src/bindings/lua/simgrid_lua.c

   1 /* SimGrid Lua bindings                                                     */
   2
   3 /* Copyright (c) 2010. The SimGrid Team.
   4  * All rights reserved.                                                     */
   5
   6 /* This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the license (GNU LGPL) which comes with this package. */
   8
   9 #include <stdio.h>
  10 #include <lauxlib.h>
  11 #include <lualib.h>
  12 #include "msg/msg.h"
  13 #include "xbt.h"
  14
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
  16
  17 #define TASK_MODULE_NAME "simgrid.Task"
  18 #define HOST_MODULE_NAME "simgrid.Host"
  19 // Surf ( bypass XML )
  20 #define LINK_MODULE_NAME "simgrid.Link"
  21 #define ROUTE_MODULE_NAME "simgrid.Route"
  22 #undef BYPASS_MODEL
  23
  24 /* ********************************************************************************* */
  25 /*                            helper functions                                       */
  26 /* ********************************************************************************* */
  27
  28 static void stackDump (const char *msg, lua_State *L) {
  29   char buff[2048];
  30   char *p=buff;
  31   int i;
  32   int top = lua_gettop(L);
  33
  34   fflush(stdout);
  35   p+=sprintf(p,"STACK(top=%d): ",top);
  36
  37   for (i = 1; i <= top; i++) {  /* repeat for each level */
  38     int t = lua_type(L, i);
  39     switch (t) {
  40
  41     case LUA_TSTRING:  /* strings */
  42       p+=sprintf(p,"`%s'", lua_tostring(L, i));
  43       break;
  44
  45     case LUA_TBOOLEAN:  /* booleans */
  46       p+=sprintf(p,lua_toboolean(L, i) ? "true" : "false");
  47       break;
  48
  49     case LUA_TNUMBER:  /* numbers */
  50       p+=sprintf(p,"%g", lua_tonumber(L, i));
  51       break;
  52
  53     case LUA_TTABLE:
  54       p+=sprintf(p, "Table");
  55       break;
  56
  57     default:  /* other values */
  58       p+=sprintf(p, "???");
  59 /*      if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
  60         p+=sprintf(p,"task");
  61       } else {
  62         p+=printf(p,"%s", lua_typename(L, t));
  63       }*/
  64       break;
  65
  66     }
  67     p+=sprintf(p,"  ");  /* put a separator */
  68   }
  69   INFO2("%s%s",msg,buff);
  70 }
  71
  72 /** @brief ensures that a userdata on the stack is a task and returns the pointer inside the userdata */
  73 static m_task_t checkTask (lua_State *L,int index) {
  74   m_task_t *pi,tk;
  75   luaL_checktype(L,index,LUA_TTABLE);
  76   lua_getfield(L,index,"__simgrid_task");
  77   pi = (m_task_t*)luaL_checkudata(L,-1,TASK_MODULE_NAME);
  78   if(pi == NULL)
  79          luaL_typerror(L,index,TASK_MODULE_NAME);
  80   tk = *pi;
  81   if(!tk)
  82          luaL_error(L,"null Task");
  83   lua_pop(L,1);
  84   return  tk;
  85 }
  86 /* ********************************************************************************* */
  87 /*                           wrapper functions                                       */
  88 /* ********************************************************************************* */
  89
  90 /**
  91  * A task is either something to compute somewhere, or something to exchange between two hosts (or both).
  92  * It is defined by a computing amount and a message size.
  93  *
  94  */
  95
  96 /* *              * *
  97  * * Constructors * *
  98  * *              * */
  99 /**
 100  * Construct an new task with the specified processing amount and amount
 101  * of data needed.
 102  *
 103  * @param name  Task's name
 104  *
 105  * @param computeDuration       A value of the processing amount (in flop) needed to process the task.
 106  *                              If 0, then it cannot be executed with the execute() method.
 107  *                              This value has to be >= 0.
 108  *
 109  * @param messageSize           A value of amount of data (in bytes) needed to transfert this task.
 110  *                              If 0, then it cannot be transfered with the get() and put() methods.
 111  *                              This value has to be >= 0.
