Struct UnsafePtrList

An unmanaged, resizable list, without any thread safety check features.

Namespace: Unity.Collections.LowLevel.Unsafe
Syntax
public struct UnsafePtrList

Constructors

UnsafePtrList(Int32, Allocator, NativeArrayOptions)

Constructs a new list using the specified type of memory allocation.

Declaration
public UnsafePtrList(int initialCapacity, Allocator allocator, NativeArrayOptions options = null)
Parameters
Type Name Description
Int32 initialCapacity
Allocator allocator

A member of the Unity.Collections.Allocator enumeration.
NativeArrayOptions options

Memory should be cleared on allocation or left uninitialized.
Remarks

The list initially has a capacity of one. To avoid reallocating memory for the list, specify sufficient capacity up front.

UnsafePtrList(Void**, Int32)

Constructs list as view into memory.

Declaration
public UnsafePtrList(void **ptr, int length)
Parameters
Type Name Description
Void** ptr
Int32 length

Fields

Allocator

Declaration
public readonly Allocator Allocator
Field Value
Type Description
Allocator

Capacity

Declaration
public readonly int Capacity
Field Value
Type Description
Int32

Length

Declaration
public readonly int Length
Field Value
Type Description
Int32

Ptr

Declaration
public readonly void **Ptr
Field Value
Type Description
Void**

Properties

IsCreated

Reports whether memory for the list is allocated.

Declaration
public bool IsCreated { get; }
Property Value
Type Description
Boolean

True if this list object's internal storage has been allocated.
Remarks

Note that the list storage is not created if you use the default constructor. You must specify at least an allocation type to construct a usable UnsafeList.

Methods

Add(Void*)

Adds an element to the list.

Declaration
public void Add(void *value)
Parameters
Type Name Description
Void* value

The struct to be added at the end of the list.

AddNoResize(Void*)

Adds an element to the list.

Declaration
public void AddNoResize(void *value)
Parameters
Type Name Description
Void* value

The value to be added at the end of the list.
Remarks

If the list has reached its current capacity, internal array won't be resized, and exception will be thrown.

AddRange(UnsafePtrList)

Adds the elements of a UnsafePtrList to this list.

Declaration
public void AddRange(UnsafePtrList list)
Parameters
Type Name Description
UnsafePtrList list

The items to add.

AddRangeNoResize(Void**, Int32)

Adds elements from a buffer to this list.

Declaration
public void AddRangeNoResize(void **ptr, int length)
Parameters
Type Name Description
Void** ptr

A pointer to the buffer.
Int32 length

The number of elements to add to the list.
Remarks

If the list has reached its current capacity, internal array won't be resized, and exception will be thrown.

AddRangeNoResize(UnsafePtrList)

Adds elements from a list to this list.

Declaration
public void AddRangeNoResize(UnsafePtrList list)
Parameters
Type Name Description
UnsafePtrList list
Remarks

If the list has reached its current capacity, internal array won't be resized, and exception will be thrown.

AsParallelReader()

Returns parallel reader instance.

Declaration
public UnsafePtrList.ParallelReader AsParallelReader()
Returns
Type Description
UnsafePtrList.ParallelReader

AsParallelWriter()

Returns parallel writer instance.

Declaration
public UnsafePtrList.ParallelWriter AsParallelWriter()
Returns
Type Description
UnsafePtrList.ParallelWriter

Clear()

Clears the list.

Declaration
public void Clear()
Remarks

List Capacity remains unchanged.

Contains(Void*)

Determines whether an element is in the list.

Declaration
public bool Contains(void *value)
Parameters
Type Name Description
Void* value
Returns
Type Description
Boolean

True, if element is found.

Create(Int32, Allocator, NativeArrayOptions)

Creates a new list with the specified initial capacity and type of memory allocation.

Declaration
public static UnsafePtrList*Create(int initialCapacity, Allocator allocator, NativeArrayOptions options = null)
Parameters
Type Name Description
Int32 initialCapacity

The initial capacity of the list. If the list grows larger than its capacity, the internal array is copied to a new, larger array.
Allocator allocator

A member of the Unity.Collections.Allocator enumeration.
NativeArrayOptions options

Memory should be cleared on allocation or left uninitialized.
Returns
Type Description
UnsafePtrList*

Create(Void**, Int32)

Declaration
public static UnsafePtrList*Create(void **ptr, int length)
Parameters
Type Name Description
Void** ptr
Int32 length
Returns
Type Description
UnsafePtrList*

Destroy(UnsafePtrList*)

Destroys list.

Declaration
public static void Destroy(UnsafePtrList*listData)
Parameters
Type Name Description
UnsafePtrList* listData

Dispose()

Disposes of this container and deallocates its memory immediately.

Declaration
public void Dispose()

Dispose(JobHandle)

Safely disposes of this container and deallocates its memory when the jobs that use it have completed.

Declaration
public JobHandle Dispose(JobHandle inputDeps)
Parameters
Type Name Description
JobHandle inputDeps
Returns
Type Description
JobHandle

A new job handle containing the prior handles as well as the handle for the job that deletes the container.
Remarks

You can call this function dispose of the container immediately after scheduling the job. Pass the JobHandle returned by the Job.Schedule method using the jobHandle parameter so the job scheduler can dispose the container after all jobs using it have run.

IndexOf(Void*)

Searches for the specified element in list.

Declaration
public int IndexOf(void *value)
Parameters
Type Name Description
Void* value
Returns
Type Description
Int32

The zero-based index of the first occurrence element if found, otherwise returns -1.

RemoveAtSwapBack(Int32)

Truncates the list by replacing the item at the specified index with the last item in the list. The list is shortened by one.

Declaration
public void RemoveAtSwapBack(int index)
Parameters
Type Name Description
Int32 index

The index of the item to delete.

RemoveRangeSwapBack(Int32, Int32)

Truncates the list by replacing the item at the specified index range with the items from the end the list. The list is shortened by number of elements in range.

Declaration
public void RemoveRangeSwapBack(int begin, int end)
Parameters
Type Name Description
Int32 begin

The first index of the item to delete.
Int32 end

The last index of the item to delete.

Resize(Int32, NativeArrayOptions)

Changes the list length, resizing if necessary.

Declaration
public void Resize(int length, NativeArrayOptions options = null)
Parameters
Type Name Description
Int32 length

The new length of the list.
NativeArrayOptions options

Memory should be cleared on allocation or left uninitialized.

SetCapacity(Int32)

Set the number of items that can fit in the list.

Declaration
public void SetCapacity(int capacity)
Parameters
Type Name Description
Int32 capacity

The number of items that the list can hold before it resizes its internal storage.

TrimExcess()

Sets the capacity to the actual number of elements in the container.

Declaration
public void TrimExcess()

Extension Methods