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emerybergerclaude
emeryberger
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Windows memory profiling (#965)
* Windows memory profiling. * Windows memory profiling. * Force vendor dir creation. * Clean up type errors. * Mollify ruff. * Fixed assertion. * Ensure vendor dependencies are downloaded. * Disable decorator smoke test on Windows CI. The decorator smoke test relies on CPU signal sampling, which uses signal.raise_signal(SIGBREAK) from a background thread on Windows. This doesn't work reliably in the GitHub Actions Windows environment, causing the test to fail with an empty functions list. This is the same issue that caused the signal smoketest to be disabled on Windows previously. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Lines changed: 3281 additions & 92 deletions

‎.github/workflows/run-linters.yml‎

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- name: install test dependencies
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run: |
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python3 -m pip install mypy ruff
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python3 -m pip install mypy ruff types-PyYAML
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python3 -m pip install .
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- name: Run linters

‎.github/workflows/test-smoketests.yml‎

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- name: profile-interval smoke test
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run: python -m scalene run --profile-interval=2 test/testme.py && python -m scalene view --cli
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# NOTE: The decorator smoke test relies on CPU signal sampling which
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# doesn't work reliably on Windows CI (similar to the signal smoketest).
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- name: decorator smoke test
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if: matrix.os != 'windows-latest'
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run: python test/smoketest_profile_decorator.py
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# NOTE: this is a regression test for signals not being

