1 files changed, 84 insertions, 0 deletions
diff --git a/gnuradio-runtime/include/gr_timer.h b/gnuradio-runtime/include/gr_timer.h
new file mode 100644
index 0000000000..45b663b368
--- /dev/null
+++ b/gnuradio-runtime/include/gr_timer.h
@@ -0,0 +1,84 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifndef INCLUDED_GR_TIMER_H
+#define INCLUDED_GR_TIMER_H
+
+#include <gr_runtime_api.h>
+#include <gr_types.h>
+
+class gr_timer;
+
+typedef boost::shared_ptr<gr_timer> gr_timer_sptr;
+
+GR_RUNTIME_API typedef void (*gr_timer_hook)(gr_timer *, void *);
+
+/*!
+ * \brief create a timeout.
+ *
+ * \ingroup misc
+ * gr_timer_hook is called when timer fires.
+ */
+GR_RUNTIME_API gr_timer_sptr gr_make_timer (gr_timer_hook, void *);
+
+/*!
+ * \brief implement timeouts
+ */
+class GR_RUNTIME_API gr_timer {
+  double	d_expiry;
+  double	d_period;
+  gr_timer_hook	d_hook;
+  void	       *d_hook_arg;
+
+  friend GR_RUNTIME_API gr_timer_sptr gr_make_timer (gr_timer_hook, void *);
+
+  gr_timer (...);
+
+public:
+  ~gr_timer ();
+
+  //! return absolute current time (seconds since the epoc).
+  static double now ();
+
+  /*!
+   * \brief schedule timer to fire at abs_when
+   * \param abs_when	absolute time in seconds since the epoc.
+   */
+  void schedule_at (double abs_when);
+
+  /*!
+   * \brief schedule timer to fire rel_when seconds from now.
+   * \param rel_when	relative time in seconds from now.
+   */
+  void schedule_after (double rel_when);	// relative time in seconds
+
+  /*!
+   * \brief schedule a periodic timeout.
+   * \param abs_when	absolute time to fire first time
+   * \param period	time between firings
+   */
+  void schedule_periodic (double abs_when, double period);
+
+  //! cancel timer
+  void unschedule ();
+};
+
+#endif /* INCLUDED_GR_TIMER_H */