Changelog

[2.4.3] - 2024-08-14

  • Update entities package dependencies

[2.4.2] - 2024-05-30

  • Update entities package dependencies

[2.4.1] - 2024-04-26

Changed

  • Release preparation
  • Updated Burst dependency to version 1.8.13

[2.4.0] - 2024-03-22

Changed

  • Release preparation

[2.4.0-pre.5] - 2024-02-13

Changed

  • Updated Burst dependency to version 1.8.12

Fixed

  • Memory leaks in unit tests.
  • Memory leak when using NativeBitArrayUnsafeUtility.ConvertExistingDataToNativeBitArray.
  • Brace parsing in FixedString AppendFormat handles incorrect formatting now

Updated

  • Upgraded Test Framework version to 1.4.3

[2.4.0-pre.2] - 2023-11-28

Changed

  • Updated Burst dependency to 1.8.10
  • Add lightweight spinlock to secure multithread write access to the ChildSafetyHandles in custom allocator framework.

[2.4.0-exp.2] - 2023-11-09

Added

  • DataStreamReader.ReadBytes and DataStreamWriter.WriteBytes now have a variant that takes a Span<byte> as a parameter, making it easier to use these APIs with regular byte[] arrays.

Changed

  • The minimum supported editor version is now 2022.3.11f1

[2.3.0-pre.3] - 2023-10-17

Changed

  • Updated version for release preparation.

[2.3.0-exp.1] - 2023-09-18

Added

  • Added a new GetUnsafeReadOnlyPtr method to DataStreamReader. This can be used as an escape hatch if access to the underlying buffer of the stream reader is required.

Fixed

  • A previous release did not allow unsafeList.RemoveRange(unsafeList.Length, 0) anymore, which could cause failures in many common algorithms. This has been fixed.
  • Made SortJob.SegmentSort, and SortJob.SegmentSortMerge public to allow generic job type registration.
  • UnsafeList.RemoveAtSwapBack could read invalid memory when the last element of the list is removed
  • Data elements in FixedList<T, U> now respect natural alignment for the type T

[2.2.1] - 2023-09-11

Changed

  • Updated Burst dependency to version 1.8.8

Fixed

  • Previously the Sort extension for NativeContainers could access memory out of bounds of the container when an invalid IComparer<T> was implemented for T: Comparers must return three states (<0, 0, >0). Sort will now no longer access invalid memory and when running with collection checks enabled (e.g. always on in Editor) or using UNITY_DOTS_DEBUG in player builds, an additional check at the beginning of the sort will validate the comparer is implemented correctly and inform users otherwise.

Added

  • Added a dependency on the com.unity.test-framework.performance package

[2.2.0] - 2023-06-20

Changed

  • Made SegmentSort and SegmentSortMerge public to allow generic job type registration.

Fixed

  • Previously it was possible to change the length of a NativeList via the Length property setter while the NativeList is being used inside of a job without an InvalidOperationExcpetion being thrown for the unsafe access.

[2.1.4] - 2023-04-25

Removed

  • Dependency on com.unity.test-framework.performance
  • Dependency on com.unity.test-framework

[2.1.1] - 2023-04-12

Added

  • IJobParallelBatch provides .Schedule, .ScheduleByRef, .ScheduleParallel, .ScheduleParallelByRef, .Run and .RunByRef forms. .ScheduleParallel is equivalent to calling .ScheduleBatch.
  • Added Trim, TrimStart, TrimEnd, ToLowerAscii, ToUpperAscii methods to strings.
  • NativeQueue.ReadOnly.
  • UnsafeParallelHashMap.ReadOnly.
  • UnsafeQueue container type
  • Unsafe/NativeParallelMultiHashMap.ReadOnly view into container.
  • UnsafeList.ReadOnly enumerator.

Changed

  • Added additional UNITY_DOTS_DEBUG checks to collection types to help with standalone player debugging (since ENABLE_UNITY_COLLECTION_CHECKS safety checks are unavailable in standalone player builds)
  • Updated Burst version to 1.8.4
  • Reduced the amount of memory allocated by allocating based on the maximum number of worker threads the running platform requires rather than defaulting to using a theoretical upper-bound of 128 worker threads.

Fixed

  • Calling Dispose on uninitialized container will not throw.
  • Properly tracks allocations made from the collections package such that when Unity.Collections.NativeLeakDetectionMode is NativeLeakDetectionMode.Enabled or NativeLeakDetectionMode.EnabledWithStackTrace, native memory leaks will be reported upon domain reload.
  • UnsafeParallelHashSet.ReadOnly was not usable in jobs due to extraneous [NativeContainer] attribute
  • NativeRingQueue.Dispose(JobHandle) allowed scheduling as a race condition
  • Dispose(JobHandle) for many native containers adhere to proper safety system expectations
  • Lowered benchmark memory usage in non-desktop player builds to avoid out-of-memory failures
  • Fixed container types could provide unaligned access to T elements which could violate platform alignment requirements resulting in native exceptions / crashes in player builds. All fixed types like FixedList<T> now provide 8 byte alignment for the FixedList<T> type itself, whereas the elements T remain naturally aligned in the contiguous storage buffer inside FixedList<T>

[2.1.0-pre.18] - 2023-03-21

Added

  • UnsafeParallelHashMap.ParallelWriter.ThreadIndex is a public read-only property to mirror functionality in NativeParallelHashMap
  • NativeParallelHashMap.ParallelWriter.TryAdd that takes a thread index argument for advanced usage
  • UnsafeParallelHashMap.ParallelWriter.TryAdd that takes a thread index argument for advanced usage
  • Starts/EndsWith to Native/UnsafeText and FixedStringN.

