#define LLVM_SUPPORT_ALLOCATOR_H
#include "llvm/Support/AlignOf.h"
+#include "llvm/Support/DataTypes.h"
#include "llvm/Support/MathExtras.h"
-#include "llvm/System/DataTypes.h"
#include <algorithm>
#include <cassert>
-#include <cstdlib>
#include <cstddef>
+#include <cstdlib>
namespace llvm {
+template <typename T> struct ReferenceAdder { typedef T& result; };
+template <typename T> struct ReferenceAdder<T&> { typedef T result; };
class MallocAllocator {
public:
public:
MallocSlabAllocator() : Allocator() { }
virtual ~MallocSlabAllocator();
- virtual MemSlab *Allocate(size_t Size);
- virtual void Deallocate(MemSlab *Slab);
+ virtual MemSlab *Allocate(size_t Size) LLVM_OVERRIDE;
+ virtual void Deallocate(MemSlab *Slab) LLVM_OVERRIDE;
};
/// BumpPtrAllocator - This allocator is useful for containers that need
/// allocating memory, and never deletes it until the entire block is dead. This
/// makes allocation speedy, but must only be used when the trade-off is ok.
class BumpPtrAllocator {
- BumpPtrAllocator(const BumpPtrAllocator &); // do not implement
- void operator=(const BumpPtrAllocator &); // do not implement
+ BumpPtrAllocator(const BumpPtrAllocator &) LLVM_DELETED_FUNCTION;
+ void operator=(const BumpPtrAllocator &) LLVM_DELETED_FUNCTION;
/// SlabSize - Allocate data into slabs of this size unless we get an
/// allocation above SizeThreshold.
unsigned GetNumSlabs() const;
void PrintStats() const;
+
+ /// Compute the total physical memory allocated by this allocator.
+ size_t getTotalMemory() const;
};
/// SpecificBumpPtrAllocator - Same as BumpPtrAllocator but allows only
char *End = Slab == Allocator.CurSlab ? Allocator.CurPtr :
(char *)Slab + Slab->Size;
for (char *Ptr = (char*)(Slab+1); Ptr < End; Ptr += sizeof(T)) {
- Ptr = Allocator.AlignPtr(Ptr, alignof<T>());
- if (Ptr + sizeof(T) <= End)
+ Ptr = Allocator.AlignPtr(Ptr, alignOf<T>());
+ if (Ptr + sizeof(T) <= End)
reinterpret_cast<T*>(Ptr)->~T();
}
Slab = Slab->NextPtr;
inline void *operator new(size_t Size, llvm::BumpPtrAllocator &Allocator) {
struct S {
char c;
-#ifdef __GNUC__
- char x __attribute__((aligned));
-#else
union {
double D;
long double LD;
long long L;
void *P;
} x;
-#endif
};
return Allocator.Allocate(Size, std::min((size_t)llvm::NextPowerOf2(Size),
offsetof(S, x)));
}
+inline void operator delete(void *, llvm::BumpPtrAllocator &) {}
+
#endif // LLVM_SUPPORT_ALLOCATOR_H