/*
|
* Copyright (C) 2015 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.
|
*/
|
|
#ifndef ART_RUNTIME_GC_COLLECTOR_IMMUNE_SPACES_H_
|
#define ART_RUNTIME_GC_COLLECTOR_IMMUNE_SPACES_H_
|
|
#include "base/locks.h"
|
#include "base/macros.h"
|
#include "gc/space/space.h"
|
#include "immune_region.h"
|
|
#include <set>
|
|
namespace art {
|
namespace gc {
|
namespace space {
|
class ContinuousSpace;
|
} // namespace space
|
|
namespace collector {
|
|
// ImmuneSpaces is a set of spaces which are not going to have any objects become marked during the
|
// GC.
|
class ImmuneSpaces {
|
class CompareByBegin {
|
public:
|
bool operator()(space::ContinuousSpace* a, space::ContinuousSpace* b) const;
|
};
|
|
public:
|
ImmuneSpaces() {}
|
void Reset();
|
|
// Add a continuous space to the immune spaces set.
|
void AddSpace(space::ContinuousSpace* space) REQUIRES(Locks::heap_bitmap_lock_);
|
|
// Returns true if an object is inside of the immune region (assumed to be marked). Only returns
|
// true for the largest immune region. The object can still be inside of an immune space.
|
ALWAYS_INLINE bool IsInImmuneRegion(const mirror::Object* obj) const {
|
return largest_immune_region_.ContainsObject(obj);
|
}
|
|
// Return true if the spaces is contained.
|
bool ContainsSpace(space::ContinuousSpace* space) const;
|
|
// Return the set of spaces in the immune region.
|
const std::set<space::ContinuousSpace*, CompareByBegin>& GetSpaces() {
|
return spaces_;
|
}
|
|
// Return the associated largest immune region.
|
const ImmuneRegion& GetLargestImmuneRegion() const {
|
return largest_immune_region_;
|
}
|
|
// Return true if the object is contained by any of the immune space.s
|
ALWAYS_INLINE bool ContainsObject(const mirror::Object* obj) const {
|
if (largest_immune_region_.ContainsObject(obj)) {
|
return true;
|
}
|
for (space::ContinuousSpace* space : spaces_) {
|
if (space->HasAddress(obj)) {
|
return true;
|
}
|
}
|
return false;
|
}
|
|
private:
|
// Setup the immune region to the largest continuous set of immune spaces. The immune region is
|
// just the for the fast path lookup.
|
void CreateLargestImmuneRegion();
|
|
std::set<space::ContinuousSpace*, CompareByBegin> spaces_;
|
ImmuneRegion largest_immune_region_;
|
};
|
|
} // namespace collector
|
} // namespace gc
|
} // namespace art
|
|
#endif // ART_RUNTIME_GC_COLLECTOR_IMMUNE_SPACES_H_
|
