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 from the stack and registers it so that the
167 * process can retrieve it later knowing the C task.
168 * \param L a lua state
170 static void task_register(lua_State* L) {
172 m_task_t task = sglua_checktask(L, -1);
174 /* put in the C task a ref to the lua task so that the receiver finds it */
175 unsigned long ref = luaL_ref(L, LUA_REGISTRYINDEX);
177 MSG_task_set_data(task, (void*) ref);
181 * \brief Pushes onto the stack the Lua task corresponding to a C task.
183 * The Lua task must have been previously registered with task_register so
184 * that it can be retrieved knowing the C task.
186 * \param L a lua state
187 * \param task a C task
189 static void task_unregister(lua_State* L, m_task_t task) {
192 /* the task is in my registry, put it onto my stack */
193 unsigned long ref = (unsigned long) MSG_task_get_data(task);
194 lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
196 luaL_unref(L, LUA_REGISTRYINDEX, ref);
197 MSG_task_set_data(task, NULL);
201 * \brief This function is called when a C task has just been copied.
203 * This callback is used to move the corresponding Lua task from the sender
204 * process to the receiver process.
205 * It is executed in SIMIX kernel mode when the communication finishes,
206 * before both processes are awaken. Thus, this function is thread-safe when
207 * user processes are executed in parallel, though it modifies the Lua
208 * stack of both processes to move the task.
209 * After this function, both Lua stacks are restored in their previous state.
210 * The task is moved from the registry of the sender to the registry of the
213 * \param task the task copied
214 * \param src_process the sender
215 * \param dst_process the receiver
217 static void task_copy_callback(m_task_t task, m_process_t src_process,
218 m_process_t dst_process) {
220 lua_State* src = MSG_process_get_data(src_process);
221 lua_State* dst = MSG_process_get_data(dst_process);
225 task_unregister(src, task);
227 sglua_copy_value(src, dst);
230 task_register(dst); /* dst: ... */
232 /* the receiver is now the owner of the task and may destroy it:
233 * make the sender forget the C task so that it doesn't garbage */
234 lua_getfield(src, -1, "__simgrid_task");
235 /* src: ... task ctask */
236 m_task_t* udata = (m_task_t*) luaL_checkudata(src, -1, TASK_MODULE_NAME);
243 * \brief Sends a task to a mailbox and waits for its completion.
244 * \param L a Lua state
245 * \return number of values returned to Lua
247 * - Argument 1 (task): the task to send
248 * - Argument 2 (string or compatible): mailbox name, as a real string or any
249 * type convertible to string (numbers always are)
250 * - Return values (boolean + string): true if the communication was successful,
251 * or false plus an error string in case of failure, which may be "timeout",
252 * "host failure" or "transfer failure"
254 static int l_task_send(lua_State* L)
256 m_task_t task = sglua_checktask(L, 1);
257 const char* mailbox = luaL_checkstring(L, 2);
258 /* task mailbox ... */
263 MSG_error_t res = MSG_task_send(task, mailbox);
266 lua_pushboolean(L, 1);
271 /* the communication has failed, I'm still the owner of the task */
272 task_unregister(L, task);
274 lua_pushboolean(L, 0);
276 lua_pushstring(L, msg_errors[res]);
277 /* task false error */
283 * \brief Sends a task on a mailbox.
284 * \param L a Lua state
285 * \return number of values returned to Lua
287 * This is a non-blocking function: use simgrid.comm.wait() or
288 * simgrid.comm.test() to end the communication.
290 * - Argument 1 (task): the task to send
291 * - Argument 2 (string or compatible): mailbox name, as a real string or any
292 * type convertible to string (numbers always are)
293 * - Return value (comm): a communication object to be used later with wait or test
295 static int l_task_isend(lua_State* L)
297 m_task_t task = sglua_checktask(L, 1);
298 const char* mailbox = luaL_checkstring(L, 2);
299 /* task mailbox ... */
304 msg_comm_t comm = MSG_task_isend(task, mailbox);
306 msg_comm_t* userdata = (msg_comm_t*) lua_newuserdata(L, sizeof(msg_comm_t));
309 luaL_getmetatable(L, COMM_MODULE_NAME);
311 lua_setmetatable(L, -2);
317 * \brief Sends a task on a mailbox on a best effort way (detached send).
