1 /* Copyright (c) 2010. The SimGrid Team.
2 * All rights reserved. */
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. */
7 /* SimGrid Lua bindings */
9 #include "simgrid_lua.h"
10 #include "lua_state_cloner.h"
11 #include "lua_utils.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua, bindings, "Lua Bindings");
15 #define TASK_MODULE_NAME "simgrid.task"
16 #define COMM_MODULE_NAME "simgrid.comm"
17 #define HOST_MODULE_NAME "simgrid.host"
18 #define PROCESS_MODULE_NAME "simgrid.process"
20 #define LINK_MODULE_NAME "simgrid.link"
21 #define ROUTE_MODULE_NAME "simgrid.route"
22 #define PLATF_MODULE_NAME "simgrid.platf"
24 static lua_State* sglua_maestro_state;
26 static const char* msg_errors[] = {
34 int luaopen_simgrid(lua_State *L);
35 static void register_c_functions(lua_State *L);
36 static int run_lua_code(int argc, char **argv);
38 /* ********************************************************************************* */
39 /* simgrid.task API */
40 /* ********************************************************************************* */
43 * \brief Ensures that a value in the stack is a valid task and returns it.
44 * \param L a Lua state
45 * \param index an index in the Lua stack
46 * \return the C task corresponding to this Lua task
48 static m_task_t sglua_checktask(lua_State* L, int index)
50 sglua_stack_dump("check task: ", L);
51 luaL_checktype(L, index, LUA_TTABLE);
53 lua_getfield(L, index, "__simgrid_task");
54 /* ... task ... ctask */
55 m_task_t task = *((m_task_t*) luaL_checkudata(L, -1, TASK_MODULE_NAME));
60 luaL_error(L, "This task was sent to someone else, you cannot access it anymore");
67 * \brief Creates a new task and leaves it onto the stack.
68 * \param L a Lua state
69 * \return number of values returned to Lua
71 * - Argument 1 (string): name of the task
72 * - Argument 2 (number): computation size
73 * - Argument 3 (number): communication size
74 * - Return value (task): the task created
76 * A Lua task is a regular table with a full userdata inside, and both share
77 * the same metatable. For the regular table, the metatable allows OO-style
78 * writing such as your_task:send(someone).
79 * For the userdata, the metatable is used to check its type.
80 * TODO: make the task name an optional last parameter
82 static int l_task_new(lua_State* L)
84 XBT_DEBUG("Task new");
85 const char* name = luaL_checkstring(L, 1);
86 int comp_size = luaL_checkint(L, 2);
87 int msg_size = luaL_checkint(L, 3);
91 m_task_t msg_task = MSG_task_create(name, comp_size, msg_size, NULL);
95 luaL_getmetatable(L, TASK_MODULE_NAME);
97 lua_setmetatable(L, -2);
99 m_task_t* lua_task = (m_task_t*) lua_newuserdata(L, sizeof(m_task_t));
101 *lua_task = msg_task;
102 luaL_getmetatable(L, TASK_MODULE_NAME);
104 lua_setmetatable(L, -2);
106 lua_setfield(L, -2, "__simgrid_task");
112 * \brief Returns the name of a task.
113 * \param L a Lua state
114 * \return number of values returned to Lua
116 * - Argument 1 (task): a task
117 * - Return value (string): name of the task
119 static int l_task_get_name(lua_State* L)
121 m_task_t task = sglua_checktask(L, 1);
122 lua_pushstring(L, MSG_task_get_name(task));
127 * \brief Returns the computation duration of a task.
128 * \param L a Lua state
129 * \return number of values returned to Lua
131 * - Argument 1 (task): a task
132 * - Return value (number): computation duration of this task
134 static int l_task_get_computation_duration(lua_State* L)
136 m_task_t task = sglua_checktask(L, 1);
137 lua_pushnumber(L, MSG_task_get_compute_duration(task));
142 * \brief Executes a task.
143 * \param L a Lua state
144 * \return number of values returned to Lua
146 * - Argument 1 (task): the task to execute
147 * - Return value (nil or string): nil if the task was successfully executed,
148 * or an error string in case of failure, which may be "task canceled" or
151 static int l_task_execute(lua_State* L)
153 m_task_t task = sglua_checktask(L, 1);
154 MSG_error_t res = MSG_task_execute(task);
160 lua_pushstring(L, msg_errors[res]);
166 * \brief Pops the Lua task on top of the stack and registers it so that a
167 * receiver can retrieve it later knowing the C task.
