GenericMemoryMonitorTask Class Reference
[QtBaseModule]

Detailed Description

The GenericMemoryMonitorTask class implements a simple page-fault driven memory monitor task.

The GenericMemoryMonitorTask provides a Qt Extended Server Task. Qt Extended Server Tasks are documented in full in the QtopiaServerApplication class documentation.

The GenericMemoryMonitorTask uses a simple page-fault rate driven algorithm to approximate the memory "pressure" on the device.

The GenericMemoryMonitorTask task exports the following informational value space items.

As polling is used to sample memory usage information from the /c {/proc} filesystem, the GenericMemoryMonitorTask should generally be replaced by system integrators with a more efficient, system specific mechanism.

This class is part of the Qt Extended server and cannot be used by other Qt Extended applications.

Member Function Documentation

MemState GenericMemoryMonitorTask::memoryState () const   [virtual]

Returns the current memory state, ie Critical, Very Low, Low, or Normal.

Reimplemented from MemoryMonitor.

unsigned int GenericMemoryMonitorTask::timeInState () const   [virtual]

Return the time in seconds since the last memory state change.

Reimplemented from MemoryMonitor.