lib::id_allocator< MaxIds > Class Template Reference

Fixed-capacity SMP-safe ID allocator backed by a bitmap. More...

Public Member Functions
auto	alloc () noexcept -> std::optional< u32 >
	Allocate the lowest available ID.
auto	count () const noexcept -> u32
	Number of currently allocated IDs.
auto	free (u32 id) noexcept -> void
	Free a previously allocated ID.
auto	is_allocated (u32 id) const noexcept -> bool
	Check if an ID is currently allocated.
auto	reserve (u32 n) noexcept -> void
	Reserve IDs [0, n). These will never be returned by alloc().

Static Public Attributes
static constexpr u32	capacity = static_cast<u32>(MaxIds)
	Maximum capacity.

Detailed Description

template<usize MaxIds>
class lib::id_allocator< MaxIds >

Fixed-capacity SMP-safe ID allocator backed by a bitmap.

Template Parameters

MaxIds

Maximum number of IDs (0 to MaxIds-1).

Member Function Documentation

alloc()

template<usize MaxIds>

auto lib::id_allocator< MaxIds >::alloc ( ) ->std::optional< u32 >

inlinenodiscardexportnoexcept

Allocate the lowest available ID.

Returns

The allocated ID, or nullopt if all IDs exhausted.

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The documentation for this class was generated from the following file:

• lib/idalloc.cxxm