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#pragma once
// RAII structs to acquire and release Python's global interpreter lock (GIL)
#include <c10/util/Deprecated.h>
#include <torch/csrc/python_headers.h>
// TODO: Deprecate these structs after we land this diff
// (to avoid -Werror failures)
// Acquires the GIL on construction
struct /* C10_DEPRECATED_MESSAGE(
"Use pybind11::gil_scoped_acquire instead") */
AutoGIL {
AutoGIL() : gstate(PyGILState_Ensure()) {}
~AutoGIL() {
PyGILState_Release(gstate);
}
PyGILState_STATE gstate;
};
// Releases the GIL on construction
struct /* C10_DEPRECATED_MESSAGE(
"Use pybind11::gil_scoped_release instead") */
AutoNoGIL {
AutoNoGIL() : save(PyEval_SaveThread()) {}
~AutoNoGIL() {
PyEval_RestoreThread(save);
}
PyThreadState* save;
};
// Runs the function without the GIL
template <typename F>
/* C10_DEPRECATED */ inline void with_no_gil(F f) {
// TODO: The deprecation here triggers a deprecated use warning
// on some versions of compilers; need to avoid this
AutoNoGIL no_gil;
f();
}
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