Changed

  • NativeReference/NativeList.GetUnsafePtr returns typed pointer T* instead of typeless void*.
  • Updated Burst version in use to 1.8.3
  • Updated auto-generated allocator performance comparison documentation
  • NativeParallelHashMap.ParallelWriter.m_ThreadIndex public property renamed to ThreadIndex
  • Allocator benchmark documentation updated to reflect corrected performance measurements
  • NativeParallelHashMap.ParallelWriter.TryAdd that takes a thread index argument is internal now
  • UnsafeParallelHashMap.ParallelWriter.TryAdd that takes a thread index argument is internal now
  • Significant performance improvements, especially when not burst compiled, across the board in all containers
  • Implementation for NativeRingQueue simplified and performance increased greatly

Removed

  • GenPerformanceComparisonMd
  • InternalsVisibleTo reference to Tiny

Fixed

  • All HashMap and HashSet types are now consistently initialized with a capacity no less than the minGrowth specified
  • Incorrect markdown syntax for header anchors
  • UnsafeAppendBuffer now safely reads and writes type T. Previously, it was possible to make unaligned reads and writes of type T which could violate platform architecture alignment requirements.

[2.1.0-pre.11] - 2023-02-13

Added

  • Ability to resize Unsafe/NativeBitArray with Resize, SetCapacity, TrimExcess methods.
  • .Substring method to FixedStringN, and NativeText.
  • NativeRingQueue.
  • CollectionHelper.Dispose to dispose a NativeArray without Allocator input parameter.

Changed

  • Reviewed all safety checks and made many of them supported with UNITY_DOTS_DEBUG in addition to ENABLE_UNITY_COLLECTIONS_CHECKS
  • Optimize RewindableAllocator.
  • Underlying algorithm for *HashMap/Set containters to improve performance.

Fixed

  • Code generation responsible for early initialization of JobReflectionData could previously emit enormous amounts of code that could dramatically increase IL2CPP build times. We now produce the minimal amount of code necessary and no longer impact IL2CPP compilation times.
  • Removed unnecessary test and documentation samples assemblies from always being loaded in projects.
  • NativeHashSet.ToNativeArray(allocator) now works with custom allocators
  • AllocatorManager.Block.AllocatedBytes and AllocatorManager.Block.Bytes properties could overflow returning incorrect negative values.

[2.1.0-pre.6] - 2022-11-23

Fixed

  • FixedListNBytes.Buffer and FixedString.GetUnsafePtr() could return an invalid pointer in some cases, if the target object was readonly.

[2.1.0-pre.2] - 2022-10-11

Added

  • BinarySearch for NativeArray<T>.ReadOnly
  • NativeArray<T>.CopyFrom containers: NativeList<T>, NativeHashSet<T>, UnsafeHashSet<T>.
  • NativeArray<T>.ArrayEquals containers: NativeList<T>.
  • NativeList<T>.CopyFrom containers: NativeArray<T>, NativeList<T>, UnsafeList<T>.
  • NativeList<T>.ArrayEquals containers: NativeArray<T>, NativeList<T>, UnsafeList<T>.
  • Docs how to create/use/dispose a rewindable allocator.
  • Document how how to define a custom allocator from scratch.
  • CollectionHelper.DisposeNativeArray to dispose native array created from a custom allocator.
  • WriteDouble, WritePackedDouble, WritePackedDoubleDelta to DataStreamWriter
  • ReadDouble, ReadPackedDouble, ReadPackedDoubleDelta to DataStreamReader

Changed

  • Change the default NativeArrayOptions in CollectionHelper.CreateNativeArray to UninitializedMemory.

Removed

  • Move doc allocator.md into allocator folder in Documentation~.

Fixed

  • Don't cache DataStreamWriter.IsLittleEndian, as the cache could not be properly populated if its shared static was not 0-initialized.
  • BinarySearch is using read-only access.
  • Memory leak in Native/UnsafeStream due to orphaned block.
  • Debug visualizers display content even when safety handle is in write-only mode.

[2.1.0-exp.4] - 2022-08-05

Added

  • Native/Unsafe/FixedList.InsertRange with index/count arguments.
  • StreamCompressionModel moved from com.unity.transport
  • DataStreamReader moved from com.unity.transport
  • DataStreamWriter moved from com.unity.transport
  • Job types depending on collections have been moved here
  • Burst compiled delegates for allocators are now cached, which avoids a costly re-compilation
  • DataStreamReader can now be passed to a job
  • DataStreamReader can now be passed to a job.
  • IJobParallelForBatch from com.unity.jobs
  • Unsafe/NativeHashMap/Set suitable for single-threaded use cases.
  • Native/UnsafeHashSet.ReadOnly and Native/UnsafeParallelHashSet.ReadOnly.
  • ConvertExistingDataToNativeArray in CollectionHelper for custom allocators.
  • Native/UnsafeBitArray.ReadOnly.
  • CopyFromTruncated for one FixedStringXXXBytes to another FixedStringYYYBytes
  • New method AddReplicate to NativeList, UnsafeList and all FixedList, which will add a value count times to the list.
  • CollectionHelper.CreateSafetyHandle and CollectionHelper.DisposeSafetyHandle are public APIs now.

Changed

  • Reverted some NativeArray test changes that were introduced in 1.0.0-pre.4
  • T constraint on all containers from struct to unmanaged
  • Add the missing string interpolation operator in two memory exception messages and make the message clearer.
  • Awareness of newly supported nested containers
  • Renamed UnsafeHashSet to UnsafeParallelHashSet.
  • Renamed NativeHashSet to NativeParallelHashSet.
  • Renamed UnsafeHashMap to UnsafeParallelHashMap.
  • Renamed NativeHashMap to NativeParallelHashMap.
  • Renamed UnsafeMultiHashMap to UnsafeParallelMultiHashMap.
  • Renamed NativeMultiHashMap to NativeParallelMultiHashMap.
  • Faster FixedString comparison
  • Reset m_best in RewindableAllocator rewind.
  • IJobParallelForFilter renamed to IJobFilter to better reflect functionality
  • Ensure lazy initialization of IJob types
  • Change Bool type, m_enableBlockFree in RewindableAllocator to Byte type.
  • Change the growth rate of memory block size in RewindableAllocator.
  • FixedList methods AddRange and AddRangeNoResize will no longer append elements if they would exceed capacity.

