Enum Resource

#[non_exhaustive]
#[repr(u32)]
pub enum Resource {
    RLIMIT_AS = 9,
    RLIMIT_CORE = 4,
    RLIMIT_CPU = 0,
    RLIMIT_DATA = 2,
    RLIMIT_FSIZE = 1,
    RLIMIT_NOFILE = 7,
    RLIMIT_STACK = 3,
    RLIMIT_LOCKS = 10,
    RLIMIT_MEMLOCK = 8,
    RLIMIT_MSGQUEUE = 12,
    RLIMIT_NICE = 13,
    RLIMIT_NPROC = 6,
    RLIMIT_RSS = 5,
    RLIMIT_RTPRIO = 14,
    RLIMIT_RTTIME = 15,
    RLIMIT_SIGPENDING = 11,
}

Types of process resources.

The Resource enum is platform dependent. Check different platform manuals for more details. Some platform links have been provided for easier reference (non-exhaustive).

• Linux
• FreeBSD
• NetBSD

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

RLIMIT_AS = 9

The maximum amount (in bytes) of virtual memory the process is allowed to map.

RLIMIT_CORE = 4

The largest size (in bytes) core(5) file that may be created.

RLIMIT_CPU = 0

The maximum amount of cpu time (in seconds) to be used by each process.

RLIMIT_DATA = 2

The maximum size (in bytes) of the data segment for a process

RLIMIT_FSIZE = 1

The largest size (in bytes) file that may be created.

RLIMIT_NOFILE = 7

The maximum number of open files for this process.

RLIMIT_STACK = 3

The maximum size (in bytes) of the stack segment for a process.

RLIMIT_LOCKS = 10

A limit on the combined number of flock locks and fcntl leases that this process may establish.

RLIMIT_MEMLOCK = 8

The maximum size (in bytes) which a process may lock into memory using the mlock(2) system call.

RLIMIT_MSGQUEUE = 12

A limit on the number of bytes that can be allocated for POSIX message queues for the real user ID of the calling process.

RLIMIT_NICE = 13

A ceiling to which the process’s nice value can be raised using setpriority or nice.

RLIMIT_NPROC = 6

The maximum number of simultaneous processes for this user id.

RLIMIT_RSS = 5

When there is memory pressure and swap is available, prioritize eviction of a process’ resident pages beyond this amount (in bytes).

RLIMIT_RTPRIO = 14

A ceiling on the real-time priority that may be set for this process using sched_setscheduler and sched_set‐ param.

RLIMIT_RTTIME = 15

A limit (in microseconds) on the amount of CPU time that a process scheduled under a real-time scheduling policy may con‐ sume without making a blocking system call.

RLIMIT_SIGPENDING = 11

A limit on the number of signals that may be queued for the real user ID of the calling process.

Trait Implementations

impl Clone for Resource

fn clone(&self) -> Resource

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Resource

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

Formats the value using the given formatter.

impl Hash for Resource

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Resource

fn cmp(&self, other: &Resource) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Resource

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Resource

fn partial_cmp(&self, other: &Resource) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Resource

impl Eq for Resource

impl StructuralPartialEq for Resource