 112  */
 113 static int Task_new(lua_State* L) {
 114           const char *name=luaL_checkstring(L,1);
 115           int comp_size = luaL_checkint(L,2);
 116           int msg_size = luaL_checkint(L,3);
 117           m_task_t msg_task = MSG_task_create(name,comp_size,msg_size,NULL);
 118           lua_newtable (L); /* create a table, put the userdata on top of it */
 119           m_task_t *lua_task = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
 120           *lua_task = msg_task;
 121           luaL_getmetatable(L,TASK_MODULE_NAME);
 122           lua_setmetatable(L,-2);
 123           lua_setfield (L, -2, "__simgrid_task"); /* put the userdata as field of the table */
 124           /* remove the args from the stack */
 125           lua_remove(L,1);
 126           lua_remove(L,1);
 127           lua_remove(L,1);
 128           return 1;
 129 }
 130
 131 static int Task_get_name(lua_State *L) {
 132   m_task_t tk = checkTask(L,-1);
 133   lua_pushstring(L,MSG_task_get_name(tk));
 134   return 1;
 135 }
 136
 137 static int Task_computation_duration(lua_State *L){
 138   m_task_t tk = checkTask(L,-1);
 139   lua_pushnumber(L,MSG_task_get_compute_duration (tk));
 140   return 1;
 141 }
 142
 143 static int Task_execute(lua_State *L){
 144   m_task_t tk = checkTask(L,-1);
 145   int res = MSG_task_execute(tk);
 146   lua_pushnumber(L,res);
 147   return 1;
 148 }
 149
 150 static int Task_destroy(lua_State *L) {
 151   m_task_t tk = checkTask(L,-1);
 152   int res = MSG_task_destroy(tk);
 153   lua_pushnumber(L,res);
 154   return 1;
 155 }
 156
 157 static int Task_send(lua_State *L)  {
 158   //stackDump("send ",L);
 159   m_task_t tk = checkTask(L,-2);
 160   const char *mailbox = luaL_checkstring(L,-1);
 161   lua_pop(L,1); // remove the string so that the task is on top of it
 162   MSG_task_set_data(tk,L); // Copy my stack into the task, so that the receiver can copy the lua task directly
 163   MSG_error_t res = MSG_task_send(tk,mailbox);
 164   while (MSG_task_get_data(tk)!=NULL) // Don't mess up with my stack: the receiver didn't copy the data yet
 165     MSG_process_sleep(0); // yield
 166
 167   if (res != MSG_OK) switch(res) {
 168     case MSG_TIMEOUT :
 169       ERROR0("MSG_task_send failed : Timeout");
 170       break;
 171     case MSG_TRANSFER_FAILURE :
 172       ERROR0("MSG_task_send failed : Transfer Failure");
 173       break;
 174     case MSG_HOST_FAILURE :
 175       ERROR0("MSG_task_send failed : Host Failure ");
 176       break;
 177     default :
 178       ERROR0("MSG_task_send failed : Unexpected error , please report this bug");
 179       break;
 180     }
 181   return 0;
 182 }
 183
 184 static int Task_recv(lua_State *L)  {
 185   m_task_t tk = NULL;
 186   const char *mailbox = luaL_checkstring(L,-1);
 187   MSG_error_t res = MSG_task_receive(&tk,mailbox);
 188
 189   lua_State *sender_stack = MSG_task_get_data(tk);
 190   lua_xmove(sender_stack,L,1); // copy the data directly from sender's stack
 191   MSG_task_set_data(tk,NULL);
 192
 193   if(res != MSG_OK) switch(res){
 194           case MSG_TIMEOUT :
 195                   ERROR0("MSG_task_receive failed : Timeout");
 196                   break;
 197           case MSG_TRANSFER_FAILURE :
 198                   ERROR0("MSG_task_receive failed : Transfer Failure");
 199                   break;
 200           case MSG_HOST_FAILURE :
 201                   ERROR0("MSG_task_receive failed : Host Failure ");
 202                   break;
 203           default :
 204                   ERROR0("MSG_task_receive failed : Unexpected error , please report this bug");
 205                   break;
 206                   }
 207
 208   return 1;
 209 }
 210
 211 static const luaL_reg Task_methods[] = {
 212     {"new",   Task_new},
 213     {"name",  Task_get_name},
 214     {"computation_duration",  Task_computation_duration},
 215     {"execute", Task_execute},
 216     {"destroy", Task_destroy},
 217     {"send",    Task_send},
 218     {"recv",    Task_recv},
 219     {0,0}
 220 };
 221 static int Task_gc(lua_State *L) {
 222   m_task_t tk=checkTask(L,-1);
 223   if (tk) MSG_task_destroy(tk);
 224   return 0;
 225 }
 226
 227 static int Task_tostring(lua_State *L) {
 228   lua_pushfstring(L, "Task :%p",lua_touserdata(L,1));
 229   return 1;
 230 }
 231
 232 static const luaL_reg Task_meta[] = {
 233     {"__gc",  Task_gc},
