#pragma once
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#include <c10/util/Optional.h>
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#include <memory>
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#include <vector>
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#include <ATen/core/ivalue.h>
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#include <torch/csrc/WindowsTorchApiMacro.h>
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namespace at {
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class Tensor;
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}
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namespace c10 {
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struct IValue;
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struct OperatorName;
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} // namespace c10
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namespace torch {
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namespace jit {
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// The interpreter run Graphs with Tensor inputs and Tensor outputs
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// a separate component in the autograd handles unwrapping and wrapping
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// variable objects for use in the interpreter.
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struct Node;
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struct GraphExecutor;
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struct CodeImpl;
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struct InterpreterStateImpl;
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struct Graph;
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struct Node;
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struct Instruction;
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using Stack = std::vector<c10::IValue>;
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using c10::ivalue::Future;
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struct TORCH_API Code {
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Code() : pImpl(nullptr) {}
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explicit Code(const std::shared_ptr<Graph>& graph);
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~Code();
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const std::vector<GraphExecutor*>& grad_executors();
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explicit operator bool() const {
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return pImpl != nullptr;
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}
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size_t num_inputs() const;
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size_t num_outputs() const;
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const std::vector<c10::IValue>& constant_table() const;
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const std::vector<Instruction>& instructions() const;
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const std::vector<c10::OperatorName>& opname_table() const;
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size_t register_size() const;
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private:
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std::shared_ptr<CodeImpl> pImpl;
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friend struct InterpreterStateImpl;
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friend std::ostream& operator<<(std::ostream& out, const Code& code);
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};
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struct InterpreterState {
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TORCH_API InterpreterState(const Code& code);
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TORCH_API void run(Stack& stack);
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c10::intrusive_ptr<Future> runAsync(Stack& stack);
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c10::intrusive_ptr<Future> getFuture();
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TORCH_API ~InterpreterState();
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private:
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InterpreterState(c10::intrusive_ptr<c10::intrusive_ptr_target> pImpl);
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// Ideally we should use c10::intrusive_ptr<InterpreterStateImpl> for pImpl;
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// but intrusive_ptr requires full definition of InterpreterStateImpl,
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// which we need to hide in the header.
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c10::intrusive_ptr<c10::intrusive_ptr_target> pImpl;
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friend struct InterpreterStateImpl;
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};
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// Created by wait()
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struct Suspend : public std::exception {
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const char* what() const noexcept override {
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return "Suspend";
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}
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explicit Suspend(c10::intrusive_ptr<Future> future_)
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: future(std::move(future_)) {}
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c10::intrusive_ptr<Future> future;
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};
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struct InterpreterContinuation {
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InterpreterContinuation(
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InterpreterState state_,
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Stack stack_,
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bool grad_mode_enabled_)
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: state(state_),
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stack(std::move(stack_)),
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grad_mode_enabled(grad_mode_enabled_) {}
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void operator()();
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private:
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InterpreterState state;
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Stack stack;
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bool grad_mode_enabled;
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};
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} // namespace jit
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} // namespace torch
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