312 _archive_region_map.set_by_address(range, is_archive);
313 }
314
315 bool G1MarkSweep::in_archive_range(oop object) {
316 // This is the out-of-line part of is_archive_object test, done separately
317 // to avoid additional performance impact when the check is not enabled.
318 return _archive_region_map.get_by_address((HeapWord*)object);
319 }
320
321 void G1MarkSweep::prepare_compaction_work(G1PrepareCompactClosure* blk) {
322 G1CollectedHeap* g1h = G1CollectedHeap::heap();
323 g1h->heap_region_iterate(blk);
324 blk->update_sets();
325 }
326
327 void G1PrepareCompactClosure::free_humongous_region(HeapRegion* hr) {
328 HeapWord* end = hr->end();
329 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
330
331 hr->set_containing_set(NULL);
332 _humongous_regions_removed.increment(1u, hr->capacity());
333
334 _g1h->free_humongous_region(hr, &dummy_free_list, false /* par */);
335 prepare_for_compaction(hr, end);
336 dummy_free_list.remove_all();
337 }
338
339 void G1PrepareCompactClosure::prepare_for_compaction(HeapRegion* hr, HeapWord* end) {
340 // If this is the first live region that we came across which we can compact,
341 // initialize the CompactPoint.
342 if (!is_cp_initialized()) {
343 _cp.space = hr;
344 _cp.threshold = hr->initialize_threshold();
345 }
346 prepare_for_compaction_work(&_cp, hr, end);
347 }
348
349 void G1PrepareCompactClosure::prepare_for_compaction_work(CompactPoint* cp,
350 HeapRegion* hr,
351 HeapWord* end) {
352 hr->prepare_for_compaction(cp);
353 // Also clear the part of the card table that will be unused after
354 // compaction.
355 _mrbs->clear(MemRegion(hr->compaction_top(), end));
356 }
357
358 void G1PrepareCompactClosure::update_sets() {
359 // We'll recalculate total used bytes and recreate the free list
360 // at the end of the GC, so no point in updating those values here.
361 HeapRegionSetCount empty_set;
362 _g1h->remove_from_old_sets(empty_set, _humongous_regions_removed);
363 }
364
365 bool G1PrepareCompactClosure::doHeapRegion(HeapRegion* hr) {
366 if (hr->is_humongous()) {
367 oop obj = oop(hr->humongous_start_region()->bottom());
368 if (hr->is_starts_humongous() && obj->is_gc_marked()) {
369 obj->forward_to(obj);
370 }
371 if (!obj->is_gc_marked()) {
372 free_humongous_region(hr);
373 }
374 } else if (!hr->is_pinned()) {
375 prepare_for_compaction(hr, hr->end());
376 }
377 return false;
378 }
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312 _archive_region_map.set_by_address(range, is_archive);
313 }
314
315 bool G1MarkSweep::in_archive_range(oop object) {
316 // This is the out-of-line part of is_archive_object test, done separately
317 // to avoid additional performance impact when the check is not enabled.
318 return _archive_region_map.get_by_address((HeapWord*)object);
319 }
320
321 void G1MarkSweep::prepare_compaction_work(G1PrepareCompactClosure* blk) {
322 G1CollectedHeap* g1h = G1CollectedHeap::heap();
323 g1h->heap_region_iterate(blk);
324 blk->update_sets();
325 }
326
327 void G1PrepareCompactClosure::free_humongous_region(HeapRegion* hr) {
328 HeapWord* end = hr->end();
329 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
330
331 hr->set_containing_set(NULL);
332 _humongous_regions_removed++;
333
334 _g1h->free_humongous_region(hr, &dummy_free_list, false /* par */);
335 prepare_for_compaction(hr, end);
336 dummy_free_list.remove_all();
337 }
338
339 void G1PrepareCompactClosure::prepare_for_compaction(HeapRegion* hr, HeapWord* end) {
340 // If this is the first live region that we came across which we can compact,
341 // initialize the CompactPoint.
342 if (!is_cp_initialized()) {
343 _cp.space = hr;
344 _cp.threshold = hr->initialize_threshold();
345 }
346 prepare_for_compaction_work(&_cp, hr, end);
347 }
348
349 void G1PrepareCompactClosure::prepare_for_compaction_work(CompactPoint* cp,
350 HeapRegion* hr,
351 HeapWord* end) {
352 hr->prepare_for_compaction(cp);
353 // Also clear the part of the card table that will be unused after
354 // compaction.
355 _mrbs->clear(MemRegion(hr->compaction_top(), end));
356 }
357
358 void G1PrepareCompactClosure::update_sets() {
359 // We'll recalculate total used bytes and recreate the free list
360 // at the end of the GC, so no point in updating those values here.
361 _g1h->remove_from_old_sets(0, _humongous_regions_removed);
362 }
363
364 bool G1PrepareCompactClosure::doHeapRegion(HeapRegion* hr) {
365 if (hr->is_humongous()) {
366 oop obj = oop(hr->humongous_start_region()->bottom());
367 if (hr->is_starts_humongous() && obj->is_gc_marked()) {
368 obj->forward_to(obj);
369 }
370 if (!obj->is_gc_marked()) {
371 free_humongous_region(hr);
372 }
373 } else if (!hr->is_pinned()) {
374 prepare_for_compaction(hr, hr->end());
375 }
376 return false;
377 }
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