src/surf/surfxml_parseplatf.c

   1 /* Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "xbt/misc.h"
   8 #include "xbt/log.h"
   9 #include "xbt/str.h"
  10 #include "xbt/dict.h"
  11 #include "simgrid/platf.h"
  12 #include "surf/surfxml_parse_private.h"
  13 #include "surf/surf_private.h"
  14
  15 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  16
  17 /*
  18  *  Allow the cluster tag to mess with the parsing buffer.
  19  * (this will probably become obsolete once the cluster tag do not mess with the parsing callbacks directly)
  20  */
  21
  22 /* This buffer is used to store the original buffer before substituting it by out own buffer. Useful for the cluster tag */
  23 static xbt_dynar_t surfxml_bufferstack_stack = NULL;
  24 int surfxml_bufferstack_size = 2048;
  25
  26 static char *old_buff = NULL;
  27
  28 unsigned int surfxml_buffer_stack_stack_ptr;
  29 unsigned int surfxml_buffer_stack_stack[1024];
  30
  31
  32 void surfxml_bufferstack_push(int new)
  33 {
  34   if (!new)
  35     old_buff = surfxml_bufferstack;
  36   else {
  37     xbt_dynar_push(surfxml_bufferstack_stack, &surfxml_bufferstack);
  38     surfxml_bufferstack = xbt_new0(char, surfxml_bufferstack_size);
  39   }
  40 }
  41
  42 void surfxml_bufferstack_pop(int new)
  43 {
  44   if (!new)
  45     surfxml_bufferstack = old_buff;
  46   else {
  47     free(surfxml_bufferstack);
  48     xbt_dynar_pop(surfxml_bufferstack_stack, &surfxml_bufferstack);
  49   }
  50 }
  51
  52 /*
  53  * Pass arguments to parsing callback as structures to save some time (and allow callbacks to ignore some)
  54  */
  55
  56 sg_platf_router_cbarg_t struct_router = NULL;
  57 surf_parsing_cluster_arg_t struct_cluster = NULL;
  58 surf_parsing_peer_arg_t struct_peer = NULL;
  59 surf_parsing_link_arg_t struct_lnk = NULL;
  60
  61
  62 /*
  63  * Trace related stuff
  64  */
  65
  66 xbt_dict_t traces_set_list = NULL;
  67 xbt_dict_t trace_connect_list_host_avail = NULL;
  68 xbt_dict_t trace_connect_list_power = NULL;
  69 xbt_dict_t trace_connect_list_link_avail = NULL;
  70 xbt_dict_t trace_connect_list_bandwidth = NULL;
  71 xbt_dict_t trace_connect_list_latency = NULL;
  72
  73 static double trace_periodicity = -1.0;
  74 static char *trace_file = NULL;
  75 static char *trace_id = NULL;
  76
  77 static void parse_Stag_trace(void)
  78 {
  79   trace_id = xbt_strdup(A_surfxml_trace_id);
  80   trace_file = xbt_strdup(A_surfxml_trace_file);
  81   trace_periodicity = surf_parse_get_double(A_surfxml_trace_periodicity);
  82 }
  83
  84 static void parse_Etag_trace(void)
  85 {
  86   tmgr_trace_t trace;
  87   if (!trace_file || strcmp(trace_file, "") != 0) {
  88     trace = tmgr_trace_new(trace_file);
  89   } else {
  90     if (strcmp(surfxml_pcdata, "") == 0)
  91       trace = NULL;
  92     else
  93       trace =
  94           tmgr_trace_new_from_string(trace_id, surfxml_pcdata,
  95                                      trace_periodicity);
  96   }
  97   xbt_dict_set(traces_set_list, trace_id, (void *) trace, NULL);
  98   xbt_free(trace_file);
  99   trace_file = NULL;
 100   xbt_free(trace_id);
 101   trace_id = NULL;
 102 }
 103
 104 static void parse_Stag_trace_connect(void)
 105 {
 106   xbt_assert(xbt_dict_get_or_null
 107               (traces_set_list, A_surfxml_trace_connect_trace),
 108               "Cannot connect trace %s to %s: trace unknown",
 109               A_surfxml_trace_connect_trace,
 110               A_surfxml_trace_connect_element);
 111
 112   switch (A_surfxml_trace_connect_kind) {
 113   case A_surfxml_trace_connect_kind_HOST_AVAIL:
 114     xbt_dict_set(trace_connect_list_host_avail,
