X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/df84a8d7f46571fdc9349b6fb17d5575c8a8b31e..294ddfafa470aa45f7c5f40f0d92c79a5f2075e2:/src/simgrid/sg_config.c

diff --git a/src/simgrid/sg_config.c b/src/simgrid/sg_config.c
index 04554824e9..054272ae94 100644
--- a/src/simgrid/sg_config.c
+++ b/src/simgrid/sg_config.c
@@ -18,16 +18,16 @@
 #include "instr/instr_interface.h"
 #include "simgrid/simix.h"
 #include "simgrid/sg_config.h"
-#ifdef HAVE_SMPI
+#include "simgrid_config.h" /* what was compiled in? */
+#if HAVE_SMPI
 #include "smpi/smpi_interface.h"
 #endif
 #include "mc/mc.h"
-#include "mc/mc_record.h"
+#include "src/mc/mc_record.h"
 #include "simgrid/instr.h"
-#include "mc/mc_replay.h"
+#include "src/mc/mc_replay.h"
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
-                                "About the configuration of simgrid");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf, "About the configuration of SimGrid");
 
 xbt_cfg_t _sg_cfg_set = NULL;
 
@@ -39,8 +39,7 @@ xbt_cfg_t _sg_cfg_set = NULL;
  */
 int _sg_cfg_init_status = 0;
 
-/* instruct the upper layer (simix or simdag) to exit as soon as possible
- */
+/* instruct the upper layer (simix or simdag) to exit as soon as possible */
 int _sg_cfg_exit_asap = 0;
 
 #define sg_cfg_exit_early() do { _sg_cfg_exit_asap = 1; return; } while (0)
@@ -63,25 +62,28 @@ static void sg_config_cmd_line(int *argc, char **argv)
       printf("%s\n", SIMGRID_VERSION_STRING);
       shall_exit = 1;
     } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
-      printf
-          ("Description of the configuration accepted by this simulator:\n");
+      printf("Description of the configuration accepted by this simulator:\n");
       xbt_cfg_help(_sg_cfg_set);
       printf(
-"\n"
-"Each of these configurations can be used by adding\n"
-"    --cfg=<option name>:<option value>\n"
-"to the command line.\n"
-"\n"
-"You can also use --help-models to see the details of all models known by this simulator.\n"
-"\n"
-"You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
-"\n"
-"You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
-"\n"
-"You can also use --version to get SimGrid version information.\n"
-"\n"
+          "\n"
+          "Each of these configurations can be used by adding\n"
+          "    --cfg=<option name>:<option value>\n"
+          "to the command line.\n"
+          "\n"
+          "For more information, please refer to:\n"
+          "   --help-aliases for the list of all option aliases.\n"
+          "   --help-logs and --help-log-categories for the details of logging output.\n"
+          "   --help-models for a list of all models known by this simulator.\n"
+          "   --help-tracing for the details of all tracing options known by this simulator.\n"
+          "   --version to get SimGrid version information.\n"
+          "\n"
         );
       shall_exit = 1;
+    } else if (!strcmp(argv[i], "--help-aliases")) {
+      printf("Here is a list of all deprecated option names, with their replacement.\n");
+      xbt_cfg_aliases(_sg_cfg_set);
+      printf("Please consider using the recent names\n");
+      shall_exit = 1;
     } else if (!strcmp(argv[i], "--help-models")) {
       int k;
 
@@ -283,7 +285,7 @@ static void _sg_cfg_cb__weight_S(const char *name, int pos)
   sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
 }
 
-#ifdef HAVE_SMPI
+#if HAVE_SMPI
 /* callback of the mpi collectives */
 static void _sg_cfg_cb__coll(const char *category,
                              s_mpi_coll_description_t * table,
@@ -362,33 +364,27 @@ static void _sg_cfg_cb__test_sleep(const char *name, int pos){
 /* callback of the inclusion path */
 static void _sg_cfg_cb__surf_path(const char *name, int pos)
 {
-  char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
+  char *path = xbt_strdup(xbt_cfg_get_string_at(_sg_cfg_set, name, pos));
   xbt_dynar_push(surf_path, &path);
 }
 
 /* callback to decide if we want to use the model-checking */
-#include "xbt_modinter.h"
+#include "src/xbt_modinter.h"
 
-#ifdef HAVE_MC
+#if HAVE_MC
 extern int _sg_do_model_check;   /* this variable lives in xbt_main until I find a right location for it */
 extern int _sg_do_model_check_record;
 #endif
 
