Add in some support for journal replay.

[bluesky.git] / bluesky / store.c

diff --git a/bluesky/store.c b/bluesky/store.c
index ae6bdb6..5cc475e 100644 (file)
--- a/bluesky/store.c
+++ b/bluesky/store.c
@@ -24,6 +24,8 @@ struct _BlueSkyStore {
     GMutex *lock;
     GCond *cond_idle;
     int pending;                /* Count of operations not yet complete. */
+
+    struct bluesky_stats *stats_get, *stats_put;
 };
 
 GHashTable *store_implementations;
@@ -71,6 +73,10 @@ BlueSkyStore *bluesky_store_new(const gchar *type)
     store->lock = g_mutex_new();
     store->cond_idle = g_cond_new();
     store->pending = 0;
+    store->stats_get = bluesky_stats_new(g_strdup_printf("Store[%s]: GETS",
+                                                         type));
+    store->stats_put = bluesky_stats_new(g_strdup_printf("Store[%s]: PUTS",
+                                                         type));
     g_free(scheme);
     return store;
 }
@@ -224,6 +230,14 @@ void bluesky_store_async_mark_complete(BlueSkyStoreAsync *async)
               "[%p] complete: elapsed = %"PRIi64" ns, latency = %"PRIi64" ns",
               async, elapsed, latency);
     }
+
+    if (async->data) {
+        if (async->op == STORE_OP_GET) {
+            bluesky_stats_add(async->store->stats_get, async->data->len);
+        } else if (async->op == STORE_OP_PUT) {
+            bluesky_stats_add(async->store->stats_put, async->data->len);
+        }
+    }
 }
 
 void bluesky_store_async_submit(BlueSkyStoreAsync *async)
@@ -278,13 +292,15 @@ void bluesky_store_add_barrier(BlueSkyStoreAsync *barrier,
     g_mutex_unlock(barrier->lock);
 
     g_mutex_lock(async->lock);
-    if (async->barrier == NULL) {
+    if (async->barrier == NULL && async->status != ASYNC_COMPLETE) {
         async->barrier = barrier;
+        g_mutex_unlock(async->lock);
     } else {
-        g_warning("Adding async to more than one barrier!\n");
+        if (async->barrier != NULL)
+            g_warning("Adding async to more than one barrier!\n");
+        g_mutex_unlock(async->lock);
         bluesky_store_async_add_notifier(async, op_complete, barrier);
     }
-    g_mutex_unlock(async->lock);
 }
 
 static void notifier_task(gpointer n, gpointer s)
@@ -485,6 +501,32 @@ static BlueSkyStoreImplementation filestore_impl = {
     .cleanup = filestore_cleanup,
 };
 
+/* A store implementation which simply discards all data, for testing. */
+static gpointer nullstore_create(const gchar *path)
+{
+    return (gpointer)nullstore_create;
+}
+
+static void nullstore_destroy(gpointer store)
+{
+}
+
+static void nullstore_submit(gpointer s, BlueSkyStoreAsync *async)
+{
+    bluesky_store_async_mark_complete(async);
+}
+
+static void nullstore_cleanup(gpointer store, BlueSkyStoreAsync *async)
+{
+}
+
+static BlueSkyStoreImplementation nullstore_impl = {
+    .create = nullstore_create,
+    .destroy = nullstore_destroy,
+    .submit = nullstore_submit,
+    .cleanup = nullstore_cleanup,
+};
+
 void bluesky_store_init()
 {
     store_implementations = g_hash_table_new(g_str_hash, g_str_equal);
@@ -492,4 +534,5 @@ void bluesky_store_init()
                                              bluesky_max_threads, FALSE, NULL);
     bluesky_store_register(&memstore_impl, "mem");
     bluesky_store_register(&filestore_impl, "file");
+    bluesky_store_register(&nullstore_impl, "null");
 }