| //===- 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. |
| /// |
| unsigned int 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(); |
| |
| /// FreePage - This function returns the specified page to the pagemanager for |
| /// future allocation. |
| void FreePage(void *Page); |
| |
| /// GetPages - Just allocate the specified pages on a page boundary. This is |
| /// a hack for large arrays. |
| void * GetPages (unsigned NumPages); |
| |
| #endif |