 234     {"__tostring",  Task_tostring},
 235     {0,0}
 236 };
 237
 238 /**
 239  * Host
 240  */
 241 static m_host_t checkHost (lua_State *L,int index) {
 242   m_host_t *pi,ht;
 243   luaL_checktype(L,index,LUA_TTABLE);
 244   lua_getfield(L,index,"__simgrid_host");
 245   pi = (m_host_t*)luaL_checkudata(L,-1,HOST_MODULE_NAME);
 246   if(pi == NULL)
 247          luaL_typerror(L,index,HOST_MODULE_NAME);
 248   ht = *pi;
 249   if(!ht)
 250          luaL_error(L,"null Host");
 251   lua_pop(L,1);
 252   return  ht;
 253 }
 254
 255 static int Host_get_by_name(lua_State *L)
 256 {
 257         const char *name=luaL_checkstring(L,1);
 258         DEBUG0("Getting Host from name...");
 259         m_host_t msg_host = MSG_get_host_by_name(name);
 260         if (!msg_host)
 261                 {
 262                 luaL_error(L,"null Host : MSG_get_host_by_name failled");
 263                 }
 264     lua_newtable (L); /* create a table, put the userdata on top of it */
 265         m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
 266         *lua_host = msg_host;
 267         luaL_getmetatable(L,HOST_MODULE_NAME);
 268         lua_setmetatable(L,-2);
 269         lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
 270         /* remove the args from the stack */
 271         lua_remove(L,1);
 272         return 1;
 273 }
 274
 275
 276 static int Host_get_name(lua_State *L) {
 277   m_host_t ht = checkHost(L,-1);
 278   lua_pushstring(L,MSG_host_get_name(ht));
 279   return 1;
 280 }
 281
 282 static int Host_number(lua_State *L) {
 283   lua_pushnumber(L,MSG_get_host_number());
 284   return 1;
 285 }
 286
 287 static int Host_at(lua_State *L)
 288 {
 289         int index = luaL_checkinteger(L,1);
 290         m_host_t host = MSG_get_host_table()[index-1]; // lua indexing start by 1 (lua[1] <=> C[0])
 291         lua_newtable (L); /* create a table, put the userdata on top of it */
 292         m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
 293         *lua_host = host;
 294         luaL_getmetatable(L,HOST_MODULE_NAME);
 295         lua_setmetatable(L,-2);
 296         lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
 297         return 1;
 298
 299 }
 300
 301 /*****************************************************************************************
 302                                                              * BYPASS XML SURF Methods *
 303                                                                  ***************************
 304                                                                  ***************************
 305 ******************************************************************************************/
 306 #include "surf/surfxml_parse.h" /* to override surf_parse and bypass the parser */
 307 #include "surf/surf_private.h"
 308 typedef struct t_host_attr
 309 {
 310         //platform attribute
 311         // Mandatory attributes
 312         const char* id;
 313         double power_peak;
 314         // Optional attributes
 315         double power_scale;
 316         const char *power_trace;
 317         int state_initial;
 318         const char *state_trace;
 319         //deployment attribute
 320         const char* function;
 321         xbt_dynar_t args_list;
 322 }host_attr,*p_host_attr;
 323
 324 typedef struct t_link_attr
 325 {
 326         const char* id;
 327         double bandwidth;
 328         double latency;
 329 }link_attr,*p_link_attr;
 330
 331 typedef struct t_route_attr
 332 {
 333         const char *src_id;
 334         const char *dest_id;
 335         xbt_dynar_t links_id;
 336
 337 }route_attr,*p_route_attr;
 338
 339 //using xbt_dynar_t :
 340 static xbt_dynar_t host_list_d ;
 341 static xbt_dynar_t link_list_d ;
 342 static xbt_dynar_t route_list_d ;
 343
 344
 345 //create resource
 346
 347 static void create_host(const char* id,double power_peak,double power_sc,
 348                                                 const char* power_tr,int state_init,
 349                                                 const char* state_tr)
 350 {
 351
 352         double power_scale = 1.0;
 353         tmgr_trace_t power_trace = NULL;
 354         e_surf_resource_state_t state_initial;
 355         tmgr_trace_t state_trace;
 356         if(power_sc) // !=0
 357                 power_scale = power_sc;
 358         if (state_init == -1)
