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);
395 m_task_t* task = xbt_new0(m_task_t, 1); // FIXME fix this leak
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 values (task/boolean or nil + string): if the communication is not
532 * finished, return false. If the communication is finished and was successful,
533 * returns the task received if you are the receiver or true if you are the
534 * sender. If the communication is finished and has failed, returns nil
535 * plus 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)) {
542 /* not finished yet */
543 lua_pushboolean(L, 0);
548 /* finished but may have failed */
549 MSG_error_t res = MSG_comm_get_status(comm);
552 m_task_t task = MSG_comm_get_task(comm);
553 if (MSG_task_get_sender(task) == MSG_process_self()) {
555 lua_pushboolean(L, 1);
560 /* I'm the receiver: copy the Lua task from the sender */
567 /* the communication has failed */
570 lua_pushstring(L, msg_errors[res]);
571 /* comm ... nil error */
577 static const luaL_reg comm_functions[] = {
578 {"wait", l_comm_wait},
579 {"test", l_comm_test},
580 /* TODO waitany, testany */
585 * \brief Finalizes a comm userdata.
586 * \param L a Lua state
587 * \return number of values returned to Lua
589 * - Argument 1 (userdata): a comm
591 static int l_comm_gc(lua_State* L)
594 msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, 1, COMM_MODULE_NAME));
595 MSG_comm_destroy(comm);
600 * \brief Metamethods of the comm userdata.
602 static const luaL_reg comm_meta[] = {
607 /* ********************************************************************************* */
608 /* simgrid.host API */
609 /* ********************************************************************************* */
612 * \brief Ensures that a value in the stack is a host and returns it.
613 * \param L a Lua state
614 * \param index an index in the Lua stack
615 * \return the C host corresponding to this Lua host
617 static m_host_t sglua_checkhost(lua_State * L, int index)
620 luaL_checktype(L, index, LUA_TTABLE);
621 lua_getfield(L, index, "__simgrid_host");
622 pi = (m_host_t *) luaL_checkudata(L, lua_gettop(L), HOST_MODULE_NAME);
624 luaL_typerror(L, index, HOST_MODULE_NAME);
627 luaL_error(L, "null Host");
633 * \brief Returns a host given its name.
634 * \param L a Lua state
635 * \return number of values returned to Lua
637 * - Argument 1 (string): name of a host
638 * - Return value (host): the corresponding host
640 static int l_host_get_by_name(lua_State * L)
642 const char *name = luaL_checkstring(L, 1);
643 XBT_DEBUG("Getting Host from name...");
644 m_host_t msg_host = MSG_get_host_by_name(name);
646 luaL_error(L, "null Host : MSG_get_host_by_name failed");
648 lua_newtable(L); /* create a table, put the userdata on top of it */
649 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
650 *lua_host = msg_host;
651 luaL_getmetatable(L, HOST_MODULE_NAME);
652 lua_setmetatable(L, -2);
653 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
654 /* remove the args from the stack */
660 * \brief Returns the name of a host.
661 * \param L a Lua state
662 * \return number of values returned to Lua
664 * - Argument 1 (host): a host
665 * - Return value (string): name of this host
667 static int l_host_get_name(lua_State * L)
669 m_host_t ht = sglua_checkhost(L, 1);
670 lua_pushstring(L, MSG_host_get_name(ht));
675 * \brief Returns the number of existing hosts.
676 * \param L a Lua state
677 * \return number of values returned to Lua
679 * - Return value (number): number of hosts
681 static int l_host_number(lua_State * L)
683 lua_pushnumber(L, MSG_get_host_number());
688 * \brief Returns the host given its index.
689 * \param L a Lua state
690 * \return number of values returned to Lua
692 * - Argument 1 (number): an index (1 is the first)
693 * - Return value (host): the host at this index
695 static int l_host_at(lua_State * L)
697 int index = luaL_checkinteger(L, 1);
698 m_host_t host = MSG_get_host_table()[index - 1]; // lua indexing start by 1 (lua[1] <=> C[0])
699 lua_newtable(L); /* create a table, put the userdata on top of it */
700 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
702 luaL_getmetatable(L, HOST_MODULE_NAME);
703 lua_setmetatable(L, -2);
704 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
709 * \brief Returns the host where the current process is located.
