private static void RunInSerial()
{
for (int i = 0; i < Stocks.Count; i++)
{
Console.WriteLine("Serial processing stock: {0}", Stocks[i].Company);
StockService.CallService(Stocks[i]);
Console.WriteLine();
}
}
private static void RunInParallel()
{
Parallel.For(0, Stocks.Count, i =>
{
Console.WriteLine("Parallel processing stock: {0}", Stocks[i].Company);
StockService.CallService(Stocks[i]);
Console.WriteLine();
});
}
static void Main(string[] args)
{
double serialSeconds = 0;
double parallelSeconds = 0;
Stopwatch sw = new Stopwatch();
PopulateStockList();
sw = Stopwatch.StartNew();
RunInSerial();
serialSeconds = sw.Elapsed.TotalSeconds;
sw = Stopwatch.StartNew();
RunInParallel();
parallelSeconds = sw.Elapsed.TotalSeconds;
Console.WriteLine(
"Finished serial at {0} and took {1}", DateTime.Now, serialSeconds);
Console.WriteLine(
"Finished parallel at {0} and took {1}", DateTime.Now, parallelSeconds);
Console.ReadLine();
//Parallel options
ParallelOptions options = new ParallelOptions {
MaxDegreeOfParallelism = 2
};
Parallel.For(0, 100, options, x =>
{
//Do something
});
//Parallel for each
Parallel.ForEach(Stocks, stock =>
{
StockService.CallService(stock);
});
//Invoke example
Parallel.Invoke(() => StockService.CallService(Stocks[0]),
() => StockService.CallService(Stocks[1]),
() => StockService.CallService(Stocks[2])
);
//PLINQ Example
var query = from s in Stocks
let result = StockService.CallService(s)
select result;
var query2 = from s in Stocks.AsParallel()
let result = StockService.CallService(s)
select result;
var query3 = from s in Stocks.AsParallel().AsOrdered()
orderby s.Company
let company = s.Company
let result = StockService.CallService(s)
select result;
query3.ForAll(result => Console.WriteLine(result));
//as sequential
var query4 = from s in Stocks.AsParallel().AsSequential()
let result = StockService.CallService(s)
select result;
//select stock that doesnt exist to demonstrate aggregate exception
var query5 = from s in Stocks.AsParallel()
let result = StockService.CallService(Stocks[11])
select result;
try
{
query5.ForAll(result => Console.WriteLine(result.ToString()));
}
catch (AggregateException e)
{
foreach (var ex in e.InnerExceptions)
{
Console.WriteLine(ex.Message);
}
}
}
