private static void PrintTrade(Trade t)
{
Console.WriteLine("{0}: {1}/{2}", t.DateTime, t.Price, t.Size);
}
static unsafe void Main(string[] args)
{
Console.WriteLine("Create a class, copy it to an unamanaged class copy, print both:");
var fooBar = new Trade { DateTime = DateTime.Now, Price = 1435.25, Size = 100 };
var fooBarNative = BluePill<Trade>.CreateUnmanaged();
fooBarNative.DateTime = fooBar.DateTime;
fooBarNative.Price = fooBar.Price;
fooBarNative.Size = fooBar.Size;
PrintTrade(fooBar);
PrintTrade(fooBarNative);
TestBluePillWithGC(fooBarNative);
Console.WriteLine("Roundtrip pointer:");
Trade roundTrip = BluePill<Trade>.FromPointer(BluePill<Trade>.ToPointerUnstable(fooBar));
PrintTrade(roundTrip);
Console.WriteLine("Same, but with automatic properties");
var fooBar2 = new Trade2 { DateTime = DateTime.Now, Price = 1435.25, Size = 100 };
var fooBarNative2 = BluePill<Trade2>.CreateUnmanaged();
fooBarNative2.DateTime = fooBar2.DateTime;
fooBarNative2.Price = fooBar2.Price;
fooBarNative2.Size = fooBar2.Size;
PrintTrade(fooBar2);
PrintTrade(fooBarNative2);
Console.WriteLine("Create and initialize an unmanaged array, convert it to a managed array:");
var magic = BluePill<int[]>.CreateUnmanagedPrimitiveArray(30);
for (var i = 0; i < 30; i++)
magic[i] = i;
Console.WriteLine("The array's .Length is: {0}", magic.Length);
Console.WriteLine("The array's elements are:");
foreach (var t in magic)
Console.Write("{0},", t);
Console.WriteLine();
Console.WriteLine("Create and initialize an unmanaged array of classes");
var unamangeTradeArray = BluePill<Trade>.CreateUnmanagedClassArray(100);
var rnd = new Random(666);
foreach (var t in BluePill<Trade>.AsEnumerable(unamangeTradeArray, 100)) {
t.Price = 1000 + rnd.Next() % 500 / 4.0;
t.Size = rnd.Next() % 100;
t.DateTime = DateTime.Now;
}
Console.WriteLine("Treat the unmanaged memory as an IEnumerable<T>, print contents:");
foreach (var t in BluePill<Trade>.AsEnumerable(unamangeTradeArray, 100))
PrintTrade(t);
Console.WriteLine("Treat the unmanaged memory as an IList<T>, print contents:");
var list = BluePill<Trade>.AsList(unamangeTradeArray, 100);
for (var i = 0; i < 100; i++)
PrintTrade(list[i]);
var mapExists = File.Exists("xxx.mmap");
var a = new StupidMemMapAllocator("xxx.mmap", 1024*1024, 0, 1024*1024);
var p = a.Allocate(1024 * 1024);
if (!mapExists) {
Console.WriteLine("Writing 1024 classes to xxx.mmap");
foreach (var t in BluePill<Trade>.AsEnumerable((void*)p, 1024))
{
t.Price = 1000 + rnd.Next() % 500 / 4.0;
t.Size = rnd.Next() % 100;
t.DateTime = DateTime.Now;
}
} else {
Console.WriteLine("Accessing previously stored 1024 classes from xxx.mmap");
foreach (var t in BluePill<Trade>.AsEnumerable((void*)p, 1024))
PrintTrade(t);
}
}
private static void TestBluePillWithGC(Trade t)
{
Console.WriteLine("{0}: {1}/{2}", t.DateTime, t.Price, t.Size);
GC.Collect();
Console.WriteLine("{0}: {1}/{2}", t.DateTime, t.Price, t.Size);
Console.WriteLine("Survived GC");
}