Fixed

  • Added an assembly definition file for sample code in the package to avoid spurious warnings when adding the package
  • Some AssumePositive assumptions that should have been after some safety checks but weren't.
  • Native/UnsafeList.InsertRangeWithBeginEnd to allow end argument to resize list.
  • Fixed a race condition in the parallel hashmap when using ParallelWriter with hashmaps that operate close to their capacity
  • Update documentation on existing DataStream structs and helper methods.

Removed

  • DisposeSentinel usage in containers.
  • deprecated code untyped UnsafeList, and WordStorage.
  • All deprecated code.
  • Temporary NativeArray placeholder

Deprecated

  • NetworkCompressionModel. New type StreamCompressionModel is no longer IDisposable and all usage of this should use the SharedStatic reference instead.
  • Packed read and write methods that take NetworkCompressionModel as a parameter. New versions taking StreamCompressionModel as an argument should be used instead.
  • UnsafeList.ParallelReader replaced by UnsafeList.ReadOnly.
  • NativeList.AsParallelReader() replaced by NativeList.AsReadOnly().
  • Implicit cast operator from NativeList<T> to NativeArray<T>. Explicit cast method NativeList<T>.AsArray() should be used instead.

[1.4.0] - 2022-07-12

Changed

  • The com.unity.jobs package has been merged into com.unity.collections to resolve circular dependency issues that can occur when using Unity 2022.2+

[1.3.2] - 2022-06-27

  • updated minimum compatible version of Unity to 2020.3.30f1

[1.3.1] - 2022-06-13

  • Minor Fixes to changelog

[1.3.0] - 2022-05-16

Changed

  • Reverted some NativeArray test changes that were introduced in 1.0.0-pre.4

Fixed

  • Added an assembly definition file for sample code in the package to avoid spurious warnings when adding the package

[1.2.3] - 2022-03-18

Changed

  • Minor fixes to changelog

[1.2.3-pre.1] - 2022-03-04

Changed

  • Updated package dependencies

[1.2.2] - 2022-03-03

Changed

  • Updated package com.unity.test-framework to version 1.1.31.
  • Updated package com.unity.burst to version 1.6.4.

[1.2.1] - 2022-02-17

Fixed

  • Shutdown the WordStorage with application exit to ensure memory is freed.
  • NativeList.AsDeferredJobArray allocator label is changed to Allocator.Invalid to infer that the array is in list mode.

Added

  • Added FixedStringMethods.CopyFromTruncated to copy a string to a FixedString explicitly allowing truncation
  • Added NativeText.ReadOnly type which provides a readonly, lightweight copy of a NativeText or UnsafeText type.
  • New public API AllocatorHandle.UnmanagedUnregister, which unregisters an allocator without using managed code.

Changed

  • Native/UnsafeMultiHashMap.GetUniqueKeyArrayNBC extension methods from Unity.Collections.NotBurstCompatible are not necessary anymore. Burst supports tuple. Original methods Native/UnsafeMultiHashMap.GetUniqueKeyArray are now available again.
  • Reverted some NativeArray test changes that were introduced in 1.0.0-pre.4
  • Static safety ID created for all types containing a uniquely represented AtomicSafetyHandle

[1.2.0] - 2022-01-18

Fixed

  • Shutdown the WordStorage with application exit to ensure memory is freed.
  • NativeList.AsDeferredJobArray allocator label is changed to Allocator.Invalid to infer that the array is in list mode.

Added

  • Added FixedStringMethods.CopyFromTruncated to copy a string to a FixedString explicitly allowing truncation
  • Added NativeText.ReadOnly type which provides a readonly, lightweight copy of a NativeText or UnsafeText type.
  • New public API AllocatorHandle.UnmanagedUnregister, which unregisters an allocator without using managed code.

Changed

  • Native/UnsafeMultiHashMap.GetUniqueKeyArrayNBC extension methods from Unity.Collections.NotBurstCompatible are not necessary anymore. Burst supports tuple. Original methods Native/UnsafeMultiHashMap.GetUniqueKeyArray are now available again.
  • Reverted some NativeArray test changes that were introduced in 1.0.0-pre.4
  • Static safety ID created for all types containing a uniquely represented AtomicSafetyHandle

[1.1.0] - 2021-10-27

Added

  • REMOVE_DISPOSE_SENTINEL ifdefs in all containers for future removal of DisposeSentinel.
  • Bounds check to Fixed/Native/UnsafeList.
  • SetCapacity and TrimExcess to NativeList.
  • A custom allocator wrapper AllocatorHelper to facilitate custom allocator creation and destruction.
  • NativeList<>.ArraysEqual & UnsafeList<>.ArraysEqual
  • UnsafeList.CopyFrom

Changed

  • Only lower 15 bits of an allocator handle version are valid.

Fixed

  • Error in leak detection for NativeList created by RewindableAllocator.
  • Removed pointer caching from Native/UnsafeList.ParallelWriter.
  • AtomicSafetyHandle issue preventing use of foreach iterator in jobs for NativeHashSet, NativeHashMap, and NativeMultiHashMap containers.

[1.0.0-pre.6] - 2021-08-31

Removed

  • VirtualMemoryUtility
  • BaselibErrorState
  • BaselibSourceLocation
  • VMRange
  • DisposeSentinel (managed object) from all Native* containers.

