4 files changed, 215 insertions, 0 deletions
diff --git a/gruel/src/lib/msg/CMakeLists.txt b/gruel/src/lib/msg/CMakeLists.txt
new file mode 100644
index 000000000..74010af7e
--- /dev/null
+++ b/gruel/src/lib/msg/CMakeLists.txt
@@ -0,0 +1,28 @@
+# Copyright 2010 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.
+
+########################################################################
+# This file included, use CMake directory variables
+########################################################################
+
+list(APPEND gruel_sources
+    ${CMAKE_CURRENT_SOURCE_DIR}/msg_accepter.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/msg_accepter_msgq.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/msg_queue.cc
+)
diff --git a/gruel/src/lib/msg/msg_accepter.cc b/gruel/src/lib/msg/msg_accepter.cc
new file mode 100644
index 000000000..5acd98aa2
--- /dev/null
+++ b/gruel/src/lib/msg/msg_accepter.cc
@@ -0,0 +1,36 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gruel/msg_accepter.h>
+
+namespace gruel {
+
+  msg_accepter::~msg_accepter()
+  {
+    // NOP, required as virtual destructor
+  }
+
+} /* namespace gruel */
diff --git a/gruel/src/lib/msg/msg_accepter_msgq.cc b/gruel/src/lib/msg/msg_accepter_msgq.cc
new file mode 100644
index 000000000..2ae3537b8
--- /dev/null
+++ b/gruel/src/lib/msg/msg_accepter_msgq.cc
@@ -0,0 +1,48 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009 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.
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gruel/msg_accepter_msgq.h>
+
+using namespace pmt;
+
+namespace gruel {
+
+  msg_accepter_msgq::msg_accepter_msgq(msg_queue_sptr msgq)
+    : d_msg_queue(msgq)
+  {
+  }
+
+  msg_accepter_msgq::~msg_accepter_msgq()
+  {
+    // NOP, required as virtual destructor
+  }
+
+  void
+  msg_accepter_msgq::post(pmt_t msg)
+  {
+    d_msg_queue->insert_tail(msg);
+  }
+
+} /* namespace gruel */
diff --git a/gruel/src/lib/msg/msg_queue.cc b/gruel/src/lib/msg/msg_queue.cc
new file mode 100644
index 000000000..a0b120e40
--- /dev/null
+++ b/gruel/src/lib/msg/msg_queue.cc
@@ -0,0 +1,103 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gruel/msg_queue.h>
+#include <stdexcept>
+
+using namespace pmt;
+
+namespace gruel {
+
+  msg_queue_sptr
+  make_msg_queue(unsigned int limit)
+  {
+    return msg_queue_sptr(new msg_queue(limit));
+  }
+
+  msg_queue::msg_queue(unsigned int limit)
+    : d_limit(limit)
+  {
+  }
+
+  msg_queue::~msg_queue()
+  {
+    flush();
+  }
+
+  void
+  msg_queue::insert_tail(pmt_t msg)
+  {
+    gruel::scoped_lock guard(d_mutex);
+
+    while (full_p())
+      d_not_full.wait(guard);
+
+    d_msgs.push_back(msg);
+    d_not_empty.notify_one();
+  }
+
+  pmt_t
+  msg_queue::delete_head()
+  {
+    gruel::scoped_lock guard(d_mutex);
+
+    while (empty_p())
+      d_not_empty.wait(guard);
+
+    pmt_t m(d_msgs.front());
+    d_msgs.pop_front();
+
+    if (d_limit > 0)		// Unlimited length queues never block on write
+      d_not_full.notify_one();
+
+    return m;
+  }
+
+  pmt_t
+  msg_queue::delete_head_nowait()
+  {
+    gruel::scoped_lock guard(d_mutex);
+
+    if (empty_p())
+      return pmt_t();
+
+    pmt_t m(d_msgs.front());
+    d_msgs.pop_front();
+
+    if (d_limit > 0)		// Unlimited length queues never block on write
+      d_not_full.notify_one();
+
+    return m;
+  }
+
+  void
+  msg_queue::flush()
+  {
+    while (delete_head_nowait() != pmt_t())
+      ;
+  }
+
+} /* namespace gruel */