* Copyright 2007, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef PAGE_CACHE_LOCKER_H
#define PAGE_CACHE_LOCKER_H
#include <null.h>
struct vm_page;
class PageCacheLocker {
public:
inline PageCacheLocker(vm_page* page,
bool dontWait = true);
inline ~PageCacheLocker();
bool IsLocked() { return fPage != NULL; }
bool Lock(vm_page* page, bool dontWait = true);
void Unlock();
private:
bool _IgnorePage(vm_page* page);
vm_page* fPage;
};
PageCacheLocker::PageCacheLocker(vm_page* page, bool dontWait)
:
fPage(NULL)
{
Lock(page, dontWait);
}
PageCacheLocker::~PageCacheLocker()
{
Unlock();
}
#endif