 359                 state_initial = SURF_RESOURCE_OFF;
 360         else
 361                 state_initial = SURF_RESOURCE_ON;
 362         if(power_tr)
 363                 power_trace = tmgr_trace_new(power_tr);
 364         else
 365                 power_trace = tmgr_trace_new("");
 366         if(state_tr)
 367                 state_trace = tmgr_trace_new(state_tr);
 368         else
 369                 state_trace = tmgr_trace_new("");
 370         current_property_set = xbt_dict_new();
 371         surf_host_create_resource(xbt_strdup(id), power_peak, power_scale,
 372                                                power_trace, state_initial, state_trace, current_property_set);
 373
 374 }
 375
 376 static int Host_new(lua_State *L)
 377 {
 378
 379         if(xbt_dynar_is_empty(host_list_d))
 380                 host_list_d = xbt_dynar_new(sizeof(p_host_attr), &xbt_free_ref);
 381
 382         p_host_attr host;
 383         const char * id;
 384         const char *power_trace;
 385         const char *state_trace;
 386         double power,power_scale;
 387         int state_initial;
 388         //get values from the table passed as argument
 389     if (lua_istable(L,-1)) {
 390
 391             // get Id Value
 392             lua_pushstring(L,"id");
 393             lua_gettable(L, -2 );
 394             id = lua_tostring(L,-1);
 395             lua_pop(L,1);
 396
 397             // get power value
 398             lua_pushstring(L,"power");
 399             lua_gettable(L, -2 );
 400             power = lua_tonumber(L,-1);
 401             lua_pop(L,1);
 402
 403             //get power_scale
 404             lua_pushstring(L,"power_scale");
 405             lua_gettable(L, -2 );
 406             power_scale = lua_tonumber(L,-1);
 407             lua_pop(L,1);
 408
 409             //get power_trace
 410             lua_pushstring(L,"power_trace");
 411             lua_gettable(L, -2 );
 412             power_trace = lua_tostring(L,-1);
 413             lua_pop(L,1);
 414
 415             //get state initial
 416             lua_pushstring(L,"state_initial");
 417             lua_gettable(L, -2 );
 418             state_initial = lua_tonumber(L,-1);
 419             lua_pop(L,1);
 420
 421             //get trace state
 422             lua_pushstring(L,"state_trace");
 423             lua_gettable(L, -2 );
 424             state_trace = lua_tostring(L,-1);
 425             lua_pop(L,1);
 426
 427     } else {
 428             ERROR0("Bad Arguments to create host, Should be a table with named arguments");
 429             return -1;
 430     }
 431
 432             host = malloc(sizeof(host_attr));
 433                 host->id = id;
 434                 host->power_peak = power;
 435                 host->power_scale = power_scale;
 436                 host->power_trace = power_trace;
 437                 host->state_initial = state_initial;
 438                 host->state_trace = state_trace;
 439                 host->function = NULL;
 440                 xbt_dynar_push(host_list_d, &host);
 441
 442     return 0;
 443
 444 }
 445
 446 static int Link_new(lua_State *L) // (id,bandwidth,latency)
 447 {
 448         if(xbt_dynar_is_empty(link_list_d))
 449                 link_list_d = xbt_dynar_new(sizeof(p_link_attr), &xbt_free_ref);
 450
 451         const char* id;
 452         double bandwidth,latency;
 453         //get values from the table passed as argument
 454         if (lua_istable(L,-1)) {
 455                     // get Id Value
 456                     lua_pushstring(L,"id");
 457                     lua_gettable(L, -2 );
 458                     id = lua_tostring(L,-1);
 459                     lua_pop(L,1);
 460
 461                     // get bandwidth value
 462                     lua_pushstring(L,"bandwidth");
 463                     lua_gettable(L, -2 );
 464                     bandwidth = lua_tonumber(L,-1);
 465                     lua_pop(L,1);
 466
 467                     //get latency value
 468                     lua_pushstring(L,"latency");
 469                     lua_gettable(L, -2 );
 470                     latency = lua_tonumber(L,-1);
 471                     lua_pop(L,1);
 472
 473             } else {
 474                     ERROR0("Bad Arguments to create link, Should be a table with named arguments");
 475                     return -1;
 476             }
 477
