318 _archive_region_map.set_by_address(range, is_archive);
319 }
320
321 bool G1MarkSweep::in_archive_range(oop object) {
322 // This is the out-of-line part of is_archive_object test, done separately
323 // to avoid additional performance impact when the check is not enabled.
324 return _archive_region_map.get_by_address((HeapWord*)object);
325 }
326
327 void G1MarkSweep::prepare_compaction_work(G1PrepareCompactClosure* blk) {
328 G1CollectedHeap* g1h = G1CollectedHeap::heap();
329 g1h->heap_region_iterate(blk);
330 blk->update_sets();
331 }
332
333 void G1PrepareCompactClosure::free_humongous_region(HeapRegion* hr) {
334 HeapWord* end = hr->end();
335 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
336
337 hr->set_containing_set(NULL);
338 _humongous_regions_removed.increment(1u, hr->capacity());
339
340 _g1h->free_humongous_region(hr, &dummy_free_list, false /* par */);
341 prepare_for_compaction(hr, end);
342 dummy_free_list.remove_all();
343 }
344
345 void G1PrepareCompactClosure::prepare_for_compaction(HeapRegion* hr, HeapWord* end) {
346 // If this is the first live region that we came across which we can compact,
347 // initialize the CompactPoint.
348 if (!is_cp_initialized()) {
349 _cp.space = hr;
350 _cp.threshold = hr->initialize_threshold();
351 }
352 prepare_for_compaction_work(&_cp, hr, end);
353 }
354
355 void G1PrepareCompactClosure::prepare_for_compaction_work(CompactPoint* cp,
356 HeapRegion* hr,
357 HeapWord* end) {
358 hr->prepare_for_compaction(cp);
359 // Also clear the part of the card table that will be unused after
360 // compaction.
361 _mrbs->clear(MemRegion(hr->compaction_top(), end));
362 }
363
364 void G1PrepareCompactClosure::update_sets() {
365 // We'll recalculate total used bytes and recreate the free list
366 // at the end of the GC, so no point in updating those values here.
367 HeapRegionSetCount empty_set;
368 _g1h->remove_from_old_sets(empty_set, _humongous_regions_removed);
369 }
370
371 bool G1PrepareCompactClosure::doHeapRegion(HeapRegion* hr) {
372 if (hr->is_humongous()) {
373 oop obj = oop(hr->humongous_start_region()->bottom());
374 if (hr->is_starts_humongous() && obj->is_gc_marked()) {
375 obj->forward_to(obj);
376 }
377 if (!obj->is_gc_marked()) {
378 free_humongous_region(hr);
379 }
380 } else if (!hr->is_pinned()) {
381 prepare_for_compaction(hr, hr->end());
382 }
383 return false;
384 }
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318 _archive_region_map.set_by_address(range, is_archive);
319 }
320
321 bool G1MarkSweep::in_archive_range(oop object) {
322 // This is the out-of-line part of is_archive_object test, done separately
323 // to avoid additional performance impact when the check is not enabled.
324 return _archive_region_map.get_by_address((HeapWord*)object);
325 }
326
327 void G1MarkSweep::prepare_compaction_work(G1PrepareCompactClosure* blk) {
328 G1CollectedHeap* g1h = G1CollectedHeap::heap();
329 g1h->heap_region_iterate(blk);
330 blk->update_sets();
331 }
332
333 void G1PrepareCompactClosure::free_humongous_region(HeapRegion* hr) {
334 HeapWord* end = hr->end();
335 FreeRegionList dummy_free_list("Dummy Free List for G1MarkSweep");
336
337 hr->set_containing_set(NULL);
338 _humongous_regions_removed++;
339
340 _g1h->free_humongous_region(hr, &dummy_free_list, false /* par */);
341 prepare_for_compaction(hr, end);
342 dummy_free_list.remove_all();
343 }
344
345 void G1PrepareCompactClosure::prepare_for_compaction(HeapRegion* hr, HeapWord* end) {
346 // If this is the first live region that we came across which we can compact,
347 // initialize the CompactPoint.
348 if (!is_cp_initialized()) {
349 _cp.space = hr;
350 _cp.threshold = hr->initialize_threshold();
351 }
352 prepare_for_compaction_work(&_cp, hr, end);
353 }
354
355 void G1PrepareCompactClosure::prepare_for_compaction_work(CompactPoint* cp,
356 HeapRegion* hr,
357 HeapWord* end) {
358 hr->prepare_for_compaction(cp);
359 // Also clear the part of the card table that will be unused after
360 // compaction.
361 _mrbs->clear(MemRegion(hr->compaction_top(), end));
362 }
363
364 void G1PrepareCompactClosure::update_sets() {
365 // We'll recalculate total used bytes and recreate the free list
366 // at the end of the GC, so no point in updating those values here.
367 _g1h->remove_from_old_sets(0, _humongous_regions_removed);
368 }
369
370 bool G1PrepareCompactClosure::doHeapRegion(HeapRegion* hr) {
371 if (hr->is_humongous()) {
372 oop obj = oop(hr->humongous_start_region()->bottom());
373 if (hr->is_starts_humongous() && obj->is_gc_marked()) {
374 obj->forward_to(obj);
375 }
376 if (!obj->is_gc_marked()) {
377 free_humongous_region(hr);
378 }
379 } else if (!hr->is_pinned()) {
380 prepare_for_compaction(hr, hr->end());
381 }
382 return false;
383 }
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