mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-30 00:47:12 +00:00
3f589379ec
This commit rewrites the examples that look for constructor/destructor calls to do so via static variable tracking rather than output parsing. The added ConstructorStats class provides methods to keep track of constructors and destructors, number of default/copy/move constructors, and number of copy/move assignments. It also provides a mechanism for storing values (e.g. for value construction), and then allows all of this to be checked at the end of a test by getting the statistics for a C++ (or python mapping) class. By not relying on the precise pattern of constructions/destructions, but rather simply ensuring that every construction is matched with a destruction on the same object, we ensure that everything that gets created also gets destroyed as expected. This replaces all of the various "std::cout << whatever" code in constructors/destructors with `print_created(this)`/`print_destroyed(this)`/etc. functions which provide similar output, but now has a unified format across the different examples, including a new ### prefix that makes mixed example output and lifecycle events easier to distinguish. With this change, relaxed mode is no longer needed, which enables testing for proper destruction under MSVC, and under any other compiler that generates code calling extra constructors, or optimizes away any constructors. GCC/clang are used as the baseline for move constructors; the tests are adapted to allow more move constructors to be evoked (but other types are constructors much have matching counts). This commit also disables output buffering of tests, as the buffering sometimes results in C++ output ending up in the middle of python output (or vice versa), depending on the OS/python version.
69 lines
2.4 KiB
CMake
69 lines
2.4 KiB
CMake
# Set a default build configuration if none is specified. 'MinSizeRel' produces the smallest binaries
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to 'MinSizeRel' as none was specified.")
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set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "Choose the type of build." FORCE)
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set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
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"MinSizeRel" "RelWithDebInfo")
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endif()
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set(PYBIND11_EXAMPLES
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example-methods-and-attributes.cpp
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example-python-types.cpp
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example-operator-overloading.cpp
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example-constants-and-functions.cpp
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example-callbacks.cpp
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example-sequences-and-iterators.cpp
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example-buffers.cpp
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example-smart-ptr.cpp
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example-modules.cpp
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example-numpy-vectorize.cpp
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example-arg-keywords-and-defaults.cpp
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example-virtual-functions.cpp
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example-keep-alive.cpp
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example-opaque-types.cpp
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example-pickling.cpp
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example-inheritance.cpp
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example-stl-binder-vector.cpp
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example-eval.cpp
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example-custom-exceptions.cpp
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issues.cpp
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)
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# Check if Eigen is available
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find_package(Eigen3 QUIET)
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if(EIGEN3_FOUND)
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list(APPEND PYBIND11_EXAMPLES eigen.cpp)
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message(STATUS "Building Eigen v${EIGEN3_VERSION} testcase")
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else()
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message(STATUS "NOT Building Eigen testcase")
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endif()
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# Create the binding library
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pybind11_add_module(example example.cpp ${PYBIND11_EXAMPLES})
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pybind11_enable_warnings(example)
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if(EIGEN3_FOUND)
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target_include_directories(example PRIVATE ${EIGEN3_INCLUDE_DIR})
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target_compile_definitions(example PRIVATE -DPYBIND11_TEST_EIGEN)
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endif()
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# Always write the output file directly into the 'example' directory (even on MSVC)
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set(CompilerFlags
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LIBRARY_OUTPUT_DIRECTORY LIBRARY_OUTPUT_DIRECTORY_RELEASE LIBRARY_OUTPUT_DIRECTORY_DEBUG
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LIBRARY_OUTPUT_DIRECTORY_MINSIZEREL LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO
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RUNTIME_OUTPUT_DIRECTORY RUNTIME_OUTPUT_DIRECTORY_RELEASE RUNTIME_OUTPUT_DIRECTORY_DEBUG
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RUNTIME_OUTPUT_DIRECTORY_MINSIZEREL RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO)
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foreach(CompilerFlag ${CompilerFlags})
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set_target_properties(example PROPERTIES ${CompilerFlag} ${PROJECT_SOURCE_DIR}/example)
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endforeach()
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set(RUN_TEST ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/run_test.py)
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foreach(VALUE ${PYBIND11_EXAMPLES})
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string(REGEX REPLACE "^(.+).cpp$" "\\1" EXAMPLE_NAME "${VALUE}")
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add_test(NAME ${EXAMPLE_NAME} COMMAND ${RUN_TEST} ${EXAMPLE_NAME})
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endforeach()
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