XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua, bindings, "Lua Bindings");
-#define TASK_MODULE_NAME "simgrid.Task"
-#define HOST_MODULE_NAME "simgrid.Host"
+#define TASK_MODULE_NAME "simgrid.task"
+#define HOST_MODULE_NAME "simgrid.host"
// Surf (bypass XML)
-#define LINK_MODULE_NAME "simgrid.Link"
-#define ROUTE_MODULE_NAME "simgrid.Route"
-#define AS_MODULE_NAME "simgrid.AS"
-#define TRACE_MODULE_NAME "simgrid.Trace"
+#define LINK_MODULE_NAME "simgrid.link"
+#define ROUTE_MODULE_NAME "simgrid.route"
+#define PLATF_MODULE_NAME "simgrid.platf"
static lua_State* sglua_maestro_state;
+int luaopen_simgrid(lua_State *L);
static void register_c_functions(lua_State *L);
+static int run_lua_code(int argc, char **argv);
-/**
- * \brief Like luaL_checkudata, with additional debug logs.
- * \param L a lua state
- * \param ud index of the userdata to check in the stack
- * \param tname key of the metatable of this userdata in the registry
- */
-static void* my_checkudata(lua_State* L, int ud, const char* tname) {
-
- XBT_DEBUG("Checking the userdata: ud = %d", ud);
- sglua_stack_dump("my_checkudata: ", L);
- void* p = lua_touserdata(L, ud);
- lua_getfield(L, LUA_REGISTRYINDEX, tname);
- const void* correct_mt = lua_topointer(L, -1);
-
- int has_mt = lua_getmetatable(L, ud);
- XBT_DEBUG("Checking the userdata: has metatable ? %d", has_mt);
- const void* actual_mt = NULL;
- if (has_mt) {
- actual_mt = lua_topointer(L, -1);
- lua_pop(L, 1);
- }
- XBT_DEBUG("Checking the task's metatable: expected %p, found %p", correct_mt, actual_mt);
- sglua_stack_dump("my_checkudata: ", L);
-
- if (p == NULL || !lua_getmetatable(L, ud) || !lua_rawequal(L, -1, -2))
- luaL_typerror(L, ud, tname);
- lua_pop(L, 2);
- return p;
-}
+/* ********************************************************************************* */
+/* simgrid.task API */
+/* ********************************************************************************* */
/**
- * @brief Ensures that a value is a valid task and returns it.
- * @param L a Lua state
- * @param index an index in the Lua stack
- * @return the task at this index
+ * \brief Ensures that a value in the stack is a valid task and returns it.
+ * \param L a Lua state
+ * \param index an index in the Lua stack
+ * \return the C task corresponding to this Lua task
*/
-static m_task_t checkTask(lua_State* L, int index)
+static m_task_t sglua_checktask(lua_State* L, int index)
{
- sglua_stack_dump("checkTask: ", L);
+ sglua_stack_dump("check task: ", L);
luaL_checktype(L, index, LUA_TTABLE);
/* ... task ... */
lua_getfield(L, index, "__simgrid_task");
return task;
}
-/* ********************************************************************************* */
-/* wrapper functions */
-/* ********************************************************************************* */
-
/**
* \brief Creates a new task and leaves it onto the stack.
