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fd1220e386
const methods to prevent accidental mutation. changes mainly in Error nodes and PyNode. Pull Request resolved: https://github.com/pytorch/pytorch/pull/147804 Approved by: https://github.com/jansel ghstack dependencies: #147242, #147796
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
#pragma once
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#include <torch/csrc/autograd/function_hook.h>
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#include <torch/csrc/dynamo/compiled_autograd.h>
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namespace torch::autograd::utils {
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// Turns lambda into a torch::autograd::FunctionPostHook.
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class LambdaPostHook : public torch::autograd::FunctionPostHook {
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using variable_list = std::vector<torch::autograd::Variable>;
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using fn_type =
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std::function<variable_list(const variable_list&, const variable_list&)>;
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using compiled_fn_type = std::function<void(CompiledNodeArgs&)>;
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public:
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// The lambda function takes as arguments the outputs and inputs of the
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// autograd function and can modify the outputs of the autograd function by
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// returning a new output if needed.
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/* implicit */ LambdaPostHook(fn_type fn) : fn_(std::move(fn)) {}
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LambdaPostHook(fn_type fn, compiled_fn_type compiled_fn)
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: fn_(std::move(fn)), compiled_fn_(std::move(compiled_fn)) {}
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variable_list operator()(
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const variable_list& outputs,
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const variable_list& inputs) override {
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return fn_(outputs, inputs);
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}
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void compiled_args(CompiledNodeArgs& args) const override {}
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protected:
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std::function<variable_list(const variable_list&, const variable_list&)> fn_;
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compiled_fn_type compiled_fn_{};
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};
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} // namespace torch::autograd::utils
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