/* SimGrid Lua bindings */
-/* Copyright (c) 2010, the SimGrid team. All right reserved. */
+/* Copyright (c) 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
+#include "simgrid_lua.h"
+#include <string.h> // memcpy
-#include <stdio.h>
-#include <lauxlib.h>
-#include <lualib.h>
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua, bindings, "Lua Bindings");
-#include "msg/msg.h"
-#include "xbt.h"
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
+static lua_State *lua_maestro_state;
#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"
+
+/**
+ * @brief A chunk of memory.
+ *
+ * TODO replace this by a dynar
+ */
+typedef struct s_buffer {
+ char* data;
+ size_t size;
+ size_t capacity;
+} s_buffer_t, *buffer_t;
+
+static const char* value_tostring(lua_State* L, int index);
+static const char* keyvalue_tostring(lua_State* L, int key_index, int value_index);
+static void stack_dump(const char *msg, lua_State* L);
+static int writer(lua_State* L, const void* source, size_t size, void* userdata);
+static void move_value(lua_State* dst, lua_State* src, const char* name);
+static int l_get_from_father(lua_State* L);
+static lua_State *clone_lua_state(lua_State* L);
+static m_task_t check_task(lua_State *L, int index);
+static void register_c_functions(lua_State *L);
/* ********************************************************************************* */
/* helper functions */
/* ********************************************************************************* */
-static void stackDump (lua_State *L) {
- char buff[2048];
- char *p=buff;
- int i;
- int top = lua_gettop(L);
- void *ptr;
- fflush(stdout);
- p+=sprintf(p,"STACK(top=%d): ",top);
- for (i = 1; i <= top; i++) { /* repeat for each level */
- int t = lua_type(L, i);
- switch (t) {
-
- case LUA_TSTRING: /* strings */
- p+=sprintf(p,"`%s'", lua_tostring(L, i));
+/**
+ * @brief Returns a string representation of a value in the Lua stack.
+ *
+ * This function is for debugging purposes.
+ * It always returns the same pointer.
+ *
+ * @param L the Lua state
+ * @param index index in the stack
+ * @return a string representation of the value at this index
+ */
+static const char* value_tostring(lua_State* L, int index) {
+
+ static char buff[64];
+
+ switch (lua_type(L, index)) {
+
+ case LUA_TNIL:
+ sprintf(buff, "nil");
break;
- case LUA_TBOOLEAN: /* booleans */
- p+=sprintf(p,lua_toboolean(L, i) ? "true" : "false");
+ case LUA_TNUMBER:
+ sprintf(buff, "%.3f", lua_tonumber(L, index));
break;
- case LUA_TNUMBER: /* numbers */
- p+=sprintf(p,"%g", lua_tonumber(L, i));
+ case LUA_TBOOLEAN:
+ sprintf(buff, "%s", lua_toboolean(L, index) ? "true" : "false");
break;
- default: /* other values */
- if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
- p+=sprintf(p,"task");
- } else {
- p+=printf(p,"%s", lua_typename(L, t));
+ case LUA_TSTRING:
+ snprintf(buff, 63, "'%s'", lua_tostring(L, index));
+ break;
+
+ case LUA_TFUNCTION:
+ if (lua_iscfunction(L, index)) {
+ sprintf(buff, "C-function");
+ }
+ else {
+ sprintf(buff, "function");
}
break;
+ case LUA_TTABLE:
+ sprintf(buff, "table(%d)", lua_objlen(L, index));
+ break;
+
+ case LUA_TLIGHTUSERDATA:
+ case LUA_TUSERDATA:
+ sprintf(buff, "userdata(%p)", lua_touserdata(L, index));
+ break;
+
+ case LUA_TTHREAD:
+ sprintf(buff, "thread");
+ break;
+ }
+ return buff;
+}
+
+/**
+ * @brief Returns a string representation of a key-value pair.
+ *
+ * This function is for debugging purposes.
+ * It always returns the same pointer.
+ *
+ * @param L the Lua state
+ * @param key_index index of the key
+ * @param value_index index of the value
+ * @return a string representation of the key-value pair
+ */
+static const char* keyvalue_tostring(lua_State* L, int key_index, int value_index) {
+
+ static char buff[64];
+ /* value_tostring also always returns the same pointer */
+ int len = snprintf(buff, 63, "%s -> ", value_tostring(L, key_index));
+ snprintf(buff + len, 63 - len, "%s", value_tostring(L, value_index));
+ return buff;
+}
+
+/**
+ * @brief Dumps the Lua stack if debug logs are enabled.
