// Write the string space. The string space contains one or multiple GC(G1) regions.
// When the total string space size is smaller than one GC region of the dump time,
// only one string region is used for shared strings.
//
// If the total string space size is bigger than one GC region, there would be more
// than one GC regions allocated for shared strings. The first/bottom GC region might
// be a partial GC region with the empty portion at the higher address within that region.
// The non-empty portion of the first region is written into the archive as one string
// region. The rest are consecutive full GC regions if they exist, which can be written
// out in one chunk as another string region.
void FileMapInfo::write_string_regions(GrowableArray<MemRegion> *regions) {
for (int i = MetaspaceShared::first_string;
i < MetaspaceShared::first_string + MetaspaceShared::max_strings; i++) {
char* start = NULL;
size_t size = 0;
if (regions->is_nonempty()) {
if (i == MetaspaceShared::first_string) {
MemRegion first = regions->first();
start = (char*)first.start();
size = first.byte_size();
} else {
int len = regions->length();
if (len > 1) {
start = (char*)regions->at(1).start();
size = (char*)regions->at(len - 1).end() - start;
}
}
}
write_region(i, start, size, size, false, false);
}
}
void CardTableRS::clear(MemRegion mr) {
for (int i = 0; i < _ct_bs._cur_covered_regions; i++) {
MemRegion mri = mr.intersection(_ct_bs._covered[i]);
if (mri.byte_size() > 0) clear_MemRegion(mri);
}
}
void CountNonCleanMemRegionClosure::do_MemRegion(MemRegion mr) {
if (_g1->is_in_g1_reserved(mr.start())) {
_n += (int) ((mr.byte_size() / CardTableModRefBS::card_size));
if (_start_first == NULL) _start_first = mr.start();
}
}