Function default_calloc

numpy/core/src/multiarray/alloc.c:376–393

The default data mem allocator calloc routine does not make use of a ctx. It should be called only through PyDataMem_UserNEW_ZEROED since itself does not handle eventhook and tracemalloc logic.

// It should be called only through PyDataMem_UserNEW_ZEROED
// since itself does not handle eventhook and tracemalloc logic.
static inline void *
default_calloc(void *NPY_UNUSED(ctx), size_t nelem, size_t elsize)
{
    void * p;
    size_t sz = nelem * elsize;
    NPY_BEGIN_THREADS_DEF;
    if (sz < NBUCKETS) {
        p = _npy_alloc_cache(sz, 1, NBUCKETS, datacache, &malloc);
        if (p) {
            memset(p, 0, sz);
        }
        return p;
    }
    NPY_BEGIN_THREADS;
    p = calloc(nelem, elsize);
    NPY_END_THREADS;
    return p;
}

// The default data mem allocator realloc routine does not make use of a ctx.
// It should be called only through PyDataMem_UserRENEW