Mercurial > hg > truffle

comparison src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp @ 20337:1f1d373cd044

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8038423: G1: Decommit memory within heap Summary: Allow G1 to decommit memory of arbitrary regions within the heap and their associated auxiliary data structures card table, BOT, hot card cache, and mark bitmaps. Reviewed-by: mgerdin, brutisso, jwilhelm
author tschatzl
date Thu, 21 Aug 2014 11:47:10 +0200
parents eec72fa4b108
children 833b0f92429a a8ea2f110d87
comparison
equal deleted inserted replaced
20336:6701abbc4441 20337:1f1d373cd044
370 _max_regions = max_num_regions; 370 _max_regions = max_num_regions;
371 _cache = Padded2DArray<int, mtGC>::create_unfreeable(n_par_rs, 371 _cache = Padded2DArray<int, mtGC>::create_unfreeable(n_par_rs,
372 _max_regions, 372 _max_regions,
373 &_static_mem_size); 373 &_static_mem_size);
374 374
375 for (uint i = 0; i < n_par_rs; i++) { 375 invalidate(0, _max_regions);
376 for (uint j = 0; j < _max_regions; j++) { 376 }
377 set(i, j, InvalidCard); 377
378 } 378 void FromCardCache::invalidate(uint start_idx, size_t new_num_regions) {
379 } 379 guarantee((size_t)start_idx + new_num_regions <= max_uintx,
380 } 380 err_msg("Trying to invalidate beyond maximum region, from %u size "SIZE_FORMAT,
381 381 start_idx, new_num_regions));
382 void FromCardCache::shrink(uint new_num_regions) {
383 for (uint i = 0; i < HeapRegionRemSet::num_par_rem_sets(); i++) { 382 for (uint i = 0; i < HeapRegionRemSet::num_par_rem_sets(); i++) {
384 assert(new_num_regions <= _max_regions, "Must be within max."); 383 uint end_idx = (start_idx + (uint)new_num_regions);
385 for (uint j = new_num_regions; j < _max_regions; j++) { 384 assert(end_idx <= _max_regions, "Must be within max.");
385 for (uint j = start_idx; j < end_idx; j++) {
386 set(i, j, InvalidCard); 386 set(i, j, InvalidCard);
387 } 387 }
388 } 388 }
389 } 389 }
390 390
404 for (uint i = 0; i < num_par_remsets; i++) { 404 for (uint i = 0; i < num_par_remsets; i++) {
405 set(i, region_idx, InvalidCard); 405 set(i, region_idx, InvalidCard);
406 } 406 }
407 } 407 }
408 408
409 void OtherRegionsTable::init_from_card_cache(uint max_regions) { 409 void OtherRegionsTable::initialize(uint max_regions) {
410 FromCardCache::initialize(HeapRegionRemSet::num_par_rem_sets(), max_regions); 410 FromCardCache::initialize(HeapRegionRemSet::num_par_rem_sets(), max_regions);
411 } 411 }
412 412
413 void OtherRegionsTable::shrink_from_card_cache(uint new_num_regions) { 413 void OtherRegionsTable::invalidate(uint start_idx, size_t num_regions) {
414 FromCardCache::shrink(new_num_regions); 414 FromCardCache::invalidate(start_idx, num_regions);
415 } 415 }
416 416
417 void OtherRegionsTable::print_from_card_cache() { 417 void OtherRegionsTable::print_from_card_cache() {
418 FromCardCache::print(); 418 FromCardCache::print();
419 } 419 }
837 } 837 }
838 838
839 HeapRegionRemSet::HeapRegionRemSet(G1BlockOffsetSharedArray* bosa, 839 HeapRegionRemSet::HeapRegionRemSet(G1BlockOffsetSharedArray* bosa,
840 HeapRegion* hr) 840 HeapRegion* hr)
841 : _bosa(bosa), 841 : _bosa(bosa),
842 _m(Mutex::leaf, FormatBuffer<128>("HeapRegionRemSet lock #"UINT32_FORMAT, hr->hrs_index()), true), 842 _m(Mutex::leaf, FormatBuffer<128>("HeapRegionRemSet lock #%u", hr->hrs_index()), true),
843 _code_roots(), _other_regions(hr, &_m) { 843 _code_roots(), _other_regions(hr, &_m), _iter_state(Unclaimed), _iter_claimed(0) {
844 reset_for_par_iteration(); 844 reset_for_par_iteration();
845 } 845 }
846 846
847 void HeapRegionRemSet::setup_remset_size() { 847 void HeapRegionRemSet::setup_remset_size() {
848 // Setup sparse and fine-grain tables sizes. 848 // Setup sparse and fine-grain tables sizes.