private static bool CheckSynced(PCache cache)
{
PgHdr p;
for (p = cache.DirtyTail; p != cache.Synced; p = p.DirtyPrev)
Debug.Assert(p.Refs != 0 || (p.Flags & PgHdr.PGHDR.NEED_SYNC) != 0);
return (p == null || p.Refs != 0 || (p.Flags & PgHdr.PGHDR.NEED_SYNC) == 0);
}
private static bool CheckSynced(PCache cache)
{
PgHdr p;
for (p = cache.DirtyTail; p != cache.Synced; p = p.DirtyPrev)
{
Debug.Assert(p.Refs != 0 || (p.Flags & PgHdr.PGHDR.NEED_SYNC) != 0);
}
return(p == null || p.Refs != 0 || (p.Flags & PgHdr.PGHDR.NEED_SYNC) == 0);
}
public static void Move(PgHdr p, Pid newID)
{
PCache cache = p.Cache;
Debug.Assert(p.Refs > 0);
Debug.Assert(newID > 0);
cache.Cache.Rekey(p.Page, p.ID, newID);
p.ID = newID;
if ((p.Flags & PgHdr.PGHDR.DIRTY) != 0 && (p.Flags & PgHdr.PGHDR.NEED_SYNC) != 0)
{
RemoveFromDirtyList(p);
AddToDirtyList(p);
}
}
//public static implicit operator bool(PgHdr b) { return (b != null); }
public void memset()
{
//Page = null;
Data = null;
Extra = null;
Dirty = null;
Pager = null;
ID = 0;
#if CHECK_PAGES
PageHash = 0;
#endif
Flags = 0;
Refs = 0;
Cache = null;
DirtyNext = null;
DirtyPrev = null;
}
//public static int SizeOf()
//{
// return 4;
//}
public static void Open(int sizePage, int sizeExtra, bool purgeable, Func<object, PgHdr, RC> stress, object stressArg, PCache p)
{
p.memset();
p.SizePage = sizePage;
p.SizeExtra = sizeExtra;
p.Purgeable = purgeable;
p.Stress = stress;
p.StressArg = stressArg;
p.SizeCache = 100;
}
//public static int SizeOf()
//{
// return 4;
//}
public static void Open(int sizePage, int sizeExtra, bool purgeable, Func <object, PgHdr, RC> stress, object stressArg, PCache p)
{
p.memset();
p.SizePage = sizePage;
p.SizeExtra = sizeExtra;
p.Purgeable = purgeable;
p.Stress = stress;
p.StressArg = stressArg;
p.SizeCache = 100;
}
//public static implicit operator bool(PgHdr b) { return (b != null); }
public void memset()
{
//Page = null;
Data = null;
Extra = null;
Dirty = null;
Pager = null;
ID = 0;
#if CHECK_PAGES
PageHash = 0;
#endif
Flags = 0;
Refs = 0;
Cache = null;
DirtyNext = null;
DirtyPrev = null;
}