63 lines
2.4 KiB
C#
63 lines
2.4 KiB
C#
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/*
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* Copyright (c) 2018 Stanislav Denisov
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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using System;
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using System.Runtime.CompilerServices;
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namespace NetStack.Unsafe {
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#if NET_4_6 || NET_STANDARD_2_0
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public static class Memory {
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[MethodImpl(256)]
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public static unsafe void Copy(IntPtr source, int sourceOffset, byte[] destination, int destinationOffset, int length) {
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if (length > 0) {
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fixed (byte* destinationPointer = &destination[destinationOffset]) {
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byte* sourcePointer = (byte*)source + sourceOffset;
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Buffer.MemoryCopy(sourcePointer, destinationPointer, length, length);
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}
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}
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}
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[MethodImpl(256)]
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public static unsafe void Copy(byte[] source, int sourceOffset, IntPtr destination, int destinationOffset, int length) {
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if (length > 0) {
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fixed (byte* sourcePointer = &source[sourceOffset]) {
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byte* destinationPointer = (byte*)destination + destinationOffset;
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Buffer.MemoryCopy(sourcePointer, destinationPointer, length, length);
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}
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}
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}
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[MethodImpl(256)]
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public static unsafe void Copy(byte[] source, int sourceOffset, byte[] destination, int destinationOffset, int length) {
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if (length > 0) {
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fixed (byte* sourcePointer = &source[sourceOffset]) {
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fixed (byte* destinationPointer = &destination[destinationOffset]) {
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Buffer.MemoryCopy(sourcePointer, destinationPointer, length, length);
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}
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}
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}
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}
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}
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#endif
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}
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