Function hip_sigabrt_handler

cake-core/src/backends/rocm/mod.rs:28–37

SIGABRT handler: HIP runtime crashes in Monitor::tryLock during process exit because its atexit cleanup runs after threads are torn down. We catch the resulting abort and force a clean exit since all useful work is already done. Uses `exit_group` syscall directly for reliable process termination.

(_sig: libc::c_int)

///
/// Uses `exit_group` syscall directly for reliable process termination.
extern "C" fn hip_sigabrt_handler(_sig: libc::c_int) {
    if HIP_INITIALIZED.load(Ordering::Relaxed) {
        unsafe { libc::syscall(libc::SYS_exit_group, 0); }
    }
    // Not HIP-related — re-raise with default handler
    unsafe {
        libc::signal(libc::SIGABRT, libc::SIG_DFL);
        libc::raise(libc::SIGABRT);
    }
}

/// atexit handler: terminates process before HIP's broken atexit cleanup runs.
/// Registered after HIP init, so runs before HIP's handler (LIFO order).