//! # smarm — Silly Marks Abstract Rust Machine
//!
//! Erlang-style green-thread actor concurrency for Rust.
//!
//! Multi-threaded: N scheduler OS threads (default: one per CPU) share a
//! single global run queue behind a `Mutex`. Actors communicate by sending
//! `Send` messages over channels; every actor has a supervisor. Synchronisation
//! primitives — `Mutex<T>` with mandatory lock timeouts, channel `recv`,
//! `sleep`, and epoll-backed `wait_readable`/`wait_writable` — all park the
//! green thread, never the OS thread.
//!
//! See `LOOM.md` for the design intent and the deferred-for-later list.

pub mod stack;
pub mod context;
pub mod preempt;
pub mod pid;
pub mod actor;
pub mod channel;
pub mod scheduler;
pub mod supervisor;
pub mod timer;
pub mod io;
pub mod mutex;
pub mod monitor;
pub mod registry;
pub mod link;
pub mod gen_server;
pub mod runtime;
pub(crate) mod raw_mutex;
pub(crate) mod slot_state;
pub(crate) mod sync_shim;
#[doc(hidden)] // pub only so benches/rq_micro.rs can drive the raw structures
pub mod run_queue;
pub mod trace;

// ---------------------------------------------------------------------------
// Global allocator
// ---------------------------------------------------------------------------

#[global_allocator]
static ALLOCATOR: preempt::PreemptingAllocator = preempt::PreemptingAllocator;

// ---------------------------------------------------------------------------
// Public API re-exports
// ---------------------------------------------------------------------------

pub use channel::{
    channel, select, select_timeout, try_select, try_select_timeout, Receiver, RecvError,
    RecvTimeoutError, Selectable, Sender,
};
pub use gen_server::{CallError, CallTimeoutError, CastError, GenServer, ServerBuilder, ServerCtx, ServerRef, Watcher};
pub use link::{link, trap_exit, unlink, ExitSignal};
pub use monitor::{demonitor, monitor, Down, DownReason, Monitor, MonitorId};
pub use mutex::{LockTimeout, Mutex, MutexGuard};
pub use pid::Pid;
pub use registry::{name_of, register, unregister, whereis, RegisterError};
pub use runtime::{init, Config, Runtime};
pub use scheduler::{
    block_on_io, request_stop, run, self_pid, sleep, spawn, spawn_under, wait_readable,
    wait_readable_timeout, wait_writable, wait_writable_timeout, yield_now, FdArm, JoinError,
    JoinHandle,
};
pub use supervisor::{ChildSpec, OneForOne, Restart, Signal, Strategy};

// ---------------------------------------------------------------------------
// check!()
// ---------------------------------------------------------------------------

/// Voluntarily check whether this actor's timeslice has expired, yielding
/// if so.
#[macro_export]
macro_rules! check {
    () => {
        $crate::preempt::maybe_preempt()
    };
}