diff --git a/extensions/dbg_interactive/queues.i b/extensions/dbg_interactive/queues.i
new file mode 100644
index 0000000..ff1728d
--- /dev/null
+++ b/extensions/dbg_interactive/queues.i
@@ -0,0 +1,198 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Sebastien Decugis <sdecugis@freediameter.net>							 *
+*													 *
+* Copyright (c) 2013, WIDE Project and NICT								 *
+* All rights reserved.											 *
+* 													 *
+* Redistribution and use of this software in source and binary forms, with or without modification, are  *
+* permitted provided that the following conditions are met:						 *
+* 													 *
+* * Redistributions of source code must retain the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer.										 *
+*    													 *
+* * Redistributions in binary form must reproduce the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer in the documentation and/or other						 *
+*   materials provided with the distribution.								 *
+* 													 *
+* * Neither the name of the WIDE Project or NICT nor the 						 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of WIDE Project and 						 *
+*   NICT.												 *
+* 													 *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 	 *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 	 *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF   *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.								 *
+*********************************************************************************************************/
+
+/* Do not include this directly, use dbg_interactive.i instead */
+
+/****** FIFO QUEUES *********/
+
+struct fifo {
+};
+
+%extend fifo {
+	fifo(int max = 0) {
+		struct fifo * q = NULL;
+		int ret = fd_fifo_new(&q, max);
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+			return NULL;
+		}
+		return q;
+	}
+	~fifo() {
+		struct fifo *q = self;
+		fd_fifo_del(&q);
+	}
+	
+	/* Move all elements to another queue */
+	void move(struct fifo * to) {
+		int ret = fd_fifo_move($self, to, NULL);
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+		}
+	}
+	
+	/* Get the length of the queue (nb elements) */
+	int length() {
+		return fd_fifo_length ( $self ) ;
+	}
+
+	/* Is the threashold function useful here? TODO... */
+	
+	/* Post an item */
+	void post(PyObject * item, char * type = NULL) {
+		int ret;
+		if (type) {
+			void * real_obj = NULL;
+			swig_type_info * desttype = NULL;
+			desttype = SWIG_TypeQuery(type);
+			if (!desttype) {
+				DI_ERROR(EINVAL, NULL, "Unable to resolve this type. Please check the form: 'struct blahbla *'");
+				return;
+			}
+			/* Now, get the "real" value under the shadow umbrella */
+			ret = SWIG_ConvertPtr(item, &real_obj, desttype, SWIG_POINTER_DISOWN );
+			if (!SWIG_IsOK(ret)) {
+				DI_ERROR(EINVAL, SWIG_ErrorType(ret), "Unable to convert the item to given type");
+				return;
+			}
+			ret = fd_fifo_post($self, &real_obj);
+		} else {
+			PyObject * i = item;
+			Py_XINCREF(i);
+			ret = fd_fifo_post($self, &i);
+		}
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+		}
+	}
+	
+	/* Get (blocking) */
+	PyObject * get(char * type = NULL) {
+		int ret;
+		PyObject * i = NULL;
+		void * obj = NULL;
+		swig_type_info * desttype = NULL;
+		if (type) {
+			desttype = SWIG_TypeQuery(type);
+			if (!desttype) {
+				DI_ERROR(EINVAL, NULL, "Unable to resolve this type. Please check the form: 'struct blahbla *'");
+				return NULL;
+			}
+		}
+		
+		ret = fd_fifo_get($self, &obj);
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+		}
+		
+		if (type) {
+			return SWIG_NewPointerObj(obj, desttype, 0 );
+		} else {
+			i = obj;
+			return i;
+		}
+	}
+	
+	/* TryGet (non-blocking, returns None on empty queue) */
+	PyObject * tryget(char * type = NULL) {
+		int ret;
+		PyObject * i = NULL;
+		void * obj = NULL;
+		swig_type_info * desttype = NULL;
+		if (type) {
+			desttype = SWIG_TypeQuery(type);
+			if (!desttype) {
+				DI_ERROR(EINVAL, NULL, "Unable to resolve this type. Please check the form: 'struct blahbla *'");
+				return NULL;
+			}
+		}
+		
+		ret = fd_fifo_tryget($self, &obj);
+		if (ret == EWOULDBLOCK) {
+			Py_INCREF(Py_None);
+			return Py_None;
+		}
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+		}
+		
+		if (type) {
+			return SWIG_NewPointerObj(obj, desttype, 0 );
+		} else {
+			i = obj;
+			return i;
+		}
+	}
+	
+	/* TimedGet (blocking for a while) */
+	PyObject * timedget(long seconds, char * type = NULL) {
+		int ret;
+		PyObject * i = NULL;
+		struct timespec ts;
+		void * obj = NULL;
+		swig_type_info * desttype = NULL;
+		if (type) {
+			desttype = SWIG_TypeQuery(type);
+			if (!desttype) {
+				DI_ERROR(EINVAL, NULL, "Unable to resolve this type. Please check the form: 'struct blahbla *'");
+				return NULL;
+			}
+		}
+		
+		clock_gettime(CLOCK_REALTIME, &ts);
+		ts.tv_sec += seconds;
+		
+		ret = fd_fifo_timedget($self, &obj, &ts);
+		if (ret == ETIMEDOUT) {
+			Py_INCREF(Py_None);
+			return Py_None;
+		}
+		if (ret != 0) {
+			DI_ERROR(ret, NULL, NULL);
+		}
+		
+		if (type) {
+			return SWIG_NewPointerObj(obj, desttype, 0 );
+		} else {
+			i = obj;
+			return i;
+		}
+	}
+	
+}		
+	
+	
+	
+