dtourolleandClaude Opus 4.8
50032ffce3
Add a contended SPSC stress suite (tests/test_channel_stress.cpp) that actually exercises the ring's memory-ordering pairing and spin/futex/ lost-wakeup logic, plus the CMake and CI plumbing to run it under TSan: - KPN_SANITIZER cache var + kpn_sanitizer_flags() helper (no-op when unset) - kpn_tests_stress executable, labelled "stress" for CTest - reusable tsan.yaml workflow (gcc:14 builder image, already ships libtsan) - ci.yaml gains a tsan job on the same code/dockerfile triggers as test Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
113 lines
4.9 KiB
CMake
113 lines
4.9 KiB
CMake
cmake_minimum_required(VERSION 3.21)
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project(kpnpp VERSION 0.1.0 LANGUAGES CXX)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_EXTENSIONS OFF)
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option(KPN_BUILD_TESTS "Build tests" ON)
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option(KPN_BUILD_PYTHON "Build Python bindings (requires nanobind)" ON)
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option(KPN_BUILD_EXAMPLES "Build examples" ON)
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option(KPN_WEB_DEBUG "Enable web debug UI (cpp-httplib)" OFF)
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# Sanitizer build. Empty = off. Accepts "thread", "address", "undefined",
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# or a combination like "address,undefined". Applied to all kpn targets via
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# the kpn_sanitizer_flags() helper below.
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#
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# The lock-free SPSC Channel<T> (include/kpn/channel.hpp) has hand-reasoned
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# acquire/release ordering; -DKPN_SANITIZER=thread + the channel stress test
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# (tests/test_channel_stress.cpp) is the dynamic half of verifying it. The
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# static half is the CDSChecker model-check harness (see verify/).
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set(KPN_SANITIZER "" CACHE STRING
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"Build with sanitizer: thread | address | undefined | <combo> (empty = off)")
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# Translate KPN_SANITIZER into compile/link flags. No-op when empty.
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function(kpn_sanitizer_flags out_var)
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if(KPN_SANITIZER)
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set(${out_var}
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-fsanitize=${KPN_SANITIZER}
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-fno-omit-frame-pointer
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-g
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PARENT_SCOPE)
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else()
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set(${out_var} "" PARENT_SCOPE)
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endif()
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endfunction()
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# ── Core library (header-only) ────────────────────────────────────────────────
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add_library(kpn INTERFACE)
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target_include_directories(kpn INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:include>
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)
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target_compile_features(kpn INTERFACE cxx_std_20)
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# Threads required by node/channel implementation
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find_package(Threads REQUIRED)
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target_link_libraries(kpn INTERFACE Threads::Threads)
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# ── Web debug UI (optional) ───────────────────────────────────────────────────
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if(KPN_WEB_DEBUG)
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include(FetchContent)
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FetchContent_Declare(
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cpp-httplib
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GIT_REPOSITORY https://github.com/yhirose/cpp-httplib.git
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GIT_TAG v0.18.0
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)
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FetchContent_MakeAvailable(cpp-httplib)
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# httplib made available but NOT forced onto kpn interface — targets opt in
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# by defining KPN_WEB_DEBUG=1 and linking httplib::httplib themselves.
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# This prevents tests and other examples from pulling in the HTTP server.
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endif()
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# Convenience function for targets that want web debug
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function(kpn_target_enable_web_debug target)
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target_compile_definitions(${target} PRIVATE KPN_WEB_DEBUG=1)
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target_link_libraries(${target} PRIVATE httplib::httplib)
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endfunction()
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# ── Tests ─────────────────────────────────────────────────────────────────────
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if(KPN_BUILD_TESTS)
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enable_testing()
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add_subdirectory(tests)
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endif()
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# ── Benchmarks ────────────────────────────────────────────────────────────────
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option(KPN_BUILD_BENCHMARKS "Build benchmarks" OFF)
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if(KPN_BUILD_BENCHMARKS)
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add_subdirectory(benchmarks)
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endif()
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# ── Python bindings ───────────────────────────────────────────────────────────
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if(KPN_BUILD_PYTHON)
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find_package(Python 3.8 COMPONENTS Interpreter Development.Module REQUIRED)
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find_package(nanobind CONFIG QUIET)
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if(NOT nanobind_FOUND)
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# Fall back to FetchContent if nanobind not installed system-wide
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include(FetchContent)
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FetchContent_Declare(
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nanobind
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GIT_REPOSITORY https://github.com/wjakob/nanobind.git
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GIT_TAG v2.12.0
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)
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FetchContent_MakeAvailable(nanobind)
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endif()
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add_subdirectory(python)
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endif()
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# ── Examples ──────────────────────────────────────────────────────────────────
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if(KPN_BUILD_EXAMPLES)
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add_subdirectory(examples)
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endif()
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# ── Docs (README generation) ──────────────────────────────────────────────────
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find_package(Python3 QUIET COMPONENTS Interpreter)
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if(Python3_FOUND)
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add_custom_target(docs
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COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/render_readme.py
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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COMMENT "Rendering README.md from README.md.in"
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VERBATIM
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)
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endif()
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