-static void _sg_cfg_cb_model_check_replay(const char *name, int pos)
-{
+static void _sg_cfg_cb_model_check_replay(const char *name, int pos) {
   MC_record_path = xbt_cfg_get_string(_sg_cfg_set, name);
 }
 
-static void _sg_cfg_cb_model_check_record(const char *name, int pos)
-{
-#ifdef HAVE_MC
+#if HAVE_MC
+static void _sg_cfg_cb_model_check_record(const char *name, int pos) {
   _sg_do_model_check_record = xbt_cfg_get_boolean(_sg_cfg_set, name);
-#else
-  if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
-    xbt_die("You tried to activate the model-checking record from the command line, but it was not compiled in. Change your settings in cmake, recompile and try again");
-  }
-#endif
 }
+#endif
 
 extern int _sg_do_verbose_exit;
 
@@ -456,7 +452,7 @@ static void _sg_cfg_cb__surf_network_coordinates(const char *name,
   int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
   if (val) {
     if (!already_set) {
-      COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
+      COORD_HOST_LEVEL = sg_host_extension_create(xbt_dynar_free_voidp);
       COORD_ASR_LEVEL  = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
     }
     already_set = 1;
@@ -500,203 +496,195 @@ void sg_config_init(int *argc, char **argv)
     describe_model(description, surf_plugin_description,
                    "plugin", "The plugins");
     xbt_cfg_register(&_sg_cfg_set, "plugin", description,
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__plugin, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__plugin);
 
-    describe_model(description, surf_cpu_model_description,
-                   "model", "The model to use for the CPU");
-    xbt_cfg_register(&_sg_cfg_set, "cpu/model", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
+    describe_model(description, surf_cpu_model_description, "model", "The model to use for the CPU");
+    xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model);
     xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/model", "Cas01");
 
-    describe_model(description, surf_optimization_mode_description,
-                   "optimization mode",
-                   "The optimization modes to use for the CPU");
-    xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
+    describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the CPU");
+    xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode);
     xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/optim", "Lazy");
 
-    describe_model(description, surf_storage_model_description,
-                   "model", "The model to use for the storage");
-    xbt_cfg_register(&_sg_cfg_set, "storage/model", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
+    describe_model(description, surf_storage_model_description, "model", "The model to use for the storage");
+    xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode);
     xbt_cfg_setdefault_string(_sg_cfg_set, "storage/model", "default");
 
-    describe_model(description, surf_network_model_description,
-                   "model", "The model to use for the network");
-    xbt_cfg_register(&_sg_cfg_set, "network/model", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model, NULL);
+    describe_model(description, surf_network_model_description, "model", "The model to use for the network");
+    xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model);
     xbt_cfg_setdefault_string(_sg_cfg_set, "network/model", "LV08");
 
-    describe_model(description, surf_optimization_mode_description,
-                   "optimization mode",
-                   "The optimization modes to use for the network");
-    xbt_cfg_register(&_sg_cfg_set, "network/optim", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
+    describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the network");
+    xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode);
     xbt_cfg_setdefault_string(_sg_cfg_set, "network/optim", "Lazy");
 
-    describe_model(description, surf_host_model_description,
-                   "model", "The model to use for the host");
-    xbt_cfg_register(&_sg_cfg_set, "host/model", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__host_model, NULL);
+    describe_model(description, surf_host_model_description, "model", "The model to use for the host");
+    xbt_cfg_register(&_sg_cfg_set, "host/model", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__host_model);
     xbt_cfg_setdefault_string(_sg_cfg_set, "host/model", "default");
 
-    describe_model(description, surf_vm_model_description,
-                   "model", "The model to use for the vm");
-    xbt_cfg_register(&_sg_cfg_set, "vm/model", description,
-                     xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__vm_model, NULL);
+    describe_model(description, surf_vm_model_description, "model", "The model to use for the vm");
+    xbt_cfg_register(&_sg_cfg_set, "vm/model", description, xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__vm_model);
     xbt_cfg_setdefault_string(_sg_cfg_set, "vm/model", "default");
 
     xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
                      "Size of the biggest TCP window (cat /proc/sys/net/ipv4/tcp_[rw]mem for recv/send window; Use the last given value, which is the max window size)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma);
     xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
 
