zxfoundation::memory::pmm::frame_desc Struct Reference

Compact per-physical-frame metadata record. More...

Public Member Functions
auto	load_flags (std::memory_order mo=std::memory_order::acquire) const noexcept -> u8
	Atomically read flags.
auto	or_flags (u8 bits) noexcept -> void
	Atomically OR bits into flags (used for MCCK ff_offline / ff_suspect).
auto	order () const noexcept -> u8
auto	owner () const noexcept -> frame_owner
auto	set (u8 o, frame_owner ow, u8 numa=0, u8 fl=ff_none) noexcept -> void
	Initialize all fields in one call.
auto	set_order (u8 o) noexcept -> void
auto	set_owner (frame_owner ow) noexcept -> void
auto	store_flags (u8 val, std::memory_order mo=std::memory_order::release) noexcept -> void
	Atomically write flags (used by set() and paths that already hold the zone lock).

Data Fields
u8	_r0 {0}
u16	_r1 {0}
std::atomic< u8 >	flags {0}
u8	numa_node {0}
	NUMA node that owns this frame for free, rollback, and PCP placement.
std::atomic< u32 >	object_generation {0}
	SCOMS generation paired with object_id.
std::atomic< u32 >	object_id {scoms::kobject::KOBJECT_ID_INVALID}
std::atomic< u8 >	order_owner {0}
std::atomic< u16 >	refcount {0}
	Accessed exclusively via __atomic* builtins in pmm.cxxm.

Detailed Description

Compact per-physical-frame metadata record.

Member Function Documentation

set()

auto zxfoundation::memory::pmm::frame_desc::set ( u8 o, frame_owner ow, u8 numa = 0, u8 fl = ff_none )->void

inlineexportnoexcept

Initialize all fields in one call.

Parameters

[in]	o	Buddy order (0–MAX_ORDER).
[in]	ow	Owning subsystem.
[in]	numa	Owning NUMA node for allocator free, rollback, and local-cache policy.
[in]	fl	Initial frame_flags bitmask.

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

• zxfoundation/memory/pmm.zcomponent/types.cxxm