static bool discard_clean_frame(const FrObject *obj, va_list args)
{
FrVarArg(uint32_t,thres) ;
FrVarArg(int *,discarded) ;
FrFrame *frame = ((FrSymbol*)obj)->symbolFrame() ;
// throw out the current frame if it is a clean virtual frame last used
// before the threshold value of the clock
if (frame && frame->isVFrame() && !frame->isLocked() &&
!frame->dirtyFrame() && frame->getLRUclock() < thres)
{
frame->discard() ; // discard the frame
(*discarded)++ ;
}
return true ;
}
static bool discard_dirty_frame(const FrObject *obj, va_list args)
{
FrVarArg(uint32_t,thres) ;
FrVarArg(int *,discarded) ;
FrFrame *frame = ((FrSymbol*)obj)->symbolFrame() ;
// throw out any and all unlocked virtual frames, even if dirty, that were
// last used before the threshold value of the clock
if (frame && frame->isVFrame() && !frame->isLocked() &&
frame->getLRUclock() < thres)
{
if (frame->dirtyFrame())
frame->frameName()->commitFrame() ;
frame->discard() ; // discard the frame
(*discarded)++ ;
}
return true ;
}