From bf500a8d6bb96476808fde1fea09a51ab8f728d6 Mon Sep 17 00:00:00 2001 From: Christian Grothoff Date: Tue, 13 Sep 2011 12:40:14 +0000 Subject: make new current --- src/transport/gnunet-service-transport_ats.c | 1754 -------------------------- 1 file changed, 1754 deletions(-) delete mode 100644 src/transport/gnunet-service-transport_ats.c (limited to 'src/transport/gnunet-service-transport_ats.c') diff --git a/src/transport/gnunet-service-transport_ats.c b/src/transport/gnunet-service-transport_ats.c deleted file mode 100644 index 220fe522b..000000000 --- a/src/transport/gnunet-service-transport_ats.c +++ /dev/null @@ -1,1754 +0,0 @@ -/* - This file is part of GNUnet. - (C) 2009, 2010 Christian Grothoff (and other contributing authors) - - GNUnet is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3, or (at your - option) any later version. - - GNUnet is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GNUnet; see the file COPYING. If not, write to the - Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. -*/ - -/** - * @file transport/gnunet-service-transport_ats.c - * @brief automatic transport selection - * @author Matthias Wachs - * - */ - - -#include "gnunet-service-transport_ats.h" -#include "gnunet_transport_service.h" -#include "gnunet_statistics_service.h" -#include "gnunet_container_lib.h" - - - - - -/* LP/MIP problem object */ - -#if !HAVE_LIBGLPK - -#ifndef GLP_PROB_DEFINED -#define GLP_PROB_DEFINED -typedef struct -{ - double _opaque_prob[100]; -} glp_prob; -#endif - -typedef struct -{ /* integer optimizer control parameters */ - int msg_lev; /* message level (see glp_smcp) */ - int br_tech; /* branching technique: */ -#define GLP_BR_FFV 1 /* first fractional variable */ -#define GLP_BR_LFV 2 /* last fractional variable */ -#define GLP_BR_MFV 3 /* most fractional variable */ -#define GLP_BR_DTH 4 /* heuristic by Driebeck and Tomlin */ -#define GLP_BR_PCH 5 /* hybrid pseudocost heuristic */ - int bt_tech; /* backtracking technique: */ -#define GLP_BT_DFS 1 /* depth first search */ -#define GLP_BT_BFS 2 /* breadth first search */ -#define GLP_BT_BLB 3 /* best local bound */ -#define GLP_BT_BPH 4 /* best projection heuristic */ - double tol_int; /* mip.tol_int */ - double tol_obj; /* mip.tol_obj */ - int tm_lim; /* mip.tm_lim (milliseconds) */ - int out_frq; /* mip.out_frq (milliseconds) */ - int out_dly; /* mip.out_dly (milliseconds) */ - /* mip.cb_func */ - void *cb_info; /* mip.cb_info */ - int cb_size; /* mip.cb_size */ - int pp_tech; /* preprocessing technique: */ -#define GLP_PP_NONE 0 /* disable preprocessing */ -#define GLP_PP_ROOT 1 /* preprocessing only on root level */ -#define GLP_PP_ALL 2 /* preprocessing on all levels */ - double mip_gap; /* relative MIP gap tolerance */ - int mir_cuts; /* MIR cuts (GLP_ON/GLP_OFF) */ - int gmi_cuts; /* Gomory's cuts (GLP_ON/GLP_OFF) */ - int cov_cuts; /* cover cuts (GLP_ON/GLP_OFF) */ - int clq_cuts; /* clique cuts (GLP_ON/GLP_OFF) */ - int presolve; /* enable/disable using MIP presolver */ - int binarize; /* try to binarize integer variables */ - int fp_heur; /* feasibility pump heuristic */ -#if 1 /* 28/V-2010 */ - int alien; /* use alien solver */ -#endif - double foo_bar[29]; /* (reserved) */ -} glp_iocp; - -typedef struct -{ /* simplex method control parameters */ - int msg_lev; /* message level: */ -#define GLP_MSG_OFF 0 /* no output */ -#define GLP_MSG_ERR 1 /* warning and error messages only */ -#define GLP_MSG_ON 2 /* normal output */ -#define GLP_MSG_ALL 3 /* full output */ -#define GLP_MSG_DBG 4 /* debug output */ - int meth; /* simplex method option: */ -#define GLP_PRIMAL 1 /* use primal simplex */ -#define GLP_DUALP 2 /* use dual; if it fails, use primal */ -#define GLP_DUAL 3 /* use dual simplex */ - int pricing; /* pricing technique: */ -#define GLP_PT_STD 0x11 /* standard (Dantzig rule) */ -#define GLP_PT_PSE 0x22 /* projected steepest edge */ - int r_test; /* ratio test technique: */ -#define GLP_RT_STD 0x11 /* standard (textbook) */ -#define GLP_RT_HAR 0x22 /* two-pass Harris' ratio test */ - double tol_bnd; /* spx.tol_bnd */ - double tol_dj; /* spx.tol_dj */ - double tol_piv; /* spx.tol_piv */ - double obj_ll; /* spx.obj_ll */ - double obj_ul; /* spx.obj_ul */ - int it_lim; /* spx.it_lim */ - int tm_lim; /* spx.tm_lim (milliseconds) */ - int out_frq; /* spx.out_frq */ - int out_dly; /* spx.out_dly (milliseconds) */ - int presolve; /* enable/disable using LP presolver */ - double foo_bar[36]; /* (reserved) */ -} glp_smcp; - -/* optimization direction flag: */ -#define GLP_MIN 1 /* minimization */ -#define GLP_MAX 2 /* maximization */ - -/* kind of structural variable: */ -#define GLP_CV 1 /* continuous variable */ -#define GLP_IV 2 /* integer variable */ -#define GLP_BV 3 /* binary variable */ - -/* type of auxiliary/structural variable: */ -#define GLP_FR 1 /* free variable */ -#define GLP_LO 2 /* variable with lower bound */ -#define GLP_UP 3 /* variable with upper bound */ -#define GLP_DB 4 /* double-bounded variable */ -#define GLP_FX 5 /* fixed variable */ - -/* solution indicator: */ -#define GLP_SOL 1 /* basic solution */ -#define GLP_IPT 2 /* interior-point solution */ -#define GLP_MIP 3 /* mixed integer solution */ - -/* solution status: */ -#define GLP_UNDEF 1 /* solution is undefined */ -#define GLP_FEAS 2 /* solution is feasible */ -#define GLP_INFEAS 3 /* solution is infeasible */ -#define GLP_NOFEAS 4 /* no feasible solution exists */ -#define GLP_OPT 5 /* solution is optimal */ -#define GLP_UNBND 6 /* solution is unbounded */ - -/* return codes: */ -#define GLP_EBADB 0x01 /* invalid basis */ -#define GLP_ESING 0x02 /* singular matrix */ -#define GLP_ECOND 0x03 /* ill-conditioned matrix */ -#define GLP_EBOUND 0x04 /* invalid bounds */ -#define GLP_EFAIL 0x05 /* solver failed */ -#define GLP_EOBJLL 0x06 /* objective lower limit reached */ -#define GLP_EOBJUL 0x07 /* objective upper limit reached */ -#define GLP_EITLIM 0x08 /* iteration limit exceeded */ -#define GLP_ETMLIM 0x09 /* time limit exceeded */ -#define GLP_ENOPFS 0x0A /* no primal feasible solution */ -#define GLP_ENODFS 0x0B /* no dual feasible solution */ -#define GLP_EROOT 0x0C /* root LP optimum not provided */ -#define GLP_ESTOP 0x0D /* search terminated by application */ -#define GLP_EMIPGAP 0x0E /* relative mip gap tolerance reached */ -#define GLP_ENOFEAS 0x0F /* no primal/dual feasible solution */ -#define GLP_ENOCVG 0x10 /* no convergence */ -#define GLP_EINSTAB 0x11 /* numerical instability */ -#define GLP_EDATA 0x12 /* invalid data */ -#define GLP_ERANGE 0x13 /* result out of range */ - -/* enable/disable flag: */ -#define GLP_ON 1 /* enable something */ -#define GLP_OFF 0 /* disable something */ - -#endif - -/* - * Wrappers for GLPK Functions - */ - - -void * -_lp_create_prob (void) -{ -#if HAVE_LIBGLPK - return glp_create_prob (); -#else - // Function not implemented - GNUNET_break (0); -#endif - return NULL; -} - -void -_lp_set_obj_dir (glp_prob *P, int dir) -{ -#if HAVE_LIBGLPK - return glp_set_obj_dir (P, dir); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_set_prob_name (glp_prob *P, const char *name) -{ -#if HAVE_LIBGLPK - glp_set_prob_name (P, name); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -int -_lp_add_cols (glp_prob *P, int ncs) -{ -#if HAVE_LIBGLPK - return glp_add_cols (P, ncs); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -int -_lp_add_rows (glp_prob *P, int nrs) -{ -#if HAVE_LIBGLPK - return glp_add_rows (P, nrs); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - - -void -_lp_set_row_bnds (glp_prob *P, int i, int type, double lb, double ub) -{ -#if HAVE_LIBGLPK - glp_set_row_bnds (P, i, type, lb, ub); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_init_smcp (void *parm) -{ -#if HAVE_LIBGLPK - glp_init_smcp (parm); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_set_col_name (glp_prob *P, int j, const char *name) -{ -#if HAVE_LIBGLPK - glp_set_col_name (P, j, name); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_set_col_bnds (glp_prob *P, int j, int type, double lb, double ub) -{ -#if HAVE_LIBGLPK - glp_set_col_bnds (P, j, type, lb, ub); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_set_obj_coef (glp_prob *P, int j, double coef) -{ -#if HAVE_LIBGLPK - glp_set_obj_coef (P, j, coef); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -void -_lp_delete_prob (void *P) -{ -#if HAVE_LIBGLPK - glp_delete_prob (P); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static int -_lp_simplex (glp_prob *P, void *parm) -{ -#if HAVE_LIBGLPK - return glp_simplex (P, parm); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -static void -_lp_load_matrix (glp_prob *P, int ne, const int ia[], const int ja[], - const double ar[]) -{ -#if HAVE_LIBGLPK - glp_load_matrix (P, ne, ia, ja, ar); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static void -_lp_set_mat_row (glp_prob *P, int i, int len, const int ind[], - const double val[]) -{ -#if HAVE_LIBGLPK - glp_set_mat_row (P, i, len, ind, val); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static int -_lp_write_lp (glp_prob *P, const void *parm, const char *fname) -{ -#if HAVE_LIBGLPK - return glp_write_lp (P, parm, fname); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -static void -_lp_init_iocp (void *parm) -{ -#if HAVE_LIBGLPK - glp_init_iocp (parm); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static int -_lp_intopt (glp_prob *P, const void *parm) -{ -#if HAVE_LIBGLPK - return glp_intopt (P, parm); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -static int -_lp_get_status (glp_prob *P) -{ -#if HAVE_LIBGLPK - return glp_get_status (P); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -static int -_lp_mip_status (glp_prob *P) -{ -#if HAVE_LIBGLPK - return glp_mip_status (P); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -static void -_lp_set_col_kind (glp_prob *P, int j, int kind) -{ -#if HAVE_LIBGLPK - glp_set_col_kind (P, j, kind); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static void -_lp_free_env (void) -{ -#if HAVE_LIBGLPK - glp_free_env (); -#else - // Function not implemented - GNUNET_break (0); -#endif -} - -static const char * -_lp_get_col_name (glp_prob *P, int j) -{ -#if HAVE_LIBGLPK - return glp_get_col_name (P, j); -#else - // Function not implemented - GNUNET_break (0); -#endif - return NULL; -} - -static double -_lp_mip_obj_val (glp_prob *P) -{ -#if HAVE_LIBGLPK - return glp_mip_obj_val (P); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0.0; -} - - -static double -_lp_get_col_prim (glp_prob *P, int j) -{ -#if HAVE_LIBGLPK - return glp_get_col_prim (P, j); -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0.0; -} - -static int -_lp_print_sol (glp_prob *P, const char *fname) -{ -#if HAVE_LIBGLPK -#else - // Function not implemented - GNUNET_break (0); -#endif - return 0; -} - -/* - * Dummy functions for CFLAGS - */ - -static void -_dummy2 (); -static void -_dummy () -{ - return; - _lp_get_col_name (NULL, 0); - _lp_mip_obj_val (NULL); - _lp_get_col_prim (NULL, 0); - _lp_set_mat_row (NULL, 0, 0, NULL, NULL); - _dummy2 (); -} - - - -static void -_dummy2 () -{ - ats_modify_problem_state (NULL, 0); - qm[1].atis_index = 0; - _dummy (); - int t = ATS_COST_UPDATED + ATS_MODIFIED + ATS_NEW; - - t++; -} - -/* - * ATS Functions - */ - - -/** - * Initialize ATS - * @param cfg configuration handle to retrieve configuration (to be removed) - * @return - */ - -struct ATS_Handle * -ats_init (double D, double U, double R, int v_b_min, int v_n_min, - int max_iterations, struct GNUNET_TIME_Relative max_duration, - GNUNET_TRANSPORT_ATS_AddressNotification address_not, - GNUNET_TRANSPORT_ATS_ResultCallback res_cb) -{ - struct ATS_Handle *ats = NULL; - - ats = GNUNET_malloc (sizeof (struct ATS_Handle)); - - ats->prob = NULL; - - ats->addr_notification = address_not; - ats->result_cb = res_cb; - - ats->max_iterations = max_iterations; - ats->max_exec_duration = max_duration; - - ats->D = D; - ats->U = U; - ats->R = R; - ats->v_b_min = v_b_min; - ats->v_n_min = v_n_min; - ats->dump_min_peers = 0; - ats->dump_min_addr = 0; - ats->dump_overwrite = GNUNET_NO; - ats->mechanisms = NULL; - ats->peers = NULL; - ats->successful_executions = 0; - ats->invalid_executions = 0; - - return ats; -} - - -/** solve the bandwidth distribution problem - * @param max_it maximum iterations - * @param max_dur maximum duration in ms - * @param D weight for diversity - * @param U weight for utility - * @param R weight for relativity - * @param v_b_min minimal bandwidth per peer - * @param v_n_min minimum number of connections - * @param stat result struct - * @return GNUNET_SYSERR if glpk is not available, number of mechanisms used - */ -int -ats_create_problem (struct ATS_Handle *ats, struct ATS_internals *stat, - struct ATS_peer *peers, int c_p, - struct ATS_mechanism *mechanisms, int c_m) -{ - if ((c_p == 0) || (c_m == 0)) - return GNUNET_SYSERR; - - ats->prob = _lp_create_prob (); - - int c; - int c_c_ressources = available_ressources; - int c_q_metrics = available_quality_metrics; - - double M = VERY_BIG_DOUBLE_VALUE; - double Q[c_q_metrics + 1]; - - for (c = 1; c <= c_q_metrics; c++) - { - Q[c] = 1; - } - - if (ats->v_n_min > c_p) - ats->v_n_min = c_p; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Creating problem with: %i peers, %i mechanisms, %i resource entries, %i quality metrics \n", - c_p, c_m, c_c_ressources, c_q_metrics); -#endif - - int size = - 1 + 3 + 10 * c_m + c_p + (c_q_metrics * c_m) + c_q_metrics + - c_c_ressources * c_m; - int row_index; - int array_index = 1; - int *ia = GNUNET_malloc (size * sizeof (int)); - int *ja = GNUNET_malloc (size * sizeof (int)); - double *ar = GNUNET_malloc (size * sizeof (double)); - - _lp_set_prob_name (ats->prob, "gnunet ats bandwidth distribution"); - _lp_set_obj_dir (ats->prob, GLP_MAX); - - /* adding columns */ - char *name; - - _lp_add_cols (ats->prob, 2 * c_m); - /* adding b_t cols */ - for (c = 1; c <= c_m; c++) - { - GNUNET_asprintf (&name, "p_%s_b%i", - GNUNET_i2s (&(mechanisms[c].peer->peer)), c); - _lp_set_col_name (ats->prob, c, name); - GNUNET_free (name); - _lp_set_col_bnds (ats->prob, c, GLP_LO, 0.0, 0.0); - _lp_set_col_kind (ats->prob, c, GLP_CV); - _lp_set_obj_coef (ats->prob, c, 0); - } - - /* adding n_t cols */ - for (c = c_m + 1; c <= 2 * c_m; c++) - { - GNUNET_asprintf (&name, "p_%s_n%i", - GNUNET_i2s (&(mechanisms[c - c_m].peer->peer)), (c - c_m)); - _lp_set_col_name (ats->prob, c, name); - GNUNET_free (name); - _lp_set_col_bnds (ats->prob, c, GLP_DB, 0.0, 1.0); - _lp_set_col_kind (ats->prob, c, GLP_IV); - _lp_set_obj_coef (ats->prob, c, 0); - } - - /* feasibility constraints */ - /* Constraint 1: one address per peer */ - row_index = 1; - - _lp_add_rows (ats->prob, c_p); - - for (c = 1; c <= c_p; c++) - { -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 1.0, 1.0); - struct ATS_mechanism *m = peers[c].m_head; - - while (m != NULL) - { - ia[array_index] = row_index; - ja[array_index] = (c_m + m->col_index); - ar[array_index] = 1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], - ar[array_index]); -#endif - array_index++; - m = m->next; - } - row_index++; - } - - /* Constraint 2: only active mechanism gets bandwidth assigned */ - _lp_add_rows (ats->prob, c_m); - for (c = 1; c <= c_m; c++) - { - /* b_t - n_t * M <= 0 */ -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - _lp_set_row_bnds (ats->prob, row_index, GLP_UP, 0.0, 0.0); - ia[array_index] = row_index; - ja[array_index] = mechanisms[c].col_index; - ar[array_index] = 1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - ia[array_index] = row_index; - ja[array_index] = c_m + mechanisms[c].col_index; - ar[array_index] = -M; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - row_index++; - } - - /* Constraint 3: minimum bandwidth */ - _lp_add_rows (ats->prob, c_m); - - for (c = 1; c <= c_m; c++) - { - /* b_t - n_t * b_min <= 0 */ -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif -#if HAVE_LIBGLPK - _lp_set_row_bnds (ats->prob, row_index, GLP_LO, 0.0, 0.0); -#endif - ia[array_index] = row_index; - ja[array_index] = mechanisms[c].col_index; - ar[array_index] = 1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - ia[array_index] = row_index; - ja[array_index] = c_m + mechanisms[c].col_index; - ar[array_index] = -ats->v_b_min; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - row_index++; - } - int c2; - - /* Constraint 4: max ressource capacity */ - /* V cr: bt * ct_r <= cr_max - * */ - - _lp_add_rows (ats->prob, available_ressources); - - double ct_max = VERY_BIG_DOUBLE_VALUE; - double ct_min = 0.0; - - stat->begin_cr = array_index; - - for (c = 0; c < available_ressources; c++) - { - ct_max = ressources[c].c_max; - ct_min = ressources[c].c_min; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] %f..