space_bitmap.cc revision 22d5e735f403c57525fe868304c7123f0ce66399
1b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier/* 2b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * Copyright (C) 2008 The Android Open Source Project 3b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * 4b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * Licensed under the Apache License, Version 2.0 (the "License"); 5b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * you may not use this file except in compliance with the License. 6b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * You may obtain a copy of the License at 7b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * 8b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * http://www.apache.org/licenses/LICENSE-2.0 9b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * 10b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * Unless required by applicable law or agreed to in writing, software 11b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * distributed under the License is distributed on an "AS IS" BASIS, 12b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * See the License for the specific language governing permissions and 14b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier * limitations under the License. 15b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier */ 16b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 172dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "space_bitmap-inl.h" 18b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 1922d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "base/stringprintf.h" 2022d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mem_map.h" 2122d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mirror/object-inl.h" 2222d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mirror/class.h" 2322d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mirror/art_field.h" 2422d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mirror/object_array.h" 2522d5e735f403c57525fe868304c7123f0ce66399Ian Rogers 26b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartiernamespace art { 271d54e73444e017d3a65234e0f193846f3e27472bIan Rogersnamespace gc { 281d54e73444e017d3a65234e0f193846f3e27472bIan Rogersnamespace accounting { 29b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 30a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 3173d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartiersize_t SpaceBitmap<kAlignment>::ComputeBitmapSize(uint64_t capacity) { 3273d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier const uint64_t kBytesCoveredPerWord = kAlignment * kBitsPerWord; 3373d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier return (RoundUp(capacity, kBytesCoveredPerWord) / kBytesCoveredPerWord) * kWordSize; 3473d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier} 3573d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier 3673d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartiertemplate<size_t kAlignment> 37a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu ChartierSpaceBitmap<kAlignment>* SpaceBitmap<kAlignment>::CreateFromMemMap( 38a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier const std::string& name, MemMap* mem_map, byte* heap_begin, size_t heap_capacity) { 3931e8925781c2302f1d1a9b39e216ba415bfe0d7eMathieu Chartier CHECK(mem_map != nullptr); 40cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword* bitmap_begin = reinterpret_cast<uword*>(mem_map->Begin()); 4173d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier const size_t bitmap_size = ComputeBitmapSize(heap_capacity); 4231e8925781c2302f1d1a9b39e216ba415bfe0d7eMathieu Chartier return new SpaceBitmap(name, mem_map, bitmap_begin, bitmap_size, heap_begin); 4331e8925781c2302f1d1a9b39e216ba415bfe0d7eMathieu Chartier} 4431e8925781c2302f1d1a9b39e216ba415bfe0d7eMathieu Chartier 45a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 46bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu ChartierSpaceBitmap<kAlignment>::SpaceBitmap(const std::string& name, MemMap* mem_map, uword* bitmap_begin, 47bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier size_t bitmap_size, const void* heap_begin) 48bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier : mem_map_(mem_map), bitmap_begin_(bitmap_begin), bitmap_size_(bitmap_size), 49bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier heap_begin_(reinterpret_cast<uintptr_t>(heap_begin)), 50bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier name_(name) { 51bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier CHECK(bitmap_begin_ != nullptr); 52bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier CHECK_NE(bitmap_size, 0U); 53bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier} 54bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier 55bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartiertemplate<size_t kAlignment> 5622d5e735f403c57525fe868304c7123f0ce66399Ian RogersSpaceBitmap<kAlignment>::~SpaceBitmap() {} 5722d5e735f403c57525fe868304c7123f0ce66399Ian Rogers 5822d5e735f403c57525fe868304c7123f0ce66399Ian Rogerstemplate<size_t kAlignment> 59a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu ChartierSpaceBitmap<kAlignment>* SpaceBitmap<kAlignment>::Create( 60a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier const std::string& name, byte* heap_begin, size_t heap_capacity) { 61b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Round up since heap_capacity is not necessarily a multiple of kAlignment * kBitsPerWord. 