169 * After calling this function, you can send the C task to someone and he
170 * will be able to also get the corresponding Lua task.
172 * \param L a lua state
174 static void task_register(lua_State* L) {
176 m_task_t task = sglua_checktask(L, -1);
178 /* put in the C task a ref to the lua task so that the receiver finds it */
179 unsigned long ref = luaL_ref(L, LUA_REGISTRYINDEX);
181 MSG_task_set_data(task, (void*) ref);
185 * \brief Pushes onto the stack the Lua task corresponding to a C task.
187 * The Lua task must have been previously registered with task_register so
188 * that it can be retrieved knowing the C task.
190 * \param L a lua state
191 * \param task a C task
193 static void task_unregister(lua_State* L, m_task_t task) {
196 /* the task is in my registry, put it onto my stack */
197 unsigned long ref = (unsigned long) MSG_task_get_data(task);
198 lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
200 luaL_unref(L, LUA_REGISTRYINDEX, ref);
201 MSG_task_set_data(task, NULL);
205 * \brief When a C task has been received, retrieves the corresponding Lua
206 * task from the sender and pushes it onto the receiver's stack.
208 * This function should be called from the receiver process.
210 * \param dst the receiver
211 * \param task the task just received
213 static void task_copy(lua_State* dst, m_task_t task) {
215 m_process_t src_proc = MSG_task_get_sender(task);
216 lua_State* src = MSG_process_get_data(src_proc);
220 task_unregister(src, task);
222 sglua_copy_value(src, dst);
226 /* the receiver is the owner of the task and may destroy it:
227 * make the C task NULL on the sender side so that it doesn't garbage
229 lua_getfield(src, -1, "__simgrid_task");
230 /* src: ... task ctask */
231 m_task_t* udata = (m_task_t*) luaL_checkudata(src, -1, TASK_MODULE_NAME);
238 * \brief Sends a task to a mailbox and waits for its completion.
239 * \param L a Lua state
240 * \return number of values returned to Lua
242 * - Argument 1 (task): the task to send
243 * - Argument 2 (string or compatible): mailbox name, as a real string or any
244 * type convertible to string (numbers always are)
245 * - Return values (nil or string): nil if the communication was successful,
246 * or an error string in case of failure, which may be "timeout",
247 * "host failure" or "transfer failure"
249 static int l_task_send(lua_State* L)
251 m_task_t task = sglua_checktask(L, 1);
252 const char* mailbox = luaL_checkstring(L, 2);
253 /* task mailbox ... */
258 MSG_error_t res = MSG_task_send(task, mailbox);
264 /* the communication has failed, I'm still the owner of the task */
265 task_unregister(L, task);
267 lua_pushstring(L, msg_errors[res]);
274 * \brief Sends a task on a mailbox.
275 * \param L a Lua state
276 * \return number of values returned to Lua
278 * This is a non-blocking function: use simgrid.comm.wait() or
279 * simgrid.comm.test() to end the communication.
281 * - Argument 1 (task): the task to send
282 * - Argument 2 (string or compatible): mailbox name, as a real string or any
283 * type convertible to string (numbers always are)
284 * - Return value (comm): a communication object to be used later with wait or test
286 static int l_task_isend(lua_State* L)
288 m_task_t task = sglua_checktask(L, 1);
289 const char* mailbox = luaL_checkstring(L, 2);
290 /* task mailbox ... */
295 msg_comm_t comm = MSG_task_isend(task, mailbox);
297 msg_comm_t* userdata = (msg_comm_t*) lua_newuserdata(L, sizeof(msg_comm_t));
300 luaL_getmetatable(L, COMM_MODULE_NAME);
302 lua_setmetatable(L, -2);
308 * \brief Sends a task on a mailbox on a best effort way (detached send).
309 * \param L a Lua state
310 * \return number of values returned to Lua
312 * Like simgrid.task.isend, this is a non-blocking function.
313 * You can use this function if you don't care about when the communication
314 * ends and whether it succeeds.
315 * FIXME: isn't this equivalent to calling simgrid.task.isend() and ignoring
318 * - Argument 1 (task): the task to send
319 * - Argument 2 (string or compatible): mailbox name, as a real string or any
320 * type convertible to string (numbers always are)
322 static int l_task_dsend(lua_State* L)
324 m_task_t task = sglua_checktask(L, 1);
325 const char* mailbox = luaL_checkstring(L, 2);
326 /* task mailbox ... */
331 MSG_task_dsend(task, mailbox, NULL);
336 * \brief Receives a task.