+ * @param msg a message to print
+ * @param L a Lua state
+ */
+static void stack_dump(const char* msg, lua_State* L)
+{
+ if (XBT_LOG_ISENABLED(lua, xbt_log_priority_debug)) {
+ char buff[2048];
+ char* p = buff;
+ int i;
+ int top = lua_gettop(L);
+
+ // if (1) return;
+
+ fflush(stdout);
+
+ p[0] = '\0';
+ for (i = 1; i <= top; i++) { /* repeat for each level */
+
+ p += sprintf(p, "%s", value_tostring(L, i));
+ p += sprintf(p, " "); /* put a separator */
}
- p+=sprintf(p," "); /* put a separator */
+ XBT_DEBUG("%s%s", msg, buff);
}
- DEBUG1("%s",buff);
}
-/** @brief ensures that a userdata on the stack is a task and returns the pointer inside the userdata */
-static m_task_t checkTask (lua_State *L,int index) {
- m_task_t *pi,tk;
- luaL_checktype(L,index,LUA_TUSERDATA);
- pi = (m_task_t*)luaL_checkudata(L,index,TASK_MODULE_NAME);
- if(pi == NULL)
- luaL_typerror(L,index,TASK_MODULE_NAME);
- tk = *pi;
- if(!tk)
- luaL_error(L,"null Task");
- return tk;
+/**
+ * @brief Writes the specified data into a memory buffer.
+ *
+ * This function is a valid lua_Writer that writes into a memory buffer passed
+ * as userdata.
+ *
+ * @param L a lua state
+ * @param source some data
+ * @param sz number of bytes of data
+ * @param user_data the memory buffer to write
+ */
+static int writer(lua_State* L, const void* source, size_t size, void* userdata) {
+
+ buffer_t buffer = (buffer_t) userdata;
+ while (buffer->capacity < buffer->size + size) {
+ buffer->capacity *= 2;
+ buffer->data = xbt_realloc(buffer->data, buffer->capacity);
+ }
+ memcpy(buffer->data + buffer->size, source, size);
+ buffer->size += size;
+
+ return 0;
}
-/** @brief leaves a new userdata on top of the stack, sets its metatable, and sets the Task pointer inside the userdata */
-static m_task_t *pushTask (lua_State *L,m_task_t tk,int flag) {
+/**
+ * @brief Pops a value from the stack of a source state and pushes it on the
+ * stack of another state.
+ *
+ * If the value is a table, its content is copied recursively. To avoid cycles,
+ * a table of previsously visited tables must be present at index 1 of dst.
+ * Its keys are pointers to visited tables in src and its values are the tables
+ * already built.
+ *
+ * TODO: add support of upvalues
+ *
+ * @param src the source state
+ * @param dst the destination state
+ * @param name a name describing the value
+ */
+static void move_value(lua_State* dst, lua_State *src, const char* name) {
+
+ luaL_checkany(src, -1); /* check the value to copy */
+ luaL_checktype(dst, 1, LUA_TTABLE); /* check the presence of a table of
+ previously visited tables */
+
+ XBT_DEBUG("Copying value %s", name);
+
+ stack_dump("src before copying a value (should be ... value): ", src);
+ stack_dump("dst before copying a value (should be visited ...): ", dst);
+
+ switch (lua_type(src, -1)) {
+
+ case LUA_TNIL:
+ lua_pushnil(dst);
+ break;
+
+ case LUA_TNUMBER:
+ lua_pushnumber(dst, lua_tonumber(src, -1));
+ break;
+
+ case LUA_TBOOLEAN:
+ lua_pushboolean(dst, lua_toboolean(src, -1));
+ break;
+
+ case LUA_TSTRING:
+ /* no worries about memory: lua_pushstring makes a copy */
+ lua_pushstring(dst, lua_tostring(src, -1));
+ break;
+
+ case LUA_TFUNCTION:
+ /* it's a function that does not exist yet in L2 */
+
+ if (lua_iscfunction(src, -1)) {
+ /* it's a C function: just copy the pointer */
+ XBT_DEBUG("Copying C function '%s'", name);
+ lua_CFunction f = lua_tocfunction(src, -1);
+ lua_pushcfunction(dst, f);
+ }
+ else {
+ /* it's a Lua function: dump it from src */
+ XBT_DEBUG("Dumping Lua function '%s'", name);
+
+ s_buffer_t buffer;
+ buffer.capacity = 64;
+ buffer.size = 0;
+ buffer.data = xbt_new(char, buffer.capacity);
+
+ /* copy the binary chunk from src into a buffer */
+ int error = lua_dump(src, writer, &buffer);
+ xbt_assert(!error, "Failed to dump function '%s' from the source state: error %d",
+ name, error);
+
+ /* load the chunk into dst */
+ error = luaL_loadbuffer(dst, buffer.data, buffer.size, name);