 478         p_link_attr link = malloc(sizeof(link_attr));
 479         link->id = id;
 480         link->bandwidth = bandwidth;
 481         link->latency = latency;
 482         xbt_dynar_push(link_list_d,&link);
 483         return 0;
 484 }
 485
 486 static int Route_new(lua_State *L) // (src_id,dest_id,links_number,link_table)
 487 {
 488         if(xbt_dynar_is_empty(route_list_d))
 489                 route_list_d = xbt_dynar_new(sizeof(p_route_attr), &xbt_free_ref);
 490         const char * link_id;
 491         p_route_attr route = malloc(sizeof(route_attr));
 492         route->src_id = luaL_checkstring(L,1);
 493         route->dest_id = luaL_checkstring(L,2);
 494         route->links_id = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 495         lua_pushnil(L);
 496         while (lua_next(L,3) != 0) {
 497                 link_id = lua_tostring(L, -1);
 498                 xbt_dynar_push(route->links_id, &link_id);
 499             DEBUG2("index = %f , Link_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
 500             lua_pop(L, 1);
 501         }
 502         lua_pop(L, 1);
 503
 504         //add route to platform's route list
 505         xbt_dynar_push(route_list_d,&route);
 506         return 0;
 507 }
 508
 509 static int Host_set_function(lua_State *L) //(host,function,nb_args,list_args)
 510 {
 511         // look for the index of host in host_list
 512         const char *host_id = luaL_checkstring(L,1);
 513         const char* argument;
 514         unsigned int i;
 515         p_host_attr p_host;
 516
 517         xbt_dynar_foreach(host_list_d,i,p_host)
 518         {
 519                 if(p_host->id == host_id)
 520                 {
 521                         p_host->function = luaL_checkstring(L,2);
 522                         p_host->args_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 523                         // fill the args list
 524                         lua_pushnil(L);
 525                         int j = 0;
 526                         while (lua_next(L,3) != 0) {
 527                                         argument = lua_tostring(L, -1);
 528                                         xbt_dynar_push(p_host->args_list, &argument);
 529                                     DEBUG2("index = %f , Arg_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
 530                                     j++;
 531                                     lua_pop(L, 1);
 532                                 }
 533                         lua_pop(L, 1);
 534                         return 0;
 535                 }
 536         }
 537         ERROR1("Host : %s Not Fount !!",host_id);
 538         return 1;
 539 }
 540
 541 /*
 542  * surf parse bypass platform
 543  */
 544 static int surf_parse_bypass_platform()
 545 {
 546
 547         unsigned int i;
 548         p_host_attr p_host;
 549         p_link_attr p_link;
 550         p_route_attr p_route;
 551
 552           /* FIXME allocating memory for the buffer, I think 2kB should be enough */
 553         surfxml_bufferstack = xbt_new0(char, surfxml_bufferstack_size);
 554           /* <platform> */
 555 #ifndef BYPASS_MODEL
 556         static int AX_ptr = 0;
 557         static int surfxml_bufferstack_size = 2048;
 558         SURFXML_BUFFER_SET(platform_version, "2");
 559         SURFXML_START_TAG(platform);
 560 #endif
 561
 562         // Add Hosts
 563         xbt_dynar_foreach(host_list_d,i,p_host)
 564         {
 565
 566 #ifdef BYPASS_MODEL
 567                 create_host(p_host->id,p_host->power_peak,p_host->power_scale,p_host->power_trace,
 568                                         p_host->state_initial,p_host->state_trace);
 569                 //add to routing model host list
 570                 surf_route_add_host((char*)p_host->id);
 571 #else
 572                 char buffer[22];
 573                 SURFXML_BUFFER_SET(host_id,p_host->id);
 574                 sprintf(buffer,"%f",p_host->power_peak);
 575                 SURFXML_BUFFER_SET(host_power,buffer);
 576                 SURFXML_BUFFER_SET(host_availability, "1.0");
 577                 SURFXML_BUFFER_SET(host_availability_file, "");
 578                 A_surfxml_host_state = A_surfxml_host_state_ON;
 579                 SURFXML_BUFFER_SET(host_state_file, "");
 580                 SURFXML_BUFFER_SET(host_interference_send, "1.0");