318 * \param L a Lua state
319 * \return number of values returned to Lua
321 * Like simgrid.task.isend, this is a non-blocking function.
322 * You can use this function if you don't care about when the communication
323 * ends and whether it succeeds.
324 * FIXME: isn't this equivalent to calling simgrid.task.isend() and ignoring
327 * - Argument 1 (task): the task to send
328 * - Argument 2 (string or compatible): mailbox name, as a real string or any
329 * type convertible to string (numbers always are)
331 static int l_task_dsend(lua_State* L)
333 m_task_t task = sglua_checktask(L, 1);
334 const char* mailbox = luaL_checkstring(L, 2);
335 /* task mailbox ... */
340 MSG_task_dsend(task, mailbox, NULL);
345 * \brief Receives a task.
346 * \param L a Lua state
347 * \return number of values returned to Lua
349 * - Argument 1 (string or compatible): mailbox name, as a real string or any
350 * type convertible to string (numbers always are)
351 * - Argument 2 (number, optional): timeout (default is no timeout)
352 * - Return values (task or nil + string): the task received, or nil plus an
353 * error message if the communication has failed
355 static int l_task_recv(lua_State* L)
357 m_task_t task = NULL;
358 const char* mailbox = luaL_checkstring(L, 1);
360 if (lua_gettop(L) >= 2) {
361 /* mailbox timeout ... */
362 timeout = luaL_checknumber(L, 2);
367 /* no timeout by default */
370 MSG_error_t res = MSG_task_receive_with_timeout(&task, mailbox, timeout);
373 task_unregister(L, task);
374 /* mailbox ... task */
379 /* mailbox ... nil */
380 lua_pushstring(L, msg_errors[res]);
381 /* mailbox ... nil error */
387 * \brief Asynchronously receives a task on a mailbox.
388 * \param L a Lua state
389 * \return number of values returned to Lua
391 * This is a non-blocking function: use simgrid.comm.wait() or
392 * simgrid.comm.test() to end the communication and get the task in case of
395 * - Argument 1 (string or compatible): mailbox name, as a real string or any
396 * type convertible to string (numbers always are)
397 * - Return value (comm): a communication object to be used later with wait or test
400 static int l_task_irecv(lua_State* L)
402 const char* mailbox = luaL_checkstring(L, 1);
404 m_task_t* task = xbt_new0(m_task_t, 1); // FIXME fix this leak
405 msg_comm_t comm = MSG_task_irecv(task, mailbox);
407 msg_comm_t* userdata = (msg_comm_t*) lua_newuserdata(L, sizeof(msg_comm_t));
408 /* mailbox ... comm */
410 luaL_getmetatable(L, COMM_MODULE_NAME);
411 /* mailbox ... comm mt */
412 lua_setmetatable(L, -2);
413 /* mailbox ... comm */
417 static const luaL_reg task_functions[] = {
419 {"get_name", l_task_get_name},
420 {"get_computation_duration", l_task_get_computation_duration},
421 {"execute", l_task_execute},
422 {"send", l_task_send},
423 {"isend", l_task_isend},
424 {"dsend", l_task_dsend},
425 {"recv", l_task_recv},
426 {"irecv", l_task_irecv},
431 * \brief Finalizes the userdata of a task.
432 * \param L a Lua state
433 * \return number of values returned to Lua
435 * - Argument 1 (userdata): a C task, possibly NULL if it was sent to another
438 static int l_task_gc(lua_State* L)
441 m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
442 /* the task is NULL if I sent it to someone else */
444 MSG_task_destroy(task);
450 * \brief Returns a string representation of a C task.
451 * \param L a Lua state
452 * \return number of values returned to Lua
454 * - Argument 1 (userdata): a task
455 * - Return value (string): a string describing this task
457 static int l_task_tostring(lua_State* L)
459 m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
460 lua_pushfstring(L, "Task: %p", task);
465 * \brief Metamethods of both a task table and the userdata inside it.
