avr-simulator 0.6.1

Oxidized interface for simavr
Documentation 
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use super::*;
use std::sync::atomic::{AtomicBool, Ordering};

static INITIALIZED: AtomicBool = AtomicBool::new(false);

/// Overwrites simavr's default logger so that it doesn't print stuff to stdout
/// and stderr.
pub fn init() {
    let just_initialized = INITIALIZED.compare_exchange(
        false,
        true,
        Ordering::SeqCst,
        Ordering::SeqCst,
    );

    if just_initialized.is_ok() {
        // Safety: Callback has correct signature (as proven by bindgen) and,
        // thanks to the `.compare_exchange()` above, we avoid data race with
        // other threads potentially also trying to initialize the logger
        unsafe {
            ffi::avr_global_logger_set(Some(on_message_logged));
        }
    }
}

#[cfg(target_os = "macos")]
unsafe extern "C" fn on_message_logged(
    _: *mut ffi::avr_t,
    _: i32,
    _: *const i8,
    _: *mut i8,
) {
    //
}

#[cfg(not(target_os = "macos"))]
unsafe extern "C" fn on_message_logged(
    _: *mut ffi::avr_t,
    _: i32,
    _: *const i8,
    _: *mut ffi::__va_list_tag,
) {
    //
}