c# - 如何在 C# 中将 byte[] 转换为 sbyte*？

Question

我有一个函数想要接收 sbyte* 缓冲区如何在 C# 中从头开始和从现有的 byte[] 创建这样的缓冲区？

Answer 1

// Allocate a new buffer (skip this if you already have one)
byte[] buffer = new byte[256];
unsafe
{
    // The "fixed" statement tells the runtime to keep the array in the same
    // place in memory (relocating it would make the pointer invalid)
    fixed (byte* ptr_byte = &buffer[0])
    {
        // Cast the pointer to sbyte*
        sbyte* ptr_sbyte = (sbyte*) ptr_byte;

        // Do your stuff here
    }

    // The end of the "fixed" block tells the runtime that the original array
    // is available for relocation and/or garbage collection again
}