467 static const luaL_reg task_meta[] = {
468 {"__gc", l_task_gc}, /* will be called only for userdata */
469 {"__tostring", l_task_tostring},
473 /* ********************************************************************************* */
474 /* simgrid.comm API */
475 /* ********************************************************************************* */
478 * \brief Ensures that a value in the stack is a comm and returns it.
479 * \param L a Lua state
480 * \param index an index in the Lua stack
483 static msg_comm_t sglua_checkcomm(lua_State* L, int index)
485 msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, index, COMM_MODULE_NAME));
490 * \brief Blocks the current process until a communication is finished.
491 * \param L a Lua state
492 * \return number of values returned to Lua
494 * - Argument 1 (comm): a comm (previously created by isend or irecv)
495 * - Argument 2 (number, optional): timeout (default is no timeout)
496 * - Return values (task or nil + string): in case of success, returns the task
497 * received if you are the receiver and nil if you are the sender. In case of
498 * failure, returns nil plus an error string.
500 static int l_comm_wait(lua_State* L) {
502 msg_comm_t comm = sglua_checkcomm(L, 1);
504 if (lua_gettop(L) >= 2) {
505 timeout = luaL_checknumber(L, 2);
508 MSG_error_t res = MSG_comm_wait(comm, timeout);
511 m_task_t task = MSG_comm_get_task(comm);
512 if (MSG_task_get_sender(task) == MSG_process_self()) {
517 /* I'm the receiver: find the Lua task from the C task */
518 task_unregister(L, task);
524 /* the communication has failed */
527 lua_pushstring(L, msg_errors[res]);
528 /* comm ... nil error */
534 * @brief Returns whether a communication is finished.
536 * Unlike wait(), This function always returns immediately.
538 * - Argument 1 (comm): a comm (previously created by isend or irecv)
539 * - Return values (task/boolean or nil + string): if the communication is not
540 * finished, return false. If the communication is finished and was successful,
541 * returns the task received if you are the receiver or true if you are the
542 * sender. If the communication is finished and has failed, returns nil
543 * plus an error string.
545 static int l_comm_test(lua_State* L) {
547 msg_comm_t comm = sglua_checkcomm(L, 1);
549 if (!MSG_comm_test(comm)) {
550 /* not finished yet */
551 lua_pushboolean(L, 0);
556 /* finished but may have failed */
557 MSG_error_t res = MSG_comm_get_status(comm);
560 m_task_t task = MSG_comm_get_task(comm);
561 if (MSG_task_get_sender(task) == MSG_process_self()) {
563 lua_pushboolean(L, 1);
568 /* I'm the receiver: find the Lua task from the C task*/
569 task_unregister(L, task);
575 /* the communication has failed */
578 lua_pushstring(L, msg_errors[res]);
579 /* comm ... nil error */
585 static const luaL_reg comm_functions[] = {
586 {"wait", l_comm_wait},
587 {"test", l_comm_test},
588 /* TODO waitany, testany */
593 * \brief Finalizes a comm userdata.
594 * \param L a Lua state
595 * \return number of values returned to Lua
597 * - Argument 1 (userdata): a comm
599 static int l_comm_gc(lua_State* L)
602 msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, 1, COMM_MODULE_NAME));
603 MSG_comm_destroy(comm);
608 * \brief Metamethods of the comm userdata.
610 static const luaL_reg comm_meta[] = {
615 /* ********************************************************************************* */
616 /* simgrid.host API */
617 /* ********************************************************************************* */
620 * \brief Ensures that a value in the stack is a host and returns it.
621 * \param L a Lua state
622 * \param index an index in the Lua stack
623 * \return the C host corresponding to this Lua host
625 static m_host_t sglua_checkhost(lua_State * L, int index)
628 luaL_checktype(L, index, LUA_TTABLE);
629 lua_getfield(L, index, "__simgrid_host");
630 pi = (m_host_t *) luaL_checkudata(L, lua_gettop(L), HOST_MODULE_NAME);
632 luaL_typerror(L, index, HOST_MODULE_NAME);
635 luaL_error(L, "null Host");
641 * \brief Returns a host given its name.
