Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / runtime / gr_scheduler_sts.cc

diff --git a/gnuradio-core/src/lib/runtime/gr_scheduler_sts.cc b/gnuradio-core/src/lib/runtime/gr_scheduler_sts.cc
new file mode 100644 (file)
index 0000000..fefc0dc
--- /dev/null
+++ b/gnuradio-core/src/lib/runtime/gr_scheduler_sts.cc
@@ -0,0 +1,87 @@
+/* -*- 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <gr_scheduler_sts.h>
+#include <gr_single_threaded_scheduler.h>
+#include <gruel/thread_body_wrapper.h>
+
+class sts_container
+{
+  gr_block_vector_t    d_blocks;
+  
+public:
+
+  sts_container(gr_block_vector_t blocks)
+    : d_blocks(blocks) {}
+
+  void operator()()
+  {
+    gr_make_single_threaded_scheduler(d_blocks)->run();
+  }
+};
+
+
+gr_scheduler_sptr
+gr_scheduler_sts::make(gr_flat_flowgraph_sptr ffg)
+{
+  return gr_scheduler_sptr(new gr_scheduler_sts(ffg));
+}
+
+gr_scheduler_sts::gr_scheduler_sts(gr_flat_flowgraph_sptr ffg)
+  : gr_scheduler(ffg)
+{
+  // Split the flattened flow graph into discrete partitions, each
+  // of which is topologically sorted.
+
+  std::vector<gr_basic_block_vector_t> graphs = ffg->partition();
+
+  // For each partition, create a thread to evaluate it using
+  // an instance of the gr_single_threaded_scheduler
+
+  for (std::vector<gr_basic_block_vector_t>::iterator p = graphs.begin();
+       p != graphs.end(); p++) {
+
+    gr_block_vector_t blocks = gr_flat_flowgraph::make_block_vector(*p);
+    d_threads.create_thread(
+        gruel::thread_body_wrapper<sts_container>(sts_container(blocks),
+                                                 "single-threaded-scheduler"));
+  }
+}
+
+gr_scheduler_sts::~gr_scheduler_sts()
+{
+  stop();
+}
+
+void
+gr_scheduler_sts::stop()
+{
+  d_threads.interrupt_all();
+}
+
+void
+gr_scheduler_sts::wait()
+{
+  d_threads.join_all();
+}