private SegmentInformation AllocateSegment(int size)
{
byte *start = (byte *)Marshal.AllocHGlobal(size).ToPointer();
byte *end = start + size;
var segment = new SegmentInformation {
Start = start, Current = start, End = end, CanDispose = true
};
_wholeSegments.Add(segment);
return(segment);
}
private void AllocateExternalSegment(int size)
{
byte *start = (byte *)Marshal.AllocHGlobal(size).ToPointer();
byte *end = start + size;
_externalCurrent = new SegmentInformation {
Start = start, Current = start, End = end, CanDispose = true
};
_externalAlignedSize = (sizeof(ByteStringStorage) + (sizeof(long) - sizeof(ByteStringStorage) % sizeof(long)));
_externalCurrentLeft = (int)(_externalCurrent.End - _externalCurrent.Start) / _externalAlignedSize;
_wholeSegments.Add(_externalCurrent);
}
public static Texture CreateDummyHeightTextureDependentOnPixelPosition(SegmentInformation segmentInformation, float offset, float stepMultiplier)
{
var tex = new Texture2D(240, 240, TextureFormat.RFloat, false);
float[] rawTextureData = new float[tex.width * tex.height];
for (int x = 0; x < tex.width; x++)
{
for (int y = 0; y < tex.height; y++)
{
rawTextureData[x + y * tex.width] = offset + ((x + y * 4) / 400f) * stepMultiplier;
}
}
tex.LoadRawTextureData(CastUtils.ConvertFloatArrayToByte(rawTextureData));
tex.Apply();
return(tex);
}
public ByteStringContext(int allocationBlockSize = DefaultAllocationBlockSizeInBytes)
{
if (allocationBlockSize < MinBlockSizeInBytes)
{
throw new ArgumentException($"It is not a good idea to allocate chunks of less than the {nameof(MinBlockSizeInBytes)} value of {MinBlockSizeInBytes}");
}
this._allocationBlockSize = allocationBlockSize;
this._wholeSegments = new List <SegmentInformation>();
this._internalReadyToUseMemorySegments = new List <SegmentInformation>();
this._internalReusableStringPool = new Stack <IntPtr> [LogMinBlockSize];
this._internalReusableStringPoolCount = new int[LogMinBlockSize];
this._internalCurrent = AllocateSegment(allocationBlockSize);
this._externalCurrent = AllocateSegment(allocationBlockSize);
this._externalStringPool = new Stack <IntPtr>(64);
PrepareForValidation();
}
public ActionResult <SegmentInformation> Get(string City1, string City2, string parcelType, int parcelWeight, bool signed)
{
City1 = City1.ToLower();
City2 = City2.ToLower();
parcelType = parcelType.ToLower();
DatabaseLookupController databaseLookup = new DatabaseLookupController();
List <Edge> allEdges = databaseLookup.queryForMap().Value;
List <string[]> prices = databaseLookup.queryForPricingData().Value;
SegmentInformation newSeg = new SegmentInformation();
List <string> formattedPrices = new List <string>();
foreach (string[] price in prices)
{
string formattedPrice = Convert.ToString(price.GetValue(1));
formattedPrice.Replace(",", ".");
formattedPrices.Add(formattedPrice);
}
foreach (Edge edge in allEdges)
{
string startCity = edge.fromCity.name.ToLower();
string endCity = edge.toCity.name.ToLower();
if (startCity.Equals(City1) || endCity.Equals(City1))
{
if (startCity.Equals(City2) || endCity.Equals(City2))
{
double priceOfDelivery = 0;
Edge edgeForDelivery = edge;
int nodesEdgeForDelivery = Convert.ToInt32(edgeForDelivery.node);
if (parcelType.Equals("standard"))
{
priceOfDelivery = Convert.ToDouble(formattedPrices[0]) * nodesEdgeForDelivery;
}
else if (parcelType.Equals("weapons"))
{
priceOfDelivery = Convert.ToDouble(formattedPrices[0]) * Convert.ToDouble(formattedPrices[2]) * nodesEdgeForDelivery;
}
else if (parcelType.Equals("live animals"))
{
priceOfDelivery = Convert.ToDouble(formattedPrices[0]) * Convert.ToDouble(formattedPrices[3]) * nodesEdgeForDelivery;
}
else if (parcelType.Equals("cautious parcels"))
{
priceOfDelivery = Convert.ToDouble(formattedPrices[0]) * Convert.ToDouble(formattedPrices[4]) * nodesEdgeForDelivery;
}
else if (parcelType.Equals("refrigerated goods"))
{
priceOfDelivery = Convert.ToDouble(formattedPrices[0]) * Convert.ToDouble(formattedPrices[5]) * nodesEdgeForDelivery;
}
if (parcelWeight > 40)
{
priceOfDelivery = 0;
}
int timeOfDelivery = 4 * nodesEdgeForDelivery;
newSeg.price = priceOfDelivery;
newSeg.time = timeOfDelivery;
if (newSeg.price == 0)
{
newSeg.available = false;
}
else
{
newSeg.available = true;
}
}
}
}
if (newSeg == null)
{
return(NotFound());
}
return(newSeg);
}
public void Release(ref ByteString value)
{
Debug.Assert(value._pointer != null, "Pointer cannot be null. You have a defect in your code.");
if (value._pointer == null)
{
return;
}
// We are releasing, therefore we should validate among other things if an immutable string changed and if we are the owners.