642 * \param L a Lua state
643 * \return number of values returned to Lua
645 * - Argument 1 (string): name of a host
646 * - Return value (host): the corresponding host
648 static int l_host_get_by_name(lua_State * L)
650 const char *name = luaL_checkstring(L, 1);
651 XBT_DEBUG("Getting Host from name...");
652 m_host_t msg_host = MSG_get_host_by_name(name);
654 luaL_error(L, "null Host : MSG_get_host_by_name failed");
656 lua_newtable(L); /* create a table, put the userdata on top of it */
657 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
658 *lua_host = msg_host;
659 luaL_getmetatable(L, HOST_MODULE_NAME);
660 lua_setmetatable(L, -2);
661 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
662 /* remove the args from the stack */
668 * \brief Returns the name of a host.
669 * \param L a Lua state
670 * \return number of values returned to Lua
672 * - Argument 1 (host): a host
673 * - Return value (string): name of this host
675 static int l_host_get_name(lua_State * L)
677 m_host_t ht = sglua_checkhost(L, 1);
678 lua_pushstring(L, MSG_host_get_name(ht));
683 * \brief Returns the number of existing hosts.
684 * \param L a Lua state
685 * \return number of values returned to Lua
687 * - Return value (number): number of hosts
689 static int l_host_number(lua_State * L)
691 lua_pushnumber(L, MSG_get_host_number());
696 * \brief Returns the host given its index.
697 * \param L a Lua state
698 * \return number of values returned to Lua
700 * - Argument 1 (number): an index (1 is the first)
701 * - Return value (host): the host at this index
703 static int l_host_at(lua_State * L)
705 int index = luaL_checkinteger(L, 1);
706 m_host_t host = MSG_get_host_table()[index - 1]; // lua indexing start by 1 (lua[1] <=> C[0])
707 lua_newtable(L); /* create a table, put the userdata on top of it */
708 m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
710 luaL_getmetatable(L, HOST_MODULE_NAME);
711 lua_setmetatable(L, -2);
712 lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
717 * \brief Returns the host where the current process is located.
718 * \param L a Lua state
719 * \return number of values returned to Lua
721 * - Return value (host): the current host
723 static int l_host_self(lua_State * L)
726 m_host_t host = MSG_host_self();
729 m_host_t* lua_host = (m_host_t*) lua_newuserdata(L, sizeof(m_host_t));
732 luaL_getmetatable(L, HOST_MODULE_NAME);
734 lua_setmetatable(L, -2);
736 lua_setfield(L, -2, "__simgrid_host");
742 * \brief Returns the value of a host property.
743 * \param L a Lua state
744 * \return number of values returned to Lua
746 * - Argument 1 (host): a host
747 * - Argument 2 (string): name of the property to get
748 * - Return value (string): the value of this property
750 static int l_host_get_property_value(lua_State * L)
752 m_host_t ht = sglua_checkhost(L, 1);
753 const char *prop = luaL_checkstring(L, 2);
754 lua_pushstring(L,MSG_host_get_property_value(ht,prop));
759 * \brief Makes the current process sleep for a while.
760 * \param L a Lua state
761 * \return number of values returned to Lua
763 * - Argument 1 (number): duration of the sleep
765 static int l_host_sleep(lua_State *L)
767 int time = luaL_checknumber(L, 1);
768 MSG_process_sleep(time);
773 * \brief Destroys a host.
774 * \param L a Lua state
775 * \return number of values returned to Lua
777 * - Argument 1 (host): the host to destroy
779 static int l_host_destroy(lua_State *L)
781 m_host_t ht = sglua_checkhost(L, 1);
782 __MSG_host_destroy(ht);
786 static const luaL_reg host_functions[] = {
787 {"get_by_name", l_host_get_by_name},
788 {"name", l_host_get_name},
789 {"number", l_host_number},
791 {"self", l_host_self},
792 {"get_prop_value", l_host_get_property_value},
793 {"sleep", l_host_sleep},
794 {"destroy", l_host_destroy},
795 // Bypass XML Methods
796 {"set_function", console_set_function},
797 {"set_property", console_host_set_property},
802 * \brief Returns a string representation of a host.
