return "unknown error";
}
+/**
+ * Translate ATS properties to text
+ * Just intended for debugging
+ *
+ * @param retcode return code
+ * @return string with result
+ */
+const char *
+mlp_ats_to_string (int ats_index)
+{
+ switch (ats_index) {
+ case GNUNET_ATS_ARRAY_TERMINATOR:
+ return "GNUNET_ATS_ARRAY_TERMINATOR";
+ break;
+ case GNUNET_ATS_UTILIZATION_UP:
+ return "GNUNET_ATS_UTILIZATION_UP";
+ break;
+ case GNUNET_ATS_UTILIZATION_DOWN:
+ return "GNUNET_ATS_UTILIZATION_DOWN";
+ break;
+ case GNUNET_ATS_COST_LAN:
+ return "GNUNET_ATS_COST_LAN";
+ break;
+ case GNUNET_ATS_COST_WAN:
+ return "GNUNET_ATS_COST_LAN";
+ break;
+ case GNUNET_ATS_COST_WLAN:
+ return "GNUNET_ATS_COST_WLAN";
+ break;
+ case GNUNET_ATS_NETWORK_TYPE:
+ return "GNUNET_ATS_NETWORK_TYPE";
+ break;
+ case GNUNET_ATS_QUALITY_NET_DELAY:
+ return "GNUNET_ATS_QUALITY_NET_DELAY";
+ break;
+ case GNUNET_ATS_QUALITY_NET_DISTANCE:
+ return "GNUNET_ATS_QUALITY_NET_DISTANCE";
+ break;
+ default:
+ return "unknown";
+ break;
+ }
+ GNUNET_break (0);
+ return "unknown error";
+}
+
/**
* Find a peer in the DLL
* @param the peer to find
return GNUNET_OK;
}
+/**
+ * Find the required ATS information for an address
+ *
+ * @param addr the address
+ * @param ats_index the desired ATS index
+ *
+ * @return the index on success, otherwise GNUNET_SYSERR
+ */
+
+static int
+mlp_lookup_ats (struct ATS_Address *addr, int ats_index)
+{
+ struct GNUNET_ATS_Information * ats = addr->ats;
+ int c;
+ int found = GNUNET_NO;
+ for (c = 0; c < addr->ats_count; c++)
+ {
+ if (ats[c].type == ats_index)
+ {
+ found = GNUNET_YES;
+ break;
+ }
+ }
+ if (found == GNUNET_YES)
+ return c;
+ else
+ return GNUNET_SYSERR;
+}
/**
* Adds the problem constraints for all addresses
while (addr != NULL)
{
mlpi = addr->mlp_information;
+ /* lookup ATS information */
+ int index = mlp_lookup_ats(addr, mlp->q[c]);
+
+ if (index != GNUNET_SYSERR)
+ {
+ value = (double) addr->ats[index].value;
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Quality %i with ATS property `%s' has index %i in addresses ats information has value %f\n", c, mlp_ats_to_string(mlp->q[c]), index, (double) addr->ats[index].value);
+#endif
+ }
+#if DEBUG_ATS
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Quality %i with ATS property `%s' not existing\n", c, mlp_ats_to_string(mlp->q[c]), index);
+#endif
+ mlpi = addr->mlp_information;
+
+ mlpi->r_q[c] = mlp->r_q[c];
+ mlpi->c_q[c] = mlpi->c_b;
+ mlpi->q[c] = value;
+
ia[mlp->ci] = mlp->r_q[c];
ja[mlp->ci] = mlpi->c_b;
ar[mlp->ci] = p->f * value;
return GNUNET_OK;
}
-int mlp_solve_problem (struct GAS_MLP_Handle *mlp);
+int GAS_mlp_solve_problem (struct GAS_MLP_Handle *mlp);
static void
mlp_scheduler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Scheduled problem solving\n");
#endif
if (mlp->addr_in_problem != 0)
- mlp_solve_problem(mlp);
+ GAS_mlp_solve_problem(mlp);
}
* @return GNUNET_OK if could be solved, GNUNET_SYSERR on failure
*/
int
-mlp_solve_problem (struct GAS_MLP_Handle *mlp)
+GAS_mlp_solve_problem (struct GAS_MLP_Handle *mlp)
{
int res;
mlp->last_execution = GNUNET_TIME_absolute_get ();
mlp->stats = (struct GNUNET_STATISTICS_Handle *) stats;
mlp->max_iterations = max_iterations;
mlp->max_exec_duration = max_duration;
+ mlp->auto_solve = GNUNET_YES;
/* Redirect GLPK output to GNUnet logging */
glp_error_hook((void *) mlp, &mlp_term_hook);
return mlp;
}
+
/**
* Updates a single address in the MLP problem
*
{
int new;
struct MLP_information *mlpi;
- int c;
GNUNET_STATISTICS_update (mlp->stats,"# LP address updates", 1, GNUNET_NO);
if (new == GNUNET_YES)
{
mlpi = GNUNET_malloc (sizeof (struct MLP_information));
+
+ int c;
+ for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
+ {
+ mlpi->c_q[c] = 0;
+ mlpi->r_q[c] = 0;
