The following are some of the limitations of the clocks and timers feature supported on the Symbian platform:
The clock and timer
APIs of the Librt library provide the same level of resolution
as that of the Symbian platform APIs, such as RTimer::At(), RTimer::After() and RTimer::HighRes(). Any requests beyond the functionality provided by these APIs will be considered
as invalid.
The Symbian platform
does not support process level clocks and therefore all clock and timer solutions
are based on the clock available to the user level process. The clock has
a clock_id of CLOCK_REALTIME, and can be
retrieved using clock_getcpuclockid() by passing 0 in
the pid_t parameter.
An application or library
that uses the Librt library clock functions must link to librt.dll prior
to all other libraries in the link order. This is because both libc.dll and librt.dll provide
similar clock interfaces but only the Librt library is modified to behave
according to the LSB 3.1 specification.