710 * \param L a Lua state
711 * \return number of values returned to Lua
713 * - Return value (host): the current host
715 static int l_host_self(lua_State * L)
718 m_host_t host = MSG_host_self();
721 m_host_t* lua_host = (m_host_t*) lua_newuserdata(L, sizeof(m_host_t));
724 luaL_getmetatable(L, HOST_MODULE_NAME);
726 lua_setmetatable(L, -2);
728 lua_setfield(L, -2, "__simgrid_host");
734 * \brief Returns the value of a host property.
735 * \param L a Lua state
736 * \return number of values returned to Lua
738 * - Argument 1 (host): a host
739 * - Argument 2 (string): name of the property to get
740 * - Return value (string): the value of this property
742 static int l_host_get_property_value(lua_State * L)
744 m_host_t ht = sglua_checkhost(L, 1);
745 const char *prop = luaL_checkstring(L, 2);
746 lua_pushstring(L,MSG_host_get_property_value(ht,prop));
751 * \brief Makes the current process sleep for a while.
752 * \param L a Lua state
753 * \return number of values returned to Lua
755 * - Argument 1 (number): duration of the sleep
757 static int l_host_sleep(lua_State *L)
759 int time = luaL_checknumber(L, 1);
760 MSG_process_sleep(time);
765 * \brief Destroys a host.
766 * \param L a Lua state
767 * \return number of values returned to Lua
769 * - Argument 1 (host): the host to destroy
771 static int l_host_destroy(lua_State *L)
773 m_host_t ht = sglua_checkhost(L, 1);
774 __MSG_host_destroy(ht);
778 static const luaL_reg host_functions[] = {
779 {"get_by_name", l_host_get_by_name},
780 {"name", l_host_get_name},
781 {"number", l_host_number},
783 {"self", l_host_self},
784 {"get_prop_value", l_host_get_property_value},
785 {"sleep", l_host_sleep},
786 {"destroy", l_host_destroy},
787 // Bypass XML Methods
788 {"set_function", console_set_function},
789 {"set_property", console_host_set_property},
794 * \brief Returns a string representation of a host.
795 * \param L a Lua state
796 * \return number of values returned to Lua
798 * - Argument 1 (userdata): a host
799 * - Return value (string): a string describing this host
801 static int l_host_tostring(lua_State * L)
803 lua_pushfstring(L, "Host :%p", lua_touserdata(L, 1));
807 static const luaL_reg host_meta[] = {
808 {"__tostring", l_host_tostring},
812 /* ********************************************************************************* */
813 /* simgrid.process API */
814 /* ********************************************************************************* */
817 * \brief Makes the current process sleep for a while.
818 * \param L a Lua state
819 * \return number of values returned to Lua
821 * - Argument 1 (number): duration of the sleep
822 * - Return value (nil or string): nil in everything went ok, or a string error
823 * if case of failure ("host failure")
825 static int l_process_sleep(lua_State* L)
827 double duration = luaL_checknumber(L, 1);
828 MSG_error_t res = MSG_process_sleep(duration);
835 case MSG_HOST_FAILURE:
836 lua_pushliteral(L, "host failure");
840 xbt_die("Unexpected result of MSG_process_sleep: %d, please report this bug", res);
844 static const luaL_reg process_functions[] = {
845 {"sleep", l_process_sleep},
846 /* TODO: self, create, kill, suspend, is_suspended, resume, get_name,
847 * get_pid, get_ppid, migrate
852 /* ********************************************************************************* */
853 /* lua_stub_generator functions */
854 /* ********************************************************************************* */
856 xbt_dict_t process_function_set;
857 xbt_dynar_t process_list;
858 xbt_dict_t machine_set;
859 static s_process_t process;
861 void s_process_free(void *process)
863 s_process_t *p = (s_process_t *) process;
865 for (i = 0; i < p->argc; i++)
871 static int gras_add_process_function(lua_State * L)
874 const char *process_host = luaL_checkstring(L, 1);
875 const char *process_function = luaL_checkstring(L, 2);
877 if (xbt_dict_is_empty(machine_set)
878 || xbt_dict_is_empty(process_function_set)
879 || xbt_dynar_is_empty(process_list)) {
880 process_function_set = xbt_dict_new();
881 process_list = xbt_dynar_new(sizeof(s_process_t), s_process_free);
882 machine_set = xbt_dict_new();
885 xbt_dict_set(machine_set, process_host, NULL, NULL);
886 xbt_dict_set(process_function_set, process_function, NULL, NULL);
889 process.argv = xbt_new(char *, 1);
890 process.argv[0] = xbt_strdup(process_function);
891 process.host = strdup(process_host);
894 while (lua_next(L, 3) != 0) {
895 arg = lua_tostring(L, -1);
898 xbt_realloc(process.argv, (process.argc) * sizeof(char *));
899 process.argv[(process.argc) - 1] = xbt_strdup(arg);
901 XBT_DEBUG("index = %f , arg = %s \n", lua_tonumber(L, -2),
902 lua_tostring(L, -1));
906 //add to the process list
907 xbt_dynar_push(process_list, &process);
911 static int gras_generate(lua_State * L)
913 const char *project_name = luaL_checkstring(L, 1);
914 generate_sim(project_name);
915 generate_rl(project_name);
916 generate_makefile_local(project_name);
920 /* ********************************************************************************* */
921 /* simgrid.platf API */
922 /* ********************************************************************************* */
924 static const luaL_reg platf_functions[] = {
925 {"open", console_open},
926 {"close", console_close},
927 {"AS_open", console_AS_open},
928 {"AS_close", console_AS_close},
929 {"host_new", console_add_host},
930 {"link_new", console_add_link},
931 {"router_new", console_add_router},
932 {"route_new", console_add_route},
936 /* ********************************************************************************* */
938 /* ********************************************************************************* */
941 * \brief Deploys your application.