ValidateAndUnregister(value);
if (value.IsExternal)
{
// We release the pointer in the appropriate reuse pool.
if (this._externalFastPoolCount < ExternalFastPoolSize)
{
// Release in the fast pool.
this._externalFastPool[this._externalFastPoolCount++] = new IntPtr(value._pointer);
}
else
{
this._externalStringPool.Push(new IntPtr(value._pointer));
}
}
else
{
int reusablePoolIndex = GetPoolIndexForReuse(value._pointer->Size);
if (value._pointer->Size <= MinBlockSizeInBytes)
{
Stack <IntPtr> pool = this._internalReusableStringPool[reusablePoolIndex];
if (pool == null)
{
pool = new Stack <IntPtr>();
this._internalReusableStringPool[reusablePoolIndex] = pool;
}
pool.Push(new IntPtr(value._pointer));
this._internalReusableStringPoolCount[reusablePoolIndex]++;
}
else // The released memory is big enough, we will just release it as a new segment.
{
byte *start = (byte *)value._pointer;
byte *end = start + value._pointer->Size;
var segment = new SegmentInformation {
Start = start, Current = start, End = end, CanDispose = false
};
_internalReadyToUseMemorySegments.Add(segment);
}
}
#if VALIDATE
// Setting the null key ensures that in between we can validate that no further deallocation
// happens on this memory segment.
value._pointer->Key = ByteStringStorage.NullKey;
// Setting the length to zero ensures that the hash returns 0 and do not
// fail with an AccessViolationException because there is garbage stored here.
value._pointer->Length = 0;
#endif
// WE WANT it to happen, no matter what.
value._pointer = null;
}
private ByteString AllocateInternal(int length, ByteStringType type)
{
Debug.Assert((type & ByteStringType.External) == 0, "This allocation routine is only for use with internal storage byte strings.");
type &= ~ByteStringType.External; // We are allocating internal, so we will force it (even if we are checking for it in debug).
int allocationSize = length + sizeof(ByteStringStorage);
// This is even bigger than the configured allocation block size. There is no reason why we shouldn't
// allocate it directly. When released (if released) this will be reused as a segment, ensuring that the context
// could handle that.
if (allocationSize > _allocationBlockSize)
{
return(AllocateWholeSegment(length, type)); // We will pass the length because this is a whole allocated segment able to hold a length size ByteString.
}
int reusablePoolIndex = GetPoolIndexForReuse(allocationSize);
int allocationUnit = Bits.NextPowerOf2(allocationSize);
// The allocation unit is bigger than MinBlockSize (therefore it wont be 2^n aligned).
// Then we will 64bits align the allocation.
if (allocationUnit > MinBlockSizeInBytes)
{
allocationUnit += sizeof(long) - allocationUnit % sizeof(long);
}
// All allocation units are 32 bits aligned. If not we will have a performance issue.
Debug.Assert(allocationUnit % sizeof(int) == 0);
// If we can reuse... we retrieve those.
if (allocationSize <= MinBlockSizeInBytes && _internalReusableStringPoolCount[reusablePoolIndex] != 0)
{
// This is a stack because hotter memory will be on top.
Stack <IntPtr> pool = _internalReusableStringPool[reusablePoolIndex];
_internalReusableStringPoolCount[reusablePoolIndex]--;
void *ptr = pool.Pop().ToPointer();
return(Create(ptr, length, allocationUnit, type));
}
else
{
int currentSizeLeft = _internalCurrent.SizeLeft;
if (allocationUnit > currentSizeLeft) // This shouldn't happen that much, if it does you should increase your default allocation block.
{
SegmentInformation segment = null;
// We will try to find a hot segment with enough space if available.
// Older (colder) segments are at the front of the list. That's why we would start scanning backwards.
for (int i = _internalReadyToUseMemorySegments.Count - 1; i >= 0; i--)
{
var segmentValue = _internalReadyToUseMemorySegments[i];
if (segmentValue.SizeLeft >= allocationUnit)
{
// Put the last where this one is (if it is the same, this is a no-op) and remove it from the list.
_internalReadyToUseMemorySegments[i] = _internalReadyToUseMemorySegments[_internalReadyToUseMemorySegments.Count - 1];
_internalReadyToUseMemorySegments.RemoveAt(_internalReadyToUseMemorySegments.Count - 1);
segment = segmentValue;
break;
}
}
// If the size left is bigger than MinBlockSize, we release current as a reusable segment
if (currentSizeLeft > MinBlockSizeInBytes)
{
byte *start = _internalCurrent.Current;
byte *end = start + currentSizeLeft;
_internalReadyToUseMemorySegments.Add(new SegmentInformation {
Start = start, Current = start, End = end, CanDispose = false
});
}
else if (currentSizeLeft > sizeof(ByteStringType) + MinReusableBlockSizeInBytes)
{
// The memory chunk left is big enough to make sense to reuse it.
reusablePoolIndex = GetPoolIndexForReservation(currentSizeLeft);
Stack <IntPtr> pool = this._internalReusableStringPool[reusablePoolIndex];
if (pool == null)
{
pool = new Stack <IntPtr>();
this._internalReusableStringPool[reusablePoolIndex] = pool;
}
pool.Push(new IntPtr(_internalCurrent.Current));
this._internalReusableStringPoolCount[reusablePoolIndex]++;
}
// Use the segment and if there is no segment available that matches the request, just get a new one.
this._internalCurrent = segment ?? AllocateSegment(_allocationBlockSize);
}
var byteString = Create(_internalCurrent.Current, length, allocationUnit, type);
_internalCurrent.Current += byteString._pointer->Size;
return(byteString);
}
}
public void SegmentStateChange(SegmentInformation segmentInfo)
{
}
public void RemoveSegment(SegmentInformation segmentInfo)
{
}
public void AddSegment(SegmentInformation segmentInfo)
{
var token = new SegmentGenerationProcessToken(SegmentGenerationProcessSituation.BeforeStartOfCreation, RequiredSegmentSituation.Filled);
_executor.ExecuteSegmentAction(token, segmentInfo.SegmentAlignedPosition);
}