%f\n", - row_index, ct_min, ct_max); -#endif -#if HAVE_LIBGLPK - _lp_set_row_bnds (ats->prob, row_index, GLP_DB, ct_min, ct_max); -#endif - for (c2 = 1; c2 <= c_m; c2++) - { - double value = 0; - - ia[array_index] = row_index; - ja[array_index] = c2; - value = mechanisms[c2].ressources[c].c; - ar[array_index] = value; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], - ar[array_index]); -#endif - array_index++; - } - row_index++; - } - stat->end_cr = array_index--; - - /* Constraint 5: min number of connections */ - _lp_add_rows (ats->prob, 1); - - for (c = 1; c <= c_m; c++) - { - // b_t - n_t * b_min >= 0 -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - _lp_set_row_bnds (ats->prob, row_index, GLP_LO, ats->v_n_min, 0.0); - ia[array_index] = row_index; - ja[array_index] = c_m + mechanisms[c].col_index; - ar[array_index] = 1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - } - row_index++; - - // optimisation constraints - - // adding columns - - // Constraint 6: optimize for diversity - int col_d; - - col_d = _lp_add_cols (ats->prob, 1); - - _lp_set_col_name (ats->prob, col_d, "d"); - _lp_set_obj_coef (ats->prob, col_d, ats->D); - _lp_set_col_bnds (ats->prob, col_d, GLP_LO, 0.0, 0.0); - _lp_add_rows (ats->prob, 1); - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 0.0, 0.0); - - stat->col_d = col_d; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - for (c = 1; c <= c_m; c++) - { - ia[array_index] = row_index; - ja[array_index] = c_m + mechanisms[c].col_index; - ar[array_index] = 1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - } - ia[array_index] = row_index; - ja[array_index] = col_d; - ar[array_index] = -1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - row_index++; - - // Constraint 7: optimize for quality - int col_qm; - - col_qm = _lp_add_cols (ats->prob, c_q_metrics); - - stat->col_qm = col_qm; - //GNUNET_assert (col_qm == (2*c_mechs) + 3 + 1); - for (c = 0; c < c_q_metrics; c++) - { - GNUNET_asprintf (&name, "Q_%s", qm[c].name); - _lp_set_col_name (ats->prob, col_qm + c, name); - _lp_set_col_bnds (ats->prob, col_qm + c, GLP_LO, 0.0, 0.0); - GNUNET_free (name); - _lp_set_obj_coef (ats->prob, col_qm + c, Q[c]); - } - - _lp_add_rows (ats->prob, available_quality_metrics); - - stat->begin_qm = row_index; - for (c = 1; c <= c_q_metrics; c++) - { -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - double value = 1; - - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 0.0, 0.0); - for (c2 = 1; c2 <= c_m; c2++) - { - ia[array_index] = row_index; - ja[array_index] = c2; - if (qm[c - 1].atis_index == GNUNET_TRANSPORT_ATS_QUALITY_NET_DELAY) - { - double v0 = 0, v1 = 0, v2 = 0; - - v0 = mechanisms[c2].quality[c - 1].values[0]; - if (v1 < 1) - v0 = 0.1; - v1 = mechanisms[c2].quality[c - 1].values[1]; - if (v1 < 1) - v0 = 0.1; - v2 = mechanisms[c2].quality[c - 1].values[2]; - if (v1 < 1) - v0 = 0.1; - value = 100.0 / ((v0 + 2 * v1 + 3 * v2) / 6.0); - value = 1; - } - if (qm[c - 1].atis_index == GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE) - { - double v0 = 0, v1 = 0, v2 = 0; - - v0 = mechanisms[c2].quality[c - 1].values[0]; - if (v0 < 1) - v0 = 1; - v1 = mechanisms[c2].quality[c - 1].values[1]; - if (v1 < 1) - v1 = 1; - v2 = mechanisms[c2].quality[c - 1].values[2]; - if (v2 < 1) - v2 = 1; - value = (v0 + 2 * v1 + 3 * v2) / 6.0; - if (value >= 1) - value = (double) 10 / value; - else - value = 10; - } - ar[array_index] = (mechanisms[c2].peer->f) * value; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: %s [%i,%i]=%f \n", - array_index, qm[c - 1].name, ia[array_index], ja[array_index], - ar[array_index]); -#endif - array_index++; - } - ia[array_index] = row_index; - ja[array_index] = col_qm + c - 1; - ar[array_index] = -1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - row_index++; - } - stat->end_qm = row_index - 1; - - // Constraint 8: optimize bandwidth utility - int col_u; - - col_u = _lp_add_cols (ats->prob, 1); - - _lp_set_col_name (ats->prob, col_u, "u"); - _lp_set_obj_coef (ats->prob, col_u, ats->U); - _lp_set_col_bnds (ats->prob, col_u, GLP_LO, 0.0, 0.0); - _lp_add_rows (ats->prob, 1); - stat->col_u = col_u; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 0.0, 0.0); - for (c = 1; c <= c_m; c++) - { - ia[array_index] = row_index; - ja[array_index] = c; - ar[array_index] = mechanisms[c].peer->f; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - } - ia[array_index] = row_index; - ja[array_index] = col_u; - ar[array_index] = -1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - - array_index++; - row_index++; - - // Constraint 9: optimize relativity - int col_r; - - col_r = _lp_add_cols (ats->prob, 1); - - _lp_set_col_name (ats->prob, col_r, "r"); - _lp_set_obj_coef (ats->prob, col_r, ats->R); - _lp_set_col_bnds (ats->prob, col_r, GLP_LO, 0.0, 0.0); - _lp_add_rows (ats->prob, c_p); - - stat->col_r = col_r; - for (c = 1; c <= c_p; c++) - { - _lp_set_row_bnds (ats->prob, row_index, GLP_LO, 0.0, 0.0); - struct ATS_mechanism *m = peers[c].m_head; - - while (m != NULL) - { - ia[array_index] = row_index; - ja[array_index] = m->col_index; - ar[array_index] = 1 / mechanisms[c].peer->f; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], - ar[array_index]); -#endif - array_index++; - m = m->next; - } - ia[array_index] = row_index; - ja[array_index] = col_r; - ar[array_index] = -1; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, ia[array_index], ja[array_index], ar[array_index]); -#endif - array_index++; - row_index++; - } - - /* Loading the matrix */ - _lp_load_matrix (ats->prob, array_index - 1, ia, ja, ar); - - stat->c_mechs = c_m; - stat->c_peers = c_p; - stat->solution = 0; - stat->valid = GNUNET_YES; - - /* clean up */ - GNUNET_free (ja); - GNUNET_free (ia); - GNUNET_free (ar); - - return GNUNET_OK; -} - - -void -ats_delete_problem (struct ATS_Handle *ats) -{ -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Deleting problem\n"); -#endif - int c; - - for (c = 0; c < (ats->internal).c_mechs; c++) - GNUNET_free_non_null (ats->mechanisms[c].rc); - if (ats->mechanisms != NULL) - { - GNUNET_free (ats->mechanisms); - ats->mechanisms = NULL; - } - - if (ats->peers != NULL) - { - GNUNET_free (ats->peers); - ats->peers = NULL; - } - - if (ats->prob != NULL) - { - _lp_delete_prob (ats->prob); - ats->prob = NULL; - } - - ats->internal.begin_cr = GNUNET_SYSERR; - ats->internal.begin_qm = GNUNET_SYSERR; - ats->internal.c_mechs = 0; - ats->internal.c_peers = 0; - ats->internal.end_cr = GNUNET_SYSERR; - ats->internal.end_qm = GNUNET_SYSERR; - ats->internal.solution = GNUNET_SYSERR; - ats->internal.valid = GNUNET_SYSERR; -} - -void -ats_modify_problem_state (struct ATS_Handle *ats, enum ATS_problem_state s) -{ - if (ats == NULL) - return; - switch (s) - { - case ATS_NEW: - ats->internal.recreate_problem = GNUNET_NO; - ats->internal.modified_quality = GNUNET_NO; - ats->internal.modified_resources = GNUNET_NO; - break; - case ATS_MODIFIED: - ats->internal.recreate_problem = GNUNET_YES; - break; - case ATS_QUALITY_UPDATED: - ats->internal.modified_quality = GNUNET_YES; - break; - case ATS_COST_UPDATED: - ats->internal.modified_resources = GNUNET_YES; - break; - case ATS_QUALITY_COST_UPDATED: - ats->internal.modified_resources = GNUNET_YES; - ats->internal.modified_quality = GNUNET_YES; - break; - default: - return; - } - - - -} - -void -ats_solve_problem (struct ATS_Handle *ats, unsigned int max_it, - unsigned int max_dur, unsigned int c_peers, - unsigned int c_mechs, struct ATS_internals *stat) -{ - int result = GNUNET_SYSERR; - int lp_solution = GNUNET_SYSERR; - int mlp_solution = GNUNET_SYSERR; - - // Solving simplex - - glp_smcp opt_lp; - - _lp_init_smcp (&opt_lp); -#if VERBOSE_ATS - opt_lp.msg_lev = GLP_MSG_ALL; -#else - opt_lp.msg_lev = GLP_MSG_OFF; -#endif - // setting iteration limit - opt_lp.it_lim = max_it; - // maximum duration - opt_lp.tm_lim = max_dur; - - if (ats->internal.recreate_problem == GNUNET_YES) - opt_lp.presolve = GLP_ON; - - result = _lp_simplex (ats->prob, &opt_lp); - lp_solution = _lp_get_status (ats->prob); - - if ((result == GLP_ETMLIM) || (result == GLP_EITLIM)) - { - ats->internal.valid = GNUNET_NO; - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "ATS exceeded time or iteration limit!\n"); - return; - } - - if (ats_evaluate_results (result, lp_solution, "LP") == GNUNET_YES) - { - stat->valid = GNUNET_YES; - } - else - { - ats->internal.simplex_rerun_required = GNUNET_YES; - opt_lp.presolve = GLP_ON; - result = _lp_simplex (ats->prob, &opt_lp); - lp_solution = _lp_get_status (ats->prob); - - // TODO: Remove if this does not appear until release - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "" "EXECUTED SIMPLEX WITH PRESOLVER! %i \n", lp_solution); - - if (ats_evaluate_results (result, lp_solution, "LP") != GNUNET_YES) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "After execution simplex with presolver: STILL INVALID!\n"); - char *filename; - - GNUNET_asprintf (&filename, "ats_mlp_p%i_m%i_%llu.mlp", - ats->internal.c_peers, ats->internal.c_mechs, - GNUNET_TIME_absolute_get ().abs_value); - _lp_write_lp ((void *) ats->prob, NULL, filename); - GNUNET_free (filename); - stat->valid = GNUNET_NO; - ats->internal.recreate_problem = GNUNET_YES; - return; - } - stat->valid = GNUNET_YES; - } - - // Solving mlp - glp_iocp opt_mlp; - - _lp_init_iocp (&opt_mlp); - // maximum duration - opt_mlp.tm_lim = max_dur; - // output level -#if VERBOSE_ATS - opt_mlp.msg_lev = GLP_MSG_ALL; -#else - opt_mlp.msg_lev = GLP_MSG_OFF; -#endif - - result = _lp_intopt (ats->prob, &opt_mlp); - mlp_solution = _lp_mip_status (ats->prob); - stat->solution = mlp_solution; - - if (ats_evaluate_results (result, mlp_solution, "MLP") == GNUNET_YES) - { - stat->valid = GNUNET_YES; - } - else - { - // TODO: Remove if this does not appear until release - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "MLP solution for %i peers, %i mechs is invalid: %i\n", - ats->internal.c_peers, ats->internal.c_mechs, mlp_solution); - stat->valid = GNUNET_NO; - } - -#if VERBOSE_ATS - if (_lp_get_col_prim (ats->prob, 2 * c_mechs + 1) != 1) - { - int c; - - for (c = 1; c <= available_quality_metrics; c++) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s %f\n", - _lp_get_col_name (ats->prob, 2 * c_mechs + 3 + c), - _lp_get_col_prim (ats->prob, 2 * c_mechs + 3 + c)); - } - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s %f\n", - _lp_get_col_name (ats->prob, 2 * c_mechs + 1), - _lp_get_col_prim (ats->prob, 2 * c_mechs + 1)); - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s %f\n", - _lp_get_col_name (ats->prob, 2 * c_mechs + 2), - _lp_get_col_prim (ats->prob, 2 * c_mechs + 2)); - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s %f\n", - _lp_get_col_name (ats->prob, 2 * c_mechs + 3), - _lp_get_col_prim (ats->prob, 2 * c_mechs + 3)); - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "objective value: %f\n", - _lp_mip_obj_val (ats->prob)); - } -#endif -} - - -void -ats_shutdown (struct ATS_Handle *ats) -{ -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "ATS shutdown\n"); -#endif - ats_delete_problem (ats); - _lp_free_env (); - - GNUNET_free (ats); -} - -void -ats_update_problem_qm (struct ATS_Handle *ats) -{ - int array_index; - int row_index; - int c, c2; - int c_q_metrics = available_quality_metrics; - - int *ja = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (int)); - double *ar = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (double)); -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating problem quality metrics\n"); -#endif - row_index = ats->internal.begin_qm; - - for (c = 1; c <= c_q_metrics; c++) - { - array_index = 1; - double value = 1; - -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] \n", row_index); -#endif - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 0.0, 0.0); - for (c2 = 1; c2 <= ats->internal.c_mechs; c2++) - { - ja[array_index] = c2; - GNUNET_assert (ats->mechanisms[c2].addr != NULL); - GNUNET_assert (ats->mechanisms[c2].peer != NULL); - - if (qm[c - 1].atis_index == GNUNET_TRANSPORT_ATS_QUALITY_NET_DELAY) - { - double v0 = 0, v1 = 0, v2 = 0; - - v0 = ats->mechanisms[c2].quality[c - 1].values[0]; - if (v1 < 1) - v0 = 0.1; - v1 = ats->mechanisms[c2].quality[c - 1].values[1]; - if (v1 < 1) - v0 = 0.1; - v2 = ats->mechanisms[c2].quality[c - 1].values[2]; - if (v1 < 1) - v0 = 0.1; - value = 100.0 / ((v0 + 2 * v1 + 3 * v2) / 6.0); - //value = 1; - } - if (qm[c - 1].atis_index == GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE) - { - double v0 = 0, v1 = 0, v2 = 0; - - v0 = ats->mechanisms[c2].quality[c - 1].values[0]; - if (v0 < 1) - v0 = 1; - v1 = ats->mechanisms[c2].quality[c - 1].values[1]; - if (v1 < 1) - v1 = 1; - v2 = ats->mechanisms[c2].quality[c - 1].values[2]; - if (v2 < 1) - v2 = 1; - value = (v0 + 2 * v1 + 3 * v2) / 6.0; - if (value >= 1) - value = (double) 10 / value; - else - value = 10; - } - ar[array_index] = (ats->mechanisms[c2].peer->f) * value; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: %s [%i,%i]=%f \n", - array_index, qm[c - 1].name, row_index, ja[array_index], - ar[array_index]); -#endif - array_index++; - } - ja[array_index] = ats->internal.col_qm + c - 1; - ar[array_index] = -1; - -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, row_index, ja[array_index], ar[array_index]); -#endif - _lp_set_mat_row (ats->prob, row_index, array_index, ja, ar); - array_index = 1; - row_index++; - } - GNUNET_free_non_null (ja); - GNUNET_free_non_null (ar); - -} - - -void -ats_calculate_bandwidth_distribution (struct ATS_Handle *ats) -{ - struct GNUNET_TIME_Absolute start; - struct GNUNET_TIME_Relative creation; - struct GNUNET_TIME_Relative solving; - int c_m; - int c_p; - char *text = "unmodified"; - -#if FIXME_WACHS - int dur; - - if (INT_MAX < ats->max_exec_duration.rel_value) - dur = INT_MAX; - else - dur = (int) ats->max_exec_duration.rel_value; -#endif - - ats->internal.simplex_rerun_required = GNUNET_NO; - start = GNUNET_TIME_absolute_get (); - if ((ats->internal.recreate_problem == GNUNET_YES) || (ats->prob == NULL) || - (ats->internal.valid == GNUNET_NO)) - { - text = "new"; - ats->internal.recreate_problem = GNUNET_YES; - ats_delete_problem (ats); - ats->addr_notification (&ats->peers, &c_p, &ats->mechanisms, &c_m); -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Service returned: %i peer, %i mechs\n", c_p, c_m); -#endif - ats_create_problem (ats, &ats->internal, ats->peers, c_p, ats->mechanisms, - c_m); - - -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Peers/Addresses were modified... new problem: %i peer, %i mechs\n", - ats->internal.c_peers, ats->internal.c_mechs); -#endif - } - - else if ((ats->internal.recreate_problem == GNUNET_NO) && - (ats->internal.modified_resources == GNUNET_YES) && - (ats->internal.valid == GNUNET_YES)) - { - text = "modified resources"; - ats_update_problem_cr (ats); - } - else if ((ats->internal.recreate_problem == GNUNET_NO) && - (ats->internal.modified_quality == GNUNET_YES) && - (ats->internal.valid == GNUNET_YES)) - { - text = "modified quality"; - ats_update_problem_qm (ats); - //ats_update_problem_qm_TEST (); - } -#if DEBUG_ATS - else - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Problem is %s\n", text); -#endif - - creation = - GNUNET_TIME_absolute_get_difference (start, GNUNET_TIME_absolute_get ()); - start = GNUNET_TIME_absolute_get (); - - ats->internal.solution = GLP_UNDEF; - if (ats->internal.valid == GNUNET_YES) - { - ats_solve_problem (ats, ats->max_iterations, - ats->max_exec_duration.rel_value, ats->internal.c_peers, - ats->internal.c_mechs, &ats->internal); - } - solving = - GNUNET_TIME_absolute_get_difference (start, GNUNET_TIME_absolute_get ()); - - if (ats->internal.valid == GNUNET_YES) - { - /* Telling about new distribution */ - ats->result_cb (); - - int msg_type = GNUNET_ERROR_TYPE_DEBUG; - -#if DEBUG_ATS - msg_type = GNUNET_ERROR_TYPE_ERROR; -#endif - GNUNET_log (msg_type, - "MLP %s: creation time: %llu, execution time: %llu, %i peers, %i mechanisms, simplex rerun: %s, solution %s\n", - text, creation.rel_value, solving.rel_value, - ats->internal.c_peers, ats->internal.c_mechs, - (ats->internal.simplex_rerun_required == - GNUNET_NO) ? "NO" : "YES", - (ats->internal.solution == 5) ? "OPTIMAL" : "INVALID"); - ats->successful_executions++; - GNUNET_STATISTICS_set (ats->stats, "# ATS successful executions", - ats->successful_executions, GNUNET_NO); - - if ((ats->internal.recreate_problem == GNUNET_YES) || (ats->prob == NULL)) - GNUNET_STATISTICS_set (ats->stats, "ATS state", ATS_NEW, GNUNET_NO); - else if ((ats->internal.modified_resources == GNUNET_YES) && - (ats->internal.modified_quality == GNUNET_NO)) - GNUNET_STATISTICS_set (ats->stats, "ATS state", ATS_COST_UPDATED, - GNUNET_NO); - else if ((ats->internal.modified_resources == GNUNET_NO) && - (ats->internal.modified_quality == GNUNET_YES) && - (ats->internal.simplex_rerun_required == GNUNET_NO)) - GNUNET_STATISTICS_set (ats->stats, "ATS state", ATS_QUALITY_UPDATED, - GNUNET_NO); - else if ((ats->internal.modified_resources == GNUNET_YES) && - (ats->internal.modified_quality == GNUNET_YES) && - (ats->internal.simplex_rerun_required == GNUNET_NO)) - GNUNET_STATISTICS_set (ats->stats, "ATS state", ATS_QUALITY_COST_UPDATED, - GNUNET_NO); - else if (ats->internal.simplex_rerun_required == GNUNET_NO) - GNUNET_STATISTICS_set (ats->stats, "ATS state", ATS_UNMODIFIED, - GNUNET_NO); - } - else - { - if (ats->internal.c_peers != 0) - { - ats->invalid_executions++; - GNUNET_STATISTICS_set (ats->stats, "# ATS invalid executions", - ats->invalid_executions, GNUNET_NO); - } - else - { - GNUNET_STATISTICS_set (ats->stats, "# ATS successful executions", - ats->successful_executions, GNUNET_NO); - } - } - - GNUNET_STATISTICS_set (ats->stats, "ATS duration", - solving.rel_value + creation.rel_value, GNUNET_NO); - GNUNET_STATISTICS_set (ats->stats, "ATS mechanisms", ats->internal.c_mechs, - GNUNET_NO); - GNUNET_STATISTICS_set (ats->stats, "ATS peers", ats->internal.c_peers, - GNUNET_NO); - GNUNET_STATISTICS_set (ats->stats, "ATS solution", ats->internal.solution, - GNUNET_NO); - GNUNET_STATISTICS_set (ats->stats, "ATS timestamp", start.abs_value, - GNUNET_NO); - - if ((ats->save_mlp == GNUNET_YES) && - (ats->internal.c_mechs >= ats->dump_min_peers) && - (ats->internal.c_mechs >= ats->dump_min_addr)) - { - char *filename; - - if (ats->dump_overwrite == GNUNET_NO) - { - GNUNET_asprintf (&filename, "ats_mlp_p%i_m%i_%s_%llu.mlp", - ats->internal.c_peers, ats->internal.c_mechs, text, - GNUNET_TIME_absolute_get ().abs_value); - _lp_write_lp ((void *) ats->prob, NULL, filename); - } - else - { - GNUNET_asprintf (&filename, "ats_mlp_p%i_m%i.mlp", ats->internal.c_peers, - ats->internal.c_mechs); - _lp_write_lp ((void *) ats->prob, NULL, filename); - } - GNUNET_free (filename); - } - if ((ats->save_solution == GNUNET_YES) && - (ats->internal.c_mechs >= ats->dump_min_peers) && - (ats->internal.c_mechs >= ats->dump_min_addr)) - { - char *filename; - - if (ats->dump_overwrite == GNUNET_NO) - { - GNUNET_asprintf (&filename, "ats_mlp_p%i_m%i_%s_%llu.sol", - ats->internal.c_peers, ats->internal.c_mechs, text, - GNUNET_TIME_absolute_get ().abs_value); - _lp_print_sol (ats->prob, filename); - } - else - { - GNUNET_asprintf (&filename, "ats_mlp_p%i_m%i.sol", ats->internal.c_peers, - ats->internal.c_mechs); - _lp_print_sol (ats->prob, filename); - } - GNUNET_free (filename); - } - - ats->internal.recreate_problem = GNUNET_NO; - ats->internal.modified_resources = GNUNET_NO; - ats->internal.modified_quality = GNUNET_NO; -} - -/** - * Evaluate the result of the last simplex or mlp solving - * @param result return value returned by the solver - * @param solution solution state - * @param problem mlp or lp - * @return GNUNET_NO if solution is invalid, GNUNET_YES if solution is - * valid - */ - -int -ats_evaluate_results (int result, int solution, char *problem) -{ - int cont = GNUNET_NO; - -#if DEBUG_ATS || VERBOSE_ATS - int error_kind = GNUNET_ERROR_TYPE_DEBUG; -#endif -#if VERBOSE_ATS - error_kind = GNUNET_ERROR_TYPE_ERROR; -#endif - switch (result) - { - case GNUNET_SYSERR: /* GNUNET problem, not GLPK related */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s, GLPK solving not executed\n", problem); -#endif - break; - case GLP_ESTOP: /* search terminated by application */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s , Search terminated by application\n", problem); -#endif - break; - case GLP_EITLIM: /* iteration limit exceeded */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "%s Iteration limit exceeded\n", - problem); -#endif - break; - case GLP_ETMLIM: /* time limit exceeded */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "%s Time limit exceeded\n", problem); -#endif - break; - case GLP_ENOPFS: /* no primal feasible solution */ - case GLP_ENODFS: /* no dual feasible solution */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s No feasible solution\n", problem); -#endif - break; - case GLP_EBADB: /* invalid basis */ - case GLP_ESING: /* singular matrix */ - case GLP_ECOND: /* ill-conditioned matrix */ - case GLP_EBOUND: /* invalid bounds */ - case GLP_EFAIL: /* solver failed */ - case GLP_EOBJLL: /* objective lower limit reached */ - case GLP_EOBJUL: /* objective upper limit reached */ - case GLP_EROOT: /* root LP optimum not provided */ -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s Invalid Input data: %i\n", problem, result); -#endif - break; - case 0: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s Problem has been solved\n", problem); -#endif - break; - } - - switch (solution) - { - case GLP_UNDEF: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s solution is undefined\n", problem); -#endif - break; - case GLP_OPT: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s solution is optimal\n", problem); -#endif - cont = GNUNET_YES; - break; - case GLP_FEAS: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, - "%s solution is %s feasible, however, its optimality (or non-optimality) has not been proven\n", - problem, (0 == strcmp (problem, "LP") ? "" : "integer")); -#endif - cont = GNUNET_YES; - break; - case GLP_NOFEAS: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s problem has no %sfeasible solution\n", problem, - (0 == strcmp (problem, "LP") ? "" : "integer ")); -#endif - break; - case GLP_INFEAS: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s problem is infeasible \n", problem); -#endif - break; - case GLP_UNBND: -#if DEBUG_ATS || VERBOSE_ATS - GNUNET_log (error_kind, "%s problem is unbounded \n", problem); -#endif - default: - break; - } - return cont; -} - -void -ats_update_problem_cr (struct ATS_Handle *ats) -{ - int array_index; - int row_index; - int c, c2; - double ct_max, ct_min; - - int *ja = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (int)); - double *ar = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (double)); - - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Updating problem quality metrics\n"); - row_index = ats->internal.begin_cr; - array_index = 1; - - for (c = 0; c < available_ressources; c++) - { - ct_max = ressources[c].c_max; - ct_min = ressources[c].c_min; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "bounds [row]=[%i] %f..%f\n", - row_index, ct_min, ct_max); -#endif - _lp_set_row_bnds (ats->prob, row_index, GLP_DB, ct_min, ct_max); - for (c2 = 1; c2 <= ats->internal.c_mechs; c2++) - { - double value = 0; - - GNUNET_assert (ats->mechanisms[c2].addr != NULL); - GNUNET_assert (ats->mechanisms[c2].peer != NULL); - - ja[array_index] = c2; - value = ats->mechanisms[c2].ressources[c].c; - ar[array_index] = value; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "[index]=[%i]: [%i,%i]=%f \n", - array_index, row_index, ja[array_index], ar[array_index]); -#endif - array_index++; - } - _lp_set_mat_row (ats->prob, row_index, array_index, ja, ar); - row_index++; - } - GNUNET_free_non_null (ja); - GNUNET_free_non_null (ar); - -} - -void -ats_set_logging_options (struct ATS_Handle *ats, - struct GNUNET_STATISTICS_Handle *stats, - const struct GNUNET_CONFIGURATION_Handle *cfg) -{ - int minimum_addresses; - int minimum_peers; - int overwrite_dump; - int log_solution; - int log_problem; - unsigned long long value; - - if (ats == NULL) - return; - log_problem = - GNUNET_CONFIGURATION_get_value_yesno (cfg, "transport", "DUMP_MLP"); - log_solution = - GNUNET_CONFIGURATION_get_value_yesno (cfg, "transport", "DUMP_SOLUTION"); - overwrite_dump = - GNUNET_CONFIGURATION_get_value_yesno (cfg, "transport", "DUMP_OVERWRITE"); - if (GNUNET_OK == - GNUNET_CONFIGURATION_get_value_number (cfg, "transport", "DUMP_MIN_PEERS", - &value)) - minimum_peers = (int) value; - if (GNUNET_OK == - GNUNET_CONFIGURATION_get_value_number (cfg, "transport", "DUMP_MIN_ADDRS", - &value)) - minimum_addresses = (int) value; - - - ats->stats = stats; - ats->dump_min_addr = minimum_addresses; - ats->dump_min_peers = minimum_peers; - ats->dump_overwrite = overwrite_dump; - ats->save_mlp = log_problem; - ats->save_solution = log_solution; -} - -#if 0 -static void -ats_update_problem_qm_TEST () -{ - int row_index; - int c int c2; - int c_old; - int changed = 0; - - int old_ja[ats->internal.c_mechs + 2]; - double old_ar[ats->internal.c_mechs + 2]; - - int *ja = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (int)); - double *ar = - GNUNET_malloc ((1 + ats->internal.c_mechs * 2 + 3 + - available_quality_metrics) * sizeof (double)); -#if DEBUG_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Updating problem quality metrics TEST\n"); -#endif - if (ats->internal.begin_qm > 0) - row_index = ats->internal.begin_qm; - else - return; - for (c = 0; c < available_quality_metrics; c++) - { - c_old = _lp_get_mat_row (ats->prob, row_index, old_ja, old_ar); - _lp_set_row_bnds (ats->prob, row_index, GLP_FX, 0.0, 0.0); - for (c2 = 1; c2 <= c_old; c2++) - { - ja[c2] = old_ja[c2]; - if ((changed < 3) && (c2 > 2) && (old_ar[c2] != -1)) - { - ar[c2] = old_ar[c2] + 5 - changed; - changed++; - } - else - ar[c2] = old_ar[c2]; -#if VERBOSE_ATS - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "[index]=[%i]: old [%i,%i]=%f new [%i,%i]=%f\n", c2, - row_index, old_ja[c2], old_ar[c2], row_index, ja[c2], ar[c2]); -#endif - } - _lp_set_mat_row (ats->prob, row_index, c_old, ja, ar); - row_index++; - } - GNUNET_free_non_null (ja); - GNUNET_free_non_null (ar); -} -#endif - - - -/* end of transport_ats.c */ -- cgit v1.2.3