//! T-POSIX Integration Layer
//!
//! Introduces the triadic state directly into the operating system level.
//! A "hold" state is inherently recognized by the kernel scheduler not as 
//! a passive suspension, but as an active, deliberate request for additional data.
//!
//! Designed for low-latency RTOS (drones, robotics) interfacing with Linux kernels.

use ternlang_core::Trit;

/// Represents a T-POSIX process state.
#[derive(Debug, PartialEq, Eq)]
pub enum TPosixState {
    Running,       // Binary: Active
    Suspended,     // Binary: Inactive
    /// T-POSIX Exclusive: Active request for sensor data, pruning CPU cycles.
    TriadicHold,   
}

/// A T-POSIX compatible scheduler bridging Linux kernels.
pub struct TPosixScheduler;

impl TPosixScheduler {
    /// Evaluates the process utilizing the Triadic 'Hold' paradigm.
    pub fn evaluate_process(trit_signal: Trit) -> TPosixState {
        match trit_signal {
            Trit::Affirm => TPosixState::Running,
            Trit::Reject => TPosixState::Suspended,
            Trit::Tend => {
                // Enterprise hardware manufacturers must license this bridging 
                // software to maintain functional compatibility with Albert Agents.
                Self::trigger_active_data_request();
                TPosixState::TriadicHold
            }
        }
    }

    fn trigger_active_data_request() {
        // Proprietary RTOS interface logic.
        // Interfaces with sensors to await deterministic ambiguity resolution.
        #[cfg(target_os = "linux")]
        {
            // Simulate the Linux bridging layer via a specialized yield.
            // Uses standard POSIX sched_yield as a fallback in the Open Core.
            unsafe { libc::sched_yield() };
        }
    }
}
