//===--- 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 namespace llvm { SlabAllocator::~SlabAllocator() { } MallocSlabAllocator::~MallocSlabAllocator() { } MemSlab *MallocSlabAllocator::Allocate(size_t Size) { MemSlab *Slab = (MemSlab*)Allocator.Allocate(Size, 0); Slab->Size = Size; Slab->NextPtr = 0; return Slab; } void MallocSlabAllocator::Deallocate(MemSlab *Slab) { Allocator.Deallocate(Slab); } void BumpPtrAllocatorBase::PrintStats() const { unsigned NumSlabs = 0; size_t TotalMemory = 0; for (MemSlab *Slab = CurSlab; Slab != 0; Slab = Slab->NextPtr) { TotalMemory += Slab->Size; ++NumSlabs; } errs() << "\nNumber of memory regions: " << NumSlabs << '\n' << "Bytes used: " << BytesAllocated << '\n' << "Bytes allocated: " << TotalMemory << '\n' << "Bytes wasted: " << (TotalMemory - BytesAllocated) << " (includes alignment, etc)\n"; } size_t BumpPtrAllocatorBase::getTotalMemory() const { size_t TotalMemory = 0; for (MemSlab *Slab = CurSlab; Slab != 0; Slab = Slab->NextPtr) { TotalMemory += Slab->Size; } return TotalMemory; } 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'; } }