mirror of
https://github.com/ksherlock/profuse.git
synced 2024-12-24 17:29:22 +00:00
49 lines
858 B
C++
49 lines
858 B
C++
#ifndef __BITMAP_H__
|
|
#define __BITMAP_H__
|
|
|
|
#include <stdint.h>
|
|
|
|
|
|
|
|
namespace ProFUSE {
|
|
|
|
class BlockDevice;
|
|
|
|
|
|
class Bitmap {
|
|
public:
|
|
|
|
Bitmap(unsigned blocks);
|
|
Bitmap(BlockDevice *device, unsigned keyPointer, unsigned blocks);
|
|
//todo -- constructor by loading fro, block device...
|
|
~Bitmap();
|
|
|
|
int allocBlock();
|
|
int allocBlock(unsigned block);
|
|
|
|
void freeBlock(unsigned block);
|
|
|
|
|
|
unsigned freeBlocks() const { return _freeBlocks; }
|
|
unsigned blocks() const { return _blocks; }
|
|
unsigned bitmapBlocks() const { return _bitmapBlocks; }
|
|
unsigned bitmapSize() const { return _bitmapBlocks * 512; }
|
|
const void *bitmap() const { return _bitmap; }
|
|
|
|
private:
|
|
|
|
unsigned _freeIndex;
|
|
unsigned _freeBlocks;
|
|
|
|
unsigned _blocks;
|
|
unsigned _bitmapBlocks;
|
|
|
|
uint8_t *_bitmap;
|
|
};
|
|
|
|
|
|
|
|
}
|
|
|
|
#endif
|