SharpPack 1.1.0

SharpPack 1.1.0 restores MemoryPack-compatible raw-copy semantics for unmanaged structs and removes the short-lived formatter-aware ABI contracts introduced in 1.0.3.

Upgrade SharpPack.Core and SharpPack.Generator together and perform a full rebuild. Assemblies generated by 1.0.3 are not binary-compatible with a runtime-only 1.1.0 replacement.

Retained fixes include validating truncated unmanaged-list payloads before mutating caller-owned lists and preserving modifiers and constraints for nested generated models. Exact-size serialization, configurable retained buffers, Context formatter binding, collectible ALC support, and MemoryPack wire compatibility remain intact.

The published ARM64 benchmark matches MemoryPack 1.21.4 for unmanaged byte-array serialization and round-trip latency; the pre-sized IBufferWriter path is about 6% faster with zero serializer allocation.

Full details are in CHANGELOG.md.

SharpPack 1.0.3

Performance and resource control

• Bound Context-dependent array, list, tuple and generated-object formatters
  once per Context, so steady-state serialization uses the selected formatter
  directly instead of repeatedly walking the formatter graph.
• Added exact-size byte[] serialization for eligible generated object types,
  avoiding the intermediate-buffer-to-result copy while preserving the
  MemoryPack wire format.
• Added configurable retained serializer buffers. The default is an unpinned
  8 KB buffer per active serializer thread, the high-throughput preset is an
  unpinned 80 KB buffer, and applications can choose any size from 1 through
  Array.MaxLength.
• Preserved the zero-allocation serializer hot path for pre-sized
  IBufferWriter<byte> destinations.
• Added reproducible NuGet-only BenchmarkDotNet comparisons against
  MemoryPack 1.21.4, including latency, throughput and allocation results.

Fixes for inherited MemoryPack issues

• Fixed generated unmanaged structs ignoring member-level custom formatters.
  MemoryPack's raw-copy path bypassed [MemoryPackCustomFormatter]; SharpPack
  now honors [SharpPackCustomFormatter] at the root and through arrays,
  lists, nullable values, tuples, key/value pairs, multidimensional arrays,
  closed generic shapes and generated object graphs. Plain unmanaged types
  keep the original raw-copy wire format and performance.
• Fixed truncated unmanaged-list payloads mutating an existing destination
  list before the payload byte count was validated. Both contiguous and
  segmented inputs now fail before changing caller-owned collection state.
• Fixed generated code for nested models losing required containing-type
  modifiers and generic constraints. Nested models inside static,
  readonly, ref and constrained generic partial types now compile with the
  correct containing declarations.

Correctness and compatibility

• Fixed formatter-factory method-name and return-type collisions, recursive
  Context factory construction, helper-name collisions and conditional generic
  policy classification without falling back to process-wide formatter state.
• Fixed nullable unmanaged List<T?> formatter selection and preserved custom
  element formatter composition for explicit array formatters.
• Added validation for custom retained-buffer sizes, exact writer bounds and
  malformed or truncated bulk collection payloads.
• Verified all 203 original-HEAD golden corpus entries in both directions,
  including byte-for-byte equality for deterministic payloads. No wire-format
  change is introduced by this release.

SharpPack 1.0.2

Changelog

1.0.2

• Reduced default-path overhead for small objects while improving large
  serialization throughput.
• Moved generated formatter-override handling into isolated cold paths without
  changing MemoryPack-compatible payloads.
• Reduced optional-state reset work and optimized contiguous reader/writer
  advancement.
• Added regression coverage for context isolation, circular references, pooled
  buffer ownership, generated callbacks, and helper-name collisions.

1.0.1

• Published SharpPack as a public project and prepared the first NuGet.org
  packages.
• Added a complete collectible AssemblyLoadContext host/plugin sample.
• Added reproducible BenchmarkDotNet comparisons against MemoryPack 1.21.4.
• Improved package metadata, descriptions, tags, and repository provenance.

1.0.0

• Renamed the product, assemblies, packages, namespaces, public APIs, source
  generator, streaming APIs, tests, and tooling from MemoryPack to SharpPack.
• Replaced process-wide formatter registration with generic formatter slots and
  context-owned formatter graphs.
• Added collectible AssemblyLoadContext isolation and explicit formatter
  contexts.
• Preserved the original MemoryPack binary wire format and golden payload
  compatibility.
• Added complete generic APIs, zero-copy entry points, stream and pipe support,
  DynamicUnion, circular-reference handling, NativeAOT verification, and
  resource ownership hardening.
• Runtime packages target .NET 10; the Roslyn generator remains
  netstandard2.0.

SharpPack 1.0.1

Changelog

1.0.1

• Published SharpPack as a public project and prepared the first NuGet.org
  packages.
• Added a complete collectible AssemblyLoadContext host/plugin sample.
• Added reproducible BenchmarkDotNet comparisons against MemoryPack 1.21.4.
• Improved package metadata, descriptions, tags, and repository provenance.

1.0.0

• Renamed the product, assemblies, packages, namespaces, public APIs, source
  generator, streaming APIs, tests, and tooling from MemoryPack to SharpPack.
• Replaced process-wide formatter registration with generic formatter slots and
  context-owned formatter graphs.
• Added collectible AssemblyLoadContext isolation and explicit formatter
  contexts.
• Preserved the original MemoryPack binary wire format and golden payload
  compatibility.
• Added complete generic APIs, zero-copy entry points, stream and pipe support,
  DynamicUnion, circular-reference handling, NativeAOT verification, and
  resource ownership hardening.
• Runtime packages target .NET 10; the Roslyn generator remains
  netstandard2.0.

SharpPack 1.0.0

Changelog

1.0.0

• Renamed the product, assemblies, packages, namespaces, public APIs, source
  generator, streaming APIs, tests, and tooling from MemoryPack to SharpPack.
• Replaced process-wide formatter registration with generic formatter slots and
  context-owned formatter graphs.
• Added collectible AssemblyLoadContext isolation and explicit formatter
  contexts.
• Preserved the original MemoryPack binary wire format and golden payload
  compatibility.
• Added complete generic APIs, zero-copy entry points, stream and pipe support,
  DynamicUnion, circular-reference handling, NativeAOT verification, and
  resource ownership hardening.
• Runtime packages target .NET 10; the Roslyn generator remains
  netstandard2.0.