803 * \param L a Lua state
804 * \return number of values returned to Lua
806 * - Argument 1 (userdata): a host
807 * - Return value (string): a string describing this host
809 static int l_host_tostring(lua_State * L)
811 lua_pushfstring(L, "Host :%p", lua_touserdata(L, 1));
815 static const luaL_reg host_meta[] = {
816 {"__tostring", l_host_tostring},
820 /* ********************************************************************************* */
821 /* simgrid.process API */
822 /* ********************************************************************************* */
825 * \brief Makes the current process sleep for a while.
826 * \param L a Lua state
827 * \return number of values returned to Lua
829 * - Argument 1 (number): duration of the sleep
830 * - Return value (nil or string): nil in everything went ok, or a string error
831 * if case of failure ("host failure")
833 static int l_process_sleep(lua_State* L)
835 double duration = luaL_checknumber(L, 1);
836 MSG_error_t res = MSG_process_sleep(duration);
843 case MSG_HOST_FAILURE:
844 lua_pushliteral(L, "host failure");
848 xbt_die("Unexpected result of MSG_process_sleep: %d, please report this bug", res);
852 static const luaL_reg process_functions[] = {
853 {"sleep", l_process_sleep},
854 /* TODO: self, create, kill, suspend, is_suspended, resume, get_name,
855 * get_pid, get_ppid, migrate
860 /* ********************************************************************************* */
861 /* lua_stub_generator functions */
862 /* ********************************************************************************* */
864 xbt_dict_t process_function_set;
865 xbt_dynar_t process_list;
866 xbt_dict_t machine_set;
867 static s_process_t process;
869 void s_process_free(void *process)
871 s_process_t *p = (s_process_t *) process;
873 for (i = 0; i < p->argc; i++)
879 static int gras_add_process_function(lua_State * L)
882 const char *process_host = luaL_checkstring(L, 1);
883 const char *process_function = luaL_checkstring(L, 2);
885 if (xbt_dict_is_empty(machine_set)
886 || xbt_dict_is_empty(process_function_set)
887 || xbt_dynar_is_empty(process_list)) {
888 process_function_set = xbt_dict_new_homogeneous(NULL);
889 process_list = xbt_dynar_new(sizeof(s_process_t), s_process_free);
890 machine_set = xbt_dict_new_homogeneous(NULL);
893 xbt_dict_set(machine_set, process_host, NULL, NULL);
894 xbt_dict_set(process_function_set, process_function, NULL, NULL);
897 process.argv = xbt_new(char *, 1);
898 process.argv[0] = xbt_strdup(process_function);
899 process.host = strdup(process_host);
902 while (lua_next(L, 3) != 0) {
903 arg = lua_tostring(L, -1);
906 xbt_realloc(process.argv, (process.argc) * sizeof(char *));
907 process.argv[(process.argc) - 1] = xbt_strdup(arg);
909 XBT_DEBUG("index = %f , arg = %s \n", lua_tonumber(L, -2),
910 lua_tostring(L, -1));
914 //add to the process list
915 xbt_dynar_push(process_list, &process);
919 static int gras_generate(lua_State * L)
921 const char *project_name = luaL_checkstring(L, 1);
922 generate_sim(project_name);
923 generate_rl(project_name);
924 generate_makefile_local(project_name);
928 /* ********************************************************************************* */
929 /* simgrid.platf API */
930 /* ********************************************************************************* */
932 static const luaL_reg platf_functions[] = {
933 {"open", console_open},
934 {"close", console_close},
935 {"AS_open", console_AS_open},
936 {"AS_close", console_AS_close},
937 {"host_new", console_add_host},
938 {"link_new", console_add_link},
939 {"router_new", console_add_router},
940 {"route_new", console_add_route},
944 /* ********************************************************************************* */
946 /* ********************************************************************************* */
949 * \brief Deploys your application.