Changed

  • Native container memory allocations align to multiple cacheline size.
  • UnsafeText is marshalable now (doesn't contain generic field UnsafeList).

Fixed

  • AllocatorManager.AllocateBlock no longer ignores alignment when allocating.
  • Redundant and wrong computation of memory allocation alignment.

[1.0.0-pre.5] - 2021-08-20

Changed

  • Renamed FixedListN to FixedListNBytes, for all N, and same for FixedString

Fixed

  • NativeBitArray, NativeQueue, NativeStream, and NativeText will no longer throw an exception when using a custom allocator inside of a job.

[1.0.0-pre.4] - 2021-08-11

Added

  • FixedList* overflow checks when UNITY_DOTS_DEBUG is enabled.
  • Disposed NativeArray related tests and updated some invalidated native array from native list tests to confirm that exceptions are thrown when accessing an object's Length and indexer following its disposal

Changed

  • Updated internal dependencies
  • InvalidArrayAccessFromListJob check in the InvalidatedArrayAccessFromListThrowsInsideJob unit test to expect an ObjectDisposedException due to a change in the type thrown for AtomicSafetyHandle.CheckAndThrow

Fixed

  • Setting UnsafeList.Length will now resize the storage properly.

[1.0.0-pre.3] - 2021-06-29

Added

  • Native/UnsafeList*.RemoveRange* with index/count arguments.
  • Upgraded to burst 1.5.2
  • UnsafeText added.

Changed

  • Burst compatibility tests now treat any explicit uses of [BurstCompatible] on private methods as an error (as opposed to silently ignoring) to avoid giving the impression that private methods are being tested.
  • NativeList<T> generic constraint T is changed from struct to unmanaged to match UnsafeList<T>. User code can be simply fixed by changing struct to unmanaged when using NativeList<T> inside generic container.
  • NativeHashMap.GetBucketData renamed to NativeHashMap.GetUnsafeBucketData
  • Update the package to 1.0.0
  • HeapString renamed to NativeText. NativeText is based on UnsafeText.

Deprecated

  • Generated FixedList[Byte/Int/Float][32/64/128/256/512] are deprecated, and replaced with generics FixedList[32/64/128/256/512]<T>.
  • UnsafeMultiHashMap<TKey, TValue>.GetUniqueKeyArray replaced with extension method UnsafeMultiHashMap<TKey, TValue>.GetUniqueKeyValueNBC from Unity.Collections.NotBurstCompatible namespace.
  • NativeMultiHashMap<TKey, TValue>.GetUniqueKeyArray replaced with extension method NativeMultiHashMap<TKey, TValue>.GetUniqueKeyValueNBC from Unity.Collections.NotBurstCompatible namespace.
  • NativeList<T>.ToArray replaced with extension method NativeList<T>.ToArrayNBC from Unity.Collections.NotBurstCompatible
  • NativeList<T>.CopyFrom replaced with extension method NativeList<T>.CopyFromNBC from Unity.Collections.NotBurstCompatible namespace.
  • UnsafeAppendBuffer.Add replaced with extension methodUnsafeAppendBuffer.AddNBC from Unity.Collections.LowLevel.Unsafe.NotBurstCompatible namespace.
  • UnsafeAppendBuffer.ToBytes replaced with extension method UnsafeAppendBuffer.ToBytesNBC from Unity.Collections.LowLevel.Unsafe.NotBurstCompatible namespace.
  • UnsafeAppendBuffer.Reader.ReadNext replaced with extension method UnsafeAppendBuffer.Reader.ReadNextNBC from Unity.Collections.LowLevel.Unsafe.NotBurstCompatible namespace.
  • Native/UnsafeList*.RemoveRange*WithBeginEnd methods with begin/end arguments in favor of Native/UnsafeList*.RemoveRange* with index/count arguments.
  • UnsafeList and replaced it with UnsafeList<T>.
  • VirtualMemoryUtility.

Removed

  • NativeQueue.PersistentMemoryBlockCount and NativeQueue.MemoryBlockSize are now internal APIs.

Fixed

  • Burst compatibility tests will now ignore any method containing a '$' in the name, which can be generated by the Burst direct call IL post processor.
  • xxHash3 is initialized after assembly load to avoid an exception that could be thrown if xxHash3 is accessed for the first time on a thread other than the main thread.

Security

[0.17.0] - 2021-03-15

Added

  • [NotBurstCompatible] attribute to FixedStringN constructors that use a String argument.
  • [NotBurstCompatible] attribute to NativeQueue constructor.
  • UnsafeList<T>.Create and UnsafeList<T>.Destroy API.
  • BurstCompatibilityTests now has a constructor that accepts multiple assembly names to verify Burst compatibility. This allows one test to verify multiple assemblies and can dramatically reduce CI times by avoiding costly setup overhead.
  • UnsafePtrList<T> to replace deprecated untyped UnsafePtrList.
  • Burst compatibility tests now also write the generated code to the Temp directory in order to make it easier to inspect.
  • FixedList*.RemoveRange* with index/count arguments.
  • FixedString parsing to type uint

Deprecated

  • untyped UnsafePtrList, and added UnsafePtrList<T> as replacement.
  • FixedList*.RemoveRange*WithBeginEnd methods with begin/end arguments in favor of FixedList*.RemoveRange* with index/count arguments.

Removed

  • Removed single arg FixedString*.Format extension methods, use Clear() followed by Append().
  • CollectionsBurstTests has been removed and placed into the Entities test project.
  • com.unity.test-framework.performance preview package dependency, and moved performance unit tests depending on it into different location.

Fixed

  • *BitArray.Clear when clearing with very short bit arrays.
  • NativeQueue.AsParallelWriter doesn't need to be cached when chaining jobs. Removed unnecessary safety handle that was preventing calling NativeQueue.AsParallelWriter() multiple times when scheduling jobs.