-    xbt_cfg_register(&_sg_cfg_set, "surf/precision",
-                     "Numerical precision used when updating simulation times (hence this value is expressed in seconds)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__surf_precision, NULL);
+    xbt_cfg_register(&_sg_cfg_set, "surf/precision", "Numerical precision used when updating simulation times (in seconds)",
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__surf_precision);
     xbt_cfg_setdefault_double(_sg_cfg_set, "surf/precision", 0.00001);
 
     xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
-                     "Numerical precision used when computing resource sharing (hence this value is expressed in ops/sec or bytes/sec)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
+                     "Numerical precision used when computing resource sharing (in ops/sec or bytes/sec)",
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision);
     xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
 
     /* The parameters of network models */
 
-    xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
-                     "Minimum gap between two overlapping sends",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap, NULL);
+    xbt_cfg_register(&_sg_cfg_set, "network/sender_gap", "Minimum gap between two overlapping sends",
+        xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap);
     /* real default for "network/sender_gap" is set in network_smpi.cpp */
     xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", NAN);
 
     xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
                      "Correction factor to apply to the provided latency (default value set by network model)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor);
     xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
 
     xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
                      "Correction factor to apply to the provided bandwidth (default value set by network model)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor);
     xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
 
     xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
                      "Correction factor to apply to the weight of competing streams (default value set by network model)",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S);
     /* real default for "network/weight_S" is set in network_*.cpp */
     xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", NAN);
 
     /* Inclusion path */
     xbt_cfg_register(&_sg_cfg_set, "path",
                      "Lookup path for inclusions in platform and deployment XML files",
-                     xbt_cfgelm_string, 1, 0, _sg_cfg_cb__surf_path, NULL);
+                     xbt_cfgelm_string, 1, 0, _sg_cfg_cb__surf_path);
 
     xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
                      "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
 
     xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
                      "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
 
-    /* Replay (this part is enabled event if MC it disabled) */
+    /* Replay (this part is enabled even if MC it disabled) */
     xbt_cfg_register(&_sg_cfg_set, "model-check/replay",
-      "Uenable replay mode with the given path",
-      xbt_cfgelm_string, 0, 1, _sg_cfg_cb_model_check_replay, NULL);
+      "Enable replay mode with the given path", xbt_cfgelm_string, 0, 1, _sg_cfg_cb_model_check_replay);
 
-#ifdef HAVE_MC
+#if HAVE_MC
     /* do model-checking-record */
     xbt_cfg_register(&_sg_cfg_set, "model-check/record",
                      "Record the model-checking paths",
-                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_model_check_record, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_model_check_record);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/record", "no");
 
     /* do stateful model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
                      "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
                      "If value=1, one checkpoint is saved for each step => faster verification, but huge memory consumption; higher values are good compromises between speed and memory consumption.",
-                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_checkpoint, NULL);
+                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_checkpoint);
     xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
 
     /* do stateful model-checking */
-    xbt_cfg_register(&_sg_cfg_set, "model-check/sparse-checkpoint",
+    xbt_cfg_register(&_sg_cfg_set, "model-check/sparse_checkpoint",
                      "Use sparse per-page snapshots.",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_sparse_checkpoint, NULL);
-    xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/sparse-checkpoint", "no");
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_sparse_checkpoint);
+    xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/sparse_checkpoint", "no");
+
+    /* do stateful model-checking */
+    xbt_cfg_register(&_sg_cfg_set, "model-check/soft-dirty",
+                     "Use sparse per-page snapshots.",
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_soft_dirty);
+    xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/soft-dirty", "no");
+
+    xbt_cfg_register(&_sg_cfg_set, "model-check/ksm",
+                     "Kernel same-page merging",
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_ksm);
+    xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/ksm", "no");
 
     /* do liveness model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/property",
                      "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
-                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_property, NULL);
+                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_property);
     xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
 
     /* do communications determinism model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/communications_determinism",
                      "Enable/disable the detection of determinism in the communications schemes",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_comms_determinism, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_comms_determinism);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/communications_determinism", "no");
 
     /* do send determinism model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/send_determinism",
                      "Enable/disable the detection of send-determinism in the communications schemes",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_send_determinism, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_send_determinism);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/send_determinism", "no");
 
     /* Specify the kind of model-checking reduction */
     xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
                      "Specify the kind of exploration reduction (either none or DPOR)",
-                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_reduce, NULL);
+                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_reduce);
     xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
 
     /* Enable/disable timeout for wait requests with model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
                      "Enable/Disable timeout for wait requests",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_timeout, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_timeout);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
 
