llvm/lib/Support/Allocator.cpp

//===--- Allocator.cpp - Simple memory allocation abstraction -------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the BumpPtrAllocator interface.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/Allocator.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Memory.h"
#include "llvm/Support/Recycler.h"
#include "llvm/Support/raw_ostream.h"
#include <cstring>

namespace llvm {

SlabAllocator::~SlabAllocator() { }

MallocSlabAllocator::~MallocSlabAllocator() { }

void *MallocSlabAllocator::Allocate(size_t Size) {
  return Allocator.Allocate(Size, 0);
}

void MallocSlabAllocator::Deallocate(void *Slab, size_t Size) {
  Allocator.Deallocate(Slab);
}

void printBumpPtrAllocatorStats(unsigned NumSlabs, size_t BytesAllocated,
                                size_t TotalMemory) {
  errs() << "\nNumber of memory regions: " << NumSlabs << '\n'
         << "Bytes used: " << BytesAllocated << '\n'
         << "Bytes allocated: " << TotalMemory << '\n'
         << "Bytes wasted: " << (TotalMemory - BytesAllocated)
         << " (includes alignment, etc)\n";
}

void PrintRecyclerStats(size_t Size,
                        size_t Align,
                        size_t FreeListSize) {
  errs() << "Recycler element size: " << Size << '\n'
         << "Recycler element alignment: " << Align << '\n'
         << "Number of elements free for recycling: " << FreeListSize << '\n';
}

}