[0.16.0] - 2021-01-26

Deprecated

Removed

  • Removed deprecated FixedListN.IndexOf and SortJob variants

Fixed

  • An ENABLE_UNITY_COLLECTIONS_CHECKS define was misspelled. Now Memory is checked for reasonable byte length when enabled.
  • Many methods that use IJob were marked as [NotBurstCompatible] to reflect their true Burst compatibility.

Changed

  • Updated com.unity.burst to 1.4.4

[0.15.0] - 2020-11-13

Added

  • NativeReference constructor to initialize it with existing value.
  • T[] *HashSet.ToArray() returns an array of all elements in the set.
  • xxHash3 now also has a utility method to hash a struct directly (Previously it was only pointer + size)
  • [BurstCompatible] attribute to FixedList and extensions.
  • [BurstCompatible] attribute to CollectionHelper.
  • [BurstCompatible] attribute to FixedBytesN.
  • [BurstCompatible] attribute to HeapString.
  • [BurstCompatible] attribute to NativeArrayExtensions.
  • [BurstCompatible] attribute to NativeBitArray.
  • [BurstCompatible] attribute to NativeBitArrayUnsafeUtility.
  • [BurstCompatible] attribute to NativeHashMap.
  • [BurstCompatible] attribute to NativeHashMapExtensions.
  • [BurstCompatible] attribute to NativeHashSet.
  • [BurstCompatible] attribute to NativeList.
  • [BurstCompatible] attribute to NativeListUnsafeUtility.
  • [BurstCompatible] attribute to NativeMultiHashMap.
  • [BurstCompatible] attribute to NativeQueue.
  • [BurstCompatible] attribute to NativeReference.
  • [BurstCompatible] attribute to NativeStream.
  • [BurstCompatible] attribute to NativeString.
  • [BurstCompatible] attribute to UTF8ArrayUnsafeUtility.
  • [BurstCompatible] attribute to Unicode and Rune.
  • [BurstCompatible] attribute to NativeStringView.
  • [BurstCompatible] attribute to UnsafeAppendBuffer.
  • [BurstCompatible] attribute to UnsafeAtomicCounter32 and UnsafeAtomicCounter64.
  • [BurstCompatible] attribute to UnsafeHashMap.
  • [BurstCompatible] attribute to UnsafeHashSet.
  • [BurstCompatible] attribute to UnsafeList, UnsafeListExtensions, UnsafePtrList, UnsafePtrListExtensions.
  • [BurstCompatible] attribute to UnsafeRingQueue.
  • [BurstCompatible] attribute to UnsafeScratchAllocator.
  • [BurstCompatible] attribute to UnsafeUtilityExtensions.
  • [BurstCompatible] attribute to VMRange, Baselib_ErrorState, and VirtualMemoryUtility.
  • [BurstCompatible] attribute to xxHash3.

Changed

  • Update burst to 1.4.1.
  • *BitArray Length would previously report backing capacity which is always 64-bit aligned, changed it to report number of bits user requested on allocation. For example, allocating 3 bits will now report Length 3 instead capacity which is always aligned to 64-bits.
  • Update minimum editor version to 2020.1.2f1

Fixed

  • Code generation for indexers in structs with [BurstCompatible] attribute.
  • *BitArray search for empty bits when number of bits is less than 7 and backing storage is fragmented with 0x81 bit pattern.
  • Namespace for *HashSet.ExceptWith/IntersectWith/UnionWith extension methods, so that use of Unity.Collections.LowLevel.Unsafe namespace is not necessary.
  • using FixedList.ToNativeArray with collection checks enabled used to throw a null reference exception.

[0.14.0] - 2020-09-24

Added

  • *UnsafeBitArray.Find with pos/count search range arguments.

Changed

  • UnsafeStream block allocation performance has been improved by ~16% by appending to the start of the per-thread block lists rather than the end.

Removed

  • FixedList*.InsertRange, FixedList*.RemoveRangeSwapBack, FixedList*.RemoveRange, NativeString*, NativeList.RemoveRangeSwapBack, NativeList.RemoveRange, UnsafeList.RemoveRangeSwapBack, UnsafeList.RemoveRange, FixedString*.Format, FixedString*.AppendFrom, NativeHashSet.TryAdd, UnsafeHashSet.TryAdd.
  • [NativeContainerSupportsDeallocateOnJobCompletion] attribute from NativeReference container. It didn't work properly. Users can use Dispose(JobHandle) method instead.

Fixed

  • FixedList<T> Remove and RemoveSwapBack extension methods were modifying copy, fixed by passing this by reference to modify actual container.

[0.13.0] - 2020-08-26

Added

  • Added *BitArray.Find linear search for 0-bit range.
  • Added SortJob extension methods for NativeList, UnsafeList, UnsafeList<T>, and NativeSlice.
  • Added Sort method that accepts custom comparator, and job dependency, to all supported containers.
  • Added BinarySearch extension methods for NativeArray, NativeList, UnsafeList, UnsafeList<T>, and NativeSlice.
  • Added foreach support to UnsafeList<T>.

Changed

  • Sort functions that take an IComparer no longer require the sorted elements to be IComparable
  • Bumped Burst to 1.3.5.

Deprecated

  • Deprecated SortJob with default job dependency argument. Use Sort that require an explicit JobHandle argument. If no dependency is needed, pass a default valued JobHandle.

Removed

  • Removed: UnsafeUtilityEx, Unity.Collections.Experimental*,FixedString*.UTF8LengthInBytes, and *Stream.ComputeItemCount()

Fixed

  • Fixed performance regression of *HashMap.Count() introduced in Collections 0.10.0.

