1 files changed, 73 insertions, 0 deletions
diff --git a/mblock/src/lib/mb_timer_queue.h b/mblock/src/lib/mb_timer_queue.h
new file mode 100644
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+++ b/mblock/src/lib/mb_timer_queue.h
@@ -0,0 +1,73 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2007 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 2, 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef INCLUDED_MB_TIMER_QUEUE_H
+#define INCLUDED_MB_TIMER_QUEUE_H
+
+#include <mb_time.h>
+#include <vector>
+#include <queue>
+#include <pmt.h>
+#include <mb_msg_accepter.h>
+
+class mb_timeout {
+public:
+  mb_time		d_when;		// absolute time to fire timeout
+  mb_time		d_delta;	// if periodic, delta_t to next timeout
+  bool			d_is_periodic;	// true iff this is a periodic timeout
+  pmt_t			d_user_data;	// data from %timeout msg
+  pmt_t			d_handle;	// handle for cancellation
+  mb_msg_accepter_sptr	d_accepter;	// where to send the message
+
+  // one-shot constructor
+  mb_timeout(const mb_time &abs_time,
+	     pmt_t user_data, mb_msg_accepter_sptr accepter);
+
+  // periodic constructor
+  mb_timeout(const mb_time &first_abs_time, const mb_time &delta_time,
+	     pmt_t user_data, mb_msg_accepter_sptr accepter);
+
+  pmt_t handle() const { return d_handle; }
+};
+
+typedef boost::shared_ptr<mb_timeout> mb_timeout_sptr;
+
+
+//! Sort criterion for priority_queue
+class timeout_later
+{
+public:
+  bool operator() (const mb_timeout_sptr t1, const mb_timeout_sptr t2)
+  {
+    return t1->d_when > t2->d_when;
+  }
+};
+
+
+class mb_timer_queue : public std::priority_queue<mb_timeout_sptr,
+						  std::vector<mb_timeout_sptr>,
+						  timeout_later>
+{
+public:
+  void cancel(pmt_t handle);
+};
+
+#endif /* INCLUDED_MB_TIMER_QUEUE_H */