size_t G1MonitoringSupport::eden_space_used() {
size_t young_list_length = g1h()->young_list()->length();
size_t eden_used = young_list_length * HeapRegion::GrainBytes;
size_t survivor_used = survivor_space_used();
eden_used = subtract_up_to_zero(eden_used, survivor_used);
return eden_used;
}
// See the comment near the top of g1MonitoringSupport.hpp for
// an explanation of these calculations for "used" and "capacity".
size_t G1MonitoringSupport::old_space_used() {
size_t used = overall_used();
size_t eden_used = eden_space_used();
size_t survivor_used = survivor_space_used();
used = subtract_up_to_zero(used, eden_used);
used = subtract_up_to_zero(used, survivor_used);
return used;
}
void G1MonitoringSupport::update_counters() {
if (UsePerfData) {
eden_counters()->update_capacity(eden_space_committed());
eden_counters()->update_used(eden_space_used());
to_counters()->update_capacity(survivor_space_committed());
to_counters()->update_used(survivor_space_used());
old_space_counters()->update_capacity(old_space_committed());
old_space_counters()->update_used(old_space_used());
non_young_collection_counters()->update_all();
}
}
size_t G1MonitoringSupport::survivor_space_committed() {
return MAX2(survivor_space_used(),
(size_t) HeapRegion::GrainBytes);
}
size_t used_in_bytes() {
return survivor_space_used(_g1h);
}