+ * \param L a Lua state
+ * \return number of values returned to Lua
*
- * Lua arguments:
- * - task name (string)
- * - computation size (integer)
- * - communication size (integer)
+ * - Argument 1 (string): name of the task
+ * - Argument 2 (number): computation size
+ * - Argument 3 (number): communication size
+ * - Return value (task): the task created
*/
-static int Task_new(lua_State* L)
+static int l_task_new(lua_State* L)
{
XBT_DEBUG("Task new");
const char* name = luaL_checkstring(L, 1);
return 1;
}
-static int Task_get_name(lua_State* L)
+/**
+ * \brief Returns the name of a task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (task): a task
+ * - Return value (string): name of the task
+ */
+static int l_task_get_name(lua_State* L)
{
- m_task_t task = checkTask(L, 1);
+ m_task_t task = sglua_checktask(L, 1);
lua_pushstring(L, MSG_task_get_name(task));
return 1;
}
-static int Task_computation_duration(lua_State* L)
+/**
+ * \brief Returns the computation duration of a task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (task): a task
+ * - Return value (number): computation duration of this task
+ */
+static int l_task_computation_duration(lua_State* L)
{
- m_task_t task = checkTask(L, 1);
+ m_task_t task = sglua_checktask(L, 1);
lua_pushnumber(L, MSG_task_get_compute_duration(task));
return 1;
}
-static int Task_execute(lua_State* L)
+/**
+ * \brief Executes a task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (task): the task to execute
+ * - Return value (number): error code
+ */
+static int l_task_execute(lua_State* L)
{
- m_task_t task = checkTask(L, 1);
+ m_task_t task = sglua_checktask(L, 1);
int res = MSG_task_execute(task);
lua_pushnumber(L, res);
return 1;
}
-static int Task_send(lua_State* L)
+/**
+ * \brief Sends a task to a mailbox and waits for its completion.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (task): the task to send
+ * - Argument 2 (string): mailbox
+ */
+static int l_task_send(lua_State* L)
{
- m_task_t task = checkTask(L, 1);
+ m_task_t task = sglua_checktask(L, 1);
const char* mailbox = luaL_checkstring(L, 2);
/* task mailbox */
lua_settop(L, 1);
return 0;
}
-static int Task_recv_with_timeout(lua_State *L)
+/**
+ * \brief Receives a task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): mailbox
+ * - Argument 2 (number, optional): timeout (default is no timeout)
+ * - Return value (task/nil): the task received or nil if the communication
+ * has failed
+ */
+static int l_task_recv(lua_State *L)
{
m_task_t task = NULL;
const char* mailbox = luaL_checkstring(L, 1);
- int timeout = luaL_checknumber(L, 2);
+ int timeout;
+ if (lua_gettop(L) >= 2) {
/* mailbox timeout */
+ timeout = luaL_checknumber(L, 2);
+ }
+ else {
+ /* mailbox */
+ timeout = -1;
+ /* no timeout by default */
+ }
lua_settop(L, 0);
/* -- */
MSG_error_t res = MSG_task_receive_with_timeout(&task, mailbox, timeout);
return 1;
}
-static int Task_recv(lua_State * L)
-{
- lua_pushnumber(L, -1.0);
- return Task_recv_with_timeout(L);
-}
-
-static const luaL_reg Task_methods[] = {
- {"new", Task_new},
- {"name", Task_get_name},
- {"computation_duration", Task_computation_duration},
- {"execute", Task_execute},
- {"send", Task_send},
- {"recv", Task_recv},
- {"recv_timeout", Task_recv_with_timeout},
+static const luaL_reg task_functions[] = {
+ {"new", l_task_new},
+ {"name", l_task_get_name},
+ {"computation_duration", l_task_computation_duration},
+ {"execute", l_task_execute},
+ {"send", l_task_send},
+ {"recv", l_task_recv},
{NULL, NULL}
};
-static int Task_gc(lua_State* L)
+/**
+ * \brief Finalizes the userdata of a task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (userdata): a C task, possibly NULL if it was sent to another
+ * Lua state
+ */
+static int l_task_gc(lua_State* L)
{
/* ctask */
m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
return 0;
}
-static int Task_tostring(lua_State* L)
+/**
+ * \brief Returns a string representation of a C task.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (userdata): a task
+ * - Return value (string): a string describing this task
+ */
+static int l_task_tostring(lua_State* L)
{
- m_task_t task = checkTask(L, 1);
+ m_task_t task = *((m_task_t*) luaL_checkudata(L, 1, TASK_MODULE_NAME));
lua_pushfstring(L, "Task: %p", task);
return 1;
}
-static const luaL_reg Task_meta[] = {
- {"__gc", Task_gc},
- {"__tostring", Task_tostring},
+static const luaL_reg task_meta[] = {
+ {"__gc", l_task_gc},
+ {"__tostring", l_task_tostring},
{NULL, NULL}
};
+/* ********************************************************************************* */
+/* simgrid.host API */
+/* ********************************************************************************* */
+
/**
- * Host
+ * \brief Ensures that a value in the stack is a host and returns it.