942 * \param L a Lua state
943 * \return number of values returned to Lua
945 * - Argument 1 (string): name of the deployment file to load
947 static int launch_application(lua_State* L) {
949 const char* file = luaL_checkstring(L, 1);
950 MSG_function_register_default(run_lua_code);
951 MSG_launch_application(file);
956 * \brief Creates the platform.
957 * \param L a Lua state
958 * \return number of values returned to Lua
960 * - Argument 1 (string): name of the platform file to load
962 static int create_environment(lua_State* L) {
964 const char* file = luaL_checkstring(L, 1);
965 XBT_DEBUG("Loading environment file %s", file);
966 MSG_create_environment(file);
971 * \brief Prints a log string with debug level.
972 * \param L a Lua state
973 * \return number of values returned to Lua
975 * - Argument 1 (string): the text to print
977 static int debug(lua_State* L) {
979 const char* str = luaL_checkstring(L, 1);
980 XBT_DEBUG("%s", str);
985 * \brief Prints a log string with info level.
986 * \param L a Lua state
987 * \return number of values returned to Lua
989 * - Argument 1 (string): the text to print
991 static int info(lua_State* L) {
993 const char* str = luaL_checkstring(L, 1);
999 * \brief Runs your application.
1000 * \param L a Lua state
1001 * \return number of values returned to Lua
1003 static int run(lua_State* L) {
1010 * \brief Returns the current simulated time.
1011 * \param L a Lua state
1012 * \return number of values returned to Lua
1014 * - Return value (number): the simulated time
1016 static int get_clock(lua_State* L) {
1018 lua_pushnumber(L, MSG_get_clock());
1023 * \brief Cleans the simulation.
1024 * \param L a Lua state
1025 * \return number of values returned to Lua
1027 static int simgrid_gc(lua_State * L)
1034 * Register platform for MSG
1036 static int msg_register_platform(lua_State * L)
1038 /* Tell Simgrid we dont wanna use its parser */
1039 //surf_parse = console_parse_platform;
1040 surf_parse_reset_callbacks();
1041 MSG_create_environment(NULL);
1046 * Register platform for Simdag
1049 static int sd_register_platform(lua_State * L)
1051 //surf_parse = console_parse_platform_wsL07;
1052 surf_parse_reset_callbacks();
1053 SD_create_environment(NULL);
1058 * Register platform for gras
1060 static int gras_register_platform(lua_State * L)
1062 //surf_parse = console_parse_platform;
1063 surf_parse_reset_callbacks();
1064 gras_create_environment(NULL);
1069 * Register applicaiton for MSG
1071 static int msg_register_application(lua_State * L)
1073 MSG_function_register_default(run_lua_code);
1074 //surf_parse = console_parse_application;
1075 MSG_launch_application(NULL);
1080 * Register application for gras
1082 static int gras_register_application(lua_State * L)
1084 gras_function_register_default(run_lua_code);
1085 //surf_parse = console_parse_application;
1086 gras_launch_application(NULL);
1090 static const luaL_Reg simgrid_functions[] = {
1091 {"create_environment", create_environment},
1092 {"launch_application", launch_application},
1096 {"get_clock", get_clock},
1098 {"platform", create_environment},
1099 {"application", launch_application},
1100 /* methods to bypass XML parser */
1101 {"msg_register_platform", msg_register_platform},
1102 {"sd_register_platform", sd_register_platform},
1103 {"msg_register_application", msg_register_application},
1104 {"gras_register_platform", gras_register_platform},
1105 {"gras_register_application", gras_register_application},
1106 /* gras sub generator method */
1107 {"gras_set_process_function", gras_add_process_function},
1108 {"gras_generate", gras_generate},
1112 /* ********************************************************************************* */
1113 /* module management functions */
1114 /* ********************************************************************************* */
1116 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
1119 * \brief Opens the simgrid Lua module.
