#include <ATen/core/VariableHooksInterface.h>

namespace at::impl {

namespace {
VariableHooksInterface* hooks = nullptr;
}

void SetVariableHooks(VariableHooksInterface* h) {
  hooks = h;
}
VariableHooksInterface* GetVariableHooks() {
  TORCH_CHECK(hooks, "Support for autograd has not been loaded; have you linked against libtorch.so?")
  return hooks;
}
bool HasVariableHooks() {
  return hooks != nullptr;
}

} // namespace at::impl