950 * \param L a Lua state
951 * \return number of values returned to Lua
953 * - Argument 1 (string): name of the deployment file to load
955 static int launch_application(lua_State* L) {
957 const char* file = luaL_checkstring(L, 1);
958 MSG_function_register_default(run_lua_code);
959 MSG_launch_application(file);
964 * \brief Creates the platform.
965 * \param L a Lua state
966 * \return number of values returned to Lua
968 * - Argument 1 (string): name of the platform file to load
970 static int create_environment(lua_State* L) {
972 const char* file = luaL_checkstring(L, 1);
973 XBT_DEBUG("Loading environment file %s", file);
974 MSG_create_environment(file);
979 * \brief Prints a log string with debug level.
980 * \param L a Lua state
981 * \return number of values returned to Lua
983 * - Argument 1 (string): the text to print
985 static int debug(lua_State* L) {
987 const char* str = luaL_checkstring(L, 1);
988 XBT_DEBUG("%s", str);
993 * \brief Prints a log string with info level.
994 * \param L a Lua state
995 * \return number of values returned to Lua
997 * - Argument 1 (string): the text to print
999 static int info(lua_State* L) {
1001 const char* str = luaL_checkstring(L, 1);
1002 XBT_INFO("%s", str);
1007 * \brief Runs your application.
1008 * \param L a Lua state
1009 * \return number of values returned to Lua
1011 static int run(lua_State* L) {
1018 * \brief Returns the current simulated time.
1019 * \param L a Lua state
1020 * \return number of values returned to Lua
1022 * - Return value (number): the simulated time
1024 static int get_clock(lua_State* L) {
1026 lua_pushnumber(L, MSG_get_clock());
1031 * \brief Cleans the simulation.
1032 * \param L a Lua state
1033 * \return number of values returned to Lua
1035 static int simgrid_gc(lua_State * L)
1042 * Register platform for MSG
1044 static int msg_register_platform(lua_State * L)
1046 /* Tell Simgrid we dont wanna use its parser */
1047 //surf_parse = console_parse_platform;
1048 surf_parse_reset_callbacks();
1049 MSG_create_environment(NULL);
1054 * Register platform for Simdag
1057 static int sd_register_platform(lua_State * L)
1059 //surf_parse = console_parse_platform_wsL07;
1060 surf_parse_reset_callbacks();
1061 SD_create_environment(NULL);
1066 * Register platform for gras
1068 static int gras_register_platform(lua_State * L)
1070 //surf_parse = console_parse_platform;
1071 surf_parse_reset_callbacks();
1072 gras_create_environment(NULL);
1077 * Register applicaiton for MSG
1079 static int msg_register_application(lua_State * L)
1081 MSG_function_register_default(run_lua_code);
1082 //surf_parse = console_parse_application;
1083 MSG_launch_application(NULL);
1088 * Register application for gras
1090 static int gras_register_application(lua_State * L)
1092 gras_function_register_default(run_lua_code);
1093 //surf_parse = console_parse_application;
1094 gras_launch_application(NULL);
1098 static const luaL_Reg simgrid_functions[] = {
1099 {"create_environment", create_environment},
1100 {"launch_application", launch_application},
1104 {"get_clock", get_clock},
1106 {"platform", create_environment},
1107 {"application", launch_application},
1108 /* methods to bypass XML parser */
1109 {"msg_register_platform", msg_register_platform},
1110 {"sd_register_platform", sd_register_platform},
1111 {"msg_register_application", msg_register_application},
1112 {"gras_register_platform", gras_register_platform},
1113 {"gras_register_application", gras_register_application},
1114 /* gras sub generator method */
1115 {"gras_set_process_function", gras_add_process_function},
1116 {"gras_generate", gras_generate},
1120 /* ********************************************************************************* */
1121 /* module management functions */
1122 /* ********************************************************************************* */
1124 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
1127 * \brief Opens the simgrid Lua module.
1129 * This function is called automatically by the Lua interpreter when some
1130 * Lua code requires the "simgrid" module.
