public VariableLengthBlittableAllocator(LogSettings settings, VariableLengthStructSettings <Key, Value> vlSettings, IFasterEqualityComparer <Key> comparer, Action <long, long> evictCallback = null, LightEpoch epoch = null, Action <CommitInfo> flushCallback = null)
: base(settings, comparer, evictCallback, epoch, flushCallback)
{
overflowPagePool = new OverflowPool <PageUnit>(4, p => p.handle.Free());
values = new byte[BufferSize][];
handles = new GCHandle[BufferSize];
pointers = new long[BufferSize];
ptrHandle = GCHandle.Alloc(pointers, GCHandleType.Pinned);
nativePointers = (long *)ptrHandle.AddrOfPinnedObject();
KeyLength = vlSettings.keyLength;
ValueLength = vlSettings.valueLength;
if (KeyLength == null)
{
fixedSizeKey = true;
KeyLength = new FixedLengthStruct <Key>();
}
if (ValueLength == null)
{
fixedSizeValue = true;
ValueLength = new FixedLengthStruct <Value>();
}
}
public BlittableAllocator(LogSettings settings, IFasterEqualityComparer <Key> comparer, Action <long, long> evictCallback = null, LightEpoch epoch = null, Action <CommitInfo> flushCallback = null)
: base(settings, comparer, evictCallback, epoch, flushCallback)
{
overflowPagePool = new OverflowPool <PageUnit>(4, p =>
#if NET5_0_OR_GREATER
{ }
#else
p.handle.Free()
#endif
);
if (BufferSize > 0)
{
values = new byte[BufferSize][];
#if NET5_0_OR_GREATER
pointers = GC.AllocateArray <long>(BufferSize, true);
nativePointers = (long *)Unsafe.AsPointer(ref pointers[0]);
#else
pointers = new long[BufferSize];
handles = new GCHandle[BufferSize];
ptrHandle = GCHandle.Alloc(pointers, GCHandleType.Pinned);
nativePointers = (long *)ptrHandle.AddrOfPinnedObject();
#endif
}
}
public BlittableAllocator(LogSettings settings, IFasterEqualityComparer <Key> comparer, Action <long, long> evictCallback = null, LightEpoch epoch = null, Action <CommitInfo> flushCallback = null)
: base(settings, comparer, evictCallback, epoch, flushCallback)
{
overflowPagePool = new OverflowPool <PageUnit>(4, p => p.handle.Free());
values = new byte[BufferSize][];
handles = new GCHandle[BufferSize];
pointers = new long[BufferSize];
ptrHandle = GCHandle.Alloc(pointers, GCHandleType.Pinned);
nativePointers = (long *)ptrHandle.AddrOfPinnedObject();
}
public GenericAllocator(LogSettings settings, SerializerSettings <Key, Value> serializerSettings, IFasterEqualityComparer <Key> comparer, Action <long, long> evictCallback = null, LightEpoch epoch = null, Action <CommitInfo> flushCallback = null)
: base(settings, comparer, evictCallback, epoch, flushCallback)
{
overflowPagePool = new OverflowPool <Record <Key, Value>[]>(4);
if (settings.ObjectLogDevice == null)
{
throw new FasterException("LogSettings.ObjectLogDevice needs to be specified (e.g., use Devices.CreateLogDevice, AzureStorageDevice, or NullDevice)");
}
SerializerSettings = serializerSettings ?? new SerializerSettings <Key, Value>();
if ((!keyBlittable) && (settings.LogDevice as NullDevice == null) && ((SerializerSettings == null) || (SerializerSettings.keySerializer == null)))
{
#if DEBUG
if (typeof(Key) != typeof(byte[]) && typeof(Key) != typeof(string))
{
Debug.WriteLine("Key is not blittable, but no serializer specified via SerializerSettings. Using (slow) DataContractSerializer as default.");
}
#endif
SerializerSettings.keySerializer = ObjectSerializer.Get <Key>();
}
if ((!valueBlittable) && (settings.LogDevice as NullDevice == null) && ((SerializerSettings == null) || (SerializerSettings.valueSerializer == null)))
{
#if DEBUG
if (typeof(Value) != typeof(byte[]) && typeof(Value) != typeof(string))
{
Debug.WriteLine("Value is not blittable, but no serializer specified via SerializerSettings. Using (slow) DataContractSerializer as default.");
}
#endif
SerializerSettings.valueSerializer = ObjectSerializer.Get <Value>();
}
values = new Record <Key, Value> [BufferSize][];
segmentOffsets = new long[SegmentBufferSize];
objectLogDevice = settings.ObjectLogDevice;
if ((settings.LogDevice as NullDevice == null) && (KeyHasObjects() || ValueHasObjects()))
{
if (objectLogDevice == null)
{
throw new FasterException("Objects in key/value, but object log not provided during creation of FASTER instance");
}
if (objectLogDevice.SegmentSize != -1)
{
throw new FasterException("Object log device should not have fixed segment size. Set preallocateFile to false when calling CreateLogDevice for object log");
}
}
}