Struct HostResourceLimits 

pub struct HostResourceLimits {
    pub max_processes: u64,
    pub max_open_files: u64,
    pub max_file_size_bytes: u64,
    pub cpu_seconds: Option<u64>,
    pub memory_bytes: u64,
    pub cgroup_memory_bytes: u64,
    pub cgroup_pids_max: u64,
    pub cgroup_cpu_percent: Option<u32>,
    pub cgroup_io_bytes_per_sec: u64,
    pub workdir_max_bytes: u64,
}

Fully-resolved host-process limits for one session: the manifest’s capabilities.resources block with every omitted field replaced by its DEFAULT_*, except the two CPU fields, which stay None when omitted.

Fields

max_processes: u64

RLIMIT_NPROC headroom above the uid’s count at each spawn, applied only to a spawn with no cgroup scope ([NprocBound::Headroom]) and counted in the unit that uid’s kernel enforces against ([uid_task_count]). A spawn that joins a scope is bounded by cgroup_pids_max instead and ignores this field.

max_open_files: u64

RLIMIT_NOFILE hard ceiling.

max_file_size_bytes: u64

RLIMIT_FSIZE hard ceiling, in bytes.

cpu_seconds: Option<u64>

CPU time, in CPU-seconds, at which RLIMIT_CPU sends a spawned subprocess SIGXCPU, with SIGKILL one second later ([cpu_rlimit_slots]). None sets no RLIMIT_CPU: a subprocess keeps the one this process inherited.

memory_bytes: u64

RLIMIT_AS on Linux, RLIMIT_DATA on macOS (which has no RLIMIT_AS), in bytes.

cgroup_memory_bytes: u64

cgroup v2 memory.max, in bytes. Linux only.

cgroup_pids_max: u64

cgroup v2 pids.max. Linux only.

cgroup_cpu_percent: Option<u32>

cgroup v2 cpu.max quota as a percentage of one core. Linux only. None writes no cpu.max, so the scope keeps the kernel’s max.

cgroup_io_bytes_per_sec: u64

cgroup v2 io.max rbps+wbps on the workdir’s backing device. Linux only, best-effort.

workdir_max_bytes: u64

Ceiling on total workdir size, in bytes. Every platform.

Implementations

impl HostResourceLimits

pub fn resolve(declared: Option<&ResourceCapabilities>) -> Self

Resolve a manifest capabilities.resources block, substituting the default for each field the manifest left out (and for the whole block when it is absent). The CPU fields have no default and stay None when left out.

Trait Implementations

impl Clone for HostResourceLimits

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HostResourceLimits

impl Debug for HostResourceLimits

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

Formats the value using the given formatter.

impl Default for HostResourceLimits

fn default() -> Self

Returns the “default value” for a type.

impl Eq for HostResourceLimits

impl PartialEq for HostResourceLimits

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for HostResourceLimits