 581                 SURFXML_BUFFER_SET(host_interference_recv, "1.0");
 582                 SURFXML_BUFFER_SET(host_interference_send_recv, "1.0");
 583                 SURFXML_BUFFER_SET(host_max_outgoing_rate, "-1.0");
 584                 SURFXML_START_TAG(host);
 585                 SURFXML_END_TAG(host);
 586 #endif
 587         }
 588
 589         //add Links
 590         xbt_dynar_foreach(link_list_d,i,p_link)
 591         {
 592 #ifdef BYPASS_MODEL
 593                 surf_link_create_resouce((char*)p_link->id,p_link->bandwidth,p_link->latency);
 594 #else
 595                 char buffer[22];
 596                 SURFXML_BUFFER_SET(link_id,p_link->id);
 597                 sprintf(buffer,"%f",p_link->bandwidth);
 598                 SURFXML_BUFFER_SET(link_bandwidth,buffer);
 599                 SURFXML_BUFFER_SET(link_bandwidth_file, "");
 600                 sprintf(buffer,"%f",p_link->latency);
 601                 SURFXML_BUFFER_SET(link_latency,buffer);
 602                 SURFXML_BUFFER_SET(link_latency_file, "");
 603                 A_surfxml_link_state = A_surfxml_link_state_ON;
 604                 SURFXML_BUFFER_SET(link_state_file, "");
 605                 A_surfxml_link_sharing_policy = A_surfxml_link_sharing_policy_SHARED;
 606                 SURFXML_START_TAG(link);
 607                 SURFXML_END_TAG(link);
 608 #endif
 609         }
 610         // add route
 611         xbt_dynar_foreach(route_list_d,i,p_route)
 612         {
 613 #ifdef BYPASS_MODEL
 614                 surf_route_set_resource((char*)p_route->src_id,(char*)p_route->dest_id,p_route->links_id,0);
 615 #else
 616
 617                 SURFXML_BUFFER_SET(route_src,p_route->src_id);
 618                 SURFXML_BUFFER_SET(route_dst,p_route->dest_id);
 619                 SURFXML_BUFFER_SET(route_impact_on_src, "0.0");
 620                 SURFXML_BUFFER_SET(route_impact_on_dst, "0.0");
 621                 SURFXML_BUFFER_SET(route_impact_on_src_with_other_recv, "0.0");
 622                 SURFXML_BUFFER_SET(route_impact_on_dst_with_other_send, "0.0");
 623                 SURFXML_START_TAG(route);
 624
 625                 unsigned int j;
 626                 char* link_id;
 627                 xbt_dynar_foreach(p_route->links_id,j,link_id)
 628                 {
 629                         SURFXML_BUFFER_SET(link_c_ctn_id,link_id);
 630                         SURFXML_START_TAG(link_c_ctn);
 631                         SURFXML_END_TAG(link_c_ctn);
 632
 633                 }
 634
 635                 SURFXML_END_TAG(route);
 636 #endif
 637         }
 638         /* </platform> */
 639 #ifndef BYPASS_MODEL
 640         SURFXML_END_TAG(platform);
 641 #else
 642         surf_add_host_traces();
 643         surf_set_routes();
 644         surf_add_link_traces();
 645 #endif
 646         free(surfxml_bufferstack);
 647         return 0; // must return 0 ?!!
 648
 649 }
 650 /*
 651  * surf parse bypass application
 652  */
 653 static int surf_parse_bypass_application()
 654 {
 655           unsigned int i;
 656           p_host_attr p_host;
 657           static int surfxml_bufferstack_size = 2048;
 658           /* FIXME ( should be manual )allocating memory to the buffer, I think 2MB should be enough */
 659           surfxml_bufferstack = xbt_new0(char, surfxml_bufferstack_size);
 660
 661 #ifdef BYPASS_MODEL
 662           xbt_dynar_foreach(host_list_d,i,p_host)
 663                   {
 664                   if(p_host->function)
 665                           MSG_set_function(p_host->id,p_host->function,p_host->args_list);
 666                   }
 667 #else
 668           unsigned int j;
 669           char* arg;
 670           static int AX_ptr;
 671           /* <platform> */
 672           SURFXML_BUFFER_SET(platform_version, "2");
 673           SURFXML_START_TAG(platform);
 674           xbt_dynar_foreach(host_list_d,i,p_host)
 675           {
 676                   if(p_host->function)
 677                   {
 678                           SURFXML_BUFFER_SET(process_host, p_host->id);
 679                           SURFXML_BUFFER_SET(process_function, p_host->function);
 680                           SURFXML_BUFFER_SET(process_start_time, "-1.0");
 681                           SURFXML_BUFFER_SET(process_kill_time, "-1.0");
 682                           SURFXML_START_TAG(process);
 683                           //args