+ * \param L a Lua state
+ * \param index an index in the Lua stack
+ * \return the C host corresponding to this Lua host
*/
-static m_host_t checkHost(lua_State * L, int index)
+static m_host_t sglua_checkhost(lua_State * L, int index)
{
m_host_t *pi, ht;
luaL_checktype(L, index, LUA_TTABLE);
return ht;
}
-static int Host_get_by_name(lua_State * L)
+/**
+ * \brief Returns a host given its name.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): name of a host
+ * - Return value (host): the corresponding host
+ */
+static int l_host_get_by_name(lua_State * L)
{
const char *name = luaL_checkstring(L, 1);
XBT_DEBUG("Getting Host from name...");
return 1;
}
-static int Host_get_name(lua_State * L)
+/**
+ * \brief Returns the name of a host.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (host): a host
+ * - Return value (string): name of this host
+ */
+static int l_host_get_name(lua_State * L)
{
- m_host_t ht = checkHost(L, -1);
+ m_host_t ht = sglua_checkhost(L, 1);
lua_pushstring(L, MSG_host_get_name(ht));
return 1;
}
-static int Host_number(lua_State * L)
+/**
+ * \brief Returns the number of existing hosts.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Return value (number): number of hosts
+ */
+static int l_host_number(lua_State * L)
{
lua_pushnumber(L, MSG_get_host_number());
return 1;
}
-static int Host_at(lua_State * L)
+/**
+ * \brief Returns the host given its index.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (number): an index (1 is the first)
+ * - Return value (host): the host at this index
+ */
+static int l_host_at(lua_State * L)
{
int index = luaL_checkinteger(L, 1);
m_host_t host = MSG_get_host_table()[index - 1]; // lua indexing start by 1 (lua[1] <=> C[0])
lua_setmetatable(L, -2);
lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
return 1;
-
}
-static int Host_self(lua_State * L)
+/**
+ * \brief Returns the host where the current process is located.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Return value (host): the current host
+ */
+static int l_host_self(lua_State * L)
{
/* -- */
m_host_t host = MSG_host_self();
return 1;
}
-static int Host_get_property_value(lua_State * L)
+/**
+ * \brief Returns the value of a host property.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (host): a host
+ * - Argument 2 (string): name of the property to get
+ * - Return value (string): the value of this property
+ */
+static int l_host_get_property_value(lua_State * L)
{
- m_host_t ht = checkHost(L, -2);
- const char *prop = luaL_checkstring(L, -1);
+ m_host_t ht = sglua_checkhost(L, 1);
+ const char *prop = luaL_checkstring(L, 2);
lua_pushstring(L,MSG_host_get_property_value(ht,prop));
return 1;
}
-static int Host_sleep(lua_State *L)
+/**
+ * \brief Makes the current process sleep for a while.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (number): duration of the sleep
+ */
+static int l_host_sleep(lua_State *L)
{
- int time = luaL_checknumber(L, -1);
+ int time = luaL_checknumber(L, 1);
MSG_process_sleep(time);
- return 1;
+ return 0;
}
-static int Host_destroy(lua_State *L)
+/**
+ * \brief Destroys a host.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (host): the host to destroy
+ */
+static int l_host_destroy(lua_State *L)
{
- m_host_t ht = checkHost(L, -1);
+ m_host_t ht = sglua_checkhost(L, 1);
__MSG_host_destroy(ht);
+ return 0;
+}
+
+static const luaL_reg host_functions[] = {
+ {"get_by_name", l_host_get_by_name},
+ {"name", l_host_get_name},
+ {"number", l_host_number},
+ {"at", l_host_at},
+ {"self", l_host_self},
+ {"get_prop_value", l_host_get_property_value},