 115                  A_surfxml_trace_connect_trace,
 116                  xbt_strdup(A_surfxml_trace_connect_element), free);
 117     break;
 118   case A_surfxml_trace_connect_kind_POWER:
 119     xbt_dict_set(trace_connect_list_power, A_surfxml_trace_connect_trace,
 120                  xbt_strdup(A_surfxml_trace_connect_element), free);
 121     break;
 122   case A_surfxml_trace_connect_kind_LINK_AVAIL:
 123     xbt_dict_set(trace_connect_list_link_avail,
 124                  A_surfxml_trace_connect_trace,
 125                  xbt_strdup(A_surfxml_trace_connect_element), free);
 126     break;
 127   case A_surfxml_trace_connect_kind_BANDWIDTH:
 128     xbt_dict_set(trace_connect_list_bandwidth,
 129                  A_surfxml_trace_connect_trace,
 130                  xbt_strdup(A_surfxml_trace_connect_element), free);
 131     break;
 132   case A_surfxml_trace_connect_kind_LATENCY:
 133     xbt_dict_set(trace_connect_list_latency, A_surfxml_trace_connect_trace,
 134                  xbt_strdup(A_surfxml_trace_connect_element), free);
 135     break;
 136   default:
 137     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 138             A_surfxml_trace_connect_trace, A_surfxml_trace_connect_element);
 139     break;
 140   }
 141 }
 142
 143 /* Call the right C function when we see the <AS> tags */
 144 static void parse_S_AS(void) {
 145   sg_platf_new_AS_open(A_surfxml_AS_id, A_surfxml_AS_routing);
 146 }
 147 static void parse_E_AS(void) {
 148   sg_platf_new_AS_close();
 149 }
 150
 151 /* Init and free parse data */
 152
 153 static void init_data(void)
 154 {
 155   if (!surfxml_bufferstack_stack)
 156     surfxml_bufferstack_stack = xbt_dynar_new(sizeof(char *), NULL);
 157
 158   traces_set_list = xbt_dict_new();
 159   trace_connect_list_host_avail = xbt_dict_new();
 160   trace_connect_list_power = xbt_dict_new();
 161   trace_connect_list_link_avail = xbt_dict_new();
 162   trace_connect_list_bandwidth = xbt_dict_new();
 163   trace_connect_list_latency = xbt_dict_new();
 164
 165   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_Stag_trace);
 166   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_Etag_trace);
 167   surfxml_add_callback(STag_surfxml_trace_connect_cb_list,
 168              &parse_Stag_trace_connect);
 169
 170   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
 171   surfxml_add_callback(STag_surfxml_AS_cb_list, &parse_S_AS);
 172   surfxml_add_callback(ETag_surfxml_AS_cb_list, &parse_E_AS);
 173 }
 174
 175 static void free_data(void)
 176 {
 177   xbt_dict_free(&trace_connect_list_host_avail);
 178   xbt_dict_free(&trace_connect_list_power);
 179   xbt_dict_free(&trace_connect_list_link_avail);
 180   xbt_dict_free(&trace_connect_list_bandwidth);
 181   xbt_dict_free(&trace_connect_list_latency);
 182   xbt_dict_free(&traces_set_list);
 183   xbt_dict_free(&random_data_list);
 184   xbt_dynar_free(&surfxml_bufferstack_stack);
 185 }
 186
 187 /* This function acts as a main in the parsing area. */
 188 void parse_platform_file(const char *file)
 189 {
 190   int parse_status;
 191
 192   surf_parse_reset_callbacks();
 193
 194   /* Register classical callbacks */
 195   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties_XML);
 196   surf_parse_add_callback_config();
 197
 198   surfxml_buffer_stack_stack_ptr = 1;
 199   surfxml_buffer_stack_stack[0] = 0;
 200
 201   surf_parse_open(file);
 202   init_data();
 203   parse_status = surf_parse();
 204   free_data();
 205   surf_parse_close();
 206   if (parse_status)
 207     xbt_die("Parse error in %s", file);
 208
 209   surf_config_models_create_elms();
 210 }
 211