[1.1.0] - 2024-04-01

Added

• Add implementation to support implicit and explicit atomic operations using
  the _Interlocked API
• Implementation has id patomic_id_MSVC, kind patomic_kind_ASM, and
  supports up to 128 bit operations

[1.0.0] - 2024-12-25

Added

• Initial stable API and ABI
• Initial implementation supporting only atomic operations using <stdatomic.h>
  (no transaction operations are supported)
• Complete binary testing except for thread-safety tests

[0.4.0] [Minor] - 2021-12-29

Added

• following config macros for internal use:
  • PATOMIC_HAVE_GNU_SYNC
  • PATOMIC_HAVE_GNU_ATOMIC
  • PATOMIC_HAVE_GNU_SYNC_LOCK_FREE_{N} for N in [1, 2, 4, 8, 16]
  • PATOMIC_HAVE_LONG_LONG_EXTN
  • PATOMIC_HAVE_MS_INT128
  • PATOMIC_HAVE_MS_INT128_EXTN
  • PATOMIC_HAVE_IR_SIGN_MAGNITUDE
  • PATOMIC_HAVE_IR_ONES_COMPL
  • PATOMIC_HAVE_INTRIN_EFLAGS_CPUID
  • PATOMIC_HAVE_CPUID_CPUID
• following macros and corresponding config macros for internal use:
  • PATOMIC_LIKELY
  • PATOMIC_UNLIKELY
  • PATOMIC_SIZEOF_{T} for T in [char, short, int, long, long long, __int128]
• alignment helpers in stdalign.h
• typedefs for char, short, int, and long in stdint.h of the form
  patomic_TYPE_(un)signed
• conditionally existing typedefs for long long and __int128 with the same
  naming scheme
• macros PATOMIC_STDINT_HAVE_LLONG/I128 to check if the conditional typedefs
  are available
• gnu implementation can now fall back to __sync if it's available and
  __atomic isn't
• cpuid helpers in cpuid.h

Changed

• removed do_assert, do_assert_aligned, and do_memcpy parameters from
  wrapped macros; now use overrideable default macros from wrapped/do.h
• patomic_(u)intptr_t now checks for 128bit type before checking for
  (unsigned) long long
• std implementation can now use __extension__ (unsigned) long long if it's
  available (by virtue of the fact that it now uses patomic_llong_(un)signed
  from stdint.h rather than (unsigned) long long directly)
• std implementation now properly does 2s complement checks for neg op
• std implementation now does runtime atomic_is_lock_free checks in
  addition to the compile-time macro checks
• renamed PATOMIC_HAVE_TWOS_COMPL to PATOMIC_HAVE_IR_TWOS_COMPL

[0.3.1] [Patch] - 2021-12-16

Added

• wrapped macro implementations of all ops:
  • fetch.h wraps fetch_op to define op
  • direct.h wraps an atomic operation to define that same operation
  • cmpxchg.h wraps cmpxchg_weak_explicit to define any other operation

Changed

• renamed types/intptr.h to stdlib/stdint.h
• std implementation now uses wrapped macros instead of defining whole
  functions directly

Fixed

• std implementation now also uses ATOMIC_LLONG_IS_LOCK_FREE in the create
  functions to make sure the corresponding functions are defined
• std implementation no longer assumes sizeof(T) will return a power of 2

[0.3.0] [Minor] - 2021-12-11

Added

• patomic_assert and patomic_assert_{always|unreachable} for internal use
• patomic_ versions of string.h functions for internal use
• patomic_assert(_unreachable) supports NDEBUG
• macro NNDEBUG can be defined to override NDEBUG (for patomic variants)
• following macros and corresponding config macros for internal use:
  • PATOMIC_NOINLINE (MS/GNU)
  • PATOMIC_NORETURN (MS/GNU/STD)
  • PATOMIC_RESTRICT (MS/GNU/STD)
  • PATOMIC_FUNC_NAME (MS/GNU/STD)
  • PATOMIC_UNREACHABLE() (MS/GNU)
• patomic_(u)intptr_t type in intptr.h and corresponding config macros
• alignment check functions (patomic_align_meets_{recommended|minimum})
• disabled warning C4710 on msvc in presets (could not inline function)
• std impl ops assert that inputs are not NULL and are suitable aligned

Changed

• replace all uses of assert with patomic_assert* variants
• std impl no longer unconditionally includes any non-freestanding headers

Fixed

• mark all non-static functions and globals which aren't part of the public api
  with PATOMIC_NO_EXPORT
• std impl no longer requires the alignment of _Atomic(T) and T to match
• std impl assertions in non-fetch binary or arithmetic functions now display
  non-fetch function name in assertion errors (instead of fetch name)

Removed

• fake stdatomic (/src/include/patomic/fake/stdatomic.h)

[0.2.2] [Minor] - 2021-12-07

Added

• transaction API (with transaction.h) including:
  • transaction helper types in new transaction.h including flag_t, config_t,
    status_t, and result_t (with appropriate name prefixes), as well as wfb
    (with fallback) variants where necessary
  • patomic_transaction_abort_reason helper function
  • transaction ops types in ops.h with additional ops flag_ops, special_ops,
    and raw_ops
  • transaction_t extras: recommended (recommended limits for transactions)
    and sstring (safe string operations that won't abort the transaction)
  • multiple checks for transaction implementations
• feature check API in feature_check.h
• PATOMIC_MAX_CACHE_LINE_SIZE macro in align.h
• corresponding patomic_cache_line_size function in align.h/align.c
• config macros to check for MS/GNU alignment extensions

Changed

• std implementation now checks for MS/GNU alignment extensions before
  defaulting to using sizeof in place of _Alignof

[0.2.1] [Patch] - 2021-11-27

Added

• HelperFunctionsTest test suite (for version and memory order functions)
• PATOMIC_GNU_INLINE_ALWAYS_INLINE_ATTR config macro

Changed

• patomic_version_* functions no longer marked PATOMIC_FORCE_INLINE
  (if inlining is needed, use the PATOMIC_VERSION_* macros provided)
• PATOMIC_FORCE_INLINE can now use __inline__ instead of inline if
  available

Fixed

• patomic_version.h declarations now wrapped in extern "C" {} in C++
  (caused linker errors when compiling with C++)

[0.2.0] [Minor] - 2021-11-23

Added

• exported version functions corresponding to macros
• function definitions are marked PATOMIC_FORCE_INLINE

Changed

• split memory_order into .h and .c, so helper functions are no
  longer static
• function definitions are marked PATOMIC_FORCE_INLINE

Changed

• moved all feature macros from have_*_.h into new patomic_config.h
• listed new macros in README.md
• updated include paths

Added

• patomic_config.h (with default macro definitions)
• created CompilerFeatureChecks.cmake to check feature macros
• created cmake/in directory for .in files
• added patomic_config.h.in to generate _patomic_config.h
• _patomic_config.h is then included in patomic_config.h

Removed

• all have_*_.h files from src/include/patomic/macros

Added

• Enable IPO (if supported) when config is not Debug
• Link libatomic.so if it exists

Fixed

• gcc build example now works correctly

Changed

• Changed .cmake file case from kebab-case to PascalCase