUDE_HIP_HIP_EXT_H
#include "hip/hip_runtime.h"
#if defined(__cplusplus)
#include <tuple>
#include <type_traits>
#endif
/** @addtogroup Module Module Management
 *  @{
 */

/**
 * @brief launches kernel f with launch parameters and shared memory on stream with arguments passed
 to kernelparams or extra
 *
 * @param [in[ f     Kernel to launch.
 * @param [in] gridDimX  X grid dimension specified in work-items
 * @param [in] gridDimY  Y grid dimension specified in work-items
 * @param [in] gridDimZ  Z grid dimension specified in work-items
 * @param [in] blockDimX X block dimensions specified in work-items
 * @param [in] blockDimY Y grid dimension specified in work-items
 * @param [in] blockDimZ Z grid dimension specified in work-items
 * @param [in] sharedMemBytes Amount of dynamic shared memory to allocate for this kernel.  The
 HIP-Clang compiler provides support for extern shared declarations
 * @param [in] stream Stream where the kernel should be dispatched.  May be 0, in which case th
 default stream is used with associated synchronization rules.
 * @param [in] kernelParams
 * @param [in] extra     Pointer to kernel arguments.   These are passed directly to the kernel and
 must be in the memory layout and alignment expected by the kernel.
 * @param [in] startEvent  If non-null, specified event will be updated to track the start time of
 the kernel launch.  The event must be created before calling this API.
 * @param [in] stopEvent   If non-null, specified event will be updated to track the stop time of
 the kernel launch.  The event must be created before calling this API.
 *
 * @returns hipSuccess, hipInvalidDevice, hipErrorNotInitialized, hipErrorInvalidValue
 *
 * @warning kernellParams argument is not yet implemented in HIP. Please use extra instead. Please
 refer to hip_porting_driver_api.md for sample usage.
 * HIP/ROCm actually updates the start event when the associated kernel completes.
 */
HIP_PUBLIC_API
hipError_t hipExtModuleLaunchKernel(hipFunction_t f, uint32_t globalWorkSizeX,
                                    uint32_t globalWorkSizeY, uint32_t globalWorkSizeZ,
                                    uint32_t localWorkSizeX, uint32_t localWorkSizeY,
                                    uint32_t localWorkSizeZ, size_t sharedMemBytes,
                                    hipStream_t hStream, void** kernelParams, void** extra,
                                    hipEvent_t startEvent = nullptr,
                                    hipEvent_t stopEvent = nullptr,
                                    uint32_t flags = 0);

HIP_PUBLIC_API
hipError_t hipHccModuleLaunchKernel(hipFunction_t f, uint32_t globalWorkSizeX,
                                    uint32_t globalWorkSizeY, uint32_t globalWorkSizeZ,
                                    uint32_t localWorkSizeX, uint32_t localWorkSizeY,
                                    uint32_t localWorkSizeZ, size_t sharedMemBytes,
                                    hipStream_t hStream, void** kernelParams, void** extra,
                                    hipEvent_t startEvent = nullptr,
                                    hipEvent_t stopEvent = nullptr)
                                    __attribute__((deprecated("use hipExtModuleLaunchKernel instead")));

#if defined(__cplusplus)

extern "C" hipError_t hipExtLaunchKernel(const void* function_address, dim3 numBlocks,
                                         dim3 dimBlocks, void** args, size_t sharedMemBytes,
                                         hipStream_t stream, hipEvent_t startEvent,
                                         hipEvent_t stopEvent, int flags);

template <typename... Args, typename F = void (*)(Args...)>
inline void hipExtLaunchKernelGGL(F kernel, const dim3& numBlocks, const dim3& dimBlocks,
                                  std::uint32_t sharedMemBytes, hipStream_t stream,
                                  hipEvent_t startEvent, hipEvent_t stopEvent, std::uint32_t flags,
                                  Args... args) {
    constexpr size_t count = sizeof...(Args);
    auto tup_ = std::tuple<Args...>{args...};
    auto tup = validateArgsCountType(kernel, tup_);
    void* _Args[count];
    pArgs<0>(tup, _Args);

    auto k = reinterpret_cast<void*>(kernel);
    hipExtLaunchKernel(k, numBlocks, dimBlocks, _Args, sharedMemBytes, stream, startEvent,
                       stopEvent, (int)flags);
}

#endif // defined(__cplusplus)

// doxygen end AMD-specific features
/**
 * @}
 */
#endif  // #iidef HIP_INCLUDE_HIP_HIP_EXT_H