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// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_HEAP_CPPGC_GARBAGE_COLLECTOR_H_
#define V8_HEAP_CPPGC_GARBAGE_COLLECTOR_H_
#include "src/heap/cppgc/marker.h"
#include "src/heap/cppgc/sweeper.h"
namespace cppgc {
namespace internal {
// GC interface that allows abstraction over the actual GC invocation. This is
// needed to mock/fake GC for testing.
class GarbageCollector {
public:
struct Config {
using CollectionType = Marker::MarkingConfig::CollectionType;
using StackState = cppgc::Heap::StackState;
using MarkingType = Marker::MarkingConfig::MarkingType;
using SweepingType = Sweeper::Config;
static constexpr Config ConservativeAtomicConfig() {
return {CollectionType::kMajor, StackState::kMayContainHeapPointers,
MarkingType::kAtomic, SweepingType::kAtomic};
}
static constexpr Config PreciseAtomicConfig() {
return {CollectionType::kMajor, StackState::kNoHeapPointers,
MarkingType::kAtomic, SweepingType::kAtomic};
}
static constexpr Config ConservativeIncrementalConfig() {
return {CollectionType::kMajor, StackState::kMayContainHeapPointers,
MarkingType::kIncremental, SweepingType::kAtomic};
}
static constexpr Config PreciseIncrementalConfig() {
return {CollectionType::kMajor, StackState::kNoHeapPointers,
MarkingType::kIncremental, SweepingType::kAtomic};
}
static constexpr Config MinorPreciseAtomicConfig() {
return {CollectionType::kMinor, StackState::kNoHeapPointers,
MarkingType::kAtomic, SweepingType::kAtomic};
}
CollectionType collection_type = CollectionType::kMajor;
StackState stack_state = StackState::kMayContainHeapPointers;
MarkingType marking_type = MarkingType::kAtomic;
SweepingType sweeping_type = SweepingType::kAtomic;
};
// Executes a garbage collection specified in config.
virtual void CollectGarbage(Config) = 0;
virtual void StartIncrementalGarbageCollection(Config) = 0;
// The current epoch that the GC maintains. The epoch is increased on every
// GC invocation.
virtual size_t epoch() const = 0;
};
} // namespace internal
} // namespace cppgc
#endif // V8_HEAP_CPPGC_GARBAGE_COLLECTOR_H_
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