1121 * This function is called automatically by the Lua interpreter when some
1122 * Lua code requires the "simgrid" module.
1124 * \param L the Lua state
1126 int luaopen_simgrid(lua_State *L)
1128 XBT_DEBUG("luaopen_simgrid *****");
1130 /* Get the command line arguments from the lua interpreter */
1131 char **argv = malloc(sizeof(char *) * LUA_MAX_ARGS_COUNT);
1133 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? */
1135 lua_getglobal(L, "arg");
1136 /* if arg is a null value, it means we use lua only as a script to init platform
1137 * else it should be a table and then take arg in consideration
1139 if (lua_istable(L, -1)) {
1143 lua_pushinteger(L, argc - 2);
1144 lua_gettable(L, -2);
1145 if (lua_isnil(L, -1)) {
1148 xbt_assert(lua_isstring(L, -1),
1149 "argv[%d] got from lua is no string", argc - 1);
1150 xbt_assert(argc < LUA_MAX_ARGS_COUNT,
1151 "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",
1152 __FILE__, LUA_MAX_ARGS_COUNT - 1);
1153 argv[argc - 1] = (char *) luaL_checkstring(L, -1);
1155 XBT_DEBUG("Got command line argument %s from lua", argv[argc - 1]);
1158 argv[argc--] = NULL;
1160 /* Initialize the MSG core */
1161 MSG_global_init(&argc, argv);
1162 XBT_DEBUG("Still %d arguments on command line", argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
1165 /* Keep the context mechanism informed of our lua world today */
1166 sglua_maestro_state = L;
1168 /* initialize access to my tables by children Lua states */
1170 lua_setfield(L, LUA_REGISTRYINDEX, "simgrid.maestro_tables");
1172 register_c_functions(L);
1178 * \brief Returns whether a Lua state is the maestro state.
1179 * \param L a Lua state
1180 * \return true if this is maestro
1182 int sglua_is_maestro(lua_State* L) {
1183 return L == sglua_maestro_state;
1187 * \brief Returns the maestro state.
1188 * \return the maestro Lua state
1190 lua_State* sglua_get_maestro(void) {
1191 return sglua_maestro_state;
1195 * \brief Registers the task functions into the table simgrid.task.
1197 * Also initialize the metatable of the task userdata type.
1199 * \param L a lua state
1201 static void register_task_functions(lua_State* L)
1203 /* create a table simgrid.task and fill it with task functions */
1204 luaL_openlib(L, TASK_MODULE_NAME, task_functions, 0);
1207 /* create the metatable for tasks, add it to the Lua registry */
1208 luaL_newmetatable(L, TASK_MODULE_NAME);
1209 /* simgrid.task mt */
1210 /* fill the metatable */
1211 luaL_openlib(L, NULL, task_meta, 0);
1212 /* simgrid.task mt */
1213 lua_pushvalue(L, -2);
1214 /* simgrid.task mt simgrid.task */
1215 /* metatable.__index = simgrid.task
1216 * we put the task functions inside the task itself:
1217 * this allows to write my_task:method(args) for
1218 * simgrid.task.method(my_task, args) */
1219 lua_setfield(L, -2, "__index");
1220 /* simgrid.task mt */
1226 * \brief Registers the comm functions into the table simgrid.comm.
1228 * Also initialize the metatable of the comm userdata type.
1230 * \param L a lua state
1232 static void register_comm_functions(lua_State* L)
1234 /* create a table simgrid.com and fill it with com functions */
1235 luaL_openlib(L, COMM_MODULE_NAME, comm_functions, 0);
1238 /* create the metatable for comms, add it to the Lua registry */
1239 luaL_newmetatable(L, COMM_MODULE_NAME);
1240 /* simgrid.comm mt */
1241 /* fill the metatable */
1242 luaL_openlib(L, NULL, comm_meta, 0);
1243 /* simgrid.comm mt */
1244 lua_pushvalue(L, -2);
1245 /* simgrid.comm mt simgrid.comm */
1246 /* metatable.__index = simgrid.comm
1247 * we put the comm functions inside the comm itself:
1248 * this allows to write my_comm:method(args) for
1249 * simgrid.comm.method(my_comm, args) */
1250 lua_setfield(L, -2, "__index");
1251 /* simgrid.comm mt */
1257 * \brief Registers the host functions into the table simgrid.host.
