MemoryPressureHandler Class Reference

#include <MemoryPressureManager.h>

Inheritance diagram for MemoryPressureHandler:

Collaboration diagram for MemoryPressureHandler:

Public Member Functions
virtual const char *	getMemoryPressureDescription ()=0
virtual bool	compact ()=0

Private Attributes
MemoryPressureHandler *	m_pPrevious
MemoryPressureHandler *	m_pNext
size_t	m_Priority
size_t	m_RegistrationSequence
bool	m_bRegistered
bool	m_bRemoving
size_t	m_CallbacksInFlight
const void *	m_pCallbackOwner
WaitQueue	m_CallbackWaiters

Friends
class	MemoryPressureManager

Detailed Description

MemoryPressureHandler: interface for memory pressure handlers.

Definition at line 37 of file MemoryPressureManager.h.

Constructor & Destructor Documentation

MemoryPressureHandler()

MemoryPressureHandler::MemoryPressureHandler

(

)

Definition at line 47 of file MemoryPressureManager.cc.

Member Function Documentation

compact()

virtual bool MemoryPressureHandler::compact ( )

pure virtual

Called by MemoryPressureManager to request this handler to take action to reduce memory pressure.

Returns

true if pages were released, false otherwise.

Implemented in MemoryMapManager, MemoryPressureProcessKiller, MemoryPoolPressureHandler, and SlamRecovery.

Referenced by MemoryPressureManager::compact().

Here is the caller graph for this function:

getMemoryPressureDescription()

virtual const char * MemoryPressureHandler::getMemoryPressureDescription ( )

pure virtual

Returns static storage so describing a recovery action cannot itself allocate memory.

Implemented in MemoryMapManager, MemoryPressureProcessKiller, MemoryPoolPressureHandler, and SlamRecovery.

Referenced by MemoryPressureManager::compact().

Here is the caller graph for this function:

Friends And Related Symbol Documentation

MemoryPressureManager

friend class MemoryPressureManager

friend

Definition at line 56 of file MemoryPressureManager.h.

Member Data Documentation

m_bRegistered

bool MemoryPressureHandler::m_bRegistered

private

Definition at line 62 of file MemoryPressureManager.h.

m_bRemoving

bool MemoryPressureHandler::m_bRemoving

private

Definition at line 63 of file MemoryPressureManager.h.

m_CallbacksInFlight

size_t MemoryPressureHandler::m_CallbacksInFlight

private

Callback lifetime state protected by m_CallbackWaiters' guard.

Definition at line 67 of file MemoryPressureManager.h.

Referenced by MemoryPressureManager::compact(), MemoryPressureManager::registerHandler(), and MemoryPressureManager::removeHandler().

m_CallbackWaiters

WaitQueue MemoryPressureHandler::m_CallbackWaiters

private

Definition at line 69 of file MemoryPressureManager.h.

m_pCallbackOwner

const void* MemoryPressureHandler::m_pCallbackOwner

private

Definition at line 68 of file MemoryPressureManager.h.

m_pNext

MemoryPressureHandler* MemoryPressureHandler::m_pNext

private

Definition at line 59 of file MemoryPressureManager.h.

m_pPrevious

MemoryPressureHandler* MemoryPressureHandler::m_pPrevious

private

Definition at line 58 of file MemoryPressureManager.h.

m_Priority

size_t MemoryPressureHandler::m_Priority

private

Definition at line 60 of file MemoryPressureManager.h.

m_RegistrationSequence

size_t MemoryPressureHandler::m_RegistrationSequence

private

Definition at line 61 of file MemoryPressureManager.h.

---

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

• MemoryPressureManager.h
• MemoryPressureManager.cc