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#include <torch/csrc/python_headers.h>
#include <pybind11/chrono.h>
#include <torch/csrc/jit/python/pybind_utils.h>
#include <torch/csrc/utils/pybind.h>
#include <ATen/cuda/CUDAGraph.h>
// Cargo culted partially from csrc/distributed/c10d/init.cpp
// and partially from csrc/cuda/Stream.cpp.
// THCPStream_init is also declared at global scope.
// Because THCPGraph_init is forward declared in the only consumer
// (csrc/Module.cpp) I don't think we need a Graph.h.
template <typename T>
using shared_ptr_class_ = py::class_<T, std::shared_ptr<T>>;
void THCPGraph_init(PyObject* module) {
// Pybind11 patch notes say "py::module_" is more up-to-date syntax,
// but CI linter and some builds prefer "module".
auto torch_C_m = py::handle(module).cast<py::module>();
torch_C_m.def("_graph_pool_handle", &::at::cuda::graph_pool_handle);
shared_ptr_class_<::at::cuda::CUDAGraph>(torch_C_m, "_CUDAGraph")
.def(py::init<>())
// I'm not sure this is the correct order of all the arguments. Pybind11
// docs aren't clear. But it works.
.def(
"capture_begin",
&::at::cuda::CUDAGraph::capture_begin,
py::call_guard<py::gil_scoped_release>(),
py::arg("pool") = c10::cuda::MempoolId_t{0, 0})
.def(
"capture_end",
&::at::cuda::CUDAGraph::capture_end,
py::call_guard<py::gil_scoped_release>())
.def(
"replay",
&::at::cuda::CUDAGraph::replay,
py::call_guard<py::gil_scoped_release>())
.def(
"reset",
&::at::cuda::CUDAGraph::reset,
py::call_guard<py::gil_scoped_release>())
.def(
"pool",
&::at::cuda::CUDAGraph::pool,
py::call_guard<py::gil_scoped_release>());
}
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