public FileCheckerState(FileStream fStream, byte[] readArray, ManualResetEvent manualEvent, CheckBufferState state)
{
this.fStream = fStream;
this.readArray = readArray;
this.manualEvent = manualEvent;
this.state = state;
}
static void TaskEndReadCallback(IAsyncResult asyncResult)
{
FileCheckerState tempState = (FileCheckerState)asyncResult.AsyncState;
int readCount = tempState.FStream.EndRead(asyncResult);
if (readCount < tempState.State.Buffer.Length - tempState.State.Overlap)
{
Array.Clear(tempState.State.Buffer, (readCount + tempState.State.Overlap), tempState.State.Buffer.Length - (readCount + tempState.State.Overlap));
}
CheckBufferState state = tempState.State;
Task.Factory.StartNew((arg)
=>
{
try
{
CheckBufferState innerState = (CheckBufferState)arg;
MatchType matchType = MatchType.FullMatch;
CheckBuffer(state.Buffer, state.DiskFile, state.FileName, state.BlockSize, state.HashFull, ref matchType, state.Offset);
state.MatchType = matchType;
// Signal the main thread that the verification is finished.
tempState.ManualEvent.Set();
}
finally
{
//concurrencySemaphore.Release();
}
}, state);
//tempState.FStream.Close();
}
public FileCheckerState(FileStream fStream, byte[] readArray, ManualResetEvent manualEvent, CheckBufferState state)
{
this.fStream = fStream;
this.readArray = readArray;
this.manualEvent = manualEvent;
this.state = state;
}
// When BeginRead is finished reading data from the file, the
// EndReadCallback method is called to end the asynchronous
// read operation and then verify the data.
static void EndReadCallback(IAsyncResult asyncResult)
{
FileCheckerState tempState = (FileCheckerState)asyncResult.AsyncState;
int readCount = tempState.FStream.EndRead(asyncResult);
if (readCount < tempState.State.Buffer.Length - tempState.State.Overlap)
{
Array.Clear(tempState.State.Buffer, (readCount + tempState.State.Overlap), tempState.State.Buffer.Length - (readCount + tempState.State.Overlap));
}
CheckBufferState state = tempState.State;
MatchType matchType = MatchType.FullMatch;
CheckBuffer(state.Buffer, state.DiskFile, state.FileName, state.BlockSize, state.HashFull, ref matchType, state.Offset);
state.MatchType = matchType;
//tempState.FStream.Close();
// Signal the main thread that the verification is finished.
tempState.ManualEvent.Set();
}
public static void CheckFile_async(DiskFile diskFile, string filename, int blocksize, List <FileVerificationEntry> fileVerEntry, byte[] md5hash16k, byte[] md5hash, ref MatchType matchType, Dictionary <uint, FileVerificationEntry> hashfull, Dictionary <uint, FileVerificationEntry> hash, List <FileVerificationEntry> expectedList, ref int expectedIndex, bool multithreadCPU)
{
//int THRESHOLD = ((int)((50 * 1024 * 1024) / blocksize) * blocksize); // 50Mo threshold
int THRESHOLD = 5 * blocksize;
matchType = MatchType.FullMatch;
Console.WriteLine("Checking file '{0}'", Path.GetFileName(filename));
long filesize = new FileInfo(filename).Length;
if (filesize <= THRESHOLD)
{
using (BinaryReader br = new BinaryReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
CheckBuffer(br.ReadBytes((int)filesize), diskFile, filename, blocksize, hashfull, ref matchType, 0);
}
}
else
{
if (multithreadCPU)
{
List <Task> tasks = new List <Task>();
int buffer_size = THRESHOLD;
int overlap = 1 * blocksize; // part which will be check in double to avoid missing moving blocks
List <ManualResetEvent> list = new List <ManualResetEvent>();
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read, 1024, true))
{
int offset = 0;
byte[] buffer = new byte[buffer_size];
ManualResetEvent mre = new ManualResetEvent(false);
list.Add(mre);
CheckBufferState state = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(TaskEndReadCallback), new FileCheckerState(fs, buffer, mre, state));
//tasks.Add(Task.Factory.StartNew((arg)
// =>
//{
// try
// {
// object[] args = (object[])arg;
// byte[] b = (byte[])args[0];
// DiskFile df = (DiskFile)args[1];
// string f = (string)args[2];
// int bs = (int)args[3];
// Dictionary<uint, FileVerificationEntry> hf = (Dictionary<uint, FileVerificationEntry>)args[4];
// MatchType mt = (MatchType)args[5];
// int o = (int)args[6];
// CheckBuffer(b, df, f, bs, hf, ref mt, o);
// }
// finally
// {
// //concurrencySemaphore.Release();
// }
//}, new object[] { buffer, diskFile, filename, blocksize, hashfull, matchType, offset }));
while (fs.Position < fs.Length)
{
Buffer.BlockCopy(buffer, buffer.Length - overlap, buffer, 0, overlap);