6273d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier const size_t bitmap_size = ComputeBitmapSize(heap_capacity); 638d31bbd3d6536de12bc20e3d29cfe03fe848f9daIan Rogers std::string error_msg; 64700a402244a1a423da4f3ba8032459f4b65fa18fIan Rogers std::unique_ptr<MemMap> mem_map(MemMap::MapAnonymous(name.c_str(), nullptr, bitmap_size, 6552e4b43d62896b56f8c2bd041e528472bb4a0d8dMathieu Chartier PROT_READ | PROT_WRITE, false, &error_msg)); 668d31bbd3d6536de12bc20e3d29cfe03fe848f9daIan Rogers if (UNLIKELY(mem_map.get() == nullptr)) { 678d31bbd3d6536de12bc20e3d29cfe03fe848f9daIan Rogers LOG(ERROR) << "Failed to allocate bitmap " << name << ": " << error_msg; 68bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier return nullptr; 69b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 7031e8925781c2302f1d1a9b39e216ba415bfe0d7eMathieu Chartier return CreateFromMemMap(name, mem_map.release(), heap_begin, heap_capacity); 71b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 72b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 73a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 74a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::SetHeapLimit(uintptr_t new_end) { 75dcf8d7283bd51714f3faa55b631ae4103dc98b51Mathieu Chartier DCHECK(IsAligned<kBitsPerWord * kAlignment>(new_end)); 76dcf8d7283bd51714f3faa55b631ae4103dc98b51Mathieu Chartier size_t new_size = OffsetToIndex(new_end - heap_begin_) * kWordSize; 77cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier if (new_size < bitmap_size_) { 78cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier bitmap_size_ = new_size; 79cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier } 80cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier // Not sure if doing this trim is necessary, since nothing past the end of the heap capacity 81cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier // should be marked. 82cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier} 83cc236d74772dda5a4161d9bc5f497fd3d956eb87Mathieu Chartier 84a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 85576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogersstd::string SpaceBitmap<kAlignment>::Dump() const { 86576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogers return StringPrintf("%s: %p-%p", name_.c_str(), reinterpret_cast<void*>(HeapBegin()), 87576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogers reinterpret_cast<void*>(HeapLimit())); 88576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogers} 89576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogers 90576ca0cd692c0b6ae70e776de91015b8ff000a08Ian Rogerstemplate<size_t kAlignment> 91a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::Clear() { 92c5f17732d8144491c642776b6b48c85dfadf4b52Ian Rogers if (bitmap_begin_ != nullptr) { 93c5f17732d8144491c642776b6b48c85dfadf4b52Ian Rogers mem_map_->MadviseDontNeedAndZero(); 94b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 95b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 96b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 97a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 98bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartiervoid SpaceBitmap<kAlignment>::CopyFrom(SpaceBitmap* source_bitmap) { 99357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier DCHECK_EQ(Size(), source_bitmap->Size()); 100357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier std::copy(source_bitmap->Begin(), source_bitmap->Begin() + source_bitmap->Size() / kWordSize, Begin()); 101357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier} 102357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier 103a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 104bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartiervoid SpaceBitmap<kAlignment>::Walk(ObjectCallback* callback, void* arg) { 105b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK(bitmap_begin_ != NULL); 106b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK(callback != NULL); 107357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier 108357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier uintptr_t end = OffsetToIndex(HeapLimit() - heap_begin_ - 1); 109cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword* bitmap_begin = bitmap_begin_; 110b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier for (uintptr_t i = 0; i <= end; ++i) { 111cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword w = bitmap_begin[i]; 112357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier if (w != 0) { 113b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier uintptr_t ptr_base = IndexToOffset(i) + heap_begin_; 114357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier do { 115cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe const size_t shift = CTZ(w); 1162dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* obj = reinterpret_cast<mirror::Object*>(ptr_base + shift * kAlignment); 117b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier (*callback)(obj, arg); 118cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe w ^= (static_cast<uword>(1)) << shift; 119357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier } while (w != 0); 120b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 121b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 122b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 123b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 124a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 125a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::SweepWalk(const SpaceBitmap<kAlignment>& live_bitmap, 126bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier const SpaceBitmap<kAlignment>& mark_bitmap, 127bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier uintptr_t sweep_begin, uintptr_t sweep_end, 128bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier SpaceBitmap::SweepCallback* callback, void* arg) { 129bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier CHECK(live_bitmap.bitmap_begin_ != nullptr); 130bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier CHECK(mark_bitmap.bitmap_begin_ != nullptr); 131b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK_EQ(live_bitmap.heap_begin_, mark_bitmap.heap_begin_); 132b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK_EQ(live_bitmap.bitmap_size_, mark_bitmap.bitmap_size_); 133b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK(callback != NULL); 134b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK_LE(sweep_begin, sweep_end); 135b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier CHECK_GE(sweep_begin, live_bitmap.heap_begin_); 136357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier 137357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier if (sweep_end <= sweep_begin) { 138b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier return; 139b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 140357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier 1412dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers // TODO: rewrite the callbacks to accept a std::vector<mirror::Object*> rather than a mirror::Object**? 