在避免stackoverflow异常的同时使用stackalloc的任何方式

Question

In C# .NET, stackalloc keyword is very fascinating in order to avoid heap allocation. However, my concern is that using stackalloc might cause a stackoverflow exception. For the purpose of avoiding the exception, is there any good way to use stackalloc while avoiding stackoverflow exception? I originally came up with the following code, but I did not figure out how I should get the remaining stack size.

void Main()
{
    var remainingStackSize = //Get remaining stacksize somehow.

    var arraySize = 100;
    if (remainingStackSize > sizeof(byte) * arraySize) 
    {
        Span<byte> numbers = stackalloc byte[arraySize];
    }
    else 
    {
        Span<byte> numbers = new byte[arraySize];
    }
}

Answer 1

From the documentation :

The amount of memory available on the stack is limited. If you allocate too much memory on the stack, a StackOverflowException is thrown. To avoid that, follow the rules below:

Limit the amount of memory you allocate with stackalloc. Because the amount of memory available on the stack depends on the environment in which the code is executed, be conservative when you define the actual limit value.

Avoid using stackalloc inside loops. Allocate the memory block outside a loop and reuse it inside the loop.

See also How much stack usage is too much?