Implement generic task queue to handle handshakes and maintenance

1 files changed, 66 insertions, 0 deletions

diff --git a/src/task.h b/src/task.h
new file mode 100644
index 0000000..4c00207
--- /dev/null
+++ b/src/task.h
@@ -0,0 +1,66 @@
+/*
+  Copyright (c) 2012-2015, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+   \file
+
+   Task queue
+*/
+
+#pragma once
+
+#include "pqueue.h"
+
+
+struct fastd_task {
+	fastd_pqueue_t entry;
+	fastd_task_type_t type;
+};
+
+
+void fastd_task_handle(void);
+
+void fastd_task_reschedule(fastd_task_t *task, fastd_timeout_t timeout);
+
+
+static inline bool fastd_task_scheduled(fastd_task_t *task) {
+	return fastd_pqueue_linked(&task->entry);
+}
+
+static inline void fastd_task_unschedule(fastd_task_t *task) {
+	fastd_pqueue_remove(&task->entry);
+}
+
+static inline void fastd_task_reschedule_relative(fastd_task_t *task, int64_t delay) {
+	fastd_task_reschedule(task, task->entry.value + delay);
+}
+
+static inline void fastd_task_schedule(fastd_task_t *task, fastd_task_type_t type, fastd_timeout_t timeout) {
+	task->type = type;
+	fastd_task_reschedule(task, timeout);
+}
+
+
+bool fastd_task_timeout(fastd_timeout_t *timeout);