lxcpp::CGroup Class Reference

#include <cgroup.hpp>

Inheritance diagram for lxcpp::CGroup:

Public Member Functions
	CGroup (const std::string &subsys, const std::string &name)
	Define control-group object. More...
	CGroup (const std::string &subsysAndCgroup)
	Define control-group object (format "subsys:cgroup_path"). More...
bool	exists () const
	Check if cgroup exists. More...
void	create ()
	Create cgroup directory. More...
void	destroy ()
	Destroy cgroup directory Equivalent of: rmdir subsys.path / mName Note: set memory.force_empty before removing a cgroup to avoid moving out-of-use page caches to parent. More...
void	setCommonValue (const std::string &param, const std::string &value)
	Set common 'cgroup' parameter. More...
std::string	getCommonValue (const std::string &param) const
	Get common 'cgroup' paramter. More...
void	setValue (const std::string &param, const std::string &value)
	Set cgroup parameter to value (name validity depends on subsystem). More...
std::string	getValue (const std::string &param) const
	Get cgroup parameter. More...
void	assignGroup (pid_t pid)
	Assign all processes in threadgroup of pid to this cgroup. More...
void	assignPid (pid_t pid)
	Assign single process to this cgroup (will be removed from previous cgroup automatically). More...
std::vector< pid_t >	getPids () const
	Get list of pid assigned to this group. More...

Static Public Member Functions
static CGroup	getCGroup (const std::string &subsys, pid_t pid)
	Get cgroup of process pid in given subsystem. More...

Private Attributes
const Subsystem	mSubsys
const std::string	mName

Constructor & Destructor Documentation

lxcpp::CGroup::CGroup ( const std::string &  subsys, const std::string &  name  )

inline

Define control-group object.

Name can be also considered as path relative to root of subsystem.

lxcpp::CGroup::CGroup

(

const std::string &

subsysAndCgroup

)

Define control-group object (format "subsys:cgroup_path").

Member Function Documentation

void lxcpp::CGroup::assignGroup

(

pid_t

pid

)

Assign all processes in threadgroup of pid to this cgroup.

Equivalent of: echo pid > mSubsys_path/mName/cgroup.procs

void lxcpp::CGroup::assignPid

(

pid_t

pid

)

Assign single process to this cgroup (will be removed from previous cgroup automatically).

Equivalent of: echo pid > mSubsys_path/mName/tasks

void lxcpp::CGroup::create

(

)

Create cgroup directory.

Equivalent of: mkdir subsys.path / mName

void lxcpp::CGroup::destroy

(

)

Destroy cgroup directory Equivalent of: rmdir subsys.path / mName Note: set memory.force_empty before removing a cgroup to avoid moving out-of-use page caches to parent.

bool lxcpp::CGroup::exists

(

)

const

Check if cgroup exists.

Returns

true if cgroup path (subsys.path / mName) exists

CGroup lxcpp::CGroup::getCGroup ( const std::string &  subsys, pid_t  pid  )

static

Get cgroup of process pid in given subsystem.

std::string lxcpp::CGroup::getCommonValue

(

const std::string &

param

)

const

Get common 'cgroup' paramter.

Equivalent of: cat mSubsys_path/mName/cgroup.param

std::vector< pid_t > lxcpp::CGroup::getPids

(

)

const

Get list of pid assigned to this group.

Equivalent of: cat mSubsys_path/mName/tasks

std::string lxcpp::CGroup::getValue

(

const std::string &

param

)

const

Get cgroup parameter.

Equivalent of: cat mSubsys_path/mName/mSubsys_name.param

void lxcpp::CGroup::setCommonValue	(	const std::string &	param,
		const std::string &	value
	)

Set common 'cgroup' parameter.

Equivalent of: echo value > mSubsys_path/mName/cgroup.param

void lxcpp::CGroup::setValue	(	const std::string &	param,
		const std::string &	value
	)

Set cgroup parameter to value (name validity depends on subsystem).

Equivalent of: echo value > mSubsys_path/mName/mSubsys_name.param

Member Data Documentation

const std::string lxcpp::CGroup::mName

private

const Subsystem lxcpp::CGroup::mSubsys

private

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The documentation for this class was generated from the following files:

• libs/lxcpp/cgroups/cgroup.hpp
• libs/lxcpp/cgroups/cgroup.cpp