1 files changed, 66 insertions, 0 deletions
diff --git a/src/UpdateQueue.cxx b/src/UpdateQueue.cxx
new file mode 100644
index 000000000..85eb22358
--- /dev/null
+++ b/src/UpdateQueue.cxx
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "UpdateQueue.hxx"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+
+/* make this dynamic?, or maybe this is big enough... */
+static struct {
+	char *path;
+	bool discard;
+} update_queue[32];
+
+static size_t update_queue_length;
+
+unsigned
+update_queue_push(const char *path, bool discard, unsigned base)
+{
+	assert(update_queue_length <= G_N_ELEMENTS(update_queue));
+
+	if (update_queue_length == G_N_ELEMENTS(update_queue))
+		return 0;
+
+	update_queue[update_queue_length].path = g_strdup(path);
+	update_queue[update_queue_length].discard = discard;
+
+	++update_queue_length;
+
+	return base + update_queue_length;
+}
+
+char *
+update_queue_shift(bool *discard_r)
+{
+	char *path;
+
+	if (update_queue_length == 0)
+		return NULL;
+
+	path = update_queue[0].path;
+	*discard_r = update_queue[0].discard;
+
+	memmove(&update_queue[0], &update_queue[1],
+		--update_queue_length * sizeof(update_queue[0]));
+	return path;
+}