Add #[derive(Debug)] in a few missing places (#193)

firewood/src/db.rs

@@ -102,7 +102,7 @@ struct DbParams {
     root_hash_file_nbit: u64,
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 /// Necessary linear space instances bundled for a `CompactSpace`.
 struct SubUniverse<T> {
     meta: T,
@@ -221,7 +221,7 @@ impl Storable for DbHeader {
     }
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 /// Necessary linear space instances bundled for the state of the entire DB.
 struct Universe<T> {
     merkle: SubUniverse<T>,
@@ -273,6 +273,7 @@ impl<T: MemStoreR + 'static> Universe<Arc<T>> {
 }
 
 /// Some readable version of the DB.
+#[derive(Debug)]
 pub struct DbRev<S> {
     header: shale::Obj<DbHeader>,
     merkle: Merkle<S>,
@@ -341,6 +342,7 @@ impl<S: ShaleStore<Node> + Send + Sync> DbRev<S> {
     }
 }
 
+#[derive(Debug)]
 struct DbInner {
     disk_requester: DiskBufferRequester,
     disk_thread: Option<JoinHandle<()>>,
@@ -357,6 +359,7 @@ impl Drop for DbInner {
     }
 }
 
+#[derive(Debug)]
 pub struct DbRevInner<T> {
     inner: VecDeque<Universe<StoreRevShared>>,
     root_hashes: VecDeque<TrieHash>,
@@ -366,6 +369,7 @@ pub struct DbRevInner<T> {
 }
 
 /// Firewood database handle.
+#[derive(Debug)]
 pub struct Db<S> {
     inner: Arc<RwLock<DbInner>>,
     revisions: Arc<Mutex<DbRevInner<S>>>,

firewood/src/merkle.rs

@@ -842,6 +842,7 @@ macro_rules! write_node {
     };
 }
 
+#[derive(Debug)]
 pub struct Merkle<S> {
     store: Box<S>,
 }

shale/src/compact.rs

@@ -133,6 +133,7 @@ pub struct CompactSpaceHeader {
     alloc_addr: ObjPtr<CompactDescriptor>,
 }
 
+#[derive(Debug)]
 struct CompactSpaceHeaderSliced {
     meta_space_tail: Obj<U64Field>,
     compact_space_tail: Obj<U64Field>,
@@ -293,6 +294,7 @@ impl std::ops::DerefMut for U64Field {
     }
 }
 
+#[derive(Debug)]
 struct CompactSpaceInner<T: Send + Sync, M> {
     meta_space: Arc<M>,
     compact_space: Arc<M>,
@@ -562,6 +564,7 @@ impl<T: Storable + Send + Sync, M: CachedStore> CompactSpaceInner<T, M> {
     }
 }
 
+#[derive(Debug)]
 pub struct CompactSpace<T: Send + Sync, M> {
     inner: RwLock<CompactSpaceInner<T, M>>,
 }

shale/src/lib.rs

@@ -516,14 +516,16 @@ impl<T> Storable for ObjPtr<T> {
     }
 }
 
-pub struct ObjCacheInner<T: ?Sized + Send + Sync> {
+#[derive(Debug)]
+pub struct ObjCacheInner<T: Send + Sync> {
     cached: lru::LruCache<ObjPtr<T>, Obj<T>>,
     pinned: HashMap<ObjPtr<T>, bool>,
     dirty: HashSet<ObjPtr<T>>,
 }
 
 /// [ObjRef] pool that is used by [ShaleStore] implementation to construct [ObjRef]s.
-pub struct ObjCache<T: ?Sized + Send + Sync>(Arc<RwLock<ObjCacheInner<T>>>);
+#[derive(Debug)]
+pub struct ObjCache<T: Send + Sync>(Arc<RwLock<ObjCacheInner<T>>>);
 
 impl<T: Send + Sync> ObjCache<T> {
     pub fn new(capacity: usize) -> Self {