Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / runtime / gr_tpb_detail.h

diff --git a/gnuradio-core/src/lib/runtime/gr_tpb_detail.h b/gnuradio-core/src/lib/runtime/gr_tpb_detail.h
new file mode 100644 (file)
index 0000000..9566312
--- /dev/null
+++ b/gnuradio-core/src/lib/runtime/gr_tpb_detail.h
@@ -0,0 +1,81 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 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_GR_TPB_DETAIL_H
+#define INCLUDED_GR_TPB_DETAIL_H
+
+#include <boost/thread.hpp>
+
+class gr_block_detail;
+
+/*!
+ * \brief used by thread-per-block scheduler
+ */
+struct gr_tpb_detail {
+  typedef boost::unique_lock<boost::mutex>  scoped_lock;
+
+  boost::mutex                 mutex;                  //< protects all vars
+  bool                         input_changed;
+  boost::condition_variable    input_cond;
+  bool                         output_changed;
+  boost::condition_variable    output_cond;
+
+  gr_tpb_detail()
+    : input_changed(false), output_changed(false) {}
+
+
+  //! Called by us to tell all our upstream blocks that their output may have changed.
+  void notify_upstream(gr_block_detail *d);
+
+  //! Called by us to tell all our downstream blocks that their input may have changed.
+  void notify_downstream(gr_block_detail *d);
+
+  //! Called by us to notify both upstream and downstream
+  void notify_neighbors(gr_block_detail *d);
+
+  //! Called by us
+  void clear_changed()
+  {
+    scoped_lock        guard(mutex);
+    input_changed = false;
+    output_changed = false;
+  }
+
+private:
+
+  //! Used by notify_downstream
+  void set_input_changed()
+  {
+    scoped_lock        guard(mutex);
+    input_changed = true;
+    input_cond.notify_one();
+  }
+
+  //! Used by notify_upstream
+  void set_output_changed()
+  {
+    scoped_lock        guard(mutex);
+    output_changed = true;
+    output_cond.notify_one();
+  }
+
+};
+
+#endif /* INCLUDED_GR_TPB_DETAIL_H */