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