 684                           xbt_dynar_foreach(p_host->args_list,j,arg)
 685                           {
 686                                   SURFXML_BUFFER_SET(argument_value,arg);
 687                                   SURFXML_START_TAG(argument);
 688                                   SURFXML_END_TAG(argument);
 689                           }
 690                           SURFXML_END_TAG(process);
 691                   }
 692           }
 693           /* </platform> */
 694           SURFXML_END_TAG(platform);
 695 #endif
 696           free(surfxml_bufferstack);
 697           return 0;
 698 }
 699
 700 //***********Register Methods *******************************************//
 701 /*
 702  * Host Methods
 703  */
 704 static const luaL_reg Host_methods[] = {
 705     {"getByName",   Host_get_by_name},
 706     {"name",            Host_get_name},
 707     {"number",          Host_number},
 708     {"at",                      Host_at},
 709     // Bypass XML Methods
 710     {"new",                     Host_new},
 711     {"setFunction",     Host_set_function},
 712     {0,0}
 713 };
 714
 715 static int Host_gc(lua_State *L)
 716 {
 717   m_host_t ht = checkHost(L,-1);
 718   if (ht) ht = NULL;
 719   return 0;
 720 }
 721
 722 static int Host_tostring(lua_State *L)
 723 {
 724   lua_pushfstring(L,"Host :%p",lua_touserdata(L,1));
 725   return 1;
 726 }
 727
 728 static const luaL_reg Host_meta[] = {
 729     {"__gc",  Host_gc},
 730     {"__tostring",  Host_tostring},
 731     {0,0}
 732 };
 733
 734 /*
 735  * Link Methods
 736  */
 737 static const luaL_reg Link_methods[] = {
 738     {"new",Link_new},
 739     {0,0}
 740 };
 741 /*
 742  * Route Methods
 743  */
 744 static const luaL_reg Route_methods[] ={
 745    {"new",Route_new},
 746    {0,0}
 747 };
 748
 749 /*
 750  * Environment related
 751  */
 752
 753 extern lua_State *simgrid_lua_state;
 754
 755 static int run_lua_code(int argc,char **argv) {
 756   DEBUG1("Run lua code %s",argv[0]);
 757   lua_State *L = lua_newthread(simgrid_lua_state);
 758   int ref = luaL_ref(simgrid_lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
 759   int res = 1;
 760
 761   /* Start the co-routine */
 762   lua_getglobal(L,argv[0]);
 763   xbt_assert1(lua_isfunction(L,-1),
 764       "The lua function %s does not seem to exist",argv[0]);
 765
 766   // push arguments onto the stack
 767   int i;
 768   for(i=1;i<argc;i++)
 769     lua_pushstring(L,argv[i]);
 770
 771   // Call the function (in resume)
 772   xbt_assert2(lua_pcall(L, argc-1, 1, 0) == 0,
 773     "error running function `%s': %s",argv[0], lua_tostring(L, -1));
 774
 775   /* retrieve result */
 776   if (lua_isnumber(L, -1)) {
 777     res = lua_tonumber(L, -1);
 778     lua_pop(L, 1);  /* pop returned value */
 779   }
 780
 781   // cleanups
 782   luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
 783   DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
 784   return res;
 785 }
 786 static int launch_application(lua_State *L) {
 787   const char * file = luaL_checkstring(L,1);
 788   MSG_function_register_default(run_lua_code);
 789   MSG_launch_application(file);
 790   return 0;
 791 }
 792 #include "simix/simix.h" //FIXME: KILLME when debugging on simix internals become useless
 793 static int create_environment(lua_State *L) {
 794   const char *file = luaL_checkstring(L,1);
 795   DEBUG1("Loading environment file %s",file);
 796   MSG_create_environment(file);
 797   smx_host_t *hosts = SIMIX_host_get_table();
 798   int i;
 799   for (i=0;i<SIMIX_host_get_number();i++) {
 800     DEBUG1("We have an host %s", SIMIX_host_get_name(hosts[i]));
 801   }
 802
 803   return 0;
 804 }
 805
 806 static int debug(lua_State *L) {
 807   const char *str = luaL_checkstring(L,1);
 808   DEBUG1("%s",str);
 809   return 0;
 810 }
 811 static int info(lua_State *L) {
 812   const char *str = luaL_checkstring(L,1);
 813   INFO1("%s",str);
 814   return 0;
 815 }
 816 static int run(lua_State *L) {
 817   MSG_main();
 818   return 0;
 819 }
 820 static int clean(lua_State *L) {
 821   MSG_clean();
 822   return 0;
 823 }
 824
 825 /*
 826  * Bypass XML Parser
 827  */
 828 static int register_platform(lua_State *L)
 829 {
 830         /* Tell Simgrid we dont wanna use its parser*/
 831         surf_parse = surf_parse_bypass_platform;
 832         MSG_create_environment(NULL);
 833         return 0;
 834 }
 835
