/**
* Empty a packet on overflow
*
* Empty a packet to resolve overflow by dirtying the appropriate
* cards for each object withing a given packet
*
* @param packet - Reference to packet to be empited
* @param type - ignored for concurrent collector
*
*/
void
MM_ConcurrentOverflow::emptyToOverflow(MM_EnvironmentBase *env, MM_Packet *packet, MM_OverflowType type)
{
MM_ConcurrentGC *collector = (MM_ConcurrentGC *)_extensions->getGlobalCollector();
void *objectPtr;
_overflow = true;
/* Broadcast the overflow to the concurrent collector
* so it can take any remedial action */
collector->concurrentWorkStackOverflow();
_extensions->globalGCStats.workPacketStats.setSTWWorkStackOverflowOccured(true);
_extensions->globalGCStats.workPacketStats.incrementSTWWorkStackOverflowCount();
_extensions->globalGCStats.workPacketStats.setSTWWorkpacketCountAtOverflow(_workPackets->getActivePacketCount());
#if defined(OMR_GC_MODRON_SCAVENGER)
clearCardsForNewSpace(MM_EnvironmentStandard::getEnvironment(env), collector);
#endif /* OMR_GC_MODRON_SCAVENGER */
/* Empty the current packet by dirtying its cards now */
while(NULL != (objectPtr = packet->pop(env))) {
overflowItemInternal(env, objectPtr, collector->getCardTable());
}
Assert_MM_true(packet->isEmpty());
}
void
MM_OverflowStandard::overflowItem(MM_EnvironmentBase *env, void *item, MM_OverflowType type)
{
_overflow = true;
_extensions->globalGCStats.workPacketStats.setSTWWorkStackOverflowOccured(true);
_extensions->globalGCStats.workPacketStats.incrementSTWWorkStackOverflowCount();
_extensions->globalGCStats.workPacketStats.setSTWWorkpacketCountAtOverflow(_workPackets->getActivePacketCount());
overflowItemInternal(env, item);
}
void
MM_OverflowStandard::emptyToOverflow(MM_EnvironmentBase *env, MM_Packet *packet, MM_OverflowType type)
{
void *objectPtr;
_overflow = true;
_extensions->globalGCStats.workPacketStats.setSTWWorkStackOverflowOccured(true);
_extensions->globalGCStats.workPacketStats.incrementSTWWorkStackOverflowCount();
_extensions->globalGCStats.workPacketStats.setSTWWorkpacketCountAtOverflow(_workPackets->getActivePacketCount());
/* Empty the current packet by setting its overflow bit (double marking) */
while(NULL != (objectPtr = packet->pop(env))) {
overflowItemInternal(env, objectPtr);
}
Assert_MM_true(packet->isEmpty());
}
/**
* Overflow an item
*
* Overflow an item by dirtying the appropriate card
*
* @param item - item to overflow
* @param type - ignored for concurrent collector
*
*/
void
MM_ConcurrentOverflow::overflowItem(MM_EnvironmentBase *env, void *item, MM_OverflowType type)
{
MM_ConcurrentGC *collector = (MM_ConcurrentGC *)_extensions->getGlobalCollector();
_overflow = true;
/* Broadcast the overflow to the concurrent collector
* so it can take any remedial action
*/
collector->concurrentWorkStackOverflow();
_extensions->globalGCStats.workPacketStats.setSTWWorkStackOverflowOccured(true);
_extensions->globalGCStats.workPacketStats.incrementSTWWorkStackOverflowCount();
_extensions->globalGCStats.workPacketStats.setSTWWorkpacketCountAtOverflow(_workPackets->getActivePacketCount());
#if defined(OMR_GC_MODRON_SCAVENGER)
clearCardsForNewSpace(MM_EnvironmentStandard::getEnvironment(env), collector);
#endif /* OMR_GC_MODRON_SCAVENGER */
overflowItemInternal(env, item, collector->getCardTable());
}
