luaur-code-gen 0.1.3

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::type_aliases::perf_log_fn::PerfLogFn;
use core::cell::UnsafeCell;
use core::ffi::c_void;

// Wrapper to permit Sync on UnsafeCell for native-only global state
#[repr(transparent)]
struct SyncCell<T: Copy>(UnsafeCell<T>);

// SAFETY: native-only code, caller must ensure no data races
unsafe impl<T: Copy> Sync for SyncCell<T> {}

impl<T: Copy> SyncCell<T> {
    const fn new(val: T) -> Self {
        Self(UnsafeCell::new(val))
    }
}

pub(crate) static G_PERF_LOG_CONTEXT: SyncCell<*mut c_void> = SyncCell::new(core::ptr::null_mut());
pub(crate) static G_PERF_LOG_FN: SyncCell<PerfLogFn> = SyncCell::new(None);

pub fn set_perf_log(context: *mut c_void, log_fn: PerfLogFn) {
    // SAFETY: native-only context, called before concurrent reads
    unsafe {
        *G_PERF_LOG_CONTEXT.0.get() = context;
        *G_PERF_LOG_FN.0.get() = log_fn;
    }
}