Function alloc_tensor_range

external/ggml/src/ggml-alloc.c:1126–1165

}

static bool alloc_tensor_range(struct ggml_context * ctx,
        struct ggml_tensor * first, struct ggml_tensor * last,
        ggml_backend_buffer_type_t buft, size_t size,
        ggml_backend_buffer_t ** buffers, size_t * n_buffers) {

    ggml_backend_buffer_t buffer = ggml_backend_buft_alloc_buffer(buft, size);
    if (buffer == NULL) {
        GGML_LOG_ERROR("%s: failed to allocate %s buffer of size %zu\n", __func__, ggml_backend_buft_name(buft), size);
        free_buffers(buffers, n_buffers);
        return false;
    }

    *buffers = realloc(*buffers, sizeof(ggml_backend_buffer_t) * (*n_buffers + 1));
    (*buffers)[(*n_buffers)++] = buffer;

    struct ggml_tallocr tallocr = ggml_tallocr_new(buffer);

    for (struct ggml_tensor * t = first; t != last; t = ggml_get_next_tensor(ctx, t)) {
        enum ggml_status status = GGML_STATUS_SUCCESS;
        if (t->data == NULL) {
            if (t->view_src == NULL) {
                status = ggml_tallocr_alloc(&tallocr, t);
            } else if (t->buffer == NULL) {
                status = ggml_backend_view_init(t);
            }
        } else {
            if (t->view_src != NULL && t->buffer == NULL) {
                // view of a pre-allocated tensor
                status = ggml_backend_view_init(t);
            }
        }
        if (status != GGML_STATUS_SUCCESS) {
            GGML_LOG_ERROR("%s: failed to initialize tensor %s\n", __func__, t->name);
            free_buffers(buffers, n_buffers);
            return false;
        }
    }

    return true;
}

static ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft_impl(
        struct ggml_context * ctx, ggml_backend_buffer_type_t buft, size_t * nbytes_total, bool no_alloc) {