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#pragma once
#include <c10/core/Allocator.h>
#include <c10/util/Exception.h>
#include <c10/util/Registry.h>
#include <ATen/detail/AcceleratorHooksInterface.h>
// NB: Class must live in `at` due to limitations of Registry.h.
namespace at {
// The HIPHooksInterface is an omnibus interface for any HIP functionality
// which we may want to call into from CPU code (and thus must be dynamically
// dispatched, to allow for separate compilation of HIP code). See
// CUDAHooksInterface for more detailed motivation.
struct TORCH_API HIPHooksInterface : AcceleratorHooksInterface {
// This should never actually be implemented, but it is used to
// squelch -Werror=non-virtual-dtor
~HIPHooksInterface() override = default;
void init() const override {
TORCH_CHECK(false, "Cannot initialize HIP without ATen_hip library.");
}
const Generator& getDefaultGenerator(
[[maybe_unused]] DeviceIndex device_index = -1) const override {
TORCH_CHECK(false, "Cannot initialize HIP without ATen_hip library.");
}
virtual bool hasHIP() const {
return false;
}
virtual c10::DeviceIndex current_device() const {
return -1;
}
bool isPinnedPtr(const void* /*data*/ ) const override {
return false;
}
Allocator* getPinnedMemoryAllocator() const override {
TORCH_CHECK(false, "Pinned memory requires HIP.");
}
virtual int getNumGPUs() const {
return 0;
}
bool hasPrimaryContext(DeviceIndex /*device_index*/ ) const override {
TORCH_CHECK(false, "Cannot check primary context without ATen_hip library.");
}
};
// NB: dummy argument to suppress "ISO C++11 requires at least one argument
// for the "..." in a variadic macro"
struct TORCH_API HIPHooksArgs {};
TORCH_DECLARE_REGISTRY(HIPHooksRegistry, HIPHooksInterface, HIPHooksArgs);
#define REGISTER_HIP_HOOKS(clsname) \
C10_REGISTER_CLASS(HIPHooksRegistry, clsname, clsname)
namespace detail {
TORCH_API const HIPHooksInterface& getHIPHooks();
} // namespace detail
} // namespace at
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