1 /* SimGrid Lua bindings */
3 /* Copyright (c) 2010, the SimGrid team. All right reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
17 #define TASK_MODULE_NAME "simgrid.Task"
19 /* ********************************************************************************* */
20 /* helper functions */
21 /* ********************************************************************************* */
23 static void stackDump (lua_State *L) {
27 int top = lua_gettop(L);
30 p+=sprintf(p,"STACK(top=%d): ",top);
31 for (i = 1; i <= top; i++) { /* repeat for each level */
32 int t = lua_type(L, i);
35 case LUA_TSTRING: /* strings */
36 p+=sprintf(p,"`%s'", lua_tostring(L, i));
39 case LUA_TBOOLEAN: /* booleans */
40 p+=sprintf(p,lua_toboolean(L, i) ? "true" : "false");
43 case LUA_TNUMBER: /* numbers */
44 p+=sprintf(p,"%g", lua_tonumber(L, i));
47 default: /* other values */
48 if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
51 p+=printf(p,"%s", lua_typename(L, t));
56 p+=sprintf(p," "); /* put a separator */
61 /** @brief ensures that a userdata on the stack is a task and returns the pointer inside the userdata */
62 static m_task_t checkTask (lua_State *L,int index) {
64 luaL_checktype(L,index,LUA_TUSERDATA);
65 pi = (m_task_t*)luaL_checkudata(L,index,TASK_MODULE_NAME);
67 luaL_typerror(L,index,TASK_MODULE_NAME);
70 luaL_error(L,"null Task");
74 /** @brief leaves a new userdata on top of the stack, sets its metatable, and sets the Task pointer inside the userdata */
75 static m_task_t *pushTask (lua_State *L,m_task_t tk,int flag) {
79 pi = (m_task_t*)MSG_task_get_data(tk);//(m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
82 pi = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
88 DEBUG1("push lua task with Name : %s \n",MSG_task_get_name(*pi));
89 luaL_getmetatable(L,TASK_MODULE_NAME);
90 lua_setmetatable(L,-2);
95 /* ********************************************************************************* */
96 /* wrapper functions */
97 /* ********************************************************************************* */
99 static int Task_new(lua_State* L) {
100 const char *name=luaL_checkstring(L,1);
101 int comp_size = luaL_checkint(L,2);
102 int msg_size = luaL_checkint(L,3);
103 // FIXME: data shouldn't be NULL I guess
104 //pushTask(L,MSG_task_create(name,comp_size,msg_size,NULL));
105 m_task_t msg_task = MSG_task_create(name,comp_size,msg_size,NULL);
106 m_task_t *lua_task = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
107 *lua_task = msg_task;
108 MSG_task_set_data(msg_task,lua_task);
109 pushTask(L,msg_task,0);
110 INFO0("Created task");
114 static int Task_get_name(lua_State *L) {
115 m_task_t tk = checkTask(L,1);
116 lua_pushstring(L,MSG_task_get_name(tk));
120 static int Task_computation_duration(lua_State *L){
121 m_task_t tk = checkTask(L,1);
122 lua_pushnumber(L,MSG_task_get_compute_duration (tk));
126 static int Task_execute(lua_State *L){
127 m_task_t tk = checkTask(L,1);
128 int res = MSG_task_execute(tk);
129 lua_pushnumber(L,res);
133 static int Task_destroy(lua_State *L) {
134 m_task_t tk = checkTask(L,1);
135 int res = MSG_task_destroy(tk);
136 lua_pushnumber(L,res);
139 static int Task_send(lua_State *L) {
140 m_task_t tk = checkTask(L,1);
141 const char *mailbox = luaL_checkstring(L,2);
142 MSG_error_t res = MSG_task_send(tk,mailbox);
147 ERROR0("MSG_task_send failed : Timeout");
149 case MSG_TRANSFER_FAILURE :
150 ERROR0("MSG_task_send failed : Transfer Failure");
152 case MSG_HOST_FAILURE :
153 ERROR0("MSG_task_send failed : Host Failure ");
156 ERROR0("MSG_task_send failed : Unexpected error , please report this bug");
162 static int Task_recv(lua_State *L) {
164 const char *mailbox = luaL_checkstring(L,1);
165 MSG_error_t res = MSG_task_receive(&tk,mailbox);
166 if (MSG_task_has_data(tk)) DEBUG1("Receive The Task with Name : %s \n",MSG_task_get_name(tk));
167 MSG_task_ref(tk); //FIXME: kill it once a ctask cannot be in more than one luatask anymore
172 ERROR0("MSG_task_receive failed : Timeout");
174 case MSG_TRANSFER_FAILURE :
175 ERROR0("MSG_task_receive failed : Transfer Failure");
177 case MSG_HOST_FAILURE :
178 ERROR0("MSG_task_receive failed : Host Failure ");
181 ERROR0("MSG_task_receive failed : Unexpected error , please report this bug");
185 DEBUG1("Task Name : >>>%s",MSG_task_get_name(tk));
186 //lua_pushlightuserdata(L,MSG_task_get_data(tk));
191 static const luaL_reg Task_methods[] = {
193 {"name", Task_get_name},
194 {"computation_duration", Task_computation_duration},
195 {"execute", Task_execute},
196 {"destroy", Task_destroy},
