Imported Upstream version 3.2.2

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

diff --git a/gnuradio-core/src/lib/runtime/gr_block_executor.h b/gnuradio-core/src/lib/runtime/gr_block_executor.h
new file mode 100644 (file)
index 0000000..41b5ede
--- /dev/null
+++ b/gnuradio-core/src/lib/runtime/gr_block_executor.h
@@ -0,0 +1,69 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2008 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 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_BLOCK_EXECUTOR_H
+#define INCLUDED_GR_BLOCK_EXECUTOR_H
+
+#include <gr_runtime_types.h>
+#include <fstream>
+
+//class gr_block_executor;
+//typedef boost::shared_ptr<gr_block_executor> gr_block_executor_sptr;
+
+
+/*!
+ * \brief Manage the execution of a single block.
+ * \ingroup internal
+ */
+
+class gr_block_executor {
+protected:
+  gr_block_sptr                        d_block;        // The block we're trying to run
+  std::ofstream                       *d_log;
+
+  // These are allocated here so we don't have to on each iteration
+
+  gr_vector_int                        d_ninput_items_required;
+  gr_vector_int                        d_ninput_items;
+  gr_vector_const_void_star    d_input_items;
+  std::vector<bool>            d_input_done;
+  gr_vector_void_star          d_output_items;
+
+ public:
+  gr_block_executor(gr_block_sptr block);
+  ~gr_block_executor ();
+
+  enum state {
+    READY,           // We made progress; everything's cool.
+    READY_NO_OUTPUT,  // We consumed some input, but produced no output.
+    BLKD_IN,         // no progress; we're blocked waiting for input data.
+    BLKD_OUT,        // no progress; we're blocked waiting for output buffer space.
+    DONE,            // we're done; don't call me again.
+  };
+
+  /*
+   * \brief Run one iteration.
+   */
+  state run_one_iteration();
+};
+
+#endif /* INCLUDED_GR_BLOCK_EXECUTOR_H */