     /* Enable/disable global hash computation with model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/hash",
-                     "Enable/Disable state hash for state comparison (exprimental)",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_hash, NULL);
+                     "Enable/Disable state hash for state comparison (experimental)",
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_hash);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/hash", "no");
 
     /* Set max depth exploration */
     /* Currently, this option cannot be used. */
     xbt_cfg_register(&_sg_cfg_set, "model-check/snapshot_fds",
                      "Whether file descriptors must be snapshoted",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_snapshot_fds, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_snapshot_fds);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/snapshot_fds", "no");
 
     /* Set max depth exploration */
     xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
                      "Specify the max depth of exploration (default : 1000)",
-                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_max_depth, NULL);
+                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_max_depth);
     xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
 
     /* Set number of visited state stored for state comparison reduction*/
     xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
                      "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
-                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_visited, NULL);
+                     xbt_cfgelm_int, 1, 1, _mc_cfg_cb_visited);
     xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
 
     /* Set file name for dot output of graph state */
     xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
                      "Specify the name of dot file corresponding to graph state",
-                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_dot_output, NULL);
+                     xbt_cfgelm_string, 1, 1, _mc_cfg_cb_dot_output);
     xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
 
      /* Enable/disable non progressive cycles detection with model-checking */
     xbt_cfg_register(&_sg_cfg_set, "model-check/termination",
                      "Enable/Disable non progressive cycle detection",
-                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_termination, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_termination);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/termination", "no");
 #endif
 
     /* do verbose-exit */
     xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
                      "Activate the \"do nothing\" mode in Ctrl-C",
-                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_verbose_exit, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_verbose_exit);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
 
     /* context factory */
@@ -706,24 +694,24 @@ void sg_config_init(int *argc, char **argv)
         sprintf(description,
                 "Context factory to use in SIMIX. Possible values: %s",
                 dflt_ctx_fact);
-#ifdef CONTEXT_UCONTEXT
+#if HAVE_UCONTEXT_CONTEXTS
       dflt_ctx_fact = "ucontext";
       p += sprintf(p, ", %s", dflt_ctx_fact);
 #endif
-#ifdef HAVE_RAWCTX
+#if HAVE_RAW_CONTEXTS
       dflt_ctx_fact = "raw";
       p += sprintf(p, ", %s", dflt_ctx_fact);
 #endif
       sprintf(p, ".");
     }
     xbt_cfg_register(&_sg_cfg_set, "contexts/factory", description,
-                     xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory, NULL);
+                     xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory);
     xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/factory", dflt_ctx_fact);
 
     /* stack size of contexts in KiB */
     xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
                      "Stack size of contexts in KiB",
-                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size, NULL);
+                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size);
     xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/stack_size", 8*1024);
     /* No, it was not set yet (the above setdefault() changed this to 1). */
     smx_context_stack_size_was_set = 0;
@@ -731,8 +719,8 @@ void sg_config_init(int *argc, char **argv)
     /* guard size for contexts stacks in memory pages */
     xbt_cfg_register(&_sg_cfg_set, "contexts/guard_size",
                      "Guard size for contexts stacks in memory pages",
-                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_guard_size, NULL);
-#if defined(_XBT_WIN32) || (PTH_STACKGROWTH != -1)
+                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_guard_size);
+#if defined(_WIN32) || (PTH_STACKGROWTH != -1)
     xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 0);
 #else
     xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 1);
@@ -743,20 +731,20 @@ void sg_config_init(int *argc, char **argv)
     /* number of parallel threads for user processes */
     xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
                      "Number of parallel threads used to execute user contexts",
-                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads, NULL);
+                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads);
     xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/nthreads", 1);
 
     /* minimal number of user contexts to be run in parallel */
     xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
                      "Minimal number of user contexts to be run in parallel (raw contexts only)",
-                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold, NULL);
+                     xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold);
     xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/parallel_threshold", 2);
 
     /* synchronization mode for parallel user contexts */
     xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
                      "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
-                     xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode, NULL);
-#ifdef HAVE_FUTEX_H
+                     xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode);
+#if HAVE_FUTEX_H
     xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "futex");
 #else //No futex on mac and posix is unimplememted yet
     xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
@@ -764,18 +752,18 @@ void sg_config_init(int *argc, char **argv)
 
     xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
                      "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
-                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
 
     xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
                      "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
-                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_crosstraffic, NULL);
-    xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
+                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_crosstraffic);
+    xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "yes");
 
