public bool IsRegionModified(AMemory Memory, NvGpuBufferType BufferType, long PA, long Size)
{
bool[] Modified = Memory.IsRegionModified(PA, Size);
if (Modified == null)
{
return(true);
}
ClearCachedPagesIfNeeded();
long PageSize = Memory.GetHostPageSize();
long Mask = PageSize - 1;
long PAEnd = PA + Size;
bool RegMod = false;
int Index = 0;
while (PA < PAEnd)
{
long Key = PA & ~Mask;
long PAPgEnd = Math.Min((PA + PageSize) & ~Mask, PAEnd);
bool IsCached = Cache.TryGetValue(Key, out CachedPage Cp);
if (IsCached)
{
CpCount -= Cp.GetTotalCount();
SortedCache.Remove(Cp.Node);
}
else
{
Cp = new CachedPage();
Cache.Add(Key, Cp);
}
if (Modified[Index++] && IsCached)
{
Cp = new CachedPage();
Cache[Key] = Cp;
}
Cp.Node = SortedCache.AddLast(Key);
RegMod |= Cp.AddRange(PA, PAPgEnd, BufferType);
CpCount += Cp.GetTotalCount();
PA = PAPgEnd;
}
return(RegMod);
}
public bool IsRegionModified(AMemory Memory, NvGpuBufferType BufferType, long PA, long Size)
{
(bool[] Modified, long ModifiedCount) = Memory.IsRegionModified(PA, Size);
PA = Memory.GetPhysicalAddress(PA);
ClearCachedPagesIfNeeded();
long PageSize = AMemory.PageSize;
EnsureResidencyInitialized(PageSize);
bool HasResidents = AddResidency(PA, Size);
if (!HasResidents && ModifiedCount == 0)
{
return(false);
}
long Mask = PageSize - 1;
long ResidencyKey = PA;
long PAEnd = PA + Size;
bool RegMod = false;
int Index = 0;
while (PA < PAEnd)
{
long Key = PA & ~AMemory.PageMask;
long PAPgEnd = Math.Min((PA + AMemory.PageSize) & ~AMemory.PageMask, PAEnd);
bool IsCached = Cache.TryGetValue(Key, out CachedPage Cp);
if (IsCached)
{
CpCount -= Cp.GetTotalCount();
SortedCache.Remove(Cp.Node);
}
else
{
Cp = new CachedPage();
Cache.Add(Key, Cp);
}
if (Modified[Index++] && IsCached)
{
Cp = new CachedPage();
Cache[Key] = Cp;
}
Cp.AddResidency(ResidencyKey);
Cp.Node = SortedCache.AddLast(Key);
RegMod |= Cp.AddRange(PA, PAPgEnd, BufferType);
CpCount += Cp.GetTotalCount();
PA = PAPgEnd;
}
return(RegMod);
}
