pytorch/caffe2/operators/is_empty_op.h
Jerry Zhang 2e0f3b038c Tensor construction: combine Resize+mutable_data - 2/4 (#14205)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/14205

Original commit changeset: 8f9fb55842ae

Reviewed By: dzhulgakov

Differential Revision: D13126263

fbshipit-source-id: 12ba89e31b7738a81ec5c660ea7b79e8576c35dc
2018-11-30 10:46:58 -08:00

27 lines
558 B
C++

#ifndef IS_EMPTY_OP_H_
#define IS_EMPTY_OP_H_
#include "caffe2/core/context.h"
#include "caffe2/core/operator.h"
namespace caffe2 {
template <class Context>
class IsEmptyOp : public Operator<Context> {
public:
USE_OPERATOR_CONTEXT_FUNCTIONS;
USE_SIMPLE_CTOR_DTOR(IsEmptyOp);
bool RunOnDevice() override {
auto& input = Input(0);
auto* output = Output(0, std::vector<int64_t>{}, at::dtype<bool>());
*output->template mutable_data<bool>() = (input.numel() == 0);
return true;
}
};
} // namespace caffe2
#endif // IS_EMPTY_OP_H_