core: scheduler::ScopedEventId
refs #2295
Change-Id: I17bc949882bebadbf4d19aaede4c634a12121787
diff --git a/core/scheduler.cpp b/core/scheduler.cpp
index 5f9e707..0979f97 100644
--- a/core/scheduler.cpp
+++ b/core/scheduler.cpp
@@ -1,11 +1,12 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
- * Copyright (c) 2014 Regents of the University of California,
- * Arizona Board of Regents,
- * Colorado State University,
- * University Pierre & Marie Curie, Sorbonne University,
- * Washington University in St. Louis,
- * Beijing Institute of Technology
+ * Copyright (c) 2014, Regents of the University of California,
+ * Arizona Board of Regents,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University,
+ * Washington University in St. Louis,
+ * Beijing Institute of Technology,
+ * The University of Memphis
*
* This file is part of NFD (Named Data Networking Forwarding Daemon).
* See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
*
* You should have received a copy of the GNU General Public License along with
* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
#include "scheduler.hpp"
#include "global-io.hpp"
@@ -57,5 +58,47 @@
g_scheduler.reset();
}
+ScopedEventId::ScopedEventId()
+{
+}
+
+ScopedEventId::ScopedEventId(const EventId& event)
+ : m_event(event)
+{
+}
+
+ScopedEventId::ScopedEventId(ScopedEventId&& other)
+ : m_event(other.m_event)
+{
+ other.release();
+}
+
+ScopedEventId&
+ScopedEventId::operator=(const EventId& event)
+{
+ if (m_event != event) {
+ scheduler::cancel(m_event);
+ m_event = event;
+ }
+ return *this;
+}
+
+ScopedEventId::~ScopedEventId()
+{
+ scheduler::cancel(m_event);
+}
+
+void
+ScopedEventId::cancel()
+{
+ scheduler::cancel(m_event);
+}
+
+void
+ScopedEventId::release()
+{
+ m_event.reset();
+}
+
} // namespace scheduler
} // namespace nfd
diff --git a/core/scheduler.hpp b/core/scheduler.hpp
index c674429..a4b43c1 100644
--- a/core/scheduler.hpp
+++ b/core/scheduler.hpp
@@ -1,11 +1,12 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
- * Copyright (c) 2014 Regents of the University of California,
- * Arizona Board of Regents,
- * Colorado State University,
- * University Pierre & Marie Curie, Sorbonne University,
- * Washington University in St. Louis,
- * Beijing Institute of Technology
+ * Copyright (c) 2014, Regents of the University of California,
+ * Arizona Board of Regents,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University,
+ * Washington University in St. Louis,
+ * Beijing Institute of Technology,
+ * The University of Memphis
*
* This file is part of NFD (Named Data Networking Forwarding Daemon).
* See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
*
* You should have received a copy of the GNU General Public License along with
* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
#ifndef NFD_CORE_SCHEDULER_HPP
#define NFD_CORE_SCHEDULER_HPP
@@ -48,6 +49,49 @@
void
cancel(const EventId& eventId);
+/** \brief cancels an event automatically upon destruction
+ */
+class ScopedEventId : noncopyable
+{
+public:
+ ScopedEventId();
+
+ /** \brief implicit constructor from EventId
+ * \param event the event to be cancelled upon destruction
+ */
+ ScopedEventId(const EventId& event);
+
+ /** \brief move constructor
+ */
+ ScopedEventId(ScopedEventId&& other);
+
+ /** \brief assigns an event
+ *
+ * If a different event has been assigned to this instance previously,
+ * that event will be cancelled immediately.
+ */
+ ScopedEventId&
+ operator=(const EventId& event);
+
+ /** \brief cancels the event
+ */
+ ~ScopedEventId();
+
+ /** \brief cancels the event manually
+ */
+ void
+ cancel();
+
+ /** \brief releases the event so that it won't be disconnected
+ * when this ScopedEventId is destructed
+ */
+ void
+ release();
+
+private:
+ EventId m_event;
+};
+
} // namespace scheduler
using scheduler::EventId;