// unified_batch_box.c - Box U2: Batch Alloc Connector Implementation
#include "unified_batch_box.h"
#include "carve_push_box.h"
#include "../box/tls_sll_box.h"
#include <stddef.h>

// Batch allocate blocks from SuperSlab
// Returns: Actual count allocated (0 = failed)
int superslab_batch_alloc(int class_idx, void** blocks, int max_count) {
    if (!blocks || max_count <= 0) return 0;

    // Step 1: Carve N blocks from SuperSlab and push to TLS SLL
    //         (uses existing Box C1 carve_push logic)
    uint32_t carved = box_carve_and_push_with_freelist(class_idx, (uint32_t)max_count);
    if (carved == 0) return 0;

    // Step 2: Pop carved blocks from TLS SLL into output array
    int got = 0;
    for (uint32_t i = 0; i < carved; i++) {
        void* base;
        if (!tls_sll_pop(class_idx, &base)) break;  // Should not happen
        blocks[got++] = base;
    }

    return got;
}