1 files changed, 6 insertions, 0 deletions

diff --git a/memstack/include/memstack.h b/memstack/include/memstack.h
index 97a9d12..93cd2e6 100644
--- a/memstack/include/memstack.h
+++ b/memstack/include/memstack.h
@@ -32,6 +32,12 @@ void memstack_del(memstack*);
 /// Clear the stack.
 void memstack_clear(memstack*);
 
+/// Return the top of the stack.
+size_t memstack_watermark(const memstack*);
+
+/// Set the top of the stack.
+void memstack_set_watermark(memstack*, size_t watermark);
+
 /// Allocate a new block.
 ///
 /// Return null if the block does not fit in the remaining memory.