[0.12.0] - 2020-08-04

Added

  • Added Sort method with custom comparer to FixedList* and UnsafeList<T>.
  • Added IsEmpty property and Clear method to INativeList intefrace.
  • Added INativeDisposable interface which provides a mechanism for scheduling release of unmanaged resources.
  • Added InsertRangeWithBeginEnd to NativeList, UnsafeList, UnsafeList<T>, and UnsafePtrList.
  • Added AddRange and AddRangeNoResize to FixedList*.
  • Added properties to BaselibErrorState to check if an operation resulted in success, out of memory, or accessing an invalid address range.
  • Added HeapString type, for arbitrary-length (up to 2GB) heap-allocated strings compatible with the FixedString* methods. Allocating a HeapString requires specifying an allocator and disposing appropriately.

Deprecated

  • Deprecated FixedList* method IndexOf with index and index/count arguments.

Removed

  • Removed: IJobNativeMultiHashMapMergedSharedKeyIndices JobNativeMultiHashMapUniqueHashExtensions IJobNativeMultiHashMapVisitKeyValue JobNativeMultiHashMapVisitKeyValue IJobNativeMultiHashMapVisitKeyMutableValue JobNativeMultiHashMapVisitKeyMutableValue IJobUnsafeMultiHashMapMergedSharedKeyIndices JobUnsafeMultiHashMapUniqueHashExtensions IJobUnsafeMultiHashMapVisitKeyValue JobUnsafeMultiHashMapVisitKeyValue IJobUnsafeMultiHashMapVisitKeyMutableValue JobUnsafeMultiHashMapVisitKeyMutableValue

Fixed

  • Fixed *HashMap.IsEmpty when items are added and removed from *HashMap. IsEmpty previously used allocated count only to report emptiness, but returning not-empty didn't actually meant that *HashMap is not empty.
  • Fixed bug where *HashSet.Enumerator.Current would always return the default value instead of the actual value from the set.
  • Fixed bug with *HashMap/Set.Enumerator returning wrong index and dereferencing out of bounds memory.

[0.11.0] - 2020-07-10

Added

  • Added VirtualMemoryUtility providing low-level virtual memory utility functions backed by baselib.
  • *HashMap and *HashSet now implement IEnumerable<>.
  • ReadArrayElementBoundsChecked and WriteArrayElementBoundsChecked for ease of debugging ReadArrayElement and WriteArrayElement without sacrificing performance by adding bounds checking directly to those functions.
  • Added InsertRangeWithBeginEnd, RemoveRangeSwapBackWithBeginEnd, and RemoveRangeWithBeginEnd to list containers. *WithBeginEnd in name signifies that arguments are begin/end instead of more standard index/count. Once InsertRange, RemoveRangeSwapBack, and RemoveRange are completely deprecated and removed, those methods will be added with correct index/count arguments.
  • Added xxHash3 type to expose 64/128bits hashing API using xxHash3 algorithm (corresponding to the C++ version https://github.com/Cyan4973/xxHash/releases/tag/v0.8.0)

Changed

  • Updated minimum Unity Editor version to 2020.1.0b15 (40d9420e7de8)
  • Bumped burst to 1.3.2 version.
  • Changed *HashSet.Add API to return bool when adding element to set.
  • UnsafeUtilityExtensions is now public.
  • NativeReference methods Equals and GetHashCode will now operate on the value instead of the data pointer.
  • FixedString{32,64,128,512,4096} have been reworked.
    • Functionality is shared via generics as much as possible. The API attempts to follow StringBuilder semantics.
    • Append methods now consistently append.
    • Append variant to append a char was added (appends the char, does not resolve to int overload).
    • Format methods that replaced the contents of the target have been deprecated. Use Clear() followed by Append(). Because FixedStrings start out cleared, in most cases just an Append is sufficient.
    • Format that takes a format string has been renamed to AppendFormat. The static FixedString.Format methods still exist for convenience, and return a FixedString128.
    • It is possible for users to extend the Append family of methods to support appending their own types. See FixedStringAppendMethods.cs for examples of how to declare your own extension methods.

Deprecated

  • Deprecated *HashSet.TryAdd. *HashSet.Add is equivalent.
  • Deprecated NativeString*. The functionality is replaced by FixedString*.
  • Deprecated InsertRange, RemoveRangeSwap, and RemoveRange from list containers, and added InsertRangeWithBeginEnd, RemoveRangeSwapBackWithBeginEnd, and RemoveRangeWithBeginEnd. *WithBeginEnd in name signifies that arguments are begin/end instead of more standard index/count. Once InsertRange, RemoveRangeSwapBack, and RemoveRange are completely deprecated and removed, those methods will be added with correct index/count arguments.

Removed

  • Removed System.Runtime.CompilerServices.Unsafe.dll from package.

Known Issues

  • This version is not compatible with 2020.2.0a17. Please update to the forthcoming alpha.

All containers allocated with Allocator.Temp on the same thread use a shared AtomicSafetyHandle instance. This is problematic when using NativeHashMap, NativeMultiHashMap, NativeHashSet and NativeList together in situations where their secondary safety handle is used. This means that operations that invalidate an enumerator for either of these collections (or the NativeArray returned by NativeList.AsArray) will also invalidate all other previously acquired enumerators. For example, this will throw when safety checks are enabled:

var list = new NativeList<int>(Allocator.Temp);
list.Add(1);

// This array uses the secondary safety handle of the list, which is
// shared between all Allocator.Temp allocations.
var array = list.AsArray();

var list2 = new NativeHashSet<int>(Allocator.Temp);

// This invalidates the secondary safety handle, which is also used
// by the list above.
list2.TryAdd(1);

// This throws an InvalidOperationException because the shared safety
// handle was invalidated.
var x = array[0];

This defect will be addressed in a future release.