 836 static int register_application(lua_State *L)
 837 {
 838          MSG_function_register_default(run_lua_code);
 839          surf_parse = surf_parse_bypass_application;
 840          MSG_launch_application(NULL);
 841          return 0;
 842 }
 843
 844 static const luaL_Reg simgrid_funcs[] = {
 845     { "create_environment", create_environment},
 846     { "launch_application", launch_application},
 847     { "debug", debug},
 848     { "info", info},
 849     { "run", run},
 850     { "clean", clean},
 851     /* short names */
 852     { "platform", create_environment},
 853     { "application", launch_application},
 854     /* methods to bypass XML parser*/
 855     { "register_platform",register_platform},
 856     { "register_application",register_application},
 857     { NULL, NULL }
 858 };
 859
 860 /* ********************************************************************************* */
 861 /*                       module management functions                                 */
 862 /* ********************************************************************************* */
 863
 864 extern const char*xbt_ctx_factory_to_use; /*Hack: let msg load directly the right factory */
 865
 866 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
 867
 868 int luaopen_simgrid(lua_State* L); // Fuck gcc: we don't need that prototype
 869 int luaopen_simgrid(lua_State* L) {
 870   //xbt_ctx_factory_to_use = "lua";
 871
 872   char **argv=malloc(sizeof(char*)*LUA_MAX_ARGS_COUNT);
 873   int argc=1;
 874   argv[0] = (char*)"/usr/bin/lua"; /* Lie on the argv[0] so that the stack dumping facilities find the right binary. FIXME: what if lua is not in that location? */
 875   /* Get the command line arguments from the lua interpreter */
 876   lua_getglobal(L,"arg");
 877   xbt_assert1(lua_istable(L,-1),"arg parameter is not a table but a %s",lua_typename(L,-1));
 878   int done=0;
 879   while (!done) {
 880     argc++;
 881     lua_pushinteger(L,argc-2);
 882     lua_gettable(L,-2);
 883     if (lua_isnil(L,-1)) {
 884       done = 1;
 885     } else {
 886       xbt_assert1(lua_isstring(L,-1),"argv[%d] got from lua is no string",argc-1);
 887       xbt_assert2(argc<LUA_MAX_ARGS_COUNT,
 888            "Too many arguments, please increase LUA_MAX_ARGS_COUNT in %s before recompiling SimGrid if you insist on having more than %d args on command line",
 889            __FILE__,LUA_MAX_ARGS_COUNT-1);
 890       argv[argc-1] = (char*)luaL_checkstring(L,-1);
 891       lua_pop(L,1);
 892       DEBUG1("Got command line argument %s from lua",argv[argc-1]);
 893     }
 894   }
 895   argv[argc--]=NULL;
 896
 897   /* Initialize the MSG core */
 898   MSG_global_init(&argc,argv);
 899   DEBUG1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
 900
 901   /* register the core C functions to lua */
 902   luaL_register(L, "simgrid", simgrid_funcs);
 903   /* register the task methods to lua */
 904   luaL_openlib(L,TASK_MODULE_NAME,Task_methods,0); //create methods table,add it to the globals
 905   luaL_newmetatable(L,TASK_MODULE_NAME); //create metatable for Task,add it to the Lua registry
 906   luaL_openlib(L,0,Task_meta,0);// fill metatable
 907   lua_pushliteral(L,"__index");
 908   lua_pushvalue(L,-3);  //dup methods table
 909   lua_rawset(L,-3); //matatable.__index = methods
 910   lua_pushliteral(L,"__metatable");
 911   lua_pushvalue(L,-3);  //dup methods table
 912   lua_rawset(L,-3); //hide metatable:metatable.__metatable = methods
 913   lua_pop(L,1);   //drop metatable
 914
 915   /* register the hosts methods to lua*/
 916   luaL_openlib(L,HOST_MODULE_NAME,Host_methods,0);
 917   luaL_newmetatable(L,HOST_MODULE_NAME);
 918   luaL_openlib(L,0,Host_meta,0);
 919   lua_pushliteral(L,"__index");
 920   lua_pushvalue(L,-3);
 921   lua_rawset(L,-3);
 922   lua_pushliteral(L,"__metatable");
 923   lua_pushvalue(L,-3);
 924   lua_rawset(L,-3);
 925   lua_pop(L,1);
 926
 927   /* register the links methods to lua*/
 928   luaL_openlib(L,LINK_MODULE_NAME,Link_methods,0);
 929   luaL_newmetatable(L,LINK_MODULE_NAME);
 930   lua_pop(L,1);
 931
 932   /*register the routes methods to lua*/
 933   luaL_openlib(L,ROUTE_MODULE_NAME,Route_methods,0);
 934   luaL_newmetatable(L,LINK_MODULE_NAME);
 935   lua_pop(L,1);
 936
 937   /* Keep the context mechanism informed of our lua world today */
 938   simgrid_lua_state = L;
 939   return 1;
 940 }