1 files changed, 66 insertions, 0 deletions
diff --git a/runtime/gc/collector/sticky_mark_sweep.cc b/runtime/gc/collector/sticky_mark_sweep.cc
new file mode 100644
index 0000000..71e580d
--- /dev/null
+++ b/runtime/gc/collector/sticky_mark_sweep.cc
@@ -0,0 +1,66 @@
+/*
+ * 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() {
+  DisableFinger();
+  RecursiveMarkDirtyObjects(accounting::CardTable::kCardDirty - 1);
+}
+
+void StickyMarkSweep::Sweep(bool swap_bitmaps) {
+  timings_.NewSplit("SweepArray");
+  accounting::ObjectStack* live_stack = GetHeap()->GetLiveStack();
+  SweepArray(live_stack, false);
+}
+
+}  // namespace collector
+}  // namespace gc
+}  // namespace art