//直接通过指针操作栈，调用add方法
//虚拟机内部方法间调用是通过这种方式
unsafe static void UnsafeCall()
{
IntPtr nativePointer = System.Runtime.InteropServices.Marshal.AllocHGlobal(sizeof(Value)
* VirtualMachine.MAX_EVALUATION_STACK_SIZE);
Value *evaluationStackPointer = (Value *)nativePointer.ToPointer();
object[] managedStack = new object[VirtualMachine.MAX_EVALUATION_STACK_SIZE];
int LOOPS = 10000000;
var virtualMachine = SimpleVirtualMachineBuilder.CreateVirtualMachine(LOOPS);
var sw = Stopwatch.StartNew();
for (int i = 0; i < LOOPS; i++)
{
evaluationStackPointer->Value1 = 10;
evaluationStackPointer->Type = IFix.Core.ValueType.Integer;
(evaluationStackPointer + 1)->Value1 = 20;
(evaluationStackPointer + 1)->Type = IFix.Core.ValueType.Integer;
virtualMachine.Execute(0, evaluationStackPointer, managedStack, evaluationStackPointer, 2);
}
Console.WriteLine("UnsafeCall " + " : " + (LOOPS / (int)sw.Elapsed.TotalMilliseconds * 1000) + "\r\n");
System.Runtime.InteropServices.Marshal.FreeHGlobal(nativePointer);
}
public void SimpleTest()
{
var virtualMachine = SimpleVirtualMachineBuilder.CreateVirtualMachine(1);
Call call = Call.Begin();
call.PushInt32(4);
call.PushInt32(6);
virtualMachine.Execute(0, ref call, 2);
Call.End(ref call);
Assert.AreEqual(10, call.GetInt32());
}
//基准测试，空方法调用
static void Base()
{
int LOOPS = 10000000;
var virtualMachine = SimpleVirtualMachineBuilder.CreateVirtualMachine(LOOPS);
for (int i = 0; i < 3; i++)
{
var sw = Stopwatch.StartNew();
Call call = Call.Begin();
virtualMachine.Execute(1, ref call, 0);
Call.End(ref call);
sw.Stop();
Console.WriteLine("Base " + i + " : " + (LOOPS / (int)sw.Elapsed.TotalMilliseconds * 1000) + "\r\n");
}
}
//通过Call对象调用add方法，该方法逻辑如下，SimpleVirtualMachineBuilder通过硬编码指令获得
//int add(int a, int b)
//{
// return a + b;
//}
//原生方法通过这种方式调用虚拟机方法
static void SafeCall()
{
int LOOPS = 10000000;
var virtualMachine = SimpleVirtualMachineBuilder.CreateVirtualMachine(LOOPS);
var sw = Stopwatch.StartNew();
for (int i = 0; i < LOOPS; i++)
{
Call call = Call.Begin();
call.PushInt32(4);
call.PushInt32(6);
virtualMachine.Execute(0, ref call, 2);
Call.End(ref call);
call.GetInt32();
}
Console.WriteLine("SafeCall " + " : " + (LOOPS / (int)sw.Elapsed.TotalMilliseconds * 1000) + "\r\n");
}