1259 * Also initialize the metatable of the host userdata type.
1261 * \param L a lua state
1263 static void register_host_functions(lua_State* L)
1265 /* create a table simgrid.host and fill it with host functions */
1266 luaL_openlib(L, HOST_MODULE_NAME, host_functions, 0);
1269 /* create the metatable for host, add it to the Lua registry */
1270 luaL_newmetatable(L, HOST_MODULE_NAME);
1271 /* simgrid.host mt */
1272 /* fill the metatable */
1273 luaL_openlib(L, NULL, host_meta, 0);
1274 /* simgrid.host mt */
1275 lua_pushvalue(L, -2);
1276 /* simgrid.host mt simgrid.host */
1277 /* metatable.__index = simgrid.host
1278 * we put the host functions inside the host userdata itself:
1279 * this allows to write my_host:method(args) for
1280 * simgrid.host.method(my_host, args) */
1281 lua_setfield(L, -2, "__index");
1282 /* simgrid.host mt */
1288 * \brief Registers the process functions into the table simgrid.process.
1289 * \param L a lua state
1291 static void register_process_functions(lua_State* L)
1293 luaL_openlib(L, PROCESS_MODULE_NAME, process_functions, 0);
1294 /* simgrid.process */
1299 * \brief Registers the platform functions into the table simgrid.platf.
1300 * \param L a lua state
1302 static void register_platf_functions(lua_State* L)
1304 luaL_openlib(L, PLATF_MODULE_NAME, platf_functions, 0);
1310 * \brief Makes the core functions available to the Lua world.
1311 * \param L a Lua world
1313 static void register_core_functions(lua_State *L)
1315 /* register the core C functions to lua */
1316 luaL_register(L, "simgrid", simgrid_functions);
1319 /* set a finalizer that cleans simgrid, by adding to the simgrid module a
1320 * dummy userdata whose __gc metamethod calls MSG_clean() */
1321 lua_newuserdata(L, sizeof(void*));
1324 /* simgrid udata mt */
1325 lua_pushcfunction(L, simgrid_gc);
1326 /* simgrid udata mt simgrid_gc */
1327 lua_setfield(L, -2, "__gc");
1328 /* simgrid udata mt */
1329 lua_setmetatable(L, -2);
1331 lua_setfield(L, -2, "__simgrid_loaded");
1338 * \brief Creates the simgrid module and make it available to Lua.
1339 * \param L a Lua world
1341 static void register_c_functions(lua_State *L)
1343 register_core_functions(L);
1344 register_task_functions(L);
1345 register_comm_functions(L);
1346 register_host_functions(L);
1347 register_process_functions(L);
1348 register_platf_functions(L);
1352 * \brief Runs a Lua function as a new simulated process.
1353 * \param argc number of arguments of the function
1354 * \param argv name of the Lua function and array of its arguments
1355 * \return result of the function
1357 static int run_lua_code(int argc, char **argv)
1359 XBT_DEBUG("Run lua code %s", argv[0]);
1361 /* create a new state, getting globals from maestro */
1362 lua_State *L = sglua_clone_maestro();
1363 MSG_process_set_data(MSG_process_self(), L);
1365 /* start the function */
1366 lua_getglobal(L, argv[0]);
1367 xbt_assert(lua_isfunction(L, -1),
1368 "There is no Lua function with name `%s'", argv[0]);
1370 /* push arguments onto the stack */
1372 for (i = 1; i < argc; i++)
1373 lua_pushstring(L, argv[i]);
1375 /* call the function */
1376 _XBT_GNUC_UNUSED int err;
1377 err = lua_pcall(L, argc - 1, 1, 0);
1378 xbt_assert(err == 0, "Error running function `%s': %s", argv[0],
1379 lua_tostring(L, -1));
1381 /* retrieve result */
1383 if (lua_isnumber(L, -1)) {
1384 res = lua_tonumber(L, -1);
1385 lua_pop(L, 1); /* pop returned value */
1388 XBT_DEBUG("Execution of Lua code %s is over", (argv ? argv[0] : "(null)"));