337 * \param L a Lua state
338 * \return number of values returned to Lua
340 * - Argument 1 (string or compatible): mailbox name, as a real string or any
341 * type convertible to string (numbers always are)
342 * - Argument 2 (number, optional): timeout (default is no timeout)
343 * - Return values (task or nil + string): the task received, or nil plus an
344 * error message if the communication has failed
346 static int l_task_recv(lua_State* L)
348 m_task_t task = NULL;
349 const char* mailbox = luaL_checkstring(L, 1);
351 if (lua_gettop(L) >= 2) {
352 /* mailbox timeout ... */
353 timeout = luaL_checknumber(L, 2);
358 /* no timeout by default */
361 MSG_error_t res = MSG_task_receive_with_timeout(&task, mailbox, timeout);
365 /* mailbox ... task */
370 /* mailbox ... nil */
371 lua_pushstring(L, msg_errors[res]);
372 /* mailbox ... nil error */
378 * \brief Asynchronously receives a task on a mailbox.
379 * \param L a Lua state
380 * \return number of values returned to Lua
382 * This is a non-blocking function: use simgrid.comm.wait() or
383 * simgrid.comm.test() to end the communication and get the task in case of
386 * - Argument 1 (string or compatible): mailbox name, as a real string or any
387 * type convertible to string (numbers always are)
388 * - Return value (comm): a communication object to be used later with wait or test
391 static int l_task_irecv(lua_State* L)
393 const char* mailbox = luaL_checkstring(L, 1);
396 msg_comm_t comm = MSG_task_irecv(&task, mailbox);
398 msg_comm_t* userdata = (msg_comm_t*) lua_newuserdata(L, sizeof(msg_comm_t));
399 /* mailbox ... comm */
401 luaL_getmetatable(L, COMM_MODULE_NAME);
402 /* mailbox ... comm mt */
403 lua_setmetatable(L, -2);
404 /* mailbox ... comm */
408 static const luaL_reg task_functions[] = {
410 {"get_name", l_task_get_name},
411 {"get_computation_duration", l_task_get_computation_duration},
412 {"execute", l_task_execute},
413 {"send", l_task_send},
414 {"isend", l_task_isend},
415 {"dsend", l_task_dsend},
416 {"recv", l_task_recv},
417 {"irecv", l_task_irecv},
422 * \brief Finalizes the userdata of a task.
423 * \param L a Lua state
424 * \return number of values returned to Lua
426 * - Argument 1 (userdata): a C task, possibly NULL if it was sent to another
429 static int l_task_gc(lua_State* L)
432 m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
433 /* the task is NULL if I sent it to someone else */
435 MSG_task_destroy(task);
441 * \brief Returns a string representation of a C task.
442 * \param L a Lua state
443 * \return number of values returned to Lua
445 * - Argument 1 (userdata): a task
446 * - Return value (string): a string describing this task
448 static int l_task_tostring(lua_State* L)
450 m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
451 lua_pushfstring(L, "Task: %p", task);
456 * \brief Metamethods of both a task table and the userdata inside it.
458 static const luaL_reg task_meta[] = {
459 {"__gc", l_task_gc}, /* will be called only for userdata */
460 {"__tostring", l_task_tostring},
464 /* ********************************************************************************* */
465 /* simgrid.comm API */
466 /* ********************************************************************************* */
469 * \brief Ensures that a value in the stack is a comm and returns it.
470 * \param L a Lua state
471 * \param index an index in the Lua stack
474 static msg_comm_t sglua_checkcomm(lua_State* L, int index)
476 msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, index, COMM_MODULE_NAME));
482 * \brief Blocks the current process until a communication is finished.
483 * \param L a Lua state
484 * \return number of values returned to Lua
486 * - Argument 1 (comm): a comm (previously created by isend or irecv)
487 * - Argument 2 (number, optional): timeout (default is no timeout)
488 * - Return values (task or nil + string): in case of success, returns the task
489 * received if you are the receiver and nil if you are the sender. In case of
490 * failure, returns nil plus an error string.
492 static int l_comm_wait(lua_State* L) {
494 msg_comm_t comm = sglua_checkcomm(L, 1);
496 if (lua_gettop(L) >= 2) {
497 timeout = luaL_checknumber(L, 2);
500 MSG_error_t res = MSG_comm_wait(comm, timeout);
503 m_task_t task = MSG_comm_get_task(comm);
504 if (MSG_task_get_sender(task) == MSG_process_self()) {
509 /* I'm the receiver: copy the Lua task from the sender */
516 /* the communication has failed */
519 lua_pushstring(L, msg_errors[res]);
520 /* comm ... nil error */
526 * @brief Returns whether a communication is finished.
