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#ifndef CAFFE2_OPERATORS_NO_DEFAULT_ENGINE_OP_H_
#define CAFFE2_OPERATORS_NO_DEFAULT_ENGINE_OP_H_
#include "caffe2/core/context.h"
#include "caffe2/core/logging.h"
#include "caffe2/core/operator.h"
namespace caffe2 {
/**
* A helper class to denote that an op does not have a default engine.
*
* NoDefaultEngineOp is a helper class that one can use to denote that a
* specific operator is not intended to be called without an explicit engine
* given. This is the case for e.g. the communication operators where one has
* to specify a backend (like MPI or ZEROMQ).
*/
template <class Context>
class NoDefaultEngineOp final : public Operator<Context> {
public:
USE_SIMPLE_CTOR_DTOR(NoDefaultEngineOp);
USE_OPERATOR_CONTEXT_FUNCTIONS;
bool RunOnDevice() override {
CAFFE_THROW(
"The operator ",
this->debug_def().type(),
" does not have a default engine implementation. Please "
"specify an engine explicitly for this operator.");
}
};
} // namespace caffe2
#endif // CAFFE2_OPERATORS_NO_DEFAULT_ENGINE_OP_H_
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