Unregister the specified process pid from the performance monitor. After unregistration, to statistics for the pid will be no longer be available unless the pid is re-registered with the performance monitor through calling registerPid. A pid value of zero is translated to the current process id. Return 0 on success or a non-zero value otherwise.
Declared in <balb_performancemonitor.h>
int
unregisterPid(int pid);