static void Main()
{
var BreakSource = Enumerable.Range(0, 1000).ToList();
int BreakData = 0;
Console.WriteLine("Using loopstate Break Method");
Parallel.For(0, BreakSource.Count, (i, BreakLoopState) =>
{
BreakData += i;
if (BreakData > 100)
{
BreakLoopState.Break();
Console.WriteLine("Break called iteration {0}. data = {1} ", i, BreakData);
}
});
Console.WriteLine("Break called data = {0} ", BreakData);
var StopSource = Enumerable.Range(0, 1000).ToList();
int StopData = 0;
Console.WriteLine("Using loopstate Stop Method");
Parallel.For(0, StopSource.Count, (i, StopLoopState) =>
{
StopData += i;
if (StopData > 100)
{
StopLoopState.Stop();
Console.WriteLine("Stop called iteration {0}. data = {1} ", i, StopData);
}
});
Console.WriteLine("Stop called data = {0} ", StopData);
Console.ReadKey();
}
static void Main(string[] args)
{
DateTime StartDateTime = DateTime.Now;
Console.WriteLine(@"Parallel For Loop Execution start at : {0}", StartDateTime);
Parallel.For(0, 10, i => {
long total = DoSomeIndependentTask();
Console.WriteLine("{0} - {1}", i, total);
});
DateTime EndDateTime = DateTime.Now;
Console.WriteLine(@"Parallel For Loop Execution end at : {0}", EndDateTime);
TimeSpan span = EndDateTime - StartDateTime;
int ms = (int)span.TotalMilliseconds;
Console.WriteLine(@"Time Taken to Execute the Loop in miliseconds {0}", ms);
// Using the Degree of parallelism we can specify the maximum number of threads to be used to execute the program.
//Limiting the maximum degree of parallelism to 2
var options = new ParallelOptions()
{
MaxDegreeOfParallelism = 2
};
int n = 10;
Parallel.For(0, n, options, i =>
{
Console.WriteLine(@"value of i = {0}, thread = {1}",
i, Thread.CurrentThread.ManagedThreadId);
Thread.Sleep(10);
});
// use BreakLoopState to Break the Method BreakLoopState.Break();
var BreakSource = Enumerable.Range(0, 1000).ToList();
int BreakData = 0;
Console.WriteLine("Using loopstate Break Method");
Parallel.For(0, BreakSource.Count, (i, BreakLoopState) =>
{
BreakData += i;
if (BreakData > 100)
{
BreakLoopState.Break();
Console.WriteLine("Break called iteration {0}. data = {1} ", i, BreakData);
}
});
Console.WriteLine("Break called data = {0} ", BreakData);
Console.WriteLine("Press any key to exist");
Console.ReadLine();
}
public static void RunBreakingOutOfParallelForLoop()
{
var BreakSource = Enumerable.Range(0, 1000).ToList();
int BreakData = 0;
Console.WriteLine("Using loopstate Break Method");
Parallel.For(0, BreakSource.Count, (i, BreakLoopState) =>
{
BreakData += i;
if (BreakData > 100)
{
BreakLoopState.Break();
Console.WriteLine("Break called iteration {0}. data = {1} ", i, BreakData);
}
});
Console.WriteLine("Break called data = {0} ", BreakData);
var StopSource = Enumerable.Range(0, 1000).ToList();
int StopData = 0;
Console.WriteLine("Using loopstate Stop Method");
Parallel.For(0, StopSource.Count, (i, StopLoopState) =>
{
StopData += i;
if (StopData > 100)
{
StopLoopState.Stop();
Console.WriteLine("Stop called iteration {0}. data = {1} ", i, StopData);
}
});
Console.WriteLine("Stop called data = {0} ", StopData);
Console.ReadKey();
//In a Parallel.For or Parallel.ForEach loop, you cannot use the same break or Exit statement that is used in a sequential loop because those language constructs are valid for loops, and a parallel “loop” is actually a method, not a loop. Instead, you use either the Stop or Break method.
//Iterator will not instantly stop when reaches 100
}
