28 lines
599 B
C++
28 lines
599 B
C++
|
#include "swapFileManager.h"
|
||
|
|
//#include <stdio.h>
|
||
|
|
|
||
|
|
swapFileManager::swapFileManager(void)
|
||
|
|
{
|
||
|
|
swapFile = open("/tmp/OBOS_swap",O_RDWR );
|
||
|
|
}
|
||
|
|
|
||
|
|
void swapFileManager::write_block(vnode node,void *loc,unsigned long size)
|
||
|
|
{
|
||
|
|
lseek(node.fd,SEEK_SET,node.offset);
|
||
|
|
write(node.fd,loc,size);
|
||
|
|
}
|
||
|
|
|
||
|
|
void swapFileManager::read_block(vnode node,void *loc,unsigned long size)
|
||
|
|
{
|
||
|
|
lseek(node.fd,SEEK_SET,node.offset);
|
||
|
|
read(node.fd,loc,size);
|
||
|
|
}
|
||
|
|
|
||
|
|
vnode swapFileManager::findNode(void)
|
||
|
|
{
|
||
|
|
vnode tmp;
|
||
|
|
tmp.fd=swapFile;
|
||
|
|
tmp.offset=maxNode+=PAGE_SIZE; // Can't ever free, swap file grows forever... :-(
|
||
|
|
return tmp;
|
||
|
|
}
|