142262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe constexpr size_t buffer_size = kWordSize * kBitsPerWord; 143262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe#ifdef __LP64__ 144262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe // Heap-allocate for smaller stack frame. 145262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe std::unique_ptr<mirror::Object*[]> pointer_buf_ptr(new mirror::Object*[buffer_size]); 146262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe mirror::Object** pointer_buf = pointer_buf_ptr.get(); 147262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe#else 148262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe // Stack-allocate buffer as it's small enough. 1492dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* pointer_buf[buffer_size]; 150262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe#endif 1512dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object** pb = &pointer_buf[0]; 152262a0a36ee5f553880365fecf0be1a188526ca69Andreas Gampe 153b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier size_t start = OffsetToIndex(sweep_begin - live_bitmap.heap_begin_); 154357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier size_t end = OffsetToIndex(sweep_end - live_bitmap.heap_begin_ - 1); 155357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier CHECK_LT(end, live_bitmap.Size() / kWordSize); 156cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword* live = live_bitmap.bitmap_begin_; 157cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword* mark = mark_bitmap.bitmap_begin_; 158b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier for (size_t i = start; i <= end; i++) { 159cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword garbage = live[i] & ~mark[i]; 160b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (UNLIKELY(garbage != 0)) { 161b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier uintptr_t ptr_base = IndexToOffset(i) + live_bitmap.heap_begin_; 162357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier do { 163cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe const size_t shift = CTZ(garbage); 164cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe garbage ^= (static_cast<uword>(1)) << shift; 1652dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers *pb++ = reinterpret_cast<mirror::Object*>(ptr_base + shift * kAlignment); 166357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier } while (garbage != 0); 167b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Make sure that there are always enough slots available for an 168b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // entire word of one bits. 169357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier if (pb >= &pointer_buf[buffer_size - kBitsPerWord]) { 170b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier (*callback)(pb - &pointer_buf[0], &pointer_buf[0], arg); 171b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier pb = &pointer_buf[0]; 172b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 173b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 174b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 175b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (pb > &pointer_buf[0]) { 176b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier (*callback)(pb - &pointer_buf[0], &pointer_buf[0], arg); 177b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 178b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 179b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 180a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 181a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::WalkInstanceFields(SpaceBitmap<kAlignment>* visited, 182a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier ObjectCallback* callback, mirror::Object* obj, 183a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier mirror::Class* klass, void* arg) 184b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 185b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Visit fields of parent classes first. 1862dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Class* super = klass->GetSuperClass(); 187b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (super != NULL) { 188b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier WalkInstanceFields(visited, callback, obj, super, arg); 189b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 190b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Walk instance fields 191ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ObjectArray<mirror::ArtField>* fields = klass->GetIFields(); 192b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (fields != NULL) { 193b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier for (int32_t i = 0; i < fields->GetLength(); i++) { 194ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtField* field = fields->Get(i); 19561c5ebc6aee2cac1c363de6fbdac25ada1697fdbMathieu Chartier if (!field->IsPrimitiveType()) { 1962dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* value = field->GetObj(obj); 197b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (value != NULL) { 19861c5ebc6aee2cac1c363de6fbdac25ada1697fdbMathieu Chartier WalkFieldsInOrder(visited, callback, value, arg); 199b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 200b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 201b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 202b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 