public void Pack(FileInfo archiveFile, DirectoryInfo rootDir)
{
var rootRecord = ScanDirectory(rootDir);
var memoryStream = new MemoryStream();
Persistance.Write(memoryStream, rootRecord);
var listingBytes = memoryStream.ToArray();
long listingSize = listingBytes.LongLength;
long payloadSize = currentOffset;
long payloadOffset = IntegerUtils.NextLargerMultiple(HeaderSize + listingSize, OffsetGranularity);
long totalSize = payloadOffset + payloadSize;
using (var archiveMap = MemoryMappedFile.CreateFromFile(archiveFile.FullName, FileMode.Create, archiveFile.Name, totalSize)) {
//write header
using (var headerAccessor = archiveMap.CreateViewAccessor(0, HeaderSize)) {
headerAccessor.Write(0, listingSize);
headerAccessor.Write(sizeof(long), payloadOffset);
}
//write listing
using (var listingAccessor = archiveMap.CreateViewAccessor(HeaderSize, listingSize)) {
listingAccessor.WriteArray(0, listingBytes, 0, listingBytes.Length);
}
WriteDirectory(archiveMap, payloadOffset, rootRecord, rootDir);
}
}
public void TestNextLargerMultiple()
{
Assert.AreEqual(0, IntegerUtils.NextLargerMultiple(0, 3));
Assert.AreEqual(3, IntegerUtils.NextLargerMultiple(1, 3));
Assert.AreEqual(3, IntegerUtils.NextLargerMultiple(2, 3));
Assert.AreEqual(3, IntegerUtils.NextLargerMultiple(3, 3));
Assert.AreEqual(6, IntegerUtils.NextLargerMultiple(4, 3));
Assert.AreEqual(6, IntegerUtils.NextLargerMultiple(5, 3));
}
public ConstantBufferManager(Device device)
{
this.buffer = new SharpDX.Direct3D11.Buffer(device, IntegerUtils.NextLargerMultiple(SizeOfTInBytes, 16), ResourceUsage.Dynamic, BindFlags.ConstantBuffer, CpuAccessFlags.Write, ResourceOptionFlags.None, 0);
}
private void IncrementOffset(long size)
{
currentOffset = IntegerUtils.NextLargerMultiple(currentOffset + size, OffsetGranularity);
}