From 290fc2315a6b7f2d2bc6b98318783e3278a97453 Mon Sep 17 00:00:00 2001
From: Johnathan Corgan
Date: Sun, 11 Apr 2010 13:30:45 -0700
Subject: Removed omnithreads dependency from libusrp2

---
 usrp2/host/lib/usrp2_impl.cc | 41 +++++++++++++++++++++++------------------
 1 file changed, 23 insertions(+), 18 deletions(-)

(limited to 'usrp2/host/lib/usrp2_impl.cc')

diff --git a/usrp2/host/lib/usrp2_impl.cc b/usrp2/host/lib/usrp2_impl.cc
index d4f29baf0..5592c76ea 100644
--- a/usrp2/host/lib/usrp2_impl.cc
+++ b/usrp2/host/lib/usrp2_impl.cc
@@ -1,6 +1,6 @@
 /* -*- c++ -*- */
 /*
- * Copyright 2008,2009 Free Software Foundation, Inc.
+ * Copyright 2008,2009,2010 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,9 +24,9 @@
 #include <usrp2/tune_result.h>
 #include <usrp2/copiers.h>
 #include <gruel/inet.h>
+#include <gruel/realtime.h>
 #include <usrp2_types.h>
 #include "usrp2_impl.h"
-#include "usrp2_thread.h"
 #include "eth_buffer.h"
 #include "pktfilter.h"
 #include "control.h"
@@ -129,10 +129,10 @@ namespace usrp2 {
 
 
   usrp2::impl::impl(const std::string &ifc, props *p, size_t rx_bufsize)
-    : d_eth_buf(new eth_buffer(rx_bufsize)), d_interface_name(ifc), d_pf(0), d_bg_thread(0),
+    : d_eth_buf(new eth_buffer(rx_bufsize)), d_interface_name(ifc), d_pf(0),
       d_bg_running(false), d_rx_seqno(-1), d_tx_seqno(0), d_next_rid(0),
       d_num_rx_frames(0), d_num_rx_missing(0), d_num_rx_overruns(0), d_num_rx_bytes(0),
-      d_num_enqueued(0), d_enqueued_mutex(), d_bg_pending_cond(&d_enqueued_mutex),
+      d_num_enqueued(0), d_enqueued_mutex(), d_bg_pending_cond(),
       d_channel_rings(NCHANS), d_tx_interp(0), d_rx_decim(0), d_dont_enqueue(true)
   {
     if (!d_eth_buf->open(ifc, htons(U2_ETHERTYPE)))
@@ -152,8 +152,8 @@ namespace usrp2 {
 
     memset(d_pending_replies, 0, sizeof(d_pending_replies));
 
-    d_bg_thread = new usrp2_thread(this);
-    d_bg_thread->start();
+    // Kick off receive thread
+    start_bg();
 
     // In case the USRP2 was left streaming RX
     // FIXME: only one channel right now
@@ -208,7 +208,6 @@ namespace usrp2 {
   usrp2::impl::~impl()
   {
     stop_bg();
-    d_bg_thread = 0; // thread class deletes itself
     delete d_pf;
     d_eth_buf->close();
     delete d_eth_buf;
@@ -335,19 +334,25 @@ namespace usrp2 {
   //        Background loop: received packet demuxing
   // ----------------------------------------------------------------
 
+  void
+  usrp2::impl::start_bg()
+  {
+    d_rx_tg.create_thread(boost::bind(&usrp2::impl::bg_loop, this));
+  }
+
   void
   usrp2::impl::stop_bg()
   {
     d_bg_running = false;
-    d_bg_pending_cond.signal();
-
-    void *dummy_status;
-    d_bg_thread->join(&dummy_status);
+    d_bg_pending_cond.notify_one(); // FIXME: check if needed
+    d_rx_tg.join_all();
   }
 
   void
   usrp2::impl::bg_loop()
   {
+    gruel::enable_realtime_scheduling();
+
     d_bg_running = true;
     while(d_bg_running) {
       DEBUG_LOG(":");
@@ -362,9 +367,9 @@ namespace usrp2 {
       // The channel ring thread that decrements d_num_enqueued to zero
       // will signal this thread to continue.
       {
-        omni_mutex_lock l(d_enqueued_mutex);
+        gruel::scoped_lock l(d_enqueued_mutex);
         while(d_num_enqueued > 0 && d_bg_running)
-	  d_bg_pending_cond.wait();
+	  d_bg_pending_cond.wait(l);
       }
     }
     d_bg_running = false;
@@ -463,7 +468,7 @@ namespace usrp2 {
     unsigned int chan = u2p_chan(&pkt->hdrs.fixed);
 
     {
-      omni_mutex_lock l(d_channel_rings_mutex);
+      gruel::scoped_lock l(d_channel_rings_mutex);
 
       if (!d_channel_rings[chan]) {
 	DEBUG_LOG("!");
@@ -650,7 +655,7 @@ namespace usrp2 {
     }
 
     {
-      omni_mutex_lock l(d_channel_rings_mutex);
+      gruel::scoped_lock l(d_channel_rings_mutex);
       if (d_channel_rings[channel]) {
 	std::cerr << "usrp2: channel " << channel
 		  << " already streaming" << std::endl;
@@ -704,7 +709,7 @@ namespace usrp2 {
     }
 
     {
-      omni_mutex_lock l(d_channel_rings_mutex);
+      gruel::scoped_lock guard(d_channel_rings_mutex);
       if (d_channel_rings[channel]) {
 	std::cerr << "usrp2: channel " << channel
 		  << " already streaming" << std::endl;
@@ -758,7 +763,7 @@ namespace usrp2 {
     }
 
     {
-      omni_mutex_lock l(d_channel_rings_mutex);
+      gruel::scoped_lock guard(d_channel_rings_mutex);
       if (d_channel_rings[channel]) {
 	std::cerr << "usrp2: channel " << channel
 		  << " already streaming" << std::endl;
@@ -820,7 +825,7 @@ namespace usrp2 {
     op_generic_t reply;
 
     {
-      omni_mutex_lock l(d_channel_rings_mutex);
+      gruel::scoped_lock l(d_channel_rings_mutex);
 
       memset(&cmd, 0, sizeof(cmd));
       init_etf_hdrs(&cmd.h, d_addr, 0, CONTROL_CHAN, -1);
-- 
cgit