CLDS_SINGLY_LINKED_LIST_HANDLE clds_singly_linked_list_create()

in src/clds_singly_linked_list.c [249:278]

• 23 lines of code
• 3 McCabe index (conditional complexity)

CLDS_SINGLY_LINKED_LIST_HANDLE clds_singly_linked_list_create(CLDS_HAZARD_POINTERS_HANDLE clds_hazard_pointers)
{
    CLDS_SINGLY_LINKED_LIST_HANDLE clds_singly_linked_list;

    /* Codes_SRS_CLDS_SINGLY_LINKED_LIST_01_003: [ If clds_hazard_pointers is NULL, clds_singly_linked_list_create shall fail and return NULL. ]*/
    if (clds_hazard_pointers == NULL)
    {
        LogError("Invalid arguments: CLDS_HAZARD_POINTERS_HANDLE clds_hazard_pointers=%p", clds_hazard_pointers);
        clds_singly_linked_list = NULL;
    }
    else
    {
        /* Codes_SRS_CLDS_SINGLY_LINKED_LIST_01_001: [ clds_singly_linked_list_create shall create a new singly linked list object and on success it shall return a non-NULL handle to the newly created list. ]*/
        clds_singly_linked_list = malloc(sizeof(CLDS_SINGLY_LINKED_LIST));
        if (clds_singly_linked_list == NULL)
        {
            /* Codes_SRS_CLDS_SINGLY_LINKED_LIST_01_002: [ If any error happens, clds_singly_linked_list_create shall fail and return NULL. ]*/
            LogError("Cannot allocate memory for the singly linked list");
        }
        else
        {
            // all ok
            clds_singly_linked_list->clds_hazard_pointers = clds_hazard_pointers;

            (void)interlocked_exchange_pointer((void* volatile_atomic*)&clds_singly_linked_list->head, NULL);
        }
    }

    return clds_singly_linked_list;
}