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/*
* Copyright (C) 2014 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 "immune_region.h"
#include "gc/space/space-inl.h"
#include "mirror/object.h"
namespace art {
namespace gc {
namespace collector {
ImmuneRegion::ImmuneRegion() {
Reset();
}
void ImmuneRegion::Reset() {
SetBegin(nullptr);
SetEnd(nullptr);
}
bool ImmuneRegion::AddContinuousSpace(space::ContinuousSpace* space) {
// Bind live to mark bitmap if necessary.
if (space->GetLiveBitmap() != space->GetMarkBitmap()) {
CHECK(space->IsContinuousMemMapAllocSpace());
space->AsContinuousMemMapAllocSpace()->BindLiveToMarkBitmap();
}
mirror::Object* space_begin = reinterpret_cast<mirror::Object*>(space->Begin());
mirror::Object* space_limit = reinterpret_cast<mirror::Object*>(space->Limit());
if (IsEmpty()) {
SetBegin(space_begin);
SetEnd(space_limit);
} else {
if (space_limit <= begin_) { // Space is before the immune region.
SetBegin(space_begin);
} else if (space_begin >= end_) { // Space is after the immune region.
SetEnd(space_limit);
} else {
return false;
}
}
return true;
}
bool ImmuneRegion::ContainsSpace(const space::ContinuousSpace* space) const {
bool contains =
begin_ <= reinterpret_cast<mirror::Object*>(space->Begin()) &&
end_ >= reinterpret_cast<mirror::Object*>(space->Limit());
if (kIsDebugBuild && contains) {
// A bump pointer space shoult not be in the immune region.
DCHECK(space->GetType() != space::kSpaceTypeBumpPointerSpace);
}
return contains;
}
} // namespace collector
} // namespace gc
} // namespace art
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