ax-percpu-macros 0.4.12

Macros to define and access a per-CPU data structure
Documentation 
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use quote::quote;
use syn::{Ident, Type};

/// Generates the byte offset of one symbol from the per-CPU template header.
pub fn gen_offset(symbol: &Ident) -> proc_macro2::TokenStream {
    quote! {
        ax_percpu::__priv::symbol_offset(::core::ptr::addr_of!(#symbol).cast::<u8>() as usize)
    }
}

/// Generates a pointer through an explicit current-CPU pin.
pub fn gen_current_ptr_pinned(symbol: &Ident, pin: &Ident, ty: &Type) -> proc_macro2::TokenStream {
    let offset = gen_offset(symbol);
    quote! {
        ax_percpu::__priv::current_symbol_ptr::<#ty>(#pin, #offset)
    }
}

/// Generates a typed remote pointer through an explicit area descriptor.
pub fn gen_remote_ptr(symbol: &Ident, area: &Ident, ty: &Type) -> proc_macro2::TokenStream {
    let offset = gen_offset(symbol);
    quote! {
        ax_percpu::__priv::remote_symbol_ptr::<#ty>(#area, #offset)
    }
}