event/{Coarse,Fine,Far}TimerEvent: aliases for TimerEvent

Preparing for a variant of TimerEvent with coarse 1-second granularity, but cheaper (with a timer wheel).
2021-02-04 20:45:43 +01:00
parent e802f1f61a
commit def962b6cb
14 changed files with 170 additions and 20 deletions
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2007-2021 CM4all GmbH
+ * All rights reserved.
+ *
+ * author: Max Kellermann <mk@cm4all.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - 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
+ * FOUNDATION 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.
+ */
+
+#pragma once
+
+#include "TimerEvent.hxx"
+
+/**
+ * This class invokes a callback function after a certain amount of
+ * time.  Use Schedule() to start the timer or Cancel() to cancel it.
+ *
+ * Unlike #CoarseTimerEvent, this class uses a high-resolution timer,
+ * but at the cost of more expensive insertion and deletion.
+ *
+ * This class is not thread-safe, all methods must be called from the
+ * thread that runs the #EventLoop, except where explicitly documented
+ * as thread-safe.
+ */
+using FineTimerEvent = TimerEvent;
+// TODO: implement