ManualResetEvent mre2 = new ManualResetEvent(false);
list.Add(mre2);
CheckBufferState state2 = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
fs.BeginRead(buffer, overlap, buffer.Length - overlap, new AsyncCallback(TaskEndReadCallback), new FileCheckerState(fs, buffer, mre2, state2));
int nbRead = fs.Read(buffer, overlap, buffer.Length - overlap);
offset += buffer.Length - overlap;
//if (nbRead < buffer.Length - overlap)
// Array.Clear(buffer, (nbRead + overlap), buffer_size - (nbRead + overlap));
//tasks.Add(Task.Factory.StartNew((arg)
// =>
//{
// try
// {
// object[] args = (object[])arg;
// byte[] b = (byte[])args[0];
// DiskFile df = (DiskFile)args[1];
// string f = (string)args[2];
// int bs = (int)args[3];
// Dictionary<uint, FileVerificationEntry> hf = (Dictionary<uint, FileVerificationEntry>)args[4];
// MatchType mt = (MatchType)args[5];
// int o = (int)args[6];
// CheckBuffer(b, df, f, bs, hf, ref mt, o);
// }
// finally
// {
// //concurrencySemaphore.Release();
// }
//}, new object[] { (byte[])buffer.Clone(), diskFile, filename, blocksize, hashfull, matchType, offset }));
}
}
//long startWait = DateTime.Now.Ticks;
//Task.WaitAll(tasks.ToArray());
//long endWait = DateTime.Now.Ticks;
//double duration = ((double)(endWait - startWait)) / 10000;
//Console.WriteLine("Wait : {0}ms", duration);
WaitHandle.WaitAll(list.ToArray());
}
else
{
long startCheck = DateTime.Now.Ticks;
int buffer_size = THRESHOLD;
int overlap = 1 * blocksize; // part which will be check in double to avoid missing moving blocks
List <ManualResetEvent> list = new List <ManualResetEvent>();
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read, 2 * buffer_size, true))
{
int offset = 0;
byte[] buffer = new byte[buffer_size];
CheckBufferState state = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
ManualResetEvent mre = new ManualResetEvent(false);
list.Add(mre);
// Create a synchronization object that gets
// signaled when verification is complete.
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(EndReadCallback), new FileCheckerState(fs, buffer, mre, state));
//CheckBuffer(buffer, diskFile, filename, blocksize, hashfull, ref matchType, offset);
while (fs.Position < fs.Length)
{
Buffer.BlockCopy(buffer, buffer.Length - overlap, buffer, 0, overlap);
//int nbRead = fs.Read(buffer, overlap, buffer.Length - overlap);
CheckBufferState state2 = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
// Create a synchronization object that gets
// signaled when verification is complete.
ManualResetEvent mre2 = new ManualResetEvent(false);
list.Add(mre2);
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(EndReadCallback), new FileCheckerState(fs, buffer, mre2, state2));
offset += buffer_size;
//if (nbRead < buffer.Length - overlap)
// Array.Clear(buffer, (nbRead + overlap), buffer_size - (nbRead + overlap));
//CheckBuffer(buffer, diskFile, filename, blocksize, hashfull, ref matchType, offset);
}
WaitHandle.WaitAll(list.ToArray());
}
long endCheck = DateTime.Now.Ticks;
double duration = ((double)(endCheck - startCheck)) / 10000;
Console.WriteLine("Check : {0} ms", duration);
}
}
bool atLeastOne = false;
foreach (FileVerificationEntry entry in fileVerEntry)
{
if (entry.datablock.diskfile != null)
{
atLeastOne = true;
break;
}
}
if (!atLeastOne)
{
matchType = MatchType.NoMatch;
}
}
public static void CheckFile_async(DiskFile diskFile, string filename, int blocksize, List<FileVerificationEntry> fileVerEntry, byte[] md5hash16k, byte[] md5hash, ref MatchType matchType, Dictionary<uint,FileVerificationEntry> hashfull, Dictionary<uint,FileVerificationEntry> hash, List<FileVerificationEntry> expectedList, ref int expectedIndex, bool multithreadCPU)
{
//int THRESHOLD = ((int)((50 * 1024 * 1024) / blocksize) * blocksize); // 50Mo threshold
int THRESHOLD = 5 * blocksize;
matchType = MatchType.FullMatch;
Console.WriteLine("Checking file '{0}'", Path.GetFileName(filename));
long filesize = new FileInfo(filename).Length;
if (filesize <= THRESHOLD)
{
using (BinaryReader br = new BinaryReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
CheckBuffer(br.ReadBytes((int)filesize), diskFile, filename, blocksize, hashfull, ref matchType, 0);
}
}
else
{
if (multithreadCPU)
{
List<Task> tasks = new List<Task>();
int buffer_size = THRESHOLD;
int overlap = 1 * blocksize; // part which will be check in double to avoid missing moving blocks