528 * Unlike wait(), This function always returns immediately.
530 * - Argument 1 (comm): a comm (previously created by isend or irecv)
531 * - Return value 1 (boolean): indicates whether the comm is finished
532 * (note that a finished comm may have failed)
533 * - Return value 2 (task): if you are the receiver, returns the task received
534 * in case of success, or nil if the comm has failed
535 * - Return value 3 (string): if the comm has failed, returns an error string
537 static int l_comm_test(lua_State* L) {
539 msg_comm_t comm = sglua_checkcomm(L, 1);
541 if (!MSG_comm_test(comm)) {
545 MSG_error_t res = MSG_comm_get_status(comm);
548 lua_pushboolean(L, 1);
550 m_task_t task = MSG_comm_get_task(comm);
551 if (MSG_task_get_sender(task) == MSG_process_self()) {
556 /* I'm the receiver: copy the Lua task from the sender */
558 /* comm ... true task */
563 /* the communication has failed */
565 /* comm ... true nil */
566 lua_pushstring(L, msg_errors[res]);
567 /* comm ... true nil error */
573 static const luaL_reg comm_functions[] = {
574 {"wait", l_comm_wait},
575 {"test", l_comm_test},
576 /* TODO waitany, testany */
581 * \brief Finalizes a comm userdata.
582 * \param L a Lua state
583 * \return number of values returned to Lua
585 * - Argument 1 (userdata): a comm
587 static int l_comm_gc(lua_State* L)
590 msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, 1, COMM_MODULE_NAME));
591 MSG_comm_destroy(comm);
596 * \brief Metamethods of the comm userdata.
598 static const luaL_reg comm_meta[] = {
603 /* ********************************************************************************* */
604 /* simgrid.host API */
605 /* ********************************************************************************* */
608 * \brief Ensures that a value in the stack is a host and returns it.
609 * \param L a Lua state
610 * \param index an index in the Lua stack
611 * \return the C host corresponding to this Lua host
613 static m_host_t sglua_checkhost(lua_State * L, int index)
616 luaL_checktype(L, index, LUA_TTABLE);
617 lua_getfield(L, index, "__simgrid_host");
618 pi = (m_host_t *) luaL_checkudata(L, lua_gettop(L), HOST_MODULE_NAME);
620 luaL_typerror(L, index, HOST_MODULE_NAME);
623 luaL_error(L, "null Host");
629 * \brief Returns a host given its name.
630 * \param L a Lua state
631 * \return number of values returned to Lua
633 * - Argument 1 (string): name of a host
634 * - Return value (host): the corresponding host
636 static int l_host_get_by_name(lua_State * L)
638 const char *name = luaL_checkstring(L, 1);
639 XBT_DEBUG("Getting Host from name...");
640 m_host_t msg_host = MSG_get_host_by_name(name);
642 luaL_error(L, "null Host : MSG_get_host_by_name failed");
644 lua_newtable(L); /* create a table, put the userdata on top of it */
645 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
646 *lua_host = msg_host;
647 luaL_getmetatable(L, HOST_MODULE_NAME);
648 lua_setmetatable(L, -2);
649 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
650 /* remove the args from the stack */
656 * \brief Returns the name of a host.
657 * \param L a Lua state
658 * \return number of values returned to Lua
660 * - Argument 1 (host): a host
661 * - Return value (string): name of this host
663 static int l_host_get_name(lua_State * L)
665 m_host_t ht = sglua_checkhost(L, 1);
666 lua_pushstring(L, MSG_host_get_name(ht));
671 * \brief Returns the number of existing hosts.
672 * \param L a Lua state
673 * \return number of values returned to Lua
675 * - Return value (number): number of hosts
677 static int l_host_number(lua_State * L)
679 lua_pushnumber(L, MSG_get_host_number());
684 * \brief Returns the host given its index.
685 * \param L a Lua state
686 * \return number of values returned to Lua
688 * - Argument 1 (number): an index (1 is the first)
689 * - Return value (host): the host at this index
691 static int l_host_at(lua_State * L)
693 int index = luaL_checkinteger(L, 1);
694 m_host_t host = MSG_get_host_table()[index - 1]; // lua indexing start by 1 (lua[1] <=> C[0])
695 lua_newtable(L); /* create a table, put the userdata on top of it */
696 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
698 luaL_getmetatable(L, HOST_MODULE_NAME);
699 lua_setmetatable(L, -2);
700 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
705 * \brief Returns the host where the current process is located.
