Add general statistics-gathering infrastructure.

[bluesky.git] / bluesky / debug.c

diff --git a/bluesky/debug.c b/bluesky/debug.c
index 7cdd4fd..b409c74 100644 (file)
--- a/bluesky/debug.c
+++ b/bluesky/debug.c
@@ -59,3 +59,34 @@ void bluesky_debug_dump(BlueSkyFS *fs)
 
     g_hash_table_foreach(fs->inodes, inode_dump, fs);
 }
+
+/* Statistics counters: for operation counts, bytes transferred, etc. */
+static GStaticMutex stats_lock = G_STATIC_MUTEX_INIT;
+static GList *stats_list = NULL;
+
+struct bluesky_stats *bluesky_stats_new(const char *name)
+{
+    struct bluesky_stats *stats = g_new0(struct bluesky_stats, 1);
+    stats->name = name;
+    g_static_mutex_lock(&stats_lock);
+    stats_list = g_list_append(stats_list, stats);
+    g_static_mutex_unlock(&stats_lock);
+    return stats;
+}
+
+void bluesky_stats_add(struct bluesky_stats *stats, int64_t value)
+{
+    __sync_fetch_and_add(&stats->count, (int64_t)1);
+    __sync_fetch_and_add(&stats->sum, value);
+}
+
+void bluesky_stats_dump_all()
+{
+    g_static_mutex_lock(&stats_lock);
+    for (GList *item = stats_list; item != NULL; item = item->next) {
+        struct bluesky_stats *stats = (struct bluesky_stats *)item->data;
+        g_print("%s: count=%"PRIi64" sum=%"PRIi64"\n",
+                stats->name, stats->count, stats->sum);
+    }
+    g_static_mutex_unlock(&stats_lock);
+}