private static void ToTextFile(OrderedSeq s, string fileName, int outputLen)
{
using (StreamWriter w = new StreamWriter(fileName))
{
using (ManualResetEvent mre = new ManualResetEvent(true))
{
bool flag = true;
WriteToFileParam[] parameters = new WriteToFileParam[2];
parameters[0] = new WriteToFileParam(outputLen, w, mre, 0);
parameters[1] = new WriteToFileParam(outputLen, w, mre, 1);
int currentParam = 0;
int[] buffer = parameters[currentParam].buffer;
int j = 0;
while (flag)
{
int fromPos = s.fromPos;
int finalToPos = s.toPos;
while (fromPos < finalToPos)
{
int sz = Math.Min(outputLen - j, finalToPos - fromPos);
int intermToPos = fromPos + sz;
for (int i = fromPos; i < intermToPos; i++)
{
buffer[j++] = s.data[i];
}
fromPos += sz;
if (j >= outputLen)
{
//write to file
WriteOnThread(parameters[currentParam]);
currentParam = (currentParam + 1) % 2;
buffer = parameters[currentParam].buffer;
j = 0;
}
}
flag = s.ReplaceWithRest();
}
if (j > 0)
{
//write to file
parameters[currentParam].len = j;
WriteOnThread(parameters[currentParam]);
}
mre.WaitOne();
parameters[0].w = null; parameters[0].mre = null;
parameters[1].w = null; parameters[1].mre = null;
}
w.Close();
}
}
private static void WriteOnThread(WriteToFileParam param)
{
param.mre.WaitOne();//wait for previous thread to complete
param.mre.Reset();
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadProcIntsToFile), param);
}
private static void IntsToFile(WriteToFileParam param)
{
StreamWriter w = param.w;
int[] data = param.buffer;
char[] charBuffer = param.charBuffer;
int len = param.len;
for (int i = 0; i < len; i++)
{
int j = IntToCharBuffer(data[i], charBuffer);
charBuffer[j++] = '\r';
charBuffer[j++] = '\n';
for (int k = 0; k < j; k++)
w.Write(charBuffer[k]);
}
}
