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//===- PageManager.h - Allocates memory on page boundaries ------*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
// This file defines the interface used by the pool allocator to allocate memory
// on large alignment boundaries.
/// InitializePageManager - This function must be called before any other page
/// manager accesses are performed. It may be called multiple times.
void InitializePageManager();
/// PageSize - Contains the size of the unit of memory allocated by
/// AllocatePage. This is a value that is typically several kilobytes in size,
/// and is guaranteed to be a power of two.
extern unsigned PageSize;
/// AllocatePage - This function returns a chunk of memory with size and
/// alignment specified by getPageSize().
void *AllocatePage();
/// AllocateNPages -
void *AllocateNPages(unsigned Num);
/// FreePage - This function returns the specified page to the pagemanager for
/// future allocation.
void FreePage(void *Page);