提交 e3a642e0 编写于 作者: Y Yu Yang

Extract BaseClass of grad_op_desc_maker and add some common method

上级 d9e3c4ff
......@@ -14,6 +14,7 @@
#pragma once
#include "paddle/framework/grad_op_desc_maker.h"
#include "paddle/framework/op_info.h"
#include "paddle/framework/op_proto_maker.h"
#include "paddle/framework/operator.h"
......@@ -96,7 +97,10 @@ struct OpInfoFiller<T, kOpProtoAndCheckerMaker> {
template <typename T>
struct OpInfoFiller<T, kGradOpDescMaker> {
void operator()(const char* op_type, OpInfo* info) const {
info->grad_op_maker_ = new T();
info->grad_op_maker_ = [](const OpDescBind& fwd_op) {
T maker(fwd_op);
return maker();
};
}
};
} // namespace details
......
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
#pragma once
#include "paddle/framework/op_desc.h"
#include "paddle/framework/operator.h"
namespace paddle {
namespace framework {
class GradOpDescMakerBase {
public:
explicit GradOpDescMakerBase(const OpDescBind& fwd_op) : fwd_op_(fwd_op) {}
virtual ~GradOpDescMakerBase() = default;
virtual std::vector<OpDescBind> operator()() const = 0;
protected:
static std::vector<std::string> ToGradNames(
const std::vector<std::string>& var_names) {
std::vector<std::string> ret_val;
ret_val.reserve(var_names.size());
std::transform(var_names.begin(), var_names.end(),
std::back_inserter(ret_val), GradVarName);
return ret_val;
}
std::vector<std::string> InputGrad(const std::string& name) const {
return ToGradNames(fwd_op_.Input(name));
}
std::vector<std::string> OutputGrad(const std::string& name) const {
return ToGradNames(fwd_op_.Output(name));
}
std::vector<std::string> InputParamNames() const {
return this->fwd_op_.InputParamNames();
}
std::vector<std::string> OutputParamNames() const {
return this->fwd_op_.OutputParamNames();
}
std::vector<std::string> Input(const std::string& name) const {
return fwd_op_.Input(name);
}
std::vector<std::string> Output(const std::string& name) const {
return fwd_op_.Output(name);
}
const std::unordered_map<std::string, Attribute>& Attrs() const {
return fwd_op_.GetAttrMap();
}
const Attribute& GetAttr(const std::string& name) const {
auto& map = fwd_op_.GetAttrMap();
auto it = map.find(name);
PADDLE_ENFORCE(it != map.end(), "Cannot find attribute %s", name);
return it->second;
}
std::string ForwardOpType() const { return this->fwd_op_.Type(); }
private:
const OpDescBind& fwd_op_;
};
class SingleGradOpDescMaker : public GradOpDescMakerBase {
public:
std::vector<OpDescBind> operator()() const { return {this->Apply()}; }
protected:
virtual OpDescBind Apply() const = 0;
};
class DefaultGradOpDescMaker : public SingleGradOpDescMaker {
protected:
virtual OpDescBind Apply() const {
OpDescBind grad;
grad.SetType(this->GradOpType());
for (auto& input_param : this->InputParamNames()) {
grad.SetInput(input_param, this->Input(input_param));
grad.SetOutput(GradVarName(input_param), this->InputGrad(input_param));
}
for (auto& output_param : this->OutputParamNames()) {
grad.SetInput(output_param, this->Output(output_param));
grad.SetInput(GradVarName(output_param), this->OutputGrad(output_param));
}
grad.SetAttrMap(this->Attrs());
return grad;
}
virtual std::string GradOpType() const {
return this->ForwardOpType() + "_grad";
}
};
} // namespace framework
} // namespace paddle
......@@ -60,17 +60,31 @@ class OpDescBind {
void SetBlockAttr(const std::string &name, BlockDescBind &block);
// Only be used in C++
void SetAttrMap(const std::unordered_map<std::string, Attribute> &attr_map);
Attribute GetAttr(const std::string &name) const;
int GetBlockAttr(const std::string &name) const;
// Only be used in C++
// The following methods should only be used in C++
const std::unordered_map<std::string, Attribute> &GetAttrMap() const;
void SetAttrMap(const std::unordered_map<std::string, Attribute> &attr_map);
std::vector<std::string> InputParamNames() const { return MapKeys(inputs_); }
std::vector<std::string> OutputParamNames() const {
return MapKeys(outputs_);
}
private:
template <typename MapType>
static std::vector<typename MapType::key_type> MapKeys(const MapType &map) {
std::vector<typename MapType::key_type> ret_val;
ret_val.reserve(map.size());
std::transform(
map.begin(), map.end(), ret_val.begin(),
[](const typename MapType::value_type &pair) { return pair.first; });
return ret_val;
}
struct SetAttrDescVisitor : public boost::static_visitor<void> {
explicit SetAttrDescVisitor(OpDesc::Attr *attr) : attr_(attr) {}
mutable OpDesc::Attr *attr_;
......
......@@ -29,16 +29,10 @@ using OpCreator = std::function<OperatorBase*(
const std::string& /*type*/, const VariableNameMap& /*inputs*/,
const VariableNameMap& /*outputs*/, const AttributeMap& /*attrs*/)>;
class GradOpDescMakerBase {
public:
virtual ~GradOpDescMakerBase() = default;
virtual std::vector<OpDescBind> operator()(const OpDescBind&) const = 0;
};
struct OpInfo {
OpCreator creator_;
std::string grad_op_type_;
GradOpDescMakerBase* grad_op_maker_{nullptr};
std::function<std::vector<OpDescBind>(const OpDescBind&)> grad_op_maker_;
OpProto* proto_{nullptr};
OpAttrChecker* checker_{nullptr};
......
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