‎CMakeLists.txt‎

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cmake_minimum_required(VERSION 3.15)
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project(scalene VERSION 1.0 LANGUAGES C CXX)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# FetchContent for downloading dependencies
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include(FetchContent)
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# Fetch Heap-Layers (required for all platforms)
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set(HEAP_LAYERS_DIR "${CMAKE_SOURCE_DIR}/vendor/Heap-Layers")
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if(NOT EXISTS "${HEAP_LAYERS_DIR}/heaplayers.h")
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message(STATUS "Fetching Heap-Layers...")
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FetchContent_Declare(
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heap_layers
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GIT_REPOSITORY https://github.com/emeryberger/Heap-Layers.git
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GIT_TAG master
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GIT_SHALLOW TRUE
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SOURCE_DIR ${HEAP_LAYERS_DIR}
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)
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FetchContent_MakeAvailable(heap_layers)
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endif()
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# Fetch printf library (required for all platforms)
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set(PRINTF_DIR "${CMAKE_SOURCE_DIR}/vendor/printf")
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if(NOT EXISTS "${PRINTF_DIR}/printf.cpp")
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message(STATUS "Fetching printf library...")
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FetchContent_Declare(
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printf_lib
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GIT_REPOSITORY https://github.com/mpaland/printf.git
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GIT_TAG master
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GIT_SHALLOW TRUE
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SOURCE_DIR ${PRINTF_DIR}
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)
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FetchContent_MakeAvailable(printf_lib)
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# Create printf.cpp symlink/copy from printf.c
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if(WIN32)
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file(COPY "${PRINTF_DIR}/printf.c" DESTINATION "${PRINTF_DIR}")
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file(RENAME "${PRINTF_DIR}/printf.c" "${PRINTF_DIR}/printf.cpp")
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# Actually we need to keep both, so copy instead
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file(READ "${PRINTF_DIR}/printf.c" PRINTF_CONTENT)
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file(WRITE "${PRINTF_DIR}/printf.cpp" "${PRINTF_CONTENT}")
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else()
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execute_process(
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COMMAND ${CMAKE_COMMAND} -E create_symlink printf.c printf.cpp
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WORKING_DIRECTORY ${PRINTF_DIR}
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)
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endif()
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# Patch printf.h to comment out the macro definitions
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file(READ "${PRINTF_DIR}/printf.h" PRINTF_H_CONTENT)
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string(REPLACE "#define printf printf_" "//#define printf printf_" PRINTF_H_CONTENT "${PRINTF_H_CONTENT}")
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string(REPLACE "#define vsnprintf vsnprintf_" "//#define vsnprintf vsnprintf_" PRINTF_H_CONTENT "${PRINTF_H_CONTENT}")
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file(WRITE "${PRINTF_DIR}/printf.h" "${PRINTF_H_CONTENT}")
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endif()
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# Find Python
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find_package(Python3 REQUIRED COMPONENTS Development)
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# Detect architecture
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if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64|arm64")
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set(SCALENE_ARCH "ARM64")
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message(STATUS "Building for ARM64 architecture")
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "AMD64|x86_64")
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set(SCALENE_ARCH "X64")
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message(STATUS "Building for x86-64 architecture")
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i[3-6]86|x86")
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set(SCALENE_ARCH "X86")
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message(STATUS "Building for x86 architecture")
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else()
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message(WARNING "Unknown architecture: ${CMAKE_SYSTEM_PROCESSOR}")
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set(SCALENE_ARCH "UNKNOWN")
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endif()
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# Common include directories
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set(SCALENE_INCLUDES
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${CMAKE_SOURCE_DIR}/src
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${CMAKE_SOURCE_DIR}/src/include
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers/heaps
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers/heaps/threads
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers/heaps/utility
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers/wrappers
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${CMAKE_SOURCE_DIR}/vendor/Heap-Layers/utility
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${CMAKE_SOURCE_DIR}/vendor/printf
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${Python3_INCLUDE_DIRS}
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)
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# Platform-specific configuration
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if(WIN32)
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# Windows build
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message(STATUS "Configuring Windows build")
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# Download Microsoft Detours for native malloc/free hooking
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FetchContent_Declare(
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detours
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GIT_REPOSITORY https://github.com/microsoft/Detours.git
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GIT_TAG main
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GIT_SHALLOW TRUE
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)
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FetchContent_MakeAvailable(detours)
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# Microsoft Detours sources
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set(DETOURS_SOURCES
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${detours_SOURCE_DIR}/src/detours.cpp
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${detours_SOURCE_DIR}/src/modules.cpp
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${detours_SOURCE_DIR}/src/disasm.cpp
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${detours_SOURCE_DIR}/src/image.cpp
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${detours_SOURCE_DIR}/src/creatwth.cpp
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)
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# Add architecture-specific disassembler
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if(SCALENE_ARCH STREQUAL "ARM64")
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list(APPEND DETOURS_SOURCES ${detours_SOURCE_DIR}/src/disolarm64.cpp)
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message(STATUS "Using ARM64 Detours disassembler")
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elseif(SCALENE_ARCH STREQUAL "X64")
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list(APPEND DETOURS_SOURCES ${detours_SOURCE_DIR}/src/disolx64.cpp)
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message(STATUS "Using x64 Detours disassembler")
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elseif(SCALENE_ARCH STREQUAL "X86")
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list(APPEND DETOURS_SOURCES ${detours_SOURCE_DIR}/src/disolx86.cpp)
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message(STATUS "Using x86 Detours disassembler")
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endif()
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add_library(scalene SHARED
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src/source/libscalene_windows.cpp
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vendor/printf/printf.cpp
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${DETOURS_SOURCES}
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)
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target_include_directories(scalene PRIVATE
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${SCALENE_INCLUDES}
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${detours_SOURCE_DIR}/src
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)
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target_compile_definitions(scalene PRIVATE