706 * \param L a Lua state
707 * \return number of values returned to Lua
709 * - Return value (host): the current host
711 static int l_host_self(lua_State * L)
714 m_host_t host = MSG_host_self();
717 m_host_t* lua_host = (m_host_t*) lua_newuserdata(L, sizeof(m_host_t));
720 luaL_getmetatable(L, HOST_MODULE_NAME);
722 lua_setmetatable(L, -2);
724 lua_setfield(L, -2, "__simgrid_host");
730 * \brief Returns the value of a host property.
731 * \param L a Lua state
732 * \return number of values returned to Lua
734 * - Argument 1 (host): a host
735 * - Argument 2 (string): name of the property to get
736 * - Return value (string): the value of this property
738 static int l_host_get_property_value(lua_State * L)
740 m_host_t ht = sglua_checkhost(L, 1);
741 const char *prop = luaL_checkstring(L, 2);
742 lua_pushstring(L,MSG_host_get_property_value(ht,prop));
747 * \brief Makes the current process sleep for a while.
748 * \param L a Lua state
749 * \return number of values returned to Lua
751 * - Argument 1 (number): duration of the sleep
753 static int l_host_sleep(lua_State *L)
755 int time = luaL_checknumber(L, 1);
756 MSG_process_sleep(time);
761 * \brief Destroys a host.
762 * \param L a Lua state
763 * \return number of values returned to Lua
765 * - Argument 1 (host): the host to destroy
767 static int l_host_destroy(lua_State *L)
769 m_host_t ht = sglua_checkhost(L, 1);
770 __MSG_host_destroy(ht);
774 static const luaL_reg host_functions[] = {
775 {"get_by_name", l_host_get_by_name},
776 {"name", l_host_get_name},
777 {"number", l_host_number},
779 {"self", l_host_self},
780 {"get_prop_value", l_host_get_property_value},
781 {"sleep", l_host_sleep},
782 {"destroy", l_host_destroy},
783 // Bypass XML Methods
784 {"set_function", console_set_function},
785 {"set_property", console_host_set_property},
790 * \brief Returns a string representation of a host.
791 * \param L a Lua state
792 * \return number of values returned to Lua
794 * - Argument 1 (userdata): a host
795 * - Return value (string): a string describing this host
797 static int l_host_tostring(lua_State * L)
799 lua_pushfstring(L, "Host :%p", lua_touserdata(L, 1));
803 static const luaL_reg host_meta[] = {
804 {"__tostring", l_host_tostring},
808 /* ********************************************************************************* */
809 /* simgrid.process API */
810 /* ********************************************************************************* */
813 * \brief Makes the current process sleep for a while.
814 * \param L a Lua state
815 * \return number of values returned to Lua
817 * - Argument 1 (number): duration of the sleep
818 * - Return value (nil or string): nil in everything went ok, or a string error
819 * if case of failure ("host failure")
821 static int l_process_sleep(lua_State* L)
823 double duration = luaL_checknumber(L, 1);
824 MSG_error_t res = MSG_process_sleep(duration);
831 case MSG_HOST_FAILURE:
832 lua_pushliteral(L, "host failure");
836 xbt_die("Unexpected result of MSG_process_sleep: %d, please report this bug", res);
840 static const luaL_reg process_functions[] = {
841 {"sleep", l_process_sleep},
842 /* TODO: self, create, kill, suspend, is_suspended, resume, get_name,
843 * get_pid, get_ppid, migrate
848 /* ********************************************************************************* */
849 /* lua_stub_generator functions */
850 /* ********************************************************************************* */
852 xbt_dict_t process_function_set;
853 xbt_dynar_t process_list;
854 xbt_dict_t machine_set;
855 static s_process_t process;
857 void s_process_free(void *process)
859 s_process_t *p = (s_process_t *) process;
861 for (i = 0; i < p->argc; i++)
867 static int gras_add_process_function(lua_State * L)
870 const char *process_host = luaL_checkstring(L, 1);
871 const char *process_function = luaL_checkstring(L, 2);
873 if (xbt_dict_is_empty(machine_set)
874 || xbt_dict_is_empty(process_function_set)
875 || xbt_dynar_is_empty(process_list)) {
876 process_function_set = xbt_dict_new();
877 process_list = xbt_dynar_new(sizeof(s_process_t), s_process_free);
878 machine_set = xbt_dict_new();
881 xbt_dict_set(machine_set, process_host, NULL, NULL);
882 xbt_dict_set(process_function_set, process_function, NULL, NULL);
885 process.argv = xbt_new(char *, 1);
886 process.argv[0] = xbt_strdup(process_function);
887 process.host = strdup(process_host);
890 while (lua_next(L, 3) != 0) {
891 arg = lua_tostring(L, -1);
894 xbt_realloc(process.argv, (process.argc) * sizeof(char *));
895 process.argv[(process.argc) - 1] = xbt_strdup(arg);
897 XBT_DEBUG("index = %f , arg = %s \n", lua_tonumber(L, -2),
898 lua_tostring(L, -1));
902 //add to the process list
903 xbt_dynar_push(process_list, &process);
907 static int gras_generate(lua_State * L)