1132 * \param L the Lua state
1134 int luaopen_simgrid(lua_State *L)
1136 XBT_DEBUG("luaopen_simgrid *****");
1138 /* Get the command line arguments from the lua interpreter */
1139 char **argv = malloc(sizeof(char *) * LUA_MAX_ARGS_COUNT);
1141 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? */
1143 lua_getglobal(L, "arg");
1144 /* if arg is a null value, it means we use lua only as a script to init platform
1145 * else it should be a table and then take arg in consideration
1147 if (lua_istable(L, -1)) {
1151 lua_pushinteger(L, argc - 2);
1152 lua_gettable(L, -2);
1153 if (lua_isnil(L, -1)) {
1156 xbt_assert(lua_isstring(L, -1),
1157 "argv[%d] got from lua is no string", argc - 1);
1158 xbt_assert(argc < LUA_MAX_ARGS_COUNT,
1159 "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",
1160 __FILE__, LUA_MAX_ARGS_COUNT - 1);
1161 argv[argc - 1] = (char *) luaL_checkstring(L, -1);
1163 XBT_DEBUG("Got command line argument %s from lua", argv[argc - 1]);
1166 argv[argc--] = NULL;
1168 /* Initialize the MSG core */
1169 MSG_global_init(&argc, argv);
1170 XBT_DEBUG("Still %d arguments on command line", argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
1173 /* Keep the context mechanism informed of our lua world today */
1174 sglua_maestro_state = L;
1176 /* initialize access to my tables by children Lua states */
1178 lua_setfield(L, LUA_REGISTRYINDEX, "simgrid.maestro_tables");
1180 register_c_functions(L);
1186 * \brief Returns whether a Lua state is the maestro state.
1187 * \param L a Lua state
1188 * \return true if this is maestro
1190 int sglua_is_maestro(lua_State* L) {
1191 return L == sglua_maestro_state;
1195 * \brief Returns the maestro state.
1196 * \return the maestro Lua state
1198 lua_State* sglua_get_maestro(void) {
1199 return sglua_maestro_state;
1203 * \brief Registers the task functions into the table simgrid.task.
1205 * Also initialize the metatable of the task userdata type.
1207 * \param L a lua state
1209 static void register_task_functions(lua_State* L)
1211 /* create a table simgrid.task and fill it with task functions */
1212 luaL_openlib(L, TASK_MODULE_NAME, task_functions, 0);
1215 /* create the metatable for tasks, add it to the Lua registry */
1216 luaL_newmetatable(L, TASK_MODULE_NAME);
1217 /* simgrid.task mt */
1218 /* fill the metatable */
1219 luaL_openlib(L, NULL, task_meta, 0);
1220 /* simgrid.task mt */
1221 lua_pushvalue(L, -2);
1222 /* simgrid.task mt simgrid.task */
1223 /* metatable.__index = simgrid.task
1224 * we put the task functions inside the task itself:
1225 * this allows to write my_task:method(args) for
1226 * simgrid.task.method(my_task, args) */
1227 lua_setfield(L, -2, "__index");
1228 /* simgrid.task mt */
1232 /* set up MSG to copy Lua tasks between states */
1233 MSG_task_set_copy_callback(task_copy_callback);
1237 * \brief Registers the comm functions into the table simgrid.comm.
1239 * Also initialize the metatable of the comm userdata type.
1241 * \param L a lua state
1243 static void register_comm_functions(lua_State* L)
1245 /* create a table simgrid.com and fill it with com functions */
1246 luaL_openlib(L, COMM_MODULE_NAME, comm_functions, 0);
1249 /* create the metatable for comms, add it to the Lua registry */
1250 luaL_newmetatable(L, COMM_MODULE_NAME);
1251 /* simgrid.comm mt */
1252 /* fill the metatable */
1253 luaL_openlib(L, NULL, comm_meta, 0);
1254 /* simgrid.comm mt */
1255 lua_pushvalue(L, -2);
1256 /* simgrid.comm mt simgrid.comm */
1257 /* metatable.__index = simgrid.comm
1258 * we put the comm functions inside the comm itself:
1259 * this allows to write my_comm:method(args) for
1260 * simgrid.comm.method(my_comm, args) */
1261 lua_setfield(L, -2, "__index");
1262 /* simgrid.comm mt */
1268 * \brief Registers the host functions into the table simgrid.host.