-#ifdef HAVE_NS3
+#if HAVE_NS3
     xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
                      "The ns3 tcp model can be : NewReno or Reno or Tahoe",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
 #endif
 
@@ -784,160 +772,159 @@ void sg_config_init(int *argc, char **argv)
     //test is if( size >= thresholdN ) return valueN;
     //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
     //  or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
-    // SMPI model can be used without enable_smpi, so keep this the ifdef.
+    // SMPI model can be used without enable_smpi, so keep this out of the ifdef.
     xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
                      "Bandwidth factors for smpi.",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/bw_factor", "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;1426:0.608902;732:0.341987;257:0.338112;0:0.812084");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
                      "Latency factors for smpi.",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/lat_factor", "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;1426:1.61075;732:1.9503;257:1.95341;0:2.01467");
     
     xbt_cfg_register(&_sg_cfg_set, "smpi/IB_penalty_factors",
                      "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/IB_penalty_factors", "0.965;0.925;1.35");
     
-#ifdef HAVE_SMPI
+#if HAVE_SMPI
     xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
                      "Power of the host running the simulation (in flop/s). Used to bench the operations.",
-                     xbt_cfgelm_double, 1, 1, NULL, NULL);
+                     xbt_cfgelm_double, 1, 1, NULL);
     xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/running_power", 20000.0);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
                      "Boolean indicating whether we should display the timing after simulation.",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/simulate_computation",
                      "Boolean indicating whether the computational part of the simulated application should be simulated.",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/simulate_computation", "yes");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
                      "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
                      "Minimal computation time (in seconds) not discarded, or -1 for infinity.",
-                     xbt_cfgelm_double, 1, 1, NULL, NULL);
+                     xbt_cfgelm_double, 1, 1, NULL);
     xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
 
-    xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
+    xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thresh",
                      "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
-                     xbt_cfgelm_int, 1, 1, NULL, NULL);
-    xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thres", 0);
+                     xbt_cfgelm_int, 1, 1, NULL);
+    xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thresh", 0);
 
-    xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
+    xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thresh",
                      "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
-                     xbt_cfgelm_int, 1, 1, NULL, NULL);
-    xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thres", 65536);
+                     xbt_cfgelm_int, 1, 1, NULL);
+    xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thresh", 65536);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/privatize_global_variables",
                      "Boolean indicating whether we should privatize global variable at runtime.",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/privatize_global_variables", "no");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/os",
                      "Small messages timings (MPI_Send minimum time for small messages)",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
                      "Small messages timings (MPI_Isend minimum time for small messages)",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/or",
                      "Small messages timings (MPI_Recv minimum time for small messages)",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
                      "Minimum time to inject inside a call to MPI_Iprobe",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__iprobe_sleep, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__iprobe_sleep);
     xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/test",
                      "Minimum time to inject inside a call to MPI_Test",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__test_sleep, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__test_sleep);
     xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/test", 1e-4);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/wtime",
                      "Minimum time to inject inside a call to MPI_Wtime",
-                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__wtime_sleep, NULL);
+                     xbt_cfgelm_double, 1, 1, _sg_cfg_cb__wtime_sleep);
     xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/wtime", 0.0);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
                      "Which collective selector to use",
-                     xbt_cfgelm_string, 1, 1, NULL, NULL);
+                     xbt_cfgelm_string, 1, 1, NULL);
     xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
                      "Which collective to use for gather",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_gather, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_gather);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
                      "Which collective to use for allgather",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgather, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgather);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
                      "Which collective to use for barrier",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_barrier, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_barrier);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
                      "Which collective to use for reduce_scatter",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce_scatter, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce_scatter);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
                      "Which collective to use for scatter",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_scatter, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_scatter);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
                      "Which collective to use for allgatherv",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgatherv, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgatherv);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
                      "Which collective to use for allreduce",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allreduce, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allreduce);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
                      "Which collective to use for alltoall",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoall, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoall);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
                      "Which collective to use for alltoallv",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoallv, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoallv);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
                      "Which collective to use for bcast",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_bcast, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_bcast);
 
     xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
                      "Which collective to use for reduce",
-                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce, NULL);
+                     xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce);
 #endif // HAVE_SMPI
 
     xbt_cfg_register(&_sg_cfg_set, "exception/cutpath",
                      "\"yes\" or \"no\". \"yes\" will cut all path information from call traces, used e.g. in exceptions.",
-                     xbt_cfgelm_boolean, 1, 1, NULL, NULL);
+                     xbt_cfgelm_boolean, 1, 1, NULL);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "exception/cutpath", "no");
 
     xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
                      "\"yes\" or \"no\". \"yes\" enables all the cleanups of SimGrid (XBT,SIMIX,MSG) to be registered with atexit. \"no\" may be useful if your code segfaults when calling the exit function.",
-                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit, NULL);
+                     xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit);
     xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
 
     if (!surf_path) {
       /* retrieves the current directory of the current process */
       const char *initial_path = __surf_get_initial_path();
-      xbt_assert((initial_path),
-                  "__surf_get_initial_path() failed! Can't resolve current Windows directory");
+      xbt_assert((initial_path), "__surf_get_initial_path() failed! Can't resolve current Windows directory");
 
-      surf_path = xbt_dynar_new(sizeof(char *), NULL);
+      surf_path = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
       xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
     }
 
@@ -947,7 +934,6 @@ void sg_config_init(int *argc, char **argv)
     sg_config_cmd_line(argc, argv);
 
     xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
-
   } else {
     XBT_WARN("Call to sg_config_init() after initialization ignored");
   }
@@ -962,75 +948,6 @@ void sg_config_finalize(void)
   _sg_cfg_init_status = 0;
 }
 
-/* Pick the right models for CPU, net and host, and call their model_init_preparse */
-void surf_config_models_setup()
-{
-  const char *host_model_name;
-  const char *vm_model_name;
-  int host_id = -1;
-  int vm_id = -1;
-  char *network_model_name = NULL;
-  char *cpu_model_name = NULL;
-  int storage_id = -1;
-  char *storage_model_name = NULL;
-
-  host_model_name = xbt_cfg_get_string(_sg_cfg_set, "host/model");
-  vm_model_name = xbt_cfg_get_string(_sg_cfg_set, "vm/model");
-  network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
-  cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
-  storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
-
-  /* Check whether we use a net/cpu model differing from the default ones, in which case
-   * we should switch to the "compound" host model to correctly dispatch stuff to
-   * the right net/cpu models.
-   */
-
-  if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
-       !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
-      xbt_cfg_is_default_value(_sg_cfg_set, "host/model")) {
-    host_model_name = "compound";
-    xbt_cfg_set_string(_sg_cfg_set, "host/model", host_model_name);
-  }
-
-  XBT_DEBUG("host model: %s", host_model_name);
-  host_id = find_model_description(surf_host_model_description, host_model_name);
-  if (!strcmp(host_model_name, "compound")) {
-    int network_id = -1;
-    int cpu_id = -1;
-
-    xbt_assert(cpu_model_name,
-                "Set a cpu model to use with the 'compound' host model");
-
-    xbt_assert(network_model_name,
-                "Set a network model to use with the 'compound' host model");
-
-    if(surf_cpu_model_init_preparse){
-      surf_cpu_model_init_preparse();
-    } else {
-      cpu_id =
-          find_model_description(surf_cpu_model_description, cpu_model_name);
-      surf_cpu_model_description[cpu_id].model_init_preparse();
-    }
-
-    network_id =
-        find_model_description(surf_network_model_description,
-                               network_model_name);
-    surf_network_model_description[network_id].model_init_preparse();
-  }
-
-  XBT_DEBUG("Call host_model_init");
-  surf_host_model_description[host_id].model_init_preparse();
-
-  XBT_DEBUG("Call vm_model_init");
-  vm_id = find_model_description(surf_vm_model_description, vm_model_name);
-  surf_vm_model_description[vm_id].model_init_preparse();
-
-  XBT_DEBUG("Call storage_model_init");
-  storage_id = find_model_description(surf_storage_model_description, storage_model_name);
-  surf_storage_model_description[storage_id].model_init_preparse();
-
-}
-
 int sg_cfg_is_default_value(const char *name)
 {
   return xbt_cfg_is_default_value(_sg_cfg_set, name);
@@ -1056,11 +973,6 @@ int sg_cfg_get_boolean(const char* name)
   return xbt_cfg_get_boolean(_sg_cfg_set, name);
 }
 
-void sg_cfg_get_peer(const char *name, char **peer, int *port)
-{
-  xbt_cfg_get_peer(_sg_cfg_set, name, peer, port);
-}
-
 xbt_dynar_t sg_cfg_get_dynar(const char* name)
 {
   return xbt_cfg_get_dynar(_sg_cfg_set, name);