909 const char *project_name = luaL_checkstring(L, 1);
910 generate_sim(project_name);
911 generate_rl(project_name);
912 generate_makefile_local(project_name);
916 /* ********************************************************************************* */
917 /* simgrid.platf API */
918 /* ********************************************************************************* */
920 static const luaL_reg platf_functions[] = {
921 {"open", console_open},
922 {"close", console_close},
923 {"AS_open", console_AS_open},
924 {"AS_close", console_AS_close},
925 {"host_new", console_add_host},
926 {"link_new", console_add_link},
927 {"router_new", console_add_router},
928 {"route_new", console_add_route},
932 /* ********************************************************************************* */
934 /* ********************************************************************************* */
937 * \brief Deploys your application.
938 * \param L a Lua state
939 * \return number of values returned to Lua
941 * - Argument 1 (string): name of the deployment file to load
943 static int launch_application(lua_State* L) {
945 const char* file = luaL_checkstring(L, 1);
946 MSG_function_register_default(run_lua_code);
947 MSG_launch_application(file);
952 * \brief Creates the platform.
953 * \param L a Lua state
954 * \return number of values returned to Lua
956 * - Argument 1 (string): name of the platform file to load
958 static int create_environment(lua_State* L) {
960 const char* file = luaL_checkstring(L, 1);
961 XBT_DEBUG("Loading environment file %s", file);
962 MSG_create_environment(file);
967 * \brief Prints a log string with debug level.
968 * \param L a Lua state
969 * \return number of values returned to Lua
971 * - Argument 1 (string): the text to print
973 static int debug(lua_State* L) {
975 const char* str = luaL_checkstring(L, 1);
976 XBT_DEBUG("%s", str);
981 * \brief Prints a log string with info level.
982 * \param L a Lua state
983 * \return number of values returned to Lua
985 * - Argument 1 (string): the text to print
987 static int info(lua_State* L) {
989 const char* str = luaL_checkstring(L, 1);
995 * \brief Runs your application.
996 * \param L a Lua state
997 * \return number of values returned to Lua
999 static int run(lua_State* L) {
1006 * \brief Returns the current simulated time.
1007 * \param L a Lua state
1008 * \return number of values returned to Lua
1010 * - Return value (number): the simulated time
1012 static int get_clock(lua_State* L) {
1014 lua_pushnumber(L, MSG_get_clock());
1019 * \brief Cleans the simulation.
1020 * \param L a Lua state
1021 * \return number of values returned to Lua
1023 static int simgrid_gc(lua_State * L)
1030 * Register platform for MSG
1032 static int msg_register_platform(lua_State * L)
1034 /* Tell Simgrid we dont wanna use its parser */
1035 //surf_parse = console_parse_platform;
1036 surf_parse_reset_callbacks();
1037 MSG_create_environment(NULL);
1042 * Register platform for Simdag
1045 static int sd_register_platform(lua_State * L)
1047 //surf_parse = console_parse_platform_wsL07;
1048 surf_parse_reset_callbacks();
1049 SD_create_environment(NULL);
1054 * Register platform for gras
1056 static int gras_register_platform(lua_State * L)
1058 //surf_parse = console_parse_platform;
1059 surf_parse_reset_callbacks();
1060 gras_create_environment(NULL);
1065 * Register applicaiton for MSG
1067 static int msg_register_application(lua_State * L)
1069 MSG_function_register_default(run_lua_code);
1070 //surf_parse = console_parse_application;
1071 MSG_launch_application(NULL);
1076 * Register application for gras
1078 static int gras_register_application(lua_State * L)
1080 gras_function_register_default(run_lua_code);
1081 //surf_parse = console_parse_application;
1082 gras_launch_application(NULL);
1086 static const luaL_Reg simgrid_functions[] = {
1087 {"create_environment", create_environment},
1088 {"launch_application", launch_application},
1092 {"get_clock", get_clock},
1094 {"platform", create_environment},
1095 {"application", launch_application},
1096 /* methods to bypass XML parser */
1097 {"msg_register_platform", msg_register_platform},
1098 {"sd_register_platform", sd_register_platform},
1099 {"msg_register_application", msg_register_application},
1100 {"gras_register_platform", gras_register_platform},
1101 {"gras_register_application", gras_register_application},
1102 /* gras sub generator method */
1103 {"gras_set_process_function", gras_add_process_function},
1104 {"gras_generate", gras_generate},
1108 /* ********************************************************************************* */
1109 /* module management functions */
1110 /* ********************************************************************************* */
1112 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
1115 * \brief Opens the simgrid Lua module.
