+pa_memchunk* pa_memchunk_reset(pa_memchunk *c);
+
+/* Map a memory chunk back into memory if it was swapped out */
+pa_memchunk *pa_memchunk_will_need(const pa_memchunk *c);
+
+/* Copy the data in the src memchunk to the dst memchunk */
+pa_memchunk* pa_memchunk_memcpy(pa_memchunk *dst, pa_memchunk *src);
+
+/* Return true if any field is set != 0 */
+bool pa_memchunk_isset(pa_memchunk *c);