usrp: rethrow validate subdev spec errors with additional info

1 files changed, 36 insertions, 29 deletions

diff --git a/host/lib/usrp/misc_utils.cpp b/host/lib/usrp/misc_utils.cpp
index 46094ba32..a1664d810 100644
--- a/host/lib/usrp/misc_utils.cpp
+++ b/host/lib/usrp/misc_utils.cpp
@@ -25,6 +25,7 @@
 #include <uhd/usrp/codec_props.hpp>
 #include <boost/bind.hpp>
 #include <boost/foreach.hpp>
+#include <boost/format.hpp>
 
 using namespace uhd;
 using namespace uhd::usrp;
@@ -132,43 +133,49 @@ static void verify_xx_subdev_spec(
     wax::obj mboard,
     std::string xx_type
 ){
-    prop_names_t dboard_names = mboard[dboard_names_prop].as<prop_names_t>();
-    UHD_ASSERT_THROW(dboard_names.size() > 0); //well i hope there is a dboard
+    try{
+        prop_names_t dboard_names = mboard[dboard_names_prop].as<prop_names_t>();
+        UHD_ASSERT_THROW(dboard_names.size() > 0); //well i hope there is a dboard
 
-    //the subdevice specification is empty: handle automatic
-    if (subdev_spec.empty()){
-        BOOST_FOREACH(const std::string &db_name, dboard_names){
-            wax::obj dboard = mboard[named_prop_t(dboard_prop, db_name)];
+        //the subdevice specification is empty: handle automatic
+        if (subdev_spec.empty()){
+            BOOST_FOREACH(const std::string &db_name, dboard_names){
+                wax::obj dboard = mboard[named_prop_t(dboard_prop, db_name)];
+
+                //if the dboard slot is populated, take the first subdevice
+                if (dboard[DBOARD_PROP_DBOARD_ID].as<dboard_id_t>() != dboard_id_t::none()){
+                    std::string sd_name = dboard[DBOARD_PROP_SUBDEV_NAMES].as<prop_names_t>().front();
+                    subdev_spec.push_back(subdev_spec_pair_t(db_name, sd_name));
+                    break;
+                }
+            }
 
-            //if the dboard slot is populated, take the first subdevice
-            if (dboard[DBOARD_PROP_DBOARD_ID].as<dboard_id_t>() != dboard_id_t::none()){
+            //didnt find any populated dboards: add the first subdevice
+            if (subdev_spec.empty()){
+                std::string db_name = dboard_names.front();
+                wax::obj dboard = mboard[named_prop_t(dboard_prop, db_name)];
                 std::string sd_name = dboard[DBOARD_PROP_SUBDEV_NAMES].as<prop_names_t>().front();
                 subdev_spec.push_back(subdev_spec_pair_t(db_name, sd_name));
-                break;
             }
         }
 
-        //didnt find any populated dboards: add the first subdevice
-        if (subdev_spec.empty()){
-            std::string db_name = dboard_names.front();
-            wax::obj dboard = mboard[named_prop_t(dboard_prop, db_name)];
-            std::string sd_name = dboard[DBOARD_PROP_SUBDEV_NAMES].as<prop_names_t>().front();
-            subdev_spec.push_back(subdev_spec_pair_t(db_name, sd_name));
-        }
-    }
-
-    //sanity check that the dboard/subdevice names exist for this mboard
-    BOOST_FOREACH(const subdev_spec_pair_t &pair, subdev_spec){
-        //empty db name means select dboard automatically
-        if (pair.db_name.empty()){
-            if (dboard_names.size() != 1) throw std::runtime_error(
-                "A daughterboard name must be provided for multi-slot boards: " + subdev_spec.to_string()
-            );
-            pair.db_name == dboard_names.front();
+        //sanity check that the dboard/subdevice names exist for this mboard
+        BOOST_FOREACH(const subdev_spec_pair_t &pair, subdev_spec){
+            //empty db name means select dboard automatically
+            if (pair.db_name.empty()){
+                if (dboard_names.size() != 1) throw std::runtime_error(
+                    "A daughterboard name must be provided for multi-slot boards: " + subdev_spec.to_string()
+                );
+                pair.db_name == dboard_names.front();
+            }
+            uhd::assert_has(dboard_names, pair.db_name, xx_type + " dboard name");
+            wax::obj dboard = mboard[named_prop_t(dboard_prop, pair.db_name)];
+            uhd::assert_has(dboard[DBOARD_PROP_SUBDEV_NAMES].as<prop_names_t>(), pair.sd_name, xx_type + " subdev name");
         }
-        uhd::assert_has(dboard_names, pair.db_name, xx_type + " dboard name");
-        wax::obj dboard = mboard[named_prop_t(dboard_prop, pair.db_name)];
-        uhd::assert_has(dboard[DBOARD_PROP_SUBDEV_NAMES].as<prop_names_t>(), pair.sd_name, xx_type + " subdev name");
+    }catch(const std::exception &e){
+        throw std::runtime_error(str(boost::format(
+            "Validate %s subdev spec failed: %s\n    %s"
+        ) % xx_type % subdev_spec.to_string() % e.what()));
     }
 }