public void CreateViewAccessor_FileMappingViewHandleIsValid()
{
// arrange
string path = @"../../Data/testdata.txt"; // source file;
// act
bool handleWasInitialized = false;
FileMappingViewAccessor accessor;
using (var hFileMapping = FileMappingWrapper.CreateFromFile(path))
{
using (accessor = hFileMapping.CreateViewAccessor(0, 0))
{
if (accessor.FileMappingViewHandle != null &&
!accessor.FileMappingViewHandle.IsInvalid)
{
handleWasInitialized = true;
}
}
}
// assert
Assert.IsTrue(handleWasInitialized, "_01");
Assert.IsTrue(accessor.FileMappingViewHandle != null, "_02");
Assert.IsTrue(accessor.FileMappingViewHandle.IsInvalid, "_03");
}
static void Main(string[] args)
{
string path = args[1]; // source file;
if (!File.Exists(path))
{
WriteMessageToUser("Can't find source file [{0}]", path);
}
Win32.SystemInfo info;
Win32.GetSystemInfo(out info);
WriteMessageToUser("NumberOfProcessors: {0}", info.NumberOfProcessors);
WriteMessageToUser("AllocationGranularity: {0}", info.AllocationGranularity);
WriteMessageToUser("PageSize: {0}", info.PageSize);
WriteMessageToUser("ProcessorArchitecture: {0}", info.ProcessorArchitecture);
using (var fileMapping = FileMappingWrapper.CreateFromFile(path))
{
long offset = 0;
long length = new FileInfo(path).Length;
long bytesInBlock = info.AllocationGranularity;
while (length > 0)
{
if (length < bytesInBlock)
{
bytesInBlock = length;
}
using (var accessor = fileMapping.CreateViewAccessor(offset, bytesInBlock))
{
int size = Marshal.SizeOf(typeof(byte));
for (long i = 0; i < bytesInBlock; i += size)
{
byte value = accessor.ReadByte(i);
if (value == 0xF)
{
value -= 0x1;
}
else if (value == 0xA)
{
value += 0x1;
}
//accessor.WriteByte(i, value);
}
}
WriteMessageToUser("offset: {0}, length: {1}", offset, length);
offset += bytesInBlock;
length -= bytesInBlock;
}
}
WriteMessageToUser("{0} completed", args[0]);
Console.ReadLine();
}
internal SourceReader(string path, int granularity)
{
this.Path = path;
this.Granularity = granularity;
// можно использовать лэйзи.
fileMapping = FileMappingWrapper.CreateFromFile(Path);
offset = 0;
length = new FileInfo(Path).Length;
bytesInBlock = Granularity;
}
static void Main(string[] args)
{
string path = args[1]; // source file;
if (!File.Exists(path))
{
WriteMessageToUser("Can't find source file [{0}]", path);
}
Win32.SystemInfo info;
Win32.GetSystemInfo(out info);
WriteMessageToUser("NumberOfProcessors: {0}", info.NumberOfProcessors);
WriteMessageToUser("AllocationGranularity: {0}", info.AllocationGranularity);
WriteMessageToUser("PageSize: {0}", info.PageSize);
WriteMessageToUser("ProcessorArchitecture: {0}", info.ProcessorArchitecture);
using (var fileMapping = FileMappingWrapper.CreateFromFile(path))
using (var compressedFile = File.Create(new FileInfo(path).FullName + ".gz"))
using (var compressor = new GZipStream(compressedFile, CompressionMode.Compress))
{
long offset = 0;
long length = new FileInfo(path).Length;
int bytesInBlock = (int)info.AllocationGranularity;
while (length > 0)
{
if (length < bytesInBlock)
{
bytesInBlock = (int)length;
}
using (var accessor = fileMapping.CreateViewAccessor(offset, bytesInBlock))
{
byte[] block = new byte[bytesInBlock];
accessor.ReadBytes(0, block, bytesInBlock);
compressor.Write(block, 0, bytesInBlock);
}
WriteMessageToUser("offset: {0}, length: {1}", offset, length);
offset += bytesInBlock;
length -= bytesInBlock;
}
}
WriteMessageToUser("{0} completed", args[0]);
Console.ReadLine();
}
public void CreateFromFile_FileMappingHandleIsValid()
{
// arrange
string path = @"../../Data/testdata.txt"; // source file;
// act
bool handleWasInitialized = false;
FileMappingWrapper hFileMapping;
using (hFileMapping = FileMappingWrapper.CreateFromFile(path))
{
if (hFileMapping.FileMappingHandle != null &&
!hFileMapping.FileMappingHandle.IsInvalid)
{
handleWasInitialized = true;
}
}
// assert
Assert.IsTrue(handleWasInitialized, "_01");
Assert.IsTrue(hFileMapping.FileMappingHandle != null, "_02");
Assert.IsTrue(hFileMapping.FileMappingHandle.IsInvalid, "_03");
}