List<ManualResetEvent> list = new List<ManualResetEvent>();
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read, 1024, true))
{
int offset = 0;
byte[] buffer = new byte[buffer_size];
ManualResetEvent mre = new ManualResetEvent(false);
list.Add(mre);
CheckBufferState state = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(TaskEndReadCallback), new FileCheckerState(fs, buffer, mre, state));
//tasks.Add(Task.Factory.StartNew((arg)
// =>
//{
// try
// {
// object[] args = (object[])arg;
// byte[] b = (byte[])args[0];
// DiskFile df = (DiskFile)args[1];
// string f = (string)args[2];
// int bs = (int)args[3];
// Dictionary<uint, FileVerificationEntry> hf = (Dictionary<uint, FileVerificationEntry>)args[4];
// MatchType mt = (MatchType)args[5];
// int o = (int)args[6];
// CheckBuffer(b, df, f, bs, hf, ref mt, o);
// }
// finally
// {
// //concurrencySemaphore.Release();
// }
//}, new object[] { buffer, diskFile, filename, blocksize, hashfull, matchType, offset }));
while (fs.Position < fs.Length)
{
Buffer.BlockCopy(buffer, buffer.Length - overlap, buffer, 0, overlap);
ManualResetEvent mre2 = new ManualResetEvent(false);
list.Add(mre2);
CheckBufferState state2 = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
fs.BeginRead(buffer, overlap, buffer.Length - overlap, new AsyncCallback(TaskEndReadCallback), new FileCheckerState(fs, buffer, mre2, state2));
int nbRead = fs.Read(buffer, overlap, buffer.Length - overlap);
offset += buffer.Length - overlap;
//if (nbRead < buffer.Length - overlap)
// Array.Clear(buffer, (nbRead + overlap), buffer_size - (nbRead + overlap));
//tasks.Add(Task.Factory.StartNew((arg)
// =>
//{
// try
// {
// object[] args = (object[])arg;
// byte[] b = (byte[])args[0];
// DiskFile df = (DiskFile)args[1];
// string f = (string)args[2];
// int bs = (int)args[3];
// Dictionary<uint, FileVerificationEntry> hf = (Dictionary<uint, FileVerificationEntry>)args[4];
// MatchType mt = (MatchType)args[5];
// int o = (int)args[6];
// CheckBuffer(b, df, f, bs, hf, ref mt, o);
// }
// finally
// {
// //concurrencySemaphore.Release();
// }
//}, new object[] { (byte[])buffer.Clone(), diskFile, filename, blocksize, hashfull, matchType, offset }));
}
}
//long startWait = DateTime.Now.Ticks;
//Task.WaitAll(tasks.ToArray());
//long endWait = DateTime.Now.Ticks;
//double duration = ((double)(endWait - startWait)) / 10000;
//Console.WriteLine("Wait : {0}ms", duration);
WaitHandle.WaitAll(list.ToArray());
}
else
{
long startCheck = DateTime.Now.Ticks;
int buffer_size = THRESHOLD;
int overlap = 1 * blocksize; // part which will be check in double to avoid missing moving blocks
List<ManualResetEvent> list = new List<ManualResetEvent>();
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read, 2 * buffer_size, true))
{
int offset = 0;
byte[] buffer = new byte[buffer_size];
CheckBufferState state = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
ManualResetEvent mre = new ManualResetEvent(false);
list.Add(mre);
// Create a synchronization object that gets
// signaled when verification is complete.
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(EndReadCallback), new FileCheckerState(fs, buffer, mre, state));
//CheckBuffer(buffer, diskFile, filename, blocksize, hashfull, ref matchType, offset);
while (fs.Position < fs.Length)
{
Buffer.BlockCopy(buffer, buffer.Length - overlap, buffer, 0, overlap);
//int nbRead = fs.Read(buffer, overlap, buffer.Length - overlap);
CheckBufferState state2 = new CheckBufferState(buffer, diskFile, filename, blocksize, hashfull, matchType, offset, overlap);
// Create a synchronization object that gets
// signaled when verification is complete.
ManualResetEvent mre2 = new ManualResetEvent(false);
list.Add(mre2);
fs.BeginRead(buffer, 0, buffer_size, new AsyncCallback(EndReadCallback), new FileCheckerState(fs, buffer, mre2, state2));
offset += buffer_size;
//if (nbRead < buffer.Length - overlap)
// Array.Clear(buffer, (nbRead + overlap), buffer_size - (nbRead + overlap));
//CheckBuffer(buffer, diskFile, filename, blocksize, hashfull, ref matchType, offset);
}
WaitHandle.WaitAll(list.ToArray());
}
long endCheck = DateTime.Now.Ticks;
double duration = ((double)(endCheck - startCheck)) / 10000;
Console.WriteLine("Check : {0} ms", duration);
}
}
bool atLeastOne = false;
foreach (FileVerificationEntry entry in fileVerEntry)
{
if (entry.datablock.diskfile != null)
{
atLeastOne = true;
break;
}
}
if (!atLeastOne)
matchType = MatchType.NoMatch;
}
