io: io_set_alloc()

[ccan] / ccan / io / io.h

diff --git a/ccan/io/io.h b/ccan/io/io.h
index b5ffdd243bfd8a1710e551741261bb9159923cff..067a69c1dec441a752508dfe50ee8f83b8421466 100644 (file)
--- a/ccan/io/io.h
+++ b/ccan/io/io.h
@@ -490,4 +490,17 @@ struct io_plan io_close_cb(struct io_conn *, void *unused);
  *     io_loop();
  */
 void *io_loop(void);
+
+/**
+ * io_set_alloc - set alloc/realloc/free function for io to use.
+ * @allocfn: allocator function
+ * @reallocfn: reallocator function, ptr may be NULL, size never 0.
+ * @freefn: free function
+ *
+ * By default io uses malloc/realloc/free, and returns NULL if they fail.
+ * You can set your own variants here.
+ */
+void io_set_alloc(void *(*allocfn)(size_t size),
+                 void *(*reallocfn)(void *ptr, size_t size),
+                 void (*freefn)(void *ptr));
 #endif /* CCAN_IO_H */