// tiny_ready_bg.h - Ready Aggregator (background/best-effort)
#pragma once
#include <stdint.h>
#include <stdatomic.h>
#include "tiny_ready.h"
#include "box/mailbox_box.h"
#include "hakmem_tiny_superslab.h"

// Periodic, best-effort aggregator:
// - Peeks mailbox (non-destructive) and pushes one candidate into Ready
// - Optional: could peek registry in future, but keep it lightweight here
static inline void tiny_ready_bg_aggregate_step(int class_idx, int mail_budget) {
    if (!tiny_ready_enabled()) return;
    if (mail_budget <= 0) mail_budget = 1;
    for (int n = 0; n < mail_budget; n++) {
        uintptr_t ent = mailbox_box_peek_one(class_idx);
        if (!ent) break;
        SuperSlab* ss = slab_entry_ss(ent);
        int slab_idx = slab_entry_idx(ent);
        if (!(ss && ss->magic == SUPERSLAB_MAGIC)) continue;
        if (slab_idx < 0 || slab_idx >= ss_slabs_capacity(ss)) continue;
        tiny_ready_push(class_idx, ss, slab_idx);
        break; // push only one hint per step by default
    }
}