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30748f863f
* Avoid heap allocation for function calls with a small number of arguments
We don't have access to llvm::SmallVector or similar, but given the
limited subset of the `std::vector` API that
`function_call::args{,_convert}` need and the "reserve-then-fill"
usage pattern, it is relatively straightforward to implement custom
containers that get the job done.
Seems to improves time to call the collatz function in
pybind/pybind11_benchmark significantly; numbers are a little noisy
but there's a clear improvement from "about 60 ns per call" to "about
45 ns per call" on my machine (M4 Max Mac), as measured with
`timeit.repeat('collatz(4)', 'from pybind11_benchmark import
collatz')`.
* clang-tidy
* more clang-tidy
* clang-tidy NOLINTBEGIN/END instead of NOLINTNEXTLINE
* forgot to increase inline size after removing std::variant
* constexpr arg_vector_small_size, use move instead of swap to hopefully clarify second_pass_convert
* rename test_embed to test_low_level
* rename test_low_level to test_with_catch
* Be careful to NOINLINE slow paths
* rename array/vector members to iarray/hvector. Move comment per request. Add static_asserts for our untagged union implementation per request.
* drop is_standard_layout assertions; see https://github.com/pybind/pybind11/pull/5824#issuecomment-3308616072
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// The Catch implementation is compiled here. This is a standalone
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// translation unit to avoid recompiling it for every test change.
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#include <pybind11/embed.h>
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// Silence MSVC C++17 deprecation warning from Catch regarding std::uncaught_exceptions (up to
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// catch 2.0.1; this should be fixed in the next catch release after 2.0.1).
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PYBIND11_WARNING_DISABLE_MSVC(4996)
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// Catch uses _ internally, which breaks gettext style defines
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#ifdef _
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# undef _
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#endif
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#define CATCH_CONFIG_RUNNER
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#include <catch.hpp>
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namespace py = pybind11;
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int main(int argc, char *argv[]) {
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// Setup for TEST_CASE in test_interpreter.cpp, tagging on a large random number:
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std::string updated_pythonpath("pybind11_test_with_catch_PYTHONPATH_2099743835476552");
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const char *preexisting_pythonpath = getenv("PYTHONPATH");
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if (preexisting_pythonpath != nullptr) {
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#if defined(_WIN32)
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updated_pythonpath += ';';
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#else
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updated_pythonpath += ':';
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#endif
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updated_pythonpath += preexisting_pythonpath;
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}
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#if defined(_WIN32)
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_putenv_s("PYTHONPATH", updated_pythonpath.c_str());
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#else
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setenv("PYTHONPATH", updated_pythonpath.c_str(), /*replace=*/1);
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#endif
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py::scoped_interpreter guard{};
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auto result = Catch::Session().run(argc, argv);
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return result < 0xff ? result : 0xff;
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}
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