1117 * This function is called automatically by the Lua interpreter when some
1118 * Lua code requires the "simgrid" module.
1120 * \param L the Lua state
1122 int luaopen_simgrid(lua_State *L)
1124 XBT_DEBUG("luaopen_simgrid *****");
1126 /* Get the command line arguments from the lua interpreter */
1127 char **argv = malloc(sizeof(char *) * LUA_MAX_ARGS_COUNT);
1129 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? */
1131 lua_getglobal(L, "arg");
1132 /* if arg is a null value, it means we use lua only as a script to init platform
1133 * else it should be a table and then take arg in consideration
1135 if (lua_istable(L, -1)) {
1139 lua_pushinteger(L, argc - 2);
1140 lua_gettable(L, -2);
1141 if (lua_isnil(L, -1)) {
1144 xbt_assert(lua_isstring(L, -1),
1145 "argv[%d] got from lua is no string", argc - 1);
1146 xbt_assert(argc < LUA_MAX_ARGS_COUNT,
1147 "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",
1148 __FILE__, LUA_MAX_ARGS_COUNT - 1);
1149 argv[argc - 1] = (char *) luaL_checkstring(L, -1);
1151 XBT_DEBUG("Got command line argument %s from lua", argv[argc - 1]);
1154 argv[argc--] = NULL;
1156 /* Initialize the MSG core */
1157 MSG_global_init(&argc, argv);
1158 XBT_DEBUG("Still %d arguments on command line", argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
1161 /* Keep the context mechanism informed of our lua world today */
1162 sglua_maestro_state = L;
1164 /* initialize access to my tables by children Lua states */
1166 lua_setfield(L, LUA_REGISTRYINDEX, "simgrid.maestro_tables");
1168 register_c_functions(L);
1174 * \brief Returns whether a Lua state is the maestro state.
1175 * \param L a Lua state
1176 * \return true if this is maestro
1178 int sglua_is_maestro(lua_State* L) {
1179 return L == sglua_maestro_state;
1183 * \brief Returns the maestro state.
1184 * \return the maestro Lua state
1186 lua_State* sglua_get_maestro(void) {
1187 return sglua_maestro_state;
1191 * \brief Registers the task functions into the table simgrid.task.
1193 * Also initialize the metatable of the task userdata type.
1195 * \param L a lua state
1197 static void register_task_functions(lua_State* L)
1199 /* create a table simgrid.task and fill it with task functions */
1200 luaL_openlib(L, TASK_MODULE_NAME, task_functions, 0);
1203 /* create the metatable for tasks, add it to the Lua registry */
1204 luaL_newmetatable(L, TASK_MODULE_NAME);
1205 /* simgrid.task mt */
1206 /* fill the metatable */
1207 luaL_openlib(L, NULL, task_meta, 0);
1208 /* simgrid.task mt */
1209 lua_pushvalue(L, -2);
1210 /* simgrid.task mt simgrid.task */
1211 /* metatable.__index = simgrid.task
1212 * we put the task functions inside the task itself:
1213 * this allows to write my_task:method(args) for
1214 * simgrid.task.method(my_task, args) */
1215 lua_setfield(L, -2, "__index");
1216 /* simgrid.task mt */
1222 * \brief Registers the comm functions into the table simgrid.comm.
1224 * Also initialize the metatable of the comm userdata type.
1226 * \param L a lua state
1228 static void register_comm_functions(lua_State* L)
1230 /* create a table simgrid.com and fill it with com functions */
1231 luaL_openlib(L, COMM_MODULE_NAME, comm_functions, 0);
1234 /* create the metatable for comms, add it to the Lua registry */
1235 luaL_newmetatable(L, COMM_MODULE_NAME);
1236 /* simgrid.comm mt */
1237 /* fill the metatable */
1238 luaL_openlib(L, NULL, comm_meta, 0);
1239 /* simgrid.comm mt */
1240 lua_pushvalue(L, -2);
1241 /* simgrid.comm mt simgrid.comm */
1242 /* metatable.__index = simgrid.comm
1243 * we put the comm functions inside the comm itself:
1244 * this allows to write my_comm:method(args) for
1245 * simgrid.comm.method(my_comm, args) */
1246 lua_setfield(L, -2, "__index");
1247 /* simgrid.comm mt */
1253 * \brief Registers the host functions into the table simgrid.host.
