static void BlittableFunctionPointers()
{
Console.WriteLine($"Running {nameof(BlittableFunctionPointers)}...");
IntPtr mod = NativeLibrary.Load(NativeFunctions.GetFullPath());
const int a = 7;
const int expected = a * 2;
{
var cb = NativeLibrary.GetExport(mod, "DoubleInt").ToPointer();
Assert.Throws <NotImplementedException>(() => CallFunctionPointers.CallUnmanagedIntInt(cb, a));
}
{
var cb = NativeLibrary.GetExport(mod, "DoubleIntCdecl").ToPointer();
int b = CallFunctionPointers.CallUnmanagedCdeclIntInt(cb, a);
Assert.AreEqual(b, expected);
}
{
var cb = NativeLibrary.GetExport(mod, "DoubleIntStdcall").ToPointer();
int b = CallFunctionPointers.CallUnmanagedStdcallIntInt(cb, a);
Assert.AreEqual(b, expected);
}
}
static void BlittableFunctionPointers()
{
Console.WriteLine($"Running {nameof(BlittableFunctionPointers)}...");
IntPtr mod = NativeLibrary.Load(NativeFunctions.GetFullPath());
var cbDefault = NativeLibrary.GetExport(mod, "DoubleInt").ToPointer();
var cbCdecl = NativeLibrary.GetExport(mod, "DoubleIntCdecl").ToPointer();
var cbStdcall = NativeLibrary.GetExport(mod, "DoubleIntStdcall").ToPointer();
const int a = 7;
const int expected = a * 2;
{
// No modopt
Console.WriteLine($" -- unmanaged");
int b = CallFunctionPointers.CallUnmanagedIntInt(cbDefault, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged cdecl");
int b = CallFunctionPointers.CallUnmanagedCdeclIntInt(cbCdecl, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged stdcall");
int b = CallFunctionPointers.CallUnmanagedStdcallIntInt(cbStdcall, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged modopt(cdecl)");
int b = CallFunctionPointers.CallUnmanagedIntInt_ModOptCdecl(cbCdecl, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged modopt(stdcall)");
int b = CallFunctionPointers.CallUnmanagedIntInt_ModOptStdcall(cbStdcall, a);
Assert.Equal(expected, b);
}
{
// Value in modopt is not a recognized calling convention
Console.WriteLine($" -- unmanaged modopt unrecognized");
int b = CallFunctionPointers.CallUnmanagedIntInt_ModOptUnknown(cbDefault, a);
Assert.Equal(expected, b);
}
{
// Multiple modopts with calling conventions
Console.WriteLine($" -- unmanaged modopt(stdcall) modopt(cdecl)");
var ex = Assert.Throws <InvalidProgramException>(
() => CallFunctionPointers.CallUnmanagedIntInt_ModOptStdcall_ModOptCdecl(cbCdecl, a));
Assert.Equal("Multiple unmanaged calling conventions are specified. Only a single calling convention is supported.", ex.Message);
}
{
Console.WriteLine($" -- unmanaged modopt(stdcall) modopt(unrecognized)");
int b = CallFunctionPointers.CallUnmanagedIntInt_ModOptStdcall_ModOptUnknown(cbStdcall, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged cdecl modopt(stdcall)");
int b = CallFunctionPointers.CallUnmanagedCdeclIntInt_ModOptStdcall(cbCdecl, a);
Assert.Equal(expected, b);
}
{
Console.WriteLine($" -- unmanaged stdcall modopt(cdecl)");
int b = CallFunctionPointers.CallUnmanagedStdcallIntInt_ModOptCdecl(cbStdcall, a);
Assert.Equal(expected, b);
}
}