| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "gc/heap.h" |
| #include "gc/space/large_object_space.h" |
| #include "gc/space/space.h" |
| #include "sticky_mark_sweep.h" |
| #include "thread.h" |
| |
| namespace art { |
| namespace gc { |
| namespace collector { |
| |
| StickyMarkSweep::StickyMarkSweep(Heap* heap, bool is_concurrent, const std::string& name_prefix) |
| : PartialMarkSweep(heap, is_concurrent, |
| name_prefix + (name_prefix.empty() ? "" : " ") + "sticky") { |
| cumulative_timings_.SetName(GetName()); |
| } |
| |
| void StickyMarkSweep::BindBitmaps() { |
| PartialMarkSweep::BindBitmaps(); |
| |
| const std::vector<space::ContinuousSpace*>& spaces = GetHeap()->GetContinuousSpaces(); |
| WriterMutexLock mu(Thread::Current(), *Locks::heap_bitmap_lock_); |
| // For sticky GC, we want to bind the bitmaps of all spaces as the allocation stack lets us |
| // know what was allocated since the last GC. A side-effect of binding the allocation space mark |
| // and live bitmap is that marking the objects will place them in the live bitmap. |
| // TODO: C++0x |
| typedef std::vector<space::ContinuousSpace*>::const_iterator It; |
| for (It it = spaces.begin(), end = spaces.end(); it != end; ++it) { |
| space::ContinuousSpace* space = *it; |
| if (space->GetGcRetentionPolicy() == space::kGcRetentionPolicyAlwaysCollect) { |
| BindLiveToMarkBitmap(space); |
| } |
| } |
| |
| GetHeap()->GetLargeObjectsSpace()->CopyLiveToMarked(); |
| } |
| |
| void StickyMarkSweep::MarkReachableObjects() { |
| RecursiveMarkDirtyObjects(accounting::CardTable::kCardDirty - 1); |
| } |
| |
| void StickyMarkSweep::Sweep(bool swap_bitmaps) { |
| accounting::ObjectStack* live_stack = GetHeap()->GetLiveStack(); |
| SweepArray(live_stack, false); |
| } |
| |
| } // namespace collector |
| } // namespace gc |
| } // namespace art |