1255 * Also initialize the metatable of the host userdata type.
1257 * \param L a lua state
1259 static void register_host_functions(lua_State* L)
1261 /* create a table simgrid.host and fill it with host functions */
1262 luaL_openlib(L, HOST_MODULE_NAME, host_functions, 0);
1265 /* create the metatable for host, add it to the Lua registry */
1266 luaL_newmetatable(L, HOST_MODULE_NAME);
1267 /* simgrid.host mt */
1268 /* fill the metatable */
1269 luaL_openlib(L, NULL, host_meta, 0);
1270 /* simgrid.host mt */
1271 lua_pushvalue(L, -2);
1272 /* simgrid.host mt simgrid.host */
1273 /* metatable.__index = simgrid.host
1274 * we put the host functions inside the host userdata itself:
1275 * this allows to write my_host:method(args) for
1276 * simgrid.host.method(my_host, args) */
1277 lua_setfield(L, -2, "__index");
1278 /* simgrid.host mt */
1284 * \brief Registers the process functions into the table simgrid.process.
1285 * \param L a lua state
1287 static void register_process_functions(lua_State* L)
1289 luaL_openlib(L, PROCESS_MODULE_NAME, process_functions, 0);
1290 /* simgrid.process */
1295 * \brief Registers the platform functions into the table simgrid.platf.
1296 * \param L a lua state
1298 static void register_platf_functions(lua_State* L)
1300 luaL_openlib(L, PLATF_MODULE_NAME, platf_functions, 0);
1306 * \brief Makes the core functions available to the Lua world.
1307 * \param L a Lua world
1309 static void register_core_functions(lua_State *L)
1311 /* register the core C functions to lua */
1312 luaL_register(L, "simgrid", simgrid_functions);
1315 /* set a finalizer that cleans simgrid, by adding to the simgrid module a
1316 * dummy userdata whose __gc metamethod calls MSG_clean() */
1317 lua_newuserdata(L, sizeof(void*));
1320 /* simgrid udata mt */
1321 lua_pushcfunction(L, simgrid_gc);
1322 /* simgrid udata mt simgrid_gc */
1323 lua_setfield(L, -2, "__gc");
1324 /* simgrid udata mt */
1325 lua_setmetatable(L, -2);
1327 lua_setfield(L, -2, "__simgrid_loaded");
1334 * \brief Creates the simgrid module and make it available to Lua.
1335 * \param L a Lua world
1337 static void register_c_functions(lua_State *L)
1339 register_core_functions(L);
1340 register_task_functions(L);
1341 register_comm_functions(L);
1342 register_host_functions(L);
1343 register_process_functions(L);
1344 register_platf_functions(L);
1348 * \brief Runs a Lua function as a new simulated process.
1349 * \param argc number of arguments of the function
1350 * \param argv name of the Lua function and array of its arguments
1351 * \return result of the function
1353 static int run_lua_code(int argc, char **argv)
1355 XBT_DEBUG("Run lua code %s", argv[0]);
1357 /* create a new state, getting globals from maestro */
1358 lua_State *L = sglua_clone_maestro();
1359 MSG_process_set_data(MSG_process_self(), L);
1361 /* start the function */
1362 lua_getglobal(L, argv[0]);
1363 xbt_assert(lua_isfunction(L, -1),
1364 "There is no Lua function with name `%s'", argv[0]);
1366 /* push arguments onto the stack */
1368 for (i = 1; i < argc; i++)
1369 lua_pushstring(L, argv[i]);
1371 /* call the function */
1372 _XBT_GNUC_UNUSED int err;
1373 err = lua_pcall(L, argc - 1, 1, 0);
1374 xbt_assert(err == 0, "Error running function `%s': %s", argv[0],
1375 lua_tostring(L, -1));
1377 /* retrieve result */
1379 if (lua_isnumber(L, -1)) {
1380 res = lua_tonumber(L, -1);
1381 lua_pop(L, 1); /* pop returned value */
1384 XBT_DEBUG("Execution of Lua code %s is over", (argv ? argv[0] : "(null)"));