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WIN32_LEAN_AND_MEAN
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_REENTRANT=1
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NDEBUG
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HL_USE_XXREALLOC=1
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SCALENE_LIBSCALENE_BUILD=1
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_CRT_SECURE_NO_WARNINGS=1
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)
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target_compile_options(scalene PRIVATE
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/W3
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/O2
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/EHsc
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)
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target_link_libraries(scalene PRIVATE
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kernel32
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user32
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psapi
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${Python3_LIBRARIES}
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)
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# Output to scalene directory (without Release/Debug subdirectory)
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set_target_properties(scalene PROPERTIES
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OUTPUT_NAME "libscalene"
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LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/scalene"
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RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/scalene"
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# Prevent MSBuild from adding configuration subdirectories
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LIBRARY_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/scalene"
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LIBRARY_OUTPUT_DIRECTORY_RELEASE "${CMAKE_SOURCE_DIR}/scalene"
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RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/scalene"
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RUNTIME_OUTPUT_DIRECTORY_RELEASE "${CMAKE_SOURCE_DIR}/scalene"
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)
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elseif(APPLE)
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# macOS build
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message(STATUS "Configuring macOS build")
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add_library(scalene SHARED
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src/source/libscalene.cpp
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vendor/Heap-Layers/wrappers/macwrapper.cpp
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vendor/printf/printf.cpp
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)
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target_include_directories(scalene PRIVATE ${SCALENE_INCLUDES})
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target_compile_definitions(scalene PRIVATE
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_REENTRANT=1
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NDEBUG
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HL_USE_XXREALLOC=1
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)
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target_compile_options(scalene PRIVATE
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-Wall
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-O3
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-fno-builtin-malloc
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-fvisibility=hidden
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-flto
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-ftls-model=initial-exec
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-ftemplate-depth=1024
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)
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# Universal binary support (x86_64 and arm64)
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if(CMAKE_OSX_ARCHITECTURES)
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# Use specified architectures
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else()
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# Default to native architecture
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set(CMAKE_OSX_ARCHITECTURES "${CMAKE_SYSTEM_PROCESSOR}")
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endif()
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target_link_libraries(scalene PRIVATE
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dl
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pthread
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)
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set_target_properties(scalene PROPERTIES
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OUTPUT_NAME "scalene"
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PREFIX "lib"
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SUFFIX ".dylib"
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LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/scalene"
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)
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else()
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# Linux build
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message(STATUS "Configuring Linux build")
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add_library(scalene SHARED
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src/source/libscalene.cpp
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vendor/Heap-Layers/wrappers/gnuwrapper.cpp
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vendor/printf/printf.cpp
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)
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target_include_directories(scalene PRIVATE
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${SCALENE_INCLUDES}
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/usr/include/nptl
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)
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target_compile_definitions(scalene PRIVATE
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_REENTRANT=1
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NDEBUG
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HL_USE_XXREALLOC=1
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)
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target_compile_options(scalene PRIVATE
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-Wall
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-O3
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-pipe
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-fno-builtin-malloc
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-fvisibility=hidden
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-fPIC
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-Bsymbolic
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)
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target_link_libraries(scalene PRIVATE
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dl
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pthread
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)
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set_target_properties(scalene PROPERTIES
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OUTPUT_NAME "scalene"
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PREFIX "lib"
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SUFFIX ".so"
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LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/scalene"
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)
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endif()
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# Installation
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install(TARGETS scalene
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LIBRARY DESTINATION scalene
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RUNTIME DESTINATION scalene
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)
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# Custom target for vendored dependencies (now handled automatically via FetchContent)
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add_custom_target(vendor-deps
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COMMAND ${CMAKE_COMMAND} -E echo "Vendor dependencies are managed automatically via FetchContent."
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WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
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)

‎GNUmakefile‎

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vendor-deps: vendor/Heap-Layers vendor/printf/printf.cpp
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mypy:
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-mypy --no-warn-unused-ignores $(PYTHON_SOURCES)
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# Requires: pip install mypy types-PyYAML
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-mypy $(PYTHON_SOURCES)
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format: black clang-format prettier
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‎Makefile‎

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# $(CXX) $(CXXFLAGS) $(INCLUDES) $(SRC) /o $(LIBFILE)
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mypy:
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# Requires: pip install mypy types-PyYAML
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-mypy $(PYTHON_SOURCES)
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format: black isort clang-format

CLAUDE.md renamed to agents/CLAUDE.md

File renamed without changes.

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