#include <PosixSubsystem.h>

Collaboration diagram for ProcessGroupManager:

Public Member Functions
size_t	allocateGroupId ()

void	setGroupId (size_t gid)

bool	isGroupIdValid (size_t gid) const

void	returnGroupId (size_t gid)

void	registerGroup (size_t gid, ProcessGroup *group)

void	unregisterGroup (size_t gid, ProcessGroup *group)

ProcessGroup *	findGroup (size_t gid) const

ProcessGroup *	findGroup (size_t gid, const UserspacePidNamespace *space) const

Spinlock &	lock ()

Static Public Member Functions
static ProcessGroupManager &	instance ()

Private Attributes
ExtensibleBitmap	m_GroupIds

ProcessGroup *	m_Groups

Spinlock	m_GroupLock

Static Private Attributes
static ProcessGroupManager	m_Instance

Detailed Description

Process group ID control.

Definition at line 132 of file PosixSubsystem.h.

Constructor & Destructor Documentation

◆ ProcessGroupManager()

ProcessGroupManager::ProcessGroupManager ( )

Definition at line 182 of file PosixSubsystem.cc.

◆ ~ProcessGroupManager()

ProcessGroupManager::~ProcessGroupManager ( )

virtual

Definition at line 186 of file PosixSubsystem.cc.

Member Function Documentation

◆ allocateGroupId()

size_t ProcessGroupManager::allocateGroupId ( )

Allocates a new process group ID, that hasn't yet been used.

Definition at line 188 of file PosixSubsystem.cc.

◆ findGroup() [1/2]

ProcessGroup * ProcessGroupManager::findGroup ( size_t gid ) const

Caller must retain lock() while using the returned pointer.

Definition at line 237 of file PosixSubsystem.cc.

◆ findGroup() [2/2]

ProcessGroup * ProcessGroupManager::findGroup	(	size_t	gid,
		const UserspacePidNamespace *	space
	)		const

Definition at line 244 of file PosixSubsystem.cc.

◆ instance()

static ProcessGroupManager & ProcessGroupManager::instance ( )

inlinestatic

Definition at line 137 of file PosixSubsystem.h.

◆ isGroupIdValid()

bool ProcessGroupManager::isGroupIdValid ( size_t gid ) const

Checks whether the given process group ID is used or not.

Definition at line 207 of file PosixSubsystem.cc.

◆ lock()

Spinlock & ProcessGroupManager::lock ( )

inline

Serialises process-group pointers, membership lists, and destruction.

Definition at line 162 of file PosixSubsystem.h.

◆ registerGroup()

void ProcessGroupManager::registerGroup	(	size_t	gid,
		ProcessGroup *	group
	)

Installs/removes the concrete group behind a reserved ID.

Definition at line 217 of file PosixSubsystem.cc.

◆ returnGroupId()

void ProcessGroupManager::returnGroupId ( size_t gid )

Returns the given process group ID to the available pool.

Definition at line 212 of file PosixSubsystem.cc.

◆ setGroupId()

void ProcessGroupManager::setGroupId ( size_t gid )

Forcibly set the given group ID as taken.

Definition at line 197 of file PosixSubsystem.cc.

◆ unregisterGroup()

void ProcessGroupManager::unregisterGroup	(	size_t	gid,
		ProcessGroup *	group
	)

Definition at line 225 of file PosixSubsystem.cc.

Member Data Documentation

◆ m_GroupIds

ExtensibleBitmap ProcessGroupManager::m_GroupIds

private

Bitmap of available group IDs.

Definition at line 171 of file PosixSubsystem.h.

◆ m_GroupLock

Spinlock ProcessGroupManager::m_GroupLock

mutableprivate

Definition at line 174 of file PosixSubsystem.h.

◆ m_Groups

ProcessGroup* ProcessGroupManager::m_Groups

private

Definition at line 172 of file PosixSubsystem.h.

◆ m_Instance

ProcessGroupManager ProcessGroupManager::m_Instance

staticprivate

Definition at line 167 of file PosixSubsystem.h.

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

Public Member Functions

Static Public Member Functions

Private Attributes

Static Private Attributes