1 files changed, 84 insertions, 16 deletions

diff --git a/host/lib/device.cpp b/host/lib/device.cpp
index f181d31e4..82052708a 100644
--- a/host/lib/device.cpp
+++ b/host/lib/device.cpp
@@ -12,54 +12,122 @@
 // 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, see <http://www.gnu.org/licenses/>.
+// asize_t with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
+#include <uhd/usrp/usrp1e.hpp>
 #include <uhd/usrp/usrp2.hpp>
-#include <uhd/device.hpp>
+#include <uhd/dict.hpp>
+#include <uhd/utils.hpp>
+#include <boost/foreach.hpp>
 #include <boost/format.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/functional/hash.hpp>
 #include <stdexcept>
+#include <algorithm>
 
 using namespace uhd;
 
+/*!
+ * Create a new device from a device address.
+ * Based on the address, call the appropriate make functions.
+ * \param dev_addr the device address
+ * \return a smart pointer to a device
+ */
+static device::sptr make_device(const device_addr_t &dev_addr){
+
+    //create a usrp1e
+    if (dev_addr["type"] == "usrp1e"){
+        return usrp::usrp1e::make(dev_addr);
+    }
+
+    //create a usrp2
+    if (dev_addr["type"] == "usrp2"){
+        return usrp::usrp2::make(dev_addr);
+    }
+
+    throw std::runtime_error("cant make a device");
+}
+
+/*!
+ * Make a device hash that maps 1 to 1 with a device address.
+ * The hash will be used to identify created devices.
+ * \param dev_addr the device address
+ * \return the hash number
+ */
+static size_t hash_device_addr(
+    const device_addr_t &dev_addr
+){
+    //sort the keys of the device address
+    std::vector<std::string> keys = dev_addr.get_keys();
+    std::sort(keys.begin(), keys.end());
+
+    //combine the hashes of sorted keys/value pairs
+    size_t hash = 0;
+    BOOST_FOREACH(std::string key, keys){
+        boost::hash_combine(hash, key);
+        boost::hash_combine(hash, dev_addr[key]);
+    }
+    return hash;
+}
+
+/***********************************************************************
+ * Discover
+ **********************************************************************/
 device_addrs_t device::discover(const device_addr_t &hint){
     device_addrs_t device_addrs;
+
+    //discover the usrp1es
+    std::vector<device_addr_t> usrp2_addrs = usrp::usrp1e::discover(hint);
+    device_addrs.insert(device_addrs.begin(), usrp2_addrs.begin(), usrp2_addrs.end());
+
+    //discover the usrp2s
     if (hint.has_key("addr")){
         std::vector<device_addr_t> usrp2_addrs = usrp::usrp2::discover(hint);
         device_addrs.insert(device_addrs.begin(), usrp2_addrs.begin(), usrp2_addrs.end());
     }
+
     return device_addrs;
 }
 
+/***********************************************************************
+ * Make
+ **********************************************************************/
 device::sptr device::make(const device_addr_t &hint, size_t which){
     std::vector<device_addr_t> device_addrs = discover(hint);
 
     //check that we found any devices
     if (device_addrs.size() == 0){
         throw std::runtime_error(str(
-            boost::format("No devices found for %s") % device_addr_to_string(hint)
+            boost::format("No devices found for %s") % device_addr::to_string(hint)
         ));
     }
 
     //check that the which index is valid
     if (device_addrs.size() <= which){
         throw std::runtime_error(str(
-            boost::format("No device at index %d for %s") % which % device_addr_to_string(hint)
+            boost::format("No device at index %d for %s") % which % device_addr::to_string(hint)
         ));
     }
 
-    //create the new device with the discovered address
-    //TODO only a usrp2 device will be made (until others are supported)
-    if (hint.has_key("addr")){
-        return usrp::usrp2::make(device_addrs.at(which));
-    }
-    throw std::runtime_error("cant make a device");
-}
+    //create a unique hash for the device address
+    device_addr_t dev_addr = device_addrs.at(which);
+    size_t dev_hash = hash_device_addr(dev_addr);
+    //std::cout << boost::format("Hash: %u") % dev_hash << std::endl;
 
-device::device(void){
-    /* NOP */
-}
+    //map device address hash to created devices
+    static uhd::dict<size_t, boost::weak_ptr<device> > hash_to_device;
 
-device::~device(void){
-    /* NOP */
+    //try to find an existing device
+    try{
+        ASSERT_THROW(hash_to_device.has_key(dev_hash));
+        ASSERT_THROW(not hash_to_device[dev_hash].expired());
+        return hash_to_device[dev_hash].lock();
+    }
+    //create and register a new device
+    catch(const std::assert_error &e){
+        device::sptr dev = make_device(dev_addr);
+        hash_to_device[dev_hash] = dev;
+        return dev;
+    }
 }