Struct cgroups::freezer::FreezerController

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pub struct FreezerController { /* private fields */ }

Expand description

A controller that allows controlling the freezer subsystem of a Cgroup.

In essence, this subsystem allows the user to freeze and thaw (== “un-freeze”) the processes in the control group. This is done transparently so that neither the parent, nor the children of the processes can observe the freeze.

Note that if the control group is currently in the Frozen or Freezing state, then no processes can be added to it.

Implementations

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impl FreezerController

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pub fn new(oroot: PathBuf) -> Self

Contructs a new FreezerController with oroot serving as the root of the control group.

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pub fn freeze(&self) -> Result<()>

Freezes the processes in the control group.

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pub fn thaw(&self) -> Result<()>

Thaws, that is, unfreezes the processes in the control group.

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pub fn state(&self) -> Result<FreezerState>

Retrieve the state of processes in the control group.

Trait Implementations

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impl Clone for FreezerController

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fn clone(&self) -> FreezerController

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for FreezerController

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

Formats the value using the given formatter. Read more

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impl<'a> From<&'a Subsystem> for &'a FreezerController

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fn from(sub: &'a Subsystem) -> &'a FreezerController

Converts to this type from the input type.

Auto Trait Implementations

impl RefUnwindSafe for FreezerController

impl Send for FreezerController

impl Sync for FreezerController

impl Unpin for FreezerController

impl UnwindSafe for FreezerController

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Controller for Twhere
T: ControllerInternal,

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fn apply(&self, res: &Resources) -> Result<(), Error>

Apply a set of resources to the Controller, invoking its internal functions to pass the kernel the information.

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fn create(&self)

Create this controller

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fn exists(&self) -> bool

Does this controller already exist?

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fn delete(&self)

Delete the controller.

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fn add_task(&self, pid: &CgroupPid) -> Result<(), Error>

Attach a task to this controller.

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fn tasks(&self) -> Vec<CgroupPid, Global>

Get the list of tasks that this controller has.

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fn control_type(&self) -> Controllers

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fn path(&self) -> &Path

The file system path to the controller.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct cgroups::freezer::FreezerController

Implementations

impl FreezerController

pub fn new(oroot: PathBuf) -> Self

pub fn freeze(&self) -> Result<()>

pub fn thaw(&self) -> Result<()>

pub fn state(&self) -> Result<FreezerState>

Trait Implementations

impl Clone for FreezerController

fn clone(&self) -> FreezerController

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

impl Debug for FreezerController

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

impl<'a> From<&'a Subsystem> for &'a FreezerController

fn from(sub: &'a Subsystem) -> &'a FreezerController

Auto Trait Implementations

impl RefUnwindSafe for FreezerController

impl Send for FreezerController

impl Sync for FreezerController

impl Unpin for FreezerController

impl UnwindSafe for FreezerController

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> Controller for Twhere T: ControllerInternal,

fn apply(&self, res: &Resources) -> Result<(), Error>

fn create(&self)

fn exists(&self) -> bool

fn delete(&self)

fn add_task(&self, pid: &CgroupPid) -> Result<(), Error>

fn tasks(&self) -> Vec<CgroupPid, Global>

fn control_type(&self) -> Controllers

fn path(&self) -> &Path

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T> Controller for Twhere
T: ControllerInternal,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,