Fennel: CacheAllocator Class Reference (original) (raw)
CacheAllocator defines an interface for allocating memory pages to be used by the cache. More...
#include <[CacheAllocator.h](CacheAllocator%5F8h-source.html)>
Inheritance diagram for CacheAllocator:
| Public Member Functions | |
|---|---|
| virtual | ~CacheAllocator () |
| virtual void * | allocate (int *pErrorCode=NULL)=0 |
| Allocates a chunk of memory of size determined by the constructor. | |
| virtual int | deallocate (void *pMem, int *pErrorCode=NULL)=0 |
| Deallocates a chunk of memory. | |
| virtual size_t | getBytesAllocated () const=0 |
| **Returns:**number of bytes currently allocated | |
| virtual int | setProtection (void *pMem, uint cb, bool readOnly, int *pErrorCode=NULL)=0 |
| Changes protection state for a contiguous range of virtual memory. |
Detailed Description
CacheAllocator defines an interface for allocating memory pages to be used by the cache.
Definition at line 33 of file CacheAllocator.h.
Constructor & Destructor Documentation
| CacheAllocator::~CacheAllocator | ( | | ) | [virtual] | | -------------------------------- | - | | - | ----------- |
Member Function Documentation
| virtual void* CacheAllocator::allocate | ( | int * | pErrorCode = NULL | ) | [pure virtual] |
|---|
| virtual int CacheAllocator::deallocate | ( | void * | pMem, |
|---|---|---|---|
| int * | pErrorCode = NULL | ||
| ) | [pure virtual] |
| virtual size_t CacheAllocator::getBytesAllocated | ( | | ) | const [pure virtual] | | ------------------------------------------------- | - | | - | ---------------------- |
Returns:
number of bytes currently allocated
Implemented in VMAllocator.
| virtual int CacheAllocator::setProtection | ( | void * | pMem, |
|---|---|---|---|
| uint | cb, | ||
| bool | readOnly, | ||
| int * | pErrorCode = NULL | ||
| ) | [pure virtual] |
Changes protection state for a contiguous range of virtual memory.
Parameters:
| pMem | start of range |
|---|---|
| cb | number of bytes in range |
| readOnly | true for read-only; false for read-write (TODO jvs 7-Feb-2006: support no-access as well) |
| pErrorCode | on error and if non-NULL, the int referenced is modified to contain the OS error code |
Returns:
0 on success; -1 if an error occurs while manupulating memory protections (see pErrorCode for OS error code)
Implemented in VMAllocator.
The documentation for this class was generated from the following files:
- /home/pub/open/dev/fennel/cache/CacheAllocator.h
- /home/pub/open/dev/fennel/cache/CacheAllocator.cpp
Generated on Mon Jun 22 04:00:27 2009 for Fennel by 
1.5.1