+ xbt_assert(!error, "Failed to load function '%s' from the source state: %s",
+ name, lua_tostring(dst, -1));
+ XBT_DEBUG("Function '%s' successfully dumped from source state.", name);
+ }
+ break;
+
+ case LUA_TTABLE:
+
+ /* see if this table was already visited */
+ lua_pushlightuserdata(dst, (void*) lua_topointer(src, -1));
+ /* dst: visited ... psrctable */
+ lua_gettable(dst, 1);
+ /* dst: visited ... table/nil */
+ if (lua_istable(dst, -1)) {
+ XBT_DEBUG("Nothing to do: table already visited");
+ /* dst: visited ... table */
+ }
+ else {
+ XBT_DEBUG("First visit of this table");
+ /* dst: visited ... nil */
+ lua_pop(dst, 1);
+ /* dst: visited ... */
+
+ /* first visit: create the new table in dst */
+ lua_newtable(dst);
+ /* dst: visited ... table */
+
+ /* mark the table as visited to avoid infinite recursion */
+ lua_pushlightuserdata(dst, (void*) lua_topointer(src, -1));
+ /* dst: visited ... table psrctable */
+ lua_pushvalue(dst, -2);
+ /* dst: visited ... table psrctable table */
+ lua_settable(dst, 1);
+ /* dst: visited ... table */
+ XBT_DEBUG("Table marked as visited");
+
+ stack_dump("dst after marking the table as visited (should be visited ... table): ", dst);
+
+ /* copy the metatable if any */
+ int has_meta_table = lua_getmetatable(src, -1);
+ /* src: ... table mt? */
+ if (has_meta_table) {
+ XBT_DEBUG("Copying metatable");
+ /* src: ... table mt */
+ move_value(dst, src, "metatable");
+ /* src: ... table
+ dst: visited ... table mt */
+ lua_setmetatable(dst, -2);
+ /* dst: visited ... table */
+ }
+ else {
+ XBT_DEBUG("No metatable");
+ }
+
+ stack_dump("src before traversing the table (should be ... table): ", src);
+ stack_dump("dst before traversing the table (should be visited ... table): ", dst);
+
+ /* traverse the table of src and copy each element */
+ lua_pushnil(src);
+ /* src: ... table nil */
+ while (lua_next(src, -2) != 0) {
+ /* src: ... table key value */
- m_task_t *pi = NULL;
- if ( flag == 0)
- pi = (m_task_t*)MSG_task_get_data(tk);//(m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
- else if ( flag == 1)
- {
- pi = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
- *pi=tk;
+ XBT_DEBUG("Copying table element %s", keyvalue_tostring(src, -2, -1));
+ stack_dump("src before copying table element (should be ... table key value): ", src);
+ stack_dump("dst before copying table element (should be visited ... table): ", dst);
+
+ /* copy the key */
+ lua_pushvalue(src, -2);
+ /* src: ... table key value key */
+ XBT_DEBUG("Copying the element key");
+ move_value(dst, src, value_tostring(src, -1));
+ /* src: ... table key value
+ dst: visited ... table key */
+ XBT_DEBUG("Copied the element key");
+
+ /* copy the value */
+ XBT_DEBUG("Copying the element value");
+ move_value(dst, src, value_tostring(src, -1));
+ /* src: ... table key
+ dst: visited ... table key value */
+ XBT_DEBUG("Copied the element value");
+
+ /* set the table element */
+ lua_settable(dst, -3);
+ /* dst: visited ... table */
+
+ /* the key stays on top of src for next iteration */
+ stack_dump("src before next iteration (should be ... table key): ", src);
+ stack_dump("dst before next iteration (should be visited ... table): ", dst);
+ }
+ XBT_DEBUG("Finished traversing the table");
+ }
+ break;
+
+ case LUA_TLIGHTUSERDATA:
+ lua_pushlightuserdata(dst, lua_touserdata(src, -1));
+ break;
+
+ case LUA_TUSERDATA:
+ XBT_WARN("Cannot copy a full userdata from the source state.");
+ lua_pushnil(dst);
+ break;
+
+ case LUA_TTHREAD:
+ XBT_WARN("Cannot copy a thread from the source state.");
+ lua_pushnil(dst);
+ break;
}
- //*pi=tk;
- DEBUG1("push lua task with Name : %s \n",MSG_task_get_name(*pi));
- luaL_getmetatable(L,TASK_MODULE_NAME);
- lua_setmetatable(L,-2);
- return pi;
+ /* pop the value from src */
+ lua_pop(src, 1);
+
+ stack_dump("src after copying a value (should be ...): ", src);
+ stack_dump("dst after copying a value (should be visited ... value): ", dst);
+}
+
+/**
+ * @brief Copies a global value from the father state.
