Function alloc_mut

fn alloc_mut<T>(t: T) -> &'static mut T

Allocates a mutable reference to a value on a thread-local storage arena.

This function takes an input of any type T, allocates it on a thread-local arena, and returns a mutable reference with a static lifetime. It uses a thread-local storage mechanism provided by THR_ARENA to ensure that the allocated object resides in memory local to the thread, improving performance for concurrent processes. The allocation is done by casting the allocated value to a mutable raw pointer, and then converting it to a mutable reference with a static lifetime using unsafe operations. The use of unsafe indicates that it is the programmer’s responsibility to uphold the memory safety guarantees manually. This approach is typically employed when fine-grained control over memory allocation and lifetimes is necessary for performance-critical code.