--- /dev/null
+/******************************************************************************/
+#ifdef JEMALLOC_H_TYPES
+
+typedef struct extent_node_s extent_node_t;
+
+#endif /* JEMALLOC_H_TYPES */
+/******************************************************************************/
+#ifdef JEMALLOC_H_STRUCTS
+
+/* Tree of extents. */
+struct extent_node_s {
+#if (defined(JEMALLOC_SWAP) || defined(JEMALLOC_DSS))
+ /* Linkage for the size/address-ordered tree. */
+ rb_node(extent_node_t) link_szad;
+#endif
+
+ /* Linkage for the address-ordered tree. */
+ rb_node(extent_node_t) link_ad;
+
+#ifdef JEMALLOC_PROF
+ /* Profile counters, used for huge objects. */
+ prof_ctx_t *prof_ctx;
+#endif
+
+ /* Pointer to the extent that this tree node is responsible for. */
+ void *addr;
+
+ /* Total region size. */
+ size_t size;
+};
+typedef rb_tree(extent_node_t) extent_tree_t;
+
+#endif /* JEMALLOC_H_STRUCTS */
+/******************************************************************************/
+#ifdef JEMALLOC_H_EXTERNS
+
+#if (defined(JEMALLOC_SWAP) || defined(JEMALLOC_DSS))
+rb_proto(, extent_tree_szad_, extent_tree_t, extent_node_t)
+#endif
+
+rb_proto(, extent_tree_ad_, extent_tree_t, extent_node_t)
+
+#endif /* JEMALLOC_H_EXTERNS */
+/******************************************************************************/
+#ifdef JEMALLOC_H_INLINES
+
+#endif /* JEMALLOC_H_INLINES */
+/******************************************************************************/
+