/* virtual */ SysStatus
FCMPrimitive<PL,ALLOC>::detachRegion(RegionRef regRef)
{
uval found;
RegionInfo *rinfo;
// check before locking to avoid callback deadlock on destruction
if (this->beingDestroyed) return 0;
this->lock.acquire();
found = this->regionList.remove(regRef, rinfo);
if (!found) {
// assume race on destruction call
tassert(this->beingDestroyed,
err_printf("no region; no destruction race\n"));
this->lock.release();
return 0;
}
if (this->regionList.isEmpty()) {
this->lock.release();
this->notInUse();
} else {
this->lock.release();
updatePM(rinfo->pm);
}
delete rinfo;
return 0;
}
void Oscillator::update( sampleFrame * _ab, const fpp_t _frames,
const ch_cnt_t _chnl )
{
if( m_freq >= Engine::mixer()->processingSampleRate() / 2 )
{
Mixer::clearAudioBuffer( _ab, _frames );
return;
}
if( m_subOsc != NULL )
{
switch( m_modulationAlgoModel->value() )
{
case PhaseModulation:
updatePM( _ab, _frames, _chnl );
break;
case AmplitudeModulation:
updateAM( _ab, _frames, _chnl );
break;
case SignalMix:
updateMix( _ab, _frames, _chnl );
break;
case SynchronizedBySubOsc:
updateSync( _ab, _frames, _chnl );
break;
case FrequencyModulation:
updateFM( _ab, _frames, _chnl );
}
}
else
{
updateNoSub( _ab, _frames, _chnl );
}
}
// Don't destroy FCM when last use disappears. Only destroy
// if FR (file representative) detaches (file is really gone)
// or page replacement removes last page (lazy close).
// FIXME: no locking going on here???
SysStatus
FCMDefault::detachRegion(RegionRef regRef)
{
//err_printf("FCMDefault::detachRegion(%lx) : %lx\n", regRef, getRef());
RegionInfo *rinfo;
PMRef pm;
uval found;
// check before locking to avoid callback on destruction deadlock
if (beingDestroyed) return 0;
lock.acquire();
found = regionList.remove(regRef, rinfo);
if (!found) {
// assume race on destruction call
tassert(beingDestroyed,err_printf("no region; no destruction race\n"));
lock.release();
return 0;
}
pm = rinfo->pm;
delete rinfo;
if (!referenceCount && regionList.isEmpty()) {
//err_printf("FCMDefault::detachRegion(%lx) regionlist empty: %lx\n",
// regRef, getRef());
lock.release();
notInUse();
} else {
lock.release();
}
//err_printf("FCMDefault::detachRegion maybe doing updatePM\n");
// above code may have destroyed us; updatePM info if we still have a pm
if (!beingDestroyed) updatePM(pm);
//err_printf("FCMDefault::detachRegion all done\n");
return 0;
}
