Function cbm_vmem_alloc

src/foundation/vmem.c:130–156

}

void *cbm_vmem_alloc(size_t size) {
    if (size == 0) {
        return NULL;
    }

    size_t alloc_size = round_to_page(size);

#ifdef _WIN32
    void *ptr = VirtualAlloc(NULL, alloc_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
#else
    void *ptr = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
    if (ptr == MAP_FAILED) {
        ptr = NULL;
    }
#endif

    if (!ptr) {
        cbm_log_error("vmem.alloc.fail", "size_mb", size > MB_DIVISOR ? "large" : "small");
        return NULL;
    }

    size_t new_total = atomic_fetch_add(&g_allocated, alloc_size) + alloc_size;
    update_peak(new_total);
    check_pressure(new_total);

    return ptr;
}

void cbm_vmem_free(void *ptr, size_t size) {
    if (!ptr || size == 0) {