Add a free list to mempool.

1 files changed, 3 insertions, 3 deletions

diff --git a/mempool/include/mempool.h b/mempool/include/mempool.h
index 994e25a..b76ae7c 100644
--- a/mempool/include/mempool.h
+++ b/mempool/include/mempool.h
@@ -100,14 +100,14 @@
 // -----------------------------------------------------------------------------
 
 typedef struct BlockInfo {
-  bool used;
+  size_t next; /// For free blocks, points to the next free block.
+  bool   used;
 } BlockInfo;
 
 typedef struct mempool {
   size_t     block_size_bytes;
   size_t     num_blocks;
-  size_t     next_free_block;
-  bool       full;
+  size_t     head;    /// Points to the first block in the free list.
   bool       dynamic; /// True if blocks and info are dynamically-allocated.
   BlockInfo* block_info;
   uint8_t*   blocks;