Struct CgroupMemoryController 

pub struct CgroupMemoryController {
    pub limit_hard: u64,
    pub limit_soft: u64,
    pub usage_current: u64,
    pub usage_peak: u64,
    pub stat: MemoryStat,
    pub oom: OomEvent,
    pub parent_id: u64,
    pub cgroup_id: u64,
}

Cgroup memory controller.

Fields

limit_hard: u64

Hard memory limit in bytes (0 = unlimited).

limit_soft: u64

Soft memory limit in bytes (0 = unlimited).

usage_current: u64

Current usage in bytes.

usage_peak: u64

Peak (maximum) usage in bytes.

stat: MemoryStat

Detailed memory statistics.

oom: OomEvent

OOM event state.

parent_id: u64

Parent cgroup ID for hierarchical accounting (0 = root).

cgroup_id: u64

Unique cgroup ID.

Implementations

impl CgroupMemoryController

pub fn new(cgroup_id: u64) -> Self

pub fn set_hard_limit(&mut self, limit: u64) -> Result<(), KernelError>

Set the hard limit. Returns error if current usage exceeds new limit.

pub fn set_soft_limit(&mut self, limit: u64)

Set the soft limit.

pub fn charge(&mut self, bytes: u64) -> Result<(), KernelError>

Charge memory usage. Returns error if hard limit would be exceeded.

pub fn uncharge(&mut self, bytes: u64)

Uncharge (release) memory usage.

pub fn soft_limit_exceeded(&self) -> bool

Check if soft limit is exceeded (triggers reclaim pressure).

pub fn add_cache(&mut self, bytes: u64)

Record a cache page addition.

pub fn add_mapped_file(&mut self, bytes: u64)

Record a mapped file addition.

pub fn hierarchical_usage(&self) -> u64

Hierarchical usage including parent chain (simplified: just self).

Trait Implementations

impl Clone for CgroupMemoryController

fn clone(&self) -> CgroupMemoryController

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CgroupMemoryController

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.