/// <summary>
/// Ensure <see cref="MemoryCopy"/> functionality.
/// </summary>
private static void EnsureMemoryCopy()
{
if (MemoryCopyPointer == null)
{
IntPtr memoryCopyPtr;
switch (Environment.OSVersion.Platform)
{
case PlatformID.Win32Windows:
case PlatformID.Win32NT:
case PlatformID.Win32S:
memoryCopyPtr = GetProcAddress.GetProcAddressOS.GetProcAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
case PlatformID.Unix:
memoryCopyPtr = GetProcAddress.GetProcAddressOS.GetProcAddress("libc.so.6", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
default:
throw new NotSupportedException("no suitable memcpy support");
}
}
}
/// <summary>
/// Ensure <see cref="MemoryCopy"/> functionality.
/// </summary>
private static void EnsureMemoryCopy()
{
if (MemoryCopyPointer == null)
{
IntPtr memoryCopyPtr;
switch (Platform.CurrentPlatformId)
{
case Platform.Id.WindowsNT:
memoryCopyPtr = GetProcAddress.GetProcAddressOS.GetProcAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
case Platform.Id.Linux:
memoryCopyPtr = GetProcAddress.GetProcAddressOS.GetProcAddress("libc.so.6", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
default:
throw new NotSupportedException("no suitable memcpy support");
}
}
}
static ByteUtil()
{
var dynamicMethod = new DynamicMethod
(
"MemoryCopy",
typeof(void),
new[] { typeof(void *), typeof(void *), typeof(uint) },
typeof(ByteUtil)
);
var ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Ldarg_2);
ilGenerator.Emit(OpCodes.Cpblk);
ilGenerator.Emit(OpCodes.Ret);
MemoryCopy = (MemoryCopyDelegate)dynamicMethod.CreateDelegate(typeof(MemoryCopyDelegate));
}
static ByteUtil()
{
var dynamicMethod = new DynamicMethod
(
"MemoryCopy",
typeof(void),
new[] { typeof(void*), typeof(void*), typeof(uint) },
typeof(ByteUtil)
);
var ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Ldarg_2);
ilGenerator.Emit(OpCodes.Cpblk);
ilGenerator.Emit(OpCodes.Ret);
MemoryCopy = (MemoryCopyDelegate)dynamicMethod.CreateDelegate(typeof(MemoryCopyDelegate));
}
/// <summary>
/// Ensure <see cref="MemoryCopy"/> functionality.
/// </summary>
private static void EnsureMemoryCopy()
{
if (MemoryCopyPointer == null) {
IntPtr memoryCopyPtr;
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32Windows:
case PlatformID.Win32NT:
case PlatformID.Win32S:
memoryCopyPtr = GetProcAddress.GetAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero) {
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
case PlatformID.Unix:
memoryCopyPtr = GetProcAddress.GetAddress("libc.so.6", "memcpy");
if (memoryCopyPtr != IntPtr.Zero) {
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
default:
throw new NotSupportedException("no suitable memcpy support");
}
}
}
