Imported Upstream version 3.2.2

[debian/gnuradio] / mblock / src / lib / mb_timer_queue.h

diff --git a/mblock/src/lib/mb_timer_queue.h b/mblock/src/lib/mb_timer_queue.h
new file mode 100644 (file)
index 0000000..e8b8e1b
--- /dev/null
+++ b/mblock/src/lib/mb_timer_queue.h
@@ -0,0 +1,73 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2007,2008 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 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 <mblock/time.h>
+#include <vector>
+#include <queue>
+#include <pmt.h>
+#include <mblock/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 */