void VM_GC_HeapInspection::doit() {
HandleMark hm;
CollectedHeap* ch = Universe::heap();
ch->ensure_parsability(false); // must happen, even if collection does
// not happen (e.g. due to GC_locker)
if (_full_gc) {
// The collection attempt below would be skipped anyway if
// the gc locker is held. The following dump may then be a tad
// misleading to someone expecting only live objects to show
// up in the dump (see CR 6944195). Just issue a suitable warning
// in that case and do not attempt to do a collection.
// The latter is a subtle point, because even a failed attempt
// to GC will, in fact, induce one in the future, which we
// probably want to avoid in this case because the GC that we may
// be about to attempt holds value for us only
// if it happens now and not if it happens in the eventual
// future.
if (GC_locker::is_active()) {
warning("GC locker is held; pre-dump GC was skipped");
} else {
ch->collect_as_vm_thread(GCCause::_heap_inspection);
}
}
HeapInspection::heap_inspection(_out, _need_prologue /* need_prologue */);
}
void VM_GC_ObjectAddressInfoCollection::doit() {
HandleMark hm;
CollectedHeap* ch = Universe::heap();
ch->ensure_parsability(false); // must happen, even if collection does
// not happen (e.g. due to GC_locker)
ObjectAddressInfoCollection::collect_object_address_info(_addrinfo_log,
_krinfo_log, _reason);
}
void VM_GC_ObjectInfoCollection::doit() {
HandleMark hm;
CollectedHeap* ch = Universe::heap();
ch->ensure_parsability(false); // must happen, even if collection does
// not happen (e.g. due to GC_locker)
ObjectInfoCollection::collect_object_info(_objinfo_log, _apinfo_log, _reason);
if (CrashOnObjectInfoDump) {
guarantee(false, "requested crash after object info dump");
}
}
