1 files changed, 37 insertions, 0 deletions
diff --git a/lib/resource.c b/lib/resource.c
index 9e626815..289af933 100644
--- a/lib/resource.c
+++ b/lib/resource.c
@@ -328,6 +328,42 @@ mb_allocz(pool *p, unsigned size)
 }
 
 /**
+ * mb_realloc - reallocate a memory block
+ * @p: pool
+ * @m: memory block
+ * @size: new size of the block
+ *
+ * mb_realloc() changes the size of the memory block @m to a given size.
+ * The contents will be unchanged to the minimum of the old and new sizes;
+ * newly allocated memory will be uninitialized. If @m is NULL, the call
+ * is equivalent to mb_alloc(@p, @size).
+ *
+ * Like mb_alloc(), mb_realloc() also returns a pointer to the memory
+ * chunk , not to the resource, hence you have to free it using
+ * mb_free(), not rfree().
+ */
+void *
+mb_realloc(pool *p, void *m, unsigned size)
+{
+  struct mblock *ob = NULL;
+
+  if (m)
+    {
+      ob = SKIP_BACK(struct mblock, data, m);
+      if (ob->r.n.next)
+	rem_node(&ob->r.n);
+    }
+
+  struct mblock *b = xrealloc(ob, sizeof(struct mblock) + size);
+
+  b->r.class = &mb_class;
+  add_tail(&p->inside, &b->r.n);
+  b->size = size;
+  return b->data;
+}
+
+
+/**
  * mb_free - free a memory block
  * @m: memory block
  *
@@ -339,3 +375,4 @@ mb_free(void *m)
   struct mblock *b = SKIP_BACK(struct mblock, data, m);
   rfree(b);
 }
+