+BlueSkyStoreAsync *bluesky_store_async_new(BlueSkyStore *store)
+{
+ BlueSkyStoreAsync *async;
+
+ async = g_new(BlueSkyStoreAsync, 1);
+ async->store = store;
+ async->lock = g_mutex_new();
+ async->completion_cond = g_cond_new();
+ async->refcount = 1;
+ async->status = ASYNC_NEW;
+ async->op = STORE_OP_NONE;
+ async->key = NULL;
+ async->data = NULL;
+ async->result = -1;
+ async->store_private = NULL;
+
+ return async;
+}
+
+void bluesky_store_async_ref(BlueSkyStoreAsync *async)
+{
+ if (async == NULL)
+ return;
+
+ g_atomic_int_inc(&async->refcount);
+}
+
+void bluesky_store_async_unref(BlueSkyStoreAsync *async)
+{
+ if (async == NULL)
+ return;
+
+ if (g_atomic_int_dec_and_test(&async->refcount)) {
+ async->store->impl->cleanup(async->store->handle, async);
+ g_mutex_free(async->lock);
+ g_cond_free(async->completion_cond);
+ g_free(async->key);
+ bluesky_string_unref(async->data);
+ g_free(async);
+ g_print("Freed async\n");
+ }
+}
+
+/* Block until the given operation has completed. */
+void bluesky_store_async_wait(BlueSkyStoreAsync *async)
+{
+ g_return_if_fail(async != NULL);
+ g_mutex_lock(async->lock);
+
+ if (async->status == ASYNC_NEW) {
+ g_error("bluesky_store_async_wait on a new async object!\n");
+ g_mutex_unlock(async->lock);
+ return;
+ }
+
+ while (async->status != ASYNC_COMPLETE) {
+ g_cond_wait(async->completion_cond, async->lock);
+ }
+
+ g_mutex_unlock(async->lock);
+}
+
+/* Mark an asynchronous operation as complete. This should only be called by
+ * the store implementations. The lock must be held when calling this
+ * function. */
+void bluesky_store_async_mark_complete(BlueSkyStoreAsync *async)
+{
+ if (async->status != ASYNC_COMPLETE) {
+ g_mutex_lock(async->store->lock);
+ async->store->pending--;
+ if (async->store->pending == 0)
+ g_cond_broadcast(async->store->cond_idle);
+ g_mutex_unlock(async->store->lock);
+ }
+
+ async->status = ASYNC_COMPLETE;
+ g_cond_broadcast(async->completion_cond);
+}
+
+void bluesky_store_async_submit(BlueSkyStoreAsync *async)
+{
+ BlueSkyStore *store = async->store;
+
+ g_mutex_lock(async->store->lock);
+ async->store->pending++;
+ g_mutex_unlock(async->store->lock);
+
+ store->impl->submit(store->handle, async);
+
+ if (bluesky_options.synchronous_stores)
+ bluesky_store_async_wait(async);
+}
+
+void bluesky_store_sync(BlueSkyStore *store)
+{
+ g_mutex_lock(store->lock);
+ g_print("Waiting for pending store operations to complete...\n");
+ while (store->pending > 0) {
+ g_cond_wait(store->cond_idle, store->lock);
+ }
+ g_mutex_unlock(store->lock);
+ g_print("Operations are complete.\n");
+}
+
+/* Convenience wrappers that perform a single operation synchronously. */