gre_io_serialized_data_t* gre_io_size_buffer( gre_io_serialized_data_t * buffer, int nbytes )
This function ensures that the specified buffer has enough internal storage capacity for a payload of nbytes size. If the buffer is NULL or the existing capacity is not large enough then a new memory buffer will be assigned to the buffer object.
Data parameters must be sent in order of descending alignment requirements. Example: 4u1 4u1 2u1 1s0 is good, 2u1 4u1 4u1 1s0 is not
Parameters: buffer The buffer to be sized, or NULL to allocate a new buffer nbytes The number of bytes this buffer should be able to support Returns: layer_name A buffer with room for a message nbytes in size or NULL if the space could not be allocated