[0.10.0] - 2020-05-27

Added

  • Added Native/UnsafeHashSet containers.
  • Added IsEmpty method to *Queue, *HashMap, *MultiHashMap, *List, FixedString. This method should be prefered to Count() > 0 due to simpler checks for empty container.
  • Added a new container NativeReference to hold unmanaged allocation.
  • Added CollectionsTestFixture to enable jobs debugger and verify safety checks are enabled.
  • Added NativeList.CopyFrom(NativeArray<> array)

Changed

  • Updated minimum Unity Editor version to 2020.1.0b9 (9c0aec301c8d)
  • Updated package com.unity.burst to version 1.3.0-preview.12.
  • Made several tests inherit CollectionsTestFixture to prevent crashing when running tests without jobs debugger or safety checks enabled.
  • Added NativeBitArray.AsNativeArray<T> method to reinterpret NativeBitArray as NativeArray of desired type.

Deprecated

  • Deprecated NativeArrayChunked8 and NativeArrayFullSOA from Unity.Collections.Experimental.
  • Deprecated UnsafeUtilityEx.As/AsRef/ArrayElementAsRef. The functionality is available in UnsafeUtility.

Fixed

  • FixedString and FixedList types now display their contents in the Entity Inspector.
  • Fixed NativeHashMap.ParallelWriter.TryAdd race condition.

[0.9.0] - 2020-05-04

Added

  • Added RemoveAt and RemoveRange to List containers in collections. These methods remove elements in list container while preserving order of the list. These methods are slower than Remove*SwapBack methods and users should prefer Remove*SwapBack if they don't care about preserving order inside *List container.
  • Added *BitArray.Copy between two different bit arrays.
  • Added NativeBitArrayUnsafeUtility.ConvertExistingDataToNativeBitArray for assigning view into data as bit array.

Changed

  • Updated package com.unity.burst to version 1.3.0-preview.11

Fixed

  • Moved NativeMultiHashMap.Remove<TValueEQ>(TKey key, TValueEq value) into an extension method and made it Burst compatible
  • Fixed bug in *HashMap.Remove to not throw when removing from empty hash map.

[0.8.0] - 2020-04-24

Added

  • Added Native/UnsafeBitArray.Copy for copying or shifting bits inside array.
  • Added UnsafeAtomicCounter32/64 providing helper interface for atomic counter functionality.
  • Added NativeBitArray providing arbitrary sized bit array functionality with safety mechanism.

Changed

  • Bumped Burst version to improve compile time and fix multiple bugs.

Deprecated

  • Deprecated IJobNativeMultiHashMapMergedSharedKeyIndices, JobNativeMultiHashMapUniqueHashExtensions, IJobNativeMultiHashMapVisitKeyValue, JobNativeMultiHashMapVisitKeyValue, IJobNativeMultiHashMapVisitKeyMutableValue, JobNativeMultiHashMapVisitKeyMutableValue, and introduced NativeHashMap.GetUnsafeBucketData and NativeMultiHashMap.GetUnsafeBucketData to obtain internals to implement deprecated functionality inside user code. If this functionality is used, the best is to copy deprecated code into user code.

Removed

  • Removed expired API class TerminatesProgramAttribute

[0.7.1] - 2020-04-08

Deprecated

  • Deprecated Length property from NativeHashMap, UnsafeHashMap, NativeMultiHashMap, UnsafeMultiHashMap, NativeQueue, and replaced it with Count() to reflect that there is computation being done.

Fixed

  • Fixed an issue where FixedListDebugView<T> only existed for IComparable types, which lead to a crash while debugging other types.
  • Removed code that made NativeStream incompatible with Burst.

[0.7.0] - 2020-03-13

Added

  • Added ability to dispose NativeKeyValueArrays from job (DisposeJob).
  • Added NativeQueue<T>.ToArray to copy a native queue to an array efficiently

Changed

  • Upgraded Burst to fix multiple issues and introduced a native debugging feature.

Deprecated

  • Deprecated Length property from NativeHashMap, UnsafeHashMap, NativeMultiHashMap, UnsafeMultiHashMap, NativeQueue, and replaced it with Count() to reflect that there is computation being done.

Removed

  • Removed expired API CollectionHelper.CeilPow2()
  • Removed expired API CollectionHelper.lzcnt()
  • Removed expired API struct ResizableArray64Byte<T>

Fixed

  • Removed code that made NativeStream incompatible with Burst.

[0.6.0] - 2020-03-03

Added

  • Added ability to dispose UnsafeAppendBuffer from a DisposeJob.
  • Added NativeHashSetExtensions and UnsafeHashSetExtensions for HashSetExtensions in different namespaces.

Changed

  • UnsafeAppendBuffer field Size renamed to Length.
  • Removed [BurstDiscard] from all validation check functions. Validation is present in code compiled with Burst.

Removed

  • Removed expired overloads for NativeStream.ScheduleConstruct without explicit allocators.
  • Removed HashSetExtensions, replaced with NativeHashSetExtensions and UnsafeHashSetExtensions.

Fixed

  • Fixed UnsafeBitArray out-of-bounds access.

[0.5.2] - 2020-02-17

Changed

  • Changed NativeList<T> parallel reader/writer to match functionality of UnsafeList parallel reader/writer.
  • Updated dependencies of this package.

Removed

  • Removed expired API UnsafeUtilityEx.RestrictNoAlias

Fixed

  • Fixed bug in NativeList.CopyFrom.

[0.5.1] - 2020-01-28

Changed

  • Updated dependencies of this package.

[0.5.0] - 2020-01-16

Added

  • Added UnsafeRingQueue<T> providing fixed-size circular buffer functionality.
  • Added missing IDisposable constraint to UnsafeList and UnsafeBitArray.
  • Added ReadNextArray<T> to access a raw array (pointer and length) from an UnsafeAppendBuffer.Reader.
  • Added FixedString types, guaranteed binary-layout identical to NativeString types, which they are intended to replace.
  • Added FixedList<T> generic self-contained List struct
  • Added BitArray.SetBits with arbitrary ulong value.
  • Added BitArray.GetBits to retrieve bits as ulong value.

