public static void Main(string[] args)
{
// Don't use Stopwatch as it is not in mscorlib.dll
var startTime = DateTime.Now;
Console.WriteLine("Mode: {0}{1}", args.Length == 0 ? "StackAlloc" : "HeapAlloc",
args.Length == 0 ? " . To switch to HeapAlloc, simply pass an argument to this exe" : string.Empty);
Console.WriteLine("[before] GC gen0 collect: {0}", GC.CollectionCount(0));
Console.WriteLine("[before] GC gen1 collect: {0}", GC.CollectionCount(1));
Console.WriteLine("[before] GC gen2 collect: {0}", GC.CollectionCount(2));
var random = new Random(0);
int result = 0;
const int Count = 10000000;
if (args.Length > 0)
{
for (int i = 0; i < Count; i++)
{
// Alloc class on heap
var hello = new HelloClassOnStack(random);
result += hello.Compute(i);
}
}
else
{
for (int i = 0; i < Count; i++)
{
// Alloc class on stack
var hello = stackalloc HelloClassOnStack(random);
result += hello.Compute(i);
}
}
Console.WriteLine("Result: {0}", result);
Console.WriteLine("[after] GC gen0 collect: {0}", GC.CollectionCount(0));
Console.WriteLine("[after] GC gen1 collect: {0}", GC.CollectionCount(1));
Console.WriteLine("[after] GC gen2 collect: {0}", GC.CollectionCount(2));
Console.WriteLine("Elapsed: {0}ms", (DateTime.Now - startTime).TotalMilliseconds);
}
public static void Main(string[] args)
{
// Don't use Stopwatch as it is not in mscorlib.dll
var startTime = DateTime.Now;
Console.WriteLine("Mode: {0}{1}", args.Length == 0 ? "StackAlloc" : "HeapAlloc",
args.Length == 0 ? " . To switch to HeapAlloc, simply pass an argument to this exe" : string.Empty);
Console.WriteLine("[before] GC gen0 collect: {0}", GC.CollectionCount(0));
Console.WriteLine("[before] GC gen1 collect: {0}", GC.CollectionCount(1));
Console.WriteLine("[before] GC gen2 collect: {0}", GC.CollectionCount(2));
var random = new Random(0);
int result = 0;
const int Count = 10000000;
if (args.Length > 0)
{
for (int i = 0; i < Count; i++)
{
// Alloc class on heap
var hello = new HelloClassOnStack(random);
result += hello.Compute(i);
}
}
else
{
for (int i = 0; i < Count; i++)
{
// Alloc class on stack
var hello = stackalloc HelloClassOnStack(random);
result += hello.Compute(i);
}
}
Console.WriteLine("Result: {0}", result);
Console.WriteLine("[after] GC gen0 collect: {0}", GC.CollectionCount(0));
Console.WriteLine("[after] GC gen1 collect: {0}", GC.CollectionCount(1));
Console.WriteLine("[after] GC gen2 collect: {0}", GC.CollectionCount(2));
Console.WriteLine("Elapsed: {0}ms", (DateTime.Now - startTime).TotalMilliseconds);
}
