Release v0.1.4

Changes

Added

• Add is_creator() method to shared_memory class to determine if the object created the segment or opened existing
  • Returns true if the object created the shared memory, false if it opened existing
  • Useful for conditional initialization and cleanup responsibilities
  • Works with all creation modes: create_only, open_existing, open_or_create, open_always
  • Creator status is preserved during move operations
  • Windows: Tracks via GetLastError() != ERROR_ALREADY_EXISTS after CreateFileMapping()
  • POSIX: Returns existing owns_shm_ flag value
• Add comprehensive test suite for is_creator() functionality (10 new test cases in test_is_creator.cpp)
  • Tests all creation modes
  • Tests move constructor and move assignment semantics
  • Tests no-throw constructors
  • Tests invalid objects
• Add detailed API documentation for is_creator() in docs/api_reference.md with usage examples
• Add feature to README features list

Release v0.1.3

Changes

Fixed

• Add missing <type_traits> include in error.hpp to fix compilation with strict compilers
• Fix Windows handle validation in create(), open(), and map_impl() to properly check for both NULL and INVALID_HANDLE_VALUE
• Add missing error.hpp and types.hpp includes in platform.hpp to resolve dependency issues
• Add documentation comment to POSIX format_name() clarifying preconditions
• Fix Windows UTF-8 to UTF-16 name conversion buffer sizing in shared memory mapping
• Fix POSIX create/open_or_create/open_always logic to avoid unlinking existing segments and to allow read-only open_or_create
• Reject POSIX shared memory name of '/' and add tests for read-only create/open_or_create and slash-only name validation
• Fix unsafe atomic initialization in advanced_sync example (removed placement new on std::atomic in shared memory)
• Fix memory ordering in advanced_sync example initialization (use release semantics instead of relaxed)
• Fix potential cleanup race condition in advanced_sync example (explicit close before remove)

Improved

• Add comprehensive alignment documentation for data() method (Windows 64KB, POSIX 4KB guarantees)
• Enhance size() method documentation about platform-specific size rounding behavior
• Add no-resize policy documentation with rationale and alternatives
• Improve error messages in basic_writer and basic_reader examples to include operation context and shared memory names

Documentation

• Document Windows 64KB allocation granularity and POSIX 4KB page alignment guarantees
• Explain that actual allocated size may exceed requested size due to page rounding
• Clarify why resizing is not supported (Windows CreateFileMapping limitation)
• Add examples of better error handling patterns with contextual error messages

Release v0.1.2

Changes

• Rename repository from slick_shm to slick-shm (hyphenated naming follows recommended convention)
• Update documentation and build references to use new repository name

Release v0.1.1

Changes

• Fix Linux build enum multiple definition error
• Add CHANGELOG.md
• Add version number cmake message

Release v0.1.0

slick_shm v0.1.0

A modern C++17 header-only, cross-platform shared memory library.

Installation

vcpkg

vcpkg install slick-shm

CMake FetchContent

FetchContent_Declare(
    slick_shm
    GIT_REPOSITORY https://github.com/SlickQuant/slick_shm.git
    GIT_TAG v0.1.0
)
FetchContent_MakeAvailable(slick_shm)
target_link_libraries(your_target PRIVATE slick::shm)

Header-Only

Download the slick_shm-0.1.0-headers.zip from the Assets below, extract it, and copy the slick/ directory to your project's include path.

Platform Support

• ✅ Windows (MSVC 2017+, MinGW)
• ✅ Linux (GCC 7+, Clang 5+)
• ✅ macOS (Apple Clang)

Full Changelog: https://github.com/SlickQuant/slick_shm/commits/v0.1.0