| /*===- 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. |
| // |
| //===----------------------------------------------------------------------===*/ |
| |
| #ifndef PAGEMANAGER_H |
| #define PAGEMANAGER_H |
| |
| /* 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(); |
| void *RemapPage(void *va); |
| |
| /* AllocateNPages - */ |
| void *AllocateNPages(unsigned Num); |
| |
| void MprotectPage(void *Page, unsigned NumPages); |
| |
| /* FreePage - This function returns the specified page to the pagemanager for |
| /// future allocation. |
| */ |
| void FreePage(void *Page); |
| |
| #endif |