+ *
+ * The state L must have a father, i.e. it should have been created by
+ * clone_lua_state().
+ * This function is meant to be an __index metamethod.
+ * Consequently, it assumes that the stack has two elements:
+ * a table (usually the environment of L) and the string key of a value
+ * that does not exist yet in this table. It copies the corresponding global
+ * value from the father state and pushes it on the stack of L.
+ * If the global value does not exist in the father state either, nil is
+ * pushed.
+ *
+ * TODO: make this function thread safe. If the simulation runs in parallel,
+ * several simulated processes may trigger this __index metamethod at the same
+ * time and get globals from maestro.
+ *
+ * @param L the current state
+ * @return number of return values pushed (always 1)
+ */
+static int l_get_from_father(lua_State *L) {
+
+ /* retrieve the father */
+ lua_getfield(L, LUA_REGISTRYINDEX, "simgrid.father_state");
+ lua_State* father = lua_touserdata(L, -1);
+ xbt_assert(father != NULL, "This Lua state has no father");
+ lua_pop(L, 1);
+
+ /* get the global from the father */
+ const char* key = luaL_checkstring(L, 2); /* L: table key */
+ lua_getglobal(father, key); /* father: ... value */
+ XBT_DEBUG("__index of '%s' begins", key);
+
+ /* push the value onto the stack of L */
+ lua_newtable(L); /* L: table key visited */
+ lua_insert(L, 1); /* L: visited table key */
+ move_value(L, father, key); /* father: ...
+ L: visited table key value */
+ lua_remove(L, 1); /* L: table key value */
+
+ /* prepare the return value of __index */
+ lua_pushvalue(L, -1); /* L: table key value value */
+ lua_insert(L, 1); /* L: value table key value */
+
+ /* save the copied value in the table for subsequent accesses */
+ lua_settable(L, -3); /* L: value table */
+ lua_remove(L, 2); /* L: value */
+
+ XBT_DEBUG("__index of '%s' returns %s", key, value_tostring(L, -1));
+
+ return 1;
+}
+
+/**
+ * @brief Creates a new Lua state and get its environment from an existing state.
+ *
+ * The state created is independent from the existing one and has its own
+ * copies of global variables and functions.
+ * However, the global variables and functions are not copied right now from
+ * the original state; they are copied only the first time they are accessed.
+ * This behavior saves time and memory, and is okay for Simgrid's needs.
+ *
+ * @param father an existing state
+ * @return the state created
+ */
+static lua_State* clone_lua_state(lua_State *father) {
+
+ /* create the new state */
+ lua_State *L = luaL_newstate();
+
+ /* set its environment:
+ * - create a table newenv
+ * - create a metatable mt
+ * - set mt.__index = a function that copies the global from the father state
+ * - set mt as the metatable of newenv
+ * - set newenv as the environment of the new state
+ */
+ lua_pushthread(L); /* thread */
+ lua_newtable(L); /* thread newenv */
+ lua_newtable(L); /* thread newenv mt */
+ lua_pushcfunction(L, l_get_from_father); /* thread newenv mt f */
+ lua_setfield(L, -2, "__index"); /* thread newenv mt */
+ lua_setmetatable(L, -2); /* thread newenv */
+ lua_setfenv(L, -2); /* thread */
+ lua_pop(L, 1); /* -- */
+
+ /* open the standard libs (theoretically, this is not necessary) */
+ luaL_openlibs(L);
+
+ /* put a pointer to the father */
+ lua_pushlightuserdata(L, father);
+ lua_setfield(L, LUA_REGISTRYINDEX, "simgrid.father_state");
+
+ XBT_DEBUG("New state created");
+
+ return L;
+}
+/**
+ * @brief Ensures that a userdata on the stack is a task
+ * and returns the pointer inside the userdata.
+ * @param L a Lua state
+ * @param index an index in the Lua stack
+ * @return the task at this index
+ */
+static m_task_t checkTask(lua_State * L, int index)
+{
+ m_task_t *pi, tk;
+ luaL_checktype(L, index, LUA_TTABLE);
+ lua_getfield(L, index