203b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 204b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 205a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 206a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::WalkFieldsInOrder(SpaceBitmap<kAlignment>* visited, 207bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier ObjectCallback* callback, mirror::Object* obj, 208bbd695c71e0bf518f582e84524e1cdeb3de3896cMathieu Chartier void* arg) { 209b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (visited->Test(obj)) { 210b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier return; 211b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 212b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // visit the object itself 213b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier (*callback)(obj, arg); 214b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier visited->Set(obj); 215b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Walk instance fields of all objects 2162dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Class* klass = obj->GetClass(); 217b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier WalkInstanceFields(visited, callback, obj, klass, arg); 218b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Walk static fields of a Class 219b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (obj->IsClass()) { 220ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ObjectArray<mirror::ArtField>* fields = klass->GetSFields(); 221b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (fields != NULL) { 222b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier for (int32_t i = 0; i < fields->GetLength(); i++) { 223ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtField* field = fields->Get(i); 22461c5ebc6aee2cac1c363de6fbdac25ada1697fdbMathieu Chartier if (!field->IsPrimitiveType()) { 2252dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* value = field->GetObj(NULL); 226b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (value != NULL) { 227b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier WalkFieldsInOrder(visited, callback, value, arg); 228b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 229b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 230b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 231b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 232b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } else if (obj->IsObjectArray()) { 233b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier // Walk elements of an object array 2342dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::ObjectArray<mirror::Object>* obj_array = obj->AsObjectArray<mirror::Object>(); 235b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier int32_t length = obj_array->GetLength(); 236b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier for (int32_t i = 0; i < length; i++) { 2372dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* value = obj_array->Get(i); 238b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (value != NULL) { 239b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier WalkFieldsInOrder(visited, callback, value, arg); 240b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 241b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 242b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 243b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 244b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 245a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate<size_t kAlignment> 246a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiervoid SpaceBitmap<kAlignment>::InOrderWalk(ObjectCallback* callback, void* arg) { 247700a402244a1a423da4f3ba8032459f4b65fa18fIan Rogers std::unique_ptr<SpaceBitmap<kAlignment>> visited( 248a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier Create("bitmap for in-order walk", reinterpret_cast<byte*>(heap_begin_), 249a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier IndexToOffset(bitmap_size_ / kWordSize))); 250a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier CHECK(bitmap_begin_ != nullptr); 251a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier CHECK(callback != nullptr); 252357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier uintptr_t end = Size() / kWordSize; 253357e9be24c17a6bc2ae9fb53f25c73503116101dMathieu Chartier for (uintptr_t i = 0; i < end; ++i) { 254cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe // Need uint for unsigned shift. 255cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe uword w = bitmap_begin_[i]; 256b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier if (UNLIKELY(w != 0)) { 257b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier uintptr_t ptr_base = IndexToOffset(i) + heap_begin_; 258b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier while (w != 0) { 259cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe const size_t shift = CTZ(w); 2602dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* obj = reinterpret_cast<mirror::Object*>(ptr_base + shift * kAlignment); 261b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier WalkFieldsInOrder(visited.get(), callback, obj, arg); 262cb8aea4bd5e77857c713edeb62bffcb1f7f06a39Andreas Gampe w ^= (static_cast<uword>(1)) << shift; 263b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 264b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 265b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier } 266b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} 267b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier 268a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate class SpaceBitmap<kObjectAlignment>; 269a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartiertemplate class SpaceBitmap<kPageSize>; 270a8e8f9c0a8e259a807d7b99a148d14104c24209dMathieu Chartier 2711d54e73444e017d3a65234e0f193846f3e27472bIan Rogers} // namespace accounting 2721d54e73444e017d3a65234e0f193846f3e27472bIan Rogers} // namespace gc 273b062fdd4cb097fbae69b4bcb479c34d83ecab8caMathieu Chartier} // namespace art 274