+ {"sleep", l_host_sleep},
+ {"destroy", l_host_destroy},
+ // Bypass XML Methods
+ {"set_function", console_set_function},
+ {"set_property", console_host_set_property},
+ {NULL, NULL}
+};
+
+/**
+ * \brief Returns a string representation of a host.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (userdata): a host
+ * - Return value (string): a string describing this host
+ */
+static int l_host_tostring(lua_State * L)
+{
+ lua_pushfstring(L, "Host :%p", lua_touserdata(L, 1));
return 1;
}
+static const luaL_reg host_meta[] = {
+ {"__tostring", l_host_tostring},
+ {0, 0}
+};
+
/* ********************************************************************************* */
/* lua_stub_generator functions */
/* ********************************************************************************* */
return 0;
}
-
static int gras_generate(lua_State * L)
{
const char *project_name = luaL_checkstring(L, 1);
return 0;
}
-/***********************************
- * Tracing
- **********************************/
-static int trace_start(lua_State *L)
-{
-#ifdef HAVE_TRACING
- TRACE_start();
-#endif
- return 1;
-}
-
-static int trace_category(lua_State * L)
-{
-#ifdef HAVE_TRACING
- TRACE_category(luaL_checkstring(L, 1));
-#endif
- return 1;
-}
-
-static int trace_set_task_category(lua_State *L)
-{
-#ifdef HAVE_TRACING
- TRACE_msg_set_task_category(checkTask(L, -2), luaL_checkstring(L, -1));
-#endif
- return 1;
-}
-
-static int trace_end(lua_State *L)
-{
-#ifdef HAVE_TRACING
- TRACE_end();
-#endif
- return 1;
-}
-
-// *********** Register Methods ******************************************* //
-
-/*
- * Host Methods
- */
-static const luaL_reg Host_methods[] = {
- {"getByName", Host_get_by_name},
- {"name", Host_get_name},
- {"number", Host_number},
- {"at", Host_at},
- {"self", Host_self},
- {"getPropValue", Host_get_property_value},
- {"sleep", Host_sleep},
- {"destroy", Host_destroy},
- // Bypass XML Methods
- {"setFunction", console_set_function},
- {"setProperty", console_host_set_property},
- {NULL, NULL}
-};
-
-static int Host_gc(lua_State * L)
-{
- m_host_t ht = checkHost(L, -1);
- if (ht)
- ht = NULL;
- return 0;
-}
-
-static int Host_tostring(lua_State * L)
-{
- lua_pushfstring(L, "Host :%p", lua_touserdata(L, 1));
- return 1;
-}
-
-static const luaL_reg Host_meta[] = {
- {"__gc", Host_gc},
- {"__tostring", Host_tostring},
- {0, 0}
-};
-
-/*
- * AS Methods
- */
-static const luaL_reg AS_methods[] = {
- {"new", console_add_AS},
- {"addHost", console_add_host},
- {"addLink", console_add_link},
- {"addRoute", console_add_route},
- {NULL, NULL}
-};
+/* ********************************************************************************* */
+/* simgrid.platf API */
+/* ********************************************************************************* */
-/**
- * Tracing Functions
- */
-static const luaL_reg Trace_methods[] = {
- {"start", trace_start},
- {"category", trace_category},
- {"setTaskCategory", trace_set_task_category},
- {"finish", trace_end},
- {NULL, NULL}
+static const luaL_reg platf_functions[] = {
+ {"open", console_open},
+ {"close", console_close},
+ {"AS_open", console_AS_open},
+ {"AS_close", console_AS_close},
+ {"host_new", console_add_host},
+ {"link_new", console_add_link},
+ {"router_new", console_add_router},
+ {"route_new", console_add_route},
+ {NULL, NULL}
};
-/*
- * Environment related
- */
+/* ********************************************************************************* */
+/* simgrid API */
+/* ********************************************************************************* */
/**
- * @brief Runs a Lua function as a new simulated process.