201 static int Task_gc(lua_State *L) {
202 m_task_t tk=checkTask(L,1);
203 if (tk) MSG_task_destroy(tk);
204 //printf("GoodBye Task(%p)\n",lua_touserdata(L,1));
208 static int Task_tostring(lua_State *L) {
209 lua_pushfstring(L, "Task :%p",lua_touserdata(L,1));
214 static const luaL_reg Task_meta[] = {
216 {"__tostring", Task_tostring},
221 * Environment related
223 extern lua_State *simgrid_lua_state;
225 static int run_lua_code(int argc,char **argv) {
226 DEBUG1("Run lua code %s",argv[0]);
227 // fprintf(stderr,"Run lua code %s\n", (argv ? argv[0] : "(null)"));
228 lua_State *L = lua_newthread(simgrid_lua_state);
229 int ref = luaL_ref(simgrid_lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
232 /* Start the co-routine */
233 lua_getglobal(L,argv[0]);
234 xbt_assert1(lua_isfunction(L,-1),
235 "The lua function %s does not seem to exist",argv[0]);
237 // push arguments onto the stack
240 lua_pushstring(L,argv[i]);
242 // Call the function (in resume)
243 xbt_assert2(lua_pcall(L, argc-1, 1, 0) == 0,
244 "error running function `%s': %s",argv[0], lua_tostring(L, -1));
246 /* retrieve result */
247 if (lua_isnumber(L, -1)) {
248 res = lua_tonumber(L, -1);
249 lua_pop(L, 1); /* pop returned value */
253 luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
254 DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
257 static int launch_application(lua_State *L) {
258 const char * file = luaL_checkstring(L,1);
259 MSG_function_register_default(run_lua_code);
260 MSG_launch_application(file);
263 #include "simix/simix.h" //FIXME: KILLME when debugging on simix internals become useless
264 static int create_environment(lua_State *L) {
265 const char *file = luaL_checkstring(L,1);
266 DEBUG1("Loading environment file %s",file);
267 MSG_create_environment(file);
268 smx_host_t *hosts = SIMIX_host_get_table();
270 for (i=0;i<SIMIX_host_get_number();i++) {
271 DEBUG1("We have an host %s", SIMIX_host_get_name(hosts[i]));
276 static int debug(lua_State *L) {
277 const char *str = luaL_checkstring(L,1);
281 static int info(lua_State *L) {
282 const char *str = luaL_checkstring(L,1);
286 static int run(lua_State *L) {
290 static int clean(lua_State *L) {
294 static const luaL_Reg simgrid_funcs[] = {
295 { "create_environment", create_environment},
296 { "launch_application", launch_application},
302 { "platform", create_environment},
303 { "application", launch_application},
307 /* ********************************************************************************* */
308 /* module management functions */
309 /* ********************************************************************************* */
311 extern const char*xbt_ctx_factory_to_use; /*Hack: let msg load directly the right factory */
313 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
315 int luaopen_simgrid(lua_State* L); // Fuck gcc: we don't need that prototype
316 int luaopen_simgrid(lua_State* L) {
317 //xbt_ctx_factory_to_use = "lua";
319 char **argv=malloc(sizeof(char*)*LUA_MAX_ARGS_COUNT);
321 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? */
322 /* Get the command line arguments from the lua interpreter */
323 lua_getglobal(L,"arg");
324 xbt_assert1(lua_istable(L,-1),"arg parameter is not a table but a %s",lua_typename(L,-1));
328 lua_pushinteger(L,argc-2);
330 if (lua_isnil(L,-1)) {
333 xbt_assert1(lua_isstring(L,-1),"argv[%d] got from lua is no string",argc-1);
334 xbt_assert2(argc<LUA_MAX_ARGS_COUNT,
335 "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",
336 __FILE__,LUA_MAX_ARGS_COUNT-1);
337 argv[argc-1] = (char*)luaL_checkstring(L,-1);
339 DEBUG1("Got command line argument %s from lua",argv[argc-1]);
344 /* Initialize the MSG core */
345 MSG_global_init(&argc,argv);
346 DEBUG1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
348 /* register the core C functions to lua */
349 luaL_register(L, "simgrid", simgrid_funcs);
350 /* register the tasks to lua */
351 luaL_openlib(L,TASK_MODULE_NAME,Task_methods,0); //create methods table,add it to the globals
352 luaL_newmetatable(L,TASK_MODULE_NAME); //create metatable for Task,add it to the Lua registry
353 luaL_openlib(L,0,Task_meta,0);// fill metatable
354 lua_pushliteral(L,"__index");
355 lua_pushvalue(L,-3); //dup methods table
356 lua_rawset(L,-3); //matatable.__index = methods
357 lua_pushliteral(L,"__metatable");
358 lua_pushvalue(L,-3); //dup methods table
359 lua_rawset(L,-3); //hide metatable:metatable.__metatable = methods
360 lua_pop(L,1); //drop metatable
362 /* Keep the context mechanism informed of our lua world today */
363 simgrid_lua_state = L;