fmi_sys/fmi2/
logger.rs

1use crate::fmi2 as binding;
2
3/// This function gets called from logger.c
4#[unsafe(no_mangle)]
5extern "C" fn callback_log(
6    _component_environment: binding::fmi2ComponentEnvironment,
7    instance_name: binding::fmi2String,
8    status: binding::fmi2Status,
9    category: binding::fmi2String,
10    message: binding::fmi2String,
11) {
12    let instance_name = unsafe { std::ffi::CStr::from_ptr(instance_name) }
13        .to_str()
14        .unwrap_or("NULL");
15
16    let level = match status {
17        binding::fmi2Status_fmi2OK => log::Level::Info,
18        binding::fmi2Status_fmi2Warning => log::Level::Warn,
19        binding::fmi2Status_fmi2Pending => unreachable!("Pending status is not allowed in logger"),
20        binding::fmi2Status_fmi2Discard => log::Level::Trace,
21        binding::fmi2Status_fmi2Error => log::Level::Error,
22        binding::fmi2Status_fmi2Fatal => log::Level::Error,
23        _ => unreachable!("Invalid status"),
24    };
25
26    let _category = unsafe { std::ffi::CStr::from_ptr(category) }
27        .to_str()
28        .unwrap_or("NULL");
29
30    let message = unsafe { std::ffi::CStr::from_ptr(message) }
31        .to_str()
32        .unwrap_or("NULL");
33
34    log::logger().log(
35        &log::Record::builder()
36            .args(format_args!("{}", message))
37            .level(level)
38            .module_path(Some("logger"))
39            .target(instance_name)
40            .build(),
41    );
42}
43
44#[link(name = "logger", kind = "static")]
45unsafe extern "C" {
46    /// This function is implemented in logger.c
47    /// Note: This can be re-implemented in pure Rust once the `c_variadics` feature stabilizes.
48    /// See: <https://doc.rust-lang.org/beta/unstable-book/language-features/c-variadic.html>
49    pub fn callback_logger_handler(
50        componentEnvironment: binding::fmi2ComponentEnvironment,
51        instanceName: binding::fmi2String,
52        status: binding::fmi2Status,
53        category: binding::fmi2String,
54        message: binding::fmi2String,
55        ...
56    );
57}
fmi_sys/fmi2/logger.rs

fmi_sys/fmi2/
logger.rs