Changed

  • Changed UnsafeBitArray memory initialization option default to NativeArrayOptions.ClearMemory.
  • Changed FixedList structs to pad to natural alignment of item held in list

Deprecated

  • BlobAssetComputationContext.AssociateBlobAssetWithGameObject(int, GameObject) replaced by its UnityEngine.Object counterpart BlobAssetComputationContext.AssociateBlobAssetWithUnityObject(int, UnityEngine.Object) to allow association of BlobAsset with any kind of UnityEngine.Object derived types.
  • Adding removal dates to the API that have been deprecated but did not have the date set.

Removed

  • Removed IEquatable constraint from UnsafeList<T>.

Fixed

  • Fixed BitArray.SetBits.

[0.4.0] - 2019-12-16

This version requires Unity 2019.3.0f1+

New Features

  • Adding FixedListTN as a non-generic replacement for ResizableArrayN<T>.
  • Added UnsafeBitArray providing arbitrary sized bit array functionality.

Fixes

  • Updated performance package dependency to 1.3.2 which fixes an obsoletion warning
  • Adding [NativeDisableUnsafePtrRestriction] to UnsafeList to allow burst compilation.

[0.3.0] - 2019-12-03

New Features

  • Added fixed-size BitField32 and BitField64 bit array.

Changes

Removed the following deprecated API as announced in/before 0.1.1-preview:

  • Removed struct Concurrent and ToConcurrent() for NativeHashMap, NativeMultiHashMap and NativeQueue (replaced by the ParallelWriter API).
  • From NativeStream.cs: struct NativeStreamReader and struct NativeStreamWriter, replaced by struct NativeStream.Reader and struct NativeStream.Writer.
  • From NativeList.cs: ToDeferredJobArray() (replaced by AsDeferredJobArray() API).

[0.2.0] - 2019-11-22

This version requires Unity 2019.3 0b11+

New Features

  • Added fixed-size UTF-8 NativeString in sizes of 32, 64, 128, 512, and 4096 bytes.
  • Added HPC# functions for float-to-string and string-to-float.
  • Added HPC# functions for int-to-string and string-to-int.
  • Added HPC# functions for UTF16-to-UTF8 and UTF8-to-UTF16.
  • New Native(Multi)HashMap.GetKeyValueArrays that will query keys and values at the same time into parallel arrays.
  • Added UnsafeStream, UnsafeHashMap, and UnsafeMultiHashMap, providing functionality of NativeStream container but without any safety mechanism (intended for advanced users only).
  • Added AddNoResize methods to NativeList. When it's known ahead of time that list won't grow, these methods won't try to resize. Rather exception will be thrown if capacity is insufficient.
  • Added ParallelWriter support for UnsafeList.
  • Added UnsafeList.TrimExcess to set capacity to actual number of elements in the container.
  • Added convenience blittable UnsafeList<T> managed container with unmanaged T constraint.

Changes

  • UnsafeList.Resize now doesn't resize to lower capacity. User must call UnsafeList.SetCapacity to lower capacity of the list. This applies to all other containers based on UnsafeList.
  • Updated dependencies for this package.

Fixes

  • Fixed NativeQueue pool leak.

[0.1.1] - 2019-08-06

Fixes

  • NativeHashMap.Remove(TKey key, TValueEQ value) is now supported in bursted code.
  • Adding deprecated NativeList.ToDeferredJobArray() back in - Use AsDeferredJobArray() instead. The deprecated function will be removed in 3 months. This can not be auto-upgraded prior to Unity 2019.3.
  • Fixing bug where TryDequeue on an empty NativeQueue that previously had enqueued elements could leave it in an invalid state where Enqueue would fail silently afterwards.

Changes

  • Updated dependencies for this package.

[0.1.0] - 2019-07-30

New Features

  • NativeMultiHashMap.Remove(key, value) has been addded. It lets you remove all key & value pairs from the hashmap.
  • Added ability to dispose containers from job (DisposeJob).
  • Added UnsafeList.AddNoResize, and UnsafeList.AddRangeNoResize.
  • BlobString for storing string data in a blob

Upgrade guide

  • Native*.Concurrent is renamed to Native*.ParallelWriter.
  • Native*.ToConcurrent() function is renamed to Native*.AsParallelWriter().
  • NativeStreamReader/Writer structs are subclassed and renamed to NativeStream.Reader/Writer (note: changelot entry added retroactively).

Changes

  • Deprecated ToConcurrent, added AsParallelWriter instead.
  • Allocator is not an optional argument anymore, user must always specify the allocator.
  • Added Allocator to Unsafe*List container, and removed per method allocator argument.
  • Introduced memory intialization (NativeArrayOptions) argument to Unsafe*List constructor and Resize.

Fixes

  • Fixed UnsafeList.RemoveRangeSwapBack when removing elements near the end of UnsafeList.
  • Fixed safety handle use in NativeList.AddRange.

[0.0.9-preview.20] - 2019-05-24

Changes

  • Updated dependencies for Unity.Collections.Tests

[0.0.9-preview.19] - 2019-05-16

New Features

  • JobHandle NativeList.Dispose(JobHandle dependency) allows Disposing the container from a job.
  • Exposed unsafe NativeSortExtension.Sort(T* array, int length) method for simpler sorting of unsafe arrays
  • Imporoved documentation for NativeList
  • Added CollectionHelper.WriteLayout debug utility

Fixes

  • Fixes a NativeQueue alignment issue.

[0.0.9-preview.18] - 2019-05-01

Change tracking started with this version.