+ mlpi->q[c] = 0.0;
+ }
+
address->mlp_information = mlpi;
mlp->addr_in_problem ++;
if (peer == NULL)
{
#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding new peer `%s'\n", GNUNET_i2s (&address->peer));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding new peer `%s'\n",
+ GNUNET_i2s (&address->peer));
#endif
peer = GNUNET_malloc (sizeof (struct ATS_Peer));
peer->head = NULL;
peer->tail = NULL;
+ int c;
for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
{
peer->f_q[c] = 1.0;
else
{
#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding address to peer `%s'\n", GNUNET_i2s (&address->peer));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Adding address to peer `%s'\n",
+ GNUNET_i2s (&address->peer));
#endif
GNUNET_CONTAINER_DLL_insert (peer->head, peer->tail, address);
}
else
{
#if DEBUG_ATS
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating existing address to peer `%s'\n", GNUNET_i2s (&address->peer));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating existing address to peer `%s'\n",
+ GNUNET_i2s (&address->peer));
#endif
mlpi = address->mlp_information;
+ int c;
+ for (c = 0; c < GNUNET_ATS_QualityPropertiesCount; c++)
+ {
+ int index = mlp_lookup_ats(address, mlp->q[c]);
+ if ((index != GNUNET_SYSERR) && (mlpi->c_q[c] != 0) && (mlpi->r_q[c] != 0))
+ {
+ if (mlpi->q[c] == (double) address->ats[index].value)
+ break;
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating address for peer `%s' value `%s'from %f to %f\n",
+ GNUNET_i2s (&address->peer),
+ mlp_ats_to_string(mlp->q[c]),
+ mlpi->q[c],
+ (double) address->ats[index].value);
+#endif
+ switch (mlp->q[c])
+ {
+ case GNUNET_ATS_QUALITY_NET_DELAY:
+ mlpi->q[c] = (double) address->ats[index].value;
+ break;
+ case GNUNET_ATS_QUALITY_NET_DISTANCE:
+ mlpi->q[c] = (double) address->ats[index].value;
+ break;
+ default:
+ break;
+ }
+
+ /* Get current number of columns */
+ int cols = glp_get_num_cols(mlp->prob);
+ int *ind = GNUNET_malloc (cols * sizeof (int));
+ double *val = GNUNET_malloc (cols * sizeof (double));
+
+ /* Get the matrix row of quality */
+ cols = glp_get_mat_row(mlp->prob, mlp->r_q[c], ind, val);
+
+ int c2;
+ /* Get the index if matrix row of quality */
+ for (c2 = 1; c2 <= cols; c2++ )
+ {
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Existing element column %i : %f\n",
+ ind[c2], val[c2]);
+#endif
+ if ((mlpi->c_b == ind[c2]) && (val[c2] != mlpi->q[c]))
+ {
+ /* Update the value */
+ val[c2] = mlpi->q[c];
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "New element column %i : %f\n",
+ ind[c2], val[c2]);
+#endif
+ }
+ }
+ /* Get the index if matrix row of quality */
+ glp_set_mat_row (mlp->prob, mlpi->r_q[c], cols, ind, val);
+
+ GNUNET_free (ind);
+ GNUNET_free (val);
+ }
+ }
}
/* Recalculate */
mlp_create_problem (mlp, addresses);
mlp->presolver_required = GNUNET_YES;
}
- mlp_solve_problem (mlp);
+ if (mlp->auto_solve == GNUNET_YES)
+ GAS_mlp_solve_problem (mlp);
}
/**
/* Recalculate */
mlp->presolver_required = GNUNET_YES;
- mlp_solve_problem (mlp);
+ if (mlp->auto_solve == GNUNET_YES)
+ GAS_mlp_solve_problem (mlp);
}
}
struct ATS_Peer * peer;
struct ATS_Peer * tmp;
+ GNUNET_assert (mlp != NULL);
+
if (mlp->mlp_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel(mlp->mlp_task);
}
/* clean up peer list */
- if (mlp != NULL)
+ peer = mlp->peer_head;
+ while (peer != NULL)
{
- peer = mlp->peer_head;
- while (peer != NULL)
- {
- GNUNET_CONTAINER_DLL_remove(mlp->peer_head, mlp->peer_tail, peer);
- tmp = peer->next;
- GNUNET_free (peer);
- peer = tmp;
- }
+ GNUNET_CONTAINER_DLL_remove(mlp->peer_head, mlp->peer_tail, peer);
+ tmp = peer->next;
+ GNUNET_free (peer);
+ peer = tmp;
}
mlp_delete_problem (mlp);
projects / oweals / gnunet.git / blobdiff