/// <summary>
/// The GApplication.ThreadFinished event fires each time a thread has finished processing.
/// </summary>
/// <param name="thread">The thread that finished.</param>
private void gridApp_ThreadFinish(GThread thread)
{
// Cast the GThread to our custom type so that we can access our custom properties.
CustomGThread customGThread = (CustomGThread)thread;
Console.WriteLine("Thread " + customGThread.Index + " finished");
// Add the output from the thread to our output array.
this._outputArray[customGThread.Index] = customGThread.Output;
}
void Run()
{
// All grid applications must have a GApplication instance. The GConnection information
// specifies the Manager's host name, the port to connect on, and the username and password
// to use. A GApplication is created with this connection information.
GConnection gridConnection = new GConnection("localhost", 9000, "user", "user");
GApplication gridApplication = new GApplication(gridConnection);
while (!File.Exists(this._inputFileName))
{
if (this._inputFileName != null)
{
Console.WriteLine("\nFile does not exist. Please try again.\n");
}
Console.WriteLine("Enter the input file name: ");
this._inputFileName = Console.ReadLine();
}
Console.WriteLine("Enter the output file name: ");
this._outputFileName = Console.ReadLine();
try
{
// Open the input file for reading.
StreamReader streamReader = new StreamReader(this._inputFileName);
int blockSize = 100;
char[] charBuffer = new char[blockSize];
string stringBuffer;
int currentBlock = 0;
// In order to ensure that all required DLLs to run the thread exist at each Executor
// we must add a dependency to the Manifest for each DLL and/or file needed by the GThreads.
gridApplication.Manifest.Add(new ModuleDependency(typeof(CustomGThread).Module));
// Loop through the file reading blocks of size blockSize into the char[] array charBuffer
// until we hit the end of the file.
while (streamReader.ReadBlock(charBuffer, 0, blockSize) != 0)
{
// ReadBlock returns a char[] buffer so convert it to a string to pass to our custom GThread.
stringBuffer = new string( charBuffer );
// Instantiate our custom GThread and pass the data we need to process through the constructor.
// Note: other methods of passing data to GThreads are possible.
CustomGThread customGThread = new CustomGThread(currentBlock, stringBuffer);
// Add the thread to the GApplication's Threads collection.
gridApplication.Threads.Add(customGThread);
currentBlock++;
}
// Close the input file.
streamReader.Close();
// Resize the output array to hold one entry per GThread.
this._outputArray = new string[currentBlock];
// Bind the ThreadFinished and ApplicationFinished events to local event handlers.
gridApplication.ThreadFinish += new GThreadFinish(gridApp_ThreadFinish);
gridApplication.ApplicationFinish += new GApplicationFinish(gridApp_ApplicationFinish);
// Start the GApplication.
gridApplication.Start();
Console.WriteLine("Application Started");
}
catch (Exception ex)
{
Console.WriteLine("An exception occurred: " + ex.Message + "\r\n" + ex.StackTrace);
}
}
