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//===-- scudo_allocator_combined.h ------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// Scudo Combined Allocator, dispatches allocation & deallocation requests to
/// the Primary or the Secondary backend allocators.
///
//===----------------------------------------------------------------------===//
#ifndef SCUDO_ALLOCATOR_COMBINED_H_
#define SCUDO_ALLOCATOR_COMBINED_H_
#ifndef SCUDO_ALLOCATOR_H_
#error "This file must be included inside scudo_allocator.h."
#endif
template <class PrimaryAllocator, class AllocatorCache,
class SecondaryAllocator>
class ScudoCombinedAllocator {
public:
void Init(s32 ReleaseToOSIntervalMs) {
Primary.Init(ReleaseToOSIntervalMs);
Secondary.Init();
Stats.Init();
}
void *Allocate(AllocatorCache *Cache, uptr Size, uptr Alignment,
bool FromPrimary) {
if (FromPrimary)
return Cache->Allocate(&Primary, Primary.ClassID(Size));
return Secondary.Allocate(&Stats, Size, Alignment);
}
void Deallocate(AllocatorCache *Cache, void *Ptr, bool FromPrimary) {
if (FromPrimary)
Cache->Deallocate(&Primary, Primary.GetSizeClass(Ptr), Ptr);
else
Secondary.Deallocate(&Stats, Ptr);
}
uptr GetActuallyAllocatedSize(void *Ptr, bool FromPrimary) {
if (FromPrimary)
return PrimaryAllocator::ClassIdToSize(Primary.GetSizeClass(Ptr));
return Secondary.GetActuallyAllocatedSize(Ptr);
}
void InitCache(AllocatorCache *Cache) {
Cache->Init(&Stats);
}
void DestroyCache(AllocatorCache *Cache) {
Cache->Destroy(&Primary, &Stats);
}
void GetStats(AllocatorStatCounters StatType) const {
Stats.Get(StatType);
}
private:
PrimaryAllocator Primary;
SecondaryAllocator Secondary;
AllocatorGlobalStats Stats;
};
#endif // SCUDO_ALLOCATOR_COMBINED_H_
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