- * @param argc number of arguments of the function
- * @param argv name of the Lua function and array of its arguments
- * @return result of the function
+ * \brief Deploys your application.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): name of the deployment file to load
*/
-static int run_lua_code(int argc, char **argv)
-{
- XBT_DEBUG("Run lua code %s", argv[0]);
-
- lua_State *L = sglua_clone_maestro();
- int res = 1;
-
- /* start the function */
- lua_getglobal(L, argv[0]);
- xbt_assert(lua_isfunction(L, -1),
- "The lua function %s does not seem to exist", argv[0]);
-
- /* push arguments onto the stack */
- int i;
- for (i = 1; i < argc; i++)
- lua_pushstring(L, argv[i]);
-
- /* call the function */
- _XBT_GNUC_UNUSED int err;
- err = lua_pcall(L, argc - 1, 1, 0);
- xbt_assert(err == 0, "error running function `%s': %s", argv[0],
- lua_tostring(L, -1));
-
- /* retrieve result */
- if (lua_isnumber(L, -1)) {
- res = lua_tonumber(L, -1);
- lua_pop(L, 1); /* pop returned value */
- }
-
- XBT_DEBUG("Execution of Lua code %s is over", (argv ? argv[0] : "(null)"));
-
- return res;
-}
-
static int launch_application(lua_State * L)
{
const char *file = luaL_checkstring(L, 1);
return 0;
}
+/**
+ * \brief Creates the platform.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): name of the platform file to load
+ */
static int create_environment(lua_State * L)
{
const char *file = luaL_checkstring(L, 1);
return 0;
}
+/**
+ * \brief Prints a log string with debug level.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): the text to print
+ */
static int debug(lua_State * L)
{
const char *str = luaL_checkstring(L, 1);
return 0;
}
+/**
+ * \brief Prints a log string with info level.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (string): the text to print
+ */
static int info(lua_State * L)
{
const char *str = luaL_checkstring(L, 1);
return 0;
}
+/**
+ * \brief Runs your application.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ */
static int run(lua_State * L)
{
MSG_main();
return 0;
}
+/**
+ * \brief Cleans the simulation.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ */
static int clean(lua_State * L)
{
MSG_clean();
return 0;
}
-/*
- * Bypass XML Parser (lua console)
- */
-
/*
* Register platform for MSG
*/
static int msg_register_platform(lua_State * L)
{
/* Tell Simgrid we dont wanna use its parser */
- surf_parse = console_parse_platform;
+ //surf_parse = console_parse_platform;
surf_parse_reset_callbacks();
MSG_create_environment(NULL);
return 0;
static int sd_register_platform(lua_State * L)
{
- surf_parse = console_parse_platform_wsL07;
+ //surf_parse = console_parse_platform_wsL07;
surf_parse_reset_callbacks();
SD_create_environment(NULL);
return 0;
*/
static int gras_register_platform(lua_State * L)
{
- /* Tell Simgrid we dont wanna use surf parser */
- surf_parse = console_parse_platform;
+ //surf_parse = console_parse_platform;
surf_parse_reset_callbacks();
gras_create_environment(NULL);
return 0;
static int msg_register_application(lua_State * L)
{
MSG_function_register_default(run_lua_code);
- surf_parse = console_parse_application;
+ //surf_parse = console_parse_application;
MSG_launch_application(NULL);
return 0;
}
static int gras_register_application(lua_State * L)
{
gras_function_register_default(run_lua_code);
- surf_parse = console_parse_application;
+ //surf_parse = console_parse_application;
gras_launch_application(NULL);
return 0;
}
-static const luaL_Reg simgrid_funcs[] = {
+static const luaL_Reg simgrid_functions[] = {
{"create_environment", create_environment},
{"launch_application", launch_application},
{"debug", debug},
};
/* ********************************************************************************* */
-/* module management functions */
+/* module management functions */
/* ********************************************************************************* */
#define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
-int luaopen_simgrid(lua_State *L); // Fuck gcc: we don't need that prototype
-
/**
- * This function is called automatically by the Lua interpreter when some Lua code requires
- * the "simgrid" module.
- * @param L the Lua state
+ * \brief Opens the simgrid Lua module.
+ *
+ * This function is called automatically by the Lua interpreter when some
+ * Lua code requires the "simgrid" module.
+ *
+ * \param L the Lua state
*/
int luaopen_simgrid(lua_State *L)
{
}
/**
- * @brief Returns whether a Lua state is the maestro state.
- * @param L a Lua state
- * @return true if this is maestro
+ * \brief Returns whether a Lua state is the maestro state.
+ * \param L a Lua state
+ * \return true if this is maestro
*/
int sglua_is_maestro(lua_State* L) {
return L == sglua_maestro_state;
}
/**
- * @brief Returns the maestro state.
- * @return true the maestro Lua state
+ * \brief Returns the maestro state.
+ * \return the maestro Lua state
*/
lua_State* sglua_get_maestro(void) {
return sglua_maestro_state;
}
/**
- * Makes the appropriate Simgrid functions available to the Lua world.
- * @param L a Lua world
+ * \brief Registers the task functions into the table simgrid.task.
+ *
+ * Also initialize the metatable of the task userdata type.
+ *
+ * \param L a lua state
+ */
+static void register_task_functions(lua_State* L) {
+
+ /* create a table simgrid.task and fill it with task functions */
+ luaL_openlib(L, TASK_MODULE_NAME, task_functions, 0);
+ /* simgrid.task */
+
+ /* create the metatable for tasks, add it to the Lua registry */
+ luaL_newmetatable(L, TASK_MODULE_NAME);
+ /* simgrid.task mt */
+ /* fill the metatable */
+ luaL_openlib(L, NULL, task_meta, 0);
+ /* simgrid.task mt */
+ lua_pushvalue(L, -2);
+ /* simgrid.task mt simgrid.task */
+ /* metatable.__index = simgrid.task
+ * we put the task functions inside the task userdata itself:
+ * this allows to write task:method(args) for
+ * simgrid.task.method(task, args) */
+ // FIXME: in the current implementation, a Lua task is a table with a
+ // __simgrid_task field that contains the userdata, so the OO-style
+ // writing doesn't work
+ lua_setfield(L, -2, "__index");
+ /* simgrid.task mt */
+ lua_pushliteral(L, "__metatable");
+ /* simgrid.task mt "__metatable" */
+ lua_pushnumber(L, 0);
+ /* simgrid.task mt "__metatable" 0 */
+ /* protect the metatable from Lua code (by setting any value to __metatable) */
+ lua_rawset(L, -3); /* simgrid.task mt */
+ lua_pop(L, 2);
+ /* -- */
+}
+
+/**
+ * \brief Registers the host functions into the table simgrid.host.
+ *
+ * Also initialize the metatable of the host userdata type.
+ *
+ * \param L a lua state
*/
-void register_c_functions(lua_State *L) {
+static void register_host_functions(lua_State* L) {
- /* register the core C functions to lua */
- luaL_register(L, "simgrid", simgrid_funcs);
-
- /* register the task methods to lua */
- luaL_openlib(L, TASK_MODULE_NAME, Task_methods, 0); // create methods table, add it to the globals
- luaL_newmetatable(L, TASK_MODULE_NAME); // create metatable for Task, add it to the Lua registry
- luaL_openlib(L, 0, Task_meta, 0); // fill metatable
- lua_pushliteral(L, "__index");
- lua_pushvalue(L, -3); // dup methods table
- lua_rawset(L, -3); // matatable.__index = methods
- lua_pushliteral(L, "__metatable");
- lua_pushvalue(L, -3); // dup methods table
- lua_rawset(L, -3); // hide metatable:metatable.__metatable = methods
- lua_pop(L, 1); // drop metatable
+ /* create a table simgrid.host and fill it with host functions */
+ luaL_openlib(L, HOST_MODULE_NAME, host_functions, 0);
+ /* simgrid.host */
- /* register the hosts methods to lua */
- luaL_openlib(L, HOST_MODULE_NAME, Host_methods, 0);
+ /* create the metatable for host, add it to the Lua registry */
luaL_newmetatable(L, HOST_MODULE_NAME);
- luaL_openlib(L, 0, Host_meta, 0);
- lua_pushliteral(L, "__index");
- lua_pushvalue(L, -3);
- lua_rawset(L, -3);
+ /* simgrid.host mt */
+ /* fill the metatable */
+ luaL_openlib(L, NULL, host_meta, 0);
+ /* simgrid.host mt */
+ lua_pushvalue(L, -2);
+ /* simgrid.host mt simgrid.host */
+ /* metatable.__index = simgrid.host
+ * we put the host functions inside the host userdata itself:
+ * this allows to write host(args) for
+ * simgrid.host.method(host, args) */
+ // FIXME: cannot work currently, same problem as tasks
+ lua_setfield(L, -2, "__index");
+ /* simgrid.host mt */
lua_pushliteral(L, "__metatable");
- lua_pushvalue(L, -3);
- lua_rawset(L, -3);
- lua_pop(L, 1);
+ /* simgrid.host mt "__metatable" */
+ lua_pushnumber(L, 0);
+ /* simgrid.host mt "__metatable" 0 */
+ /* protect the metatable from Lua code (by setting any value to __metatable) */
+ lua_rawset(L, -3); /* simgrid.host mt */
+ lua_pop(L, 2);
+ /* -- */
+}
+
+/**
+ * \brief Registers the platform functions into the table simgrid.platf.
+ * \param L a lua state
+ */
+static void register_platf_functions(lua_State* L) {
- /* register the links methods to lua */
- luaL_openlib(L, AS_MODULE_NAME, AS_methods, 0);
- luaL_newmetatable(L, AS_MODULE_NAME);
+ luaL_openlib(L, PLATF_MODULE_NAME, platf_functions, 0);
+ /* simgrid.platf */
lua_pop(L, 1);
+}
- /* register the Tracing functions to lua */
- luaL_openlib(L, TRACE_MODULE_NAME, Trace_methods, 0);
- luaL_newmetatable(L, TRACE_MODULE_NAME);
+/**
+ * \brief Makes the Simgrid functions available to the Lua world.
+ * \param L a Lua world
+ */
+static void register_c_functions(lua_State *L) {
+
+ /* register the core C functions to lua */
+ luaL_register(L, "simgrid", simgrid_functions);
+ /* simgrid */
lua_pop(L, 1);
+ /* -- */
+ register_task_functions(L);
+ register_host_functions(L);
+ register_platf_functions(L);
+}
+
+/**
+ * \brief Runs a Lua function as a new simulated process.
+ * \param argc number of arguments of the function
+ * \param argv name of the Lua function and array of its arguments
+ * \return result of the function
+ */
+static int run_lua_code(int argc, char **argv)
+{
+ XBT_DEBUG("Run lua code %s", argv[0]);
+
+ /* create a new state, getting globals from maestro */
+ lua_State *L = sglua_clone_maestro();
+ int res = 1;
+
+ /* start the function */
+ lua_getglobal(L, argv[0]);
+ xbt_assert(lua_isfunction(L, -1),
+ "There is no Lua function with name `%s'", argv[0]);
+
+ /* push arguments onto the stack */
+ int i;
+ for (i = 1; i < argc; i++)
+ lua_pushstring(L, argv[i]);
+
+ /* call the function */
+ _XBT_GNUC_UNUSED int err;
+ err = lua_pcall(L, argc - 1, 1, 0);
+ xbt_assert(err == 0, "Error running function `%s': %s", argv[0],
+ lua_tostring(L, -1));
+
+ /* retrieve result */
+ if (lua_isnumber(L, -1)) {
+ res = lua_tonumber(L, -1);
+ lua_pop(L, 1); /* pop returned value */
+ }
+
+ XBT_DEBUG("Execution of Lua code %s is over", (argv ? argv[0] : "(null)"));
+
+ return res;
}