1270 * Also initialize the metatable of the host userdata type.
1272 * \param L a lua state
1274 static void register_host_functions(lua_State* L)
1276 /* create a table simgrid.host and fill it with host functions */
1277 luaL_openlib(L, HOST_MODULE_NAME, host_functions, 0);
1280 /* create the metatable for host, add it to the Lua registry */
1281 luaL_newmetatable(L, HOST_MODULE_NAME);
1282 /* simgrid.host mt */
1283 /* fill the metatable */
1284 luaL_openlib(L, NULL, host_meta, 0);
1285 /* simgrid.host mt */
1286 lua_pushvalue(L, -2);
1287 /* simgrid.host mt simgrid.host */
1288 /* metatable.__index = simgrid.host
1289 * we put the host functions inside the host userdata itself:
1290 * this allows to write my_host:method(args) for
1291 * simgrid.host.method(my_host, args) */
1292 lua_setfield(L, -2, "__index");
1293 /* simgrid.host mt */
1299 * \brief Registers the process functions into the table simgrid.process.
1300 * \param L a lua state
1302 static void register_process_functions(lua_State* L)
1304 luaL_openlib(L, PROCESS_MODULE_NAME, process_functions, 0);
1305 /* simgrid.process */
1310 * \brief Registers the platform functions into the table simgrid.platf.
1311 * \param L a lua state
1313 static void register_platf_functions(lua_State* L)
1315 luaL_openlib(L, PLATF_MODULE_NAME, platf_functions, 0);
1321 * \brief Makes the core functions available to the Lua world.
1322 * \param L a Lua world
1324 static void register_core_functions(lua_State *L)
1326 /* register the core C functions to lua */
1327 luaL_register(L, "simgrid", simgrid_functions);
1330 /* set a finalizer that cleans simgrid, by adding to the simgrid module a
1331 * dummy userdata whose __gc metamethod calls MSG_clean() */
1332 lua_newuserdata(L, sizeof(void*));
1335 /* simgrid udata mt */
1336 lua_pushcfunction(L, simgrid_gc);
1337 /* simgrid udata mt simgrid_gc */
1338 lua_setfield(L, -2, "__gc");
1339 /* simgrid udata mt */
1340 lua_setmetatable(L, -2);
1342 lua_setfield(L, -2, "__simgrid_loaded");
1349 * \brief Creates the simgrid module and make it available to Lua.
1350 * \param L a Lua world
1352 static void register_c_functions(lua_State *L)
1354 register_core_functions(L);
1355 register_task_functions(L);
1356 register_comm_functions(L);
1357 register_host_functions(L);
1358 register_process_functions(L);
1359 register_platf_functions(L);
1363 * \brief Runs a Lua function as a new simulated process.
1364 * \param argc number of arguments of the function
1365 * \param argv name of the Lua function and array of its arguments
1366 * \return result of the function
1368 static int run_lua_code(int argc, char **argv)
1370 XBT_DEBUG("Run lua code %s", argv[0]);
1372 /* create a new state, getting globals from maestro */
1373 lua_State *L = sglua_clone_maestro();
1374 MSG_process_set_data(MSG_process_self(), L);
1376 /* start the function */
1377 lua_getglobal(L, argv[0]);
1378 xbt_assert(lua_isfunction(L, -1),
1379 "There is no Lua function with name `%s'", argv[0]);
1381 /* push arguments onto the stack */
1383 for (i = 1; i < argc; i++)
1384 lua_pushstring(L, argv[i]);
1386 /* call the function */
1387 _XBT_GNUC_UNUSED int err;
1388 err = lua_pcall(L, argc - 1, 1, 0);
1389 xbt_assert(err == 0, "Error running function `%s': %s", argv[0],
1390 lua_tostring(L, -1));
1392 /* retrieve result */
1394 if (lua_isnumber(L, -1)) {
1395 res = lua_tonumber(L, -1);
1396 lua_pop(L, 1); /* pop returned value */
1399 XBT_DEBUG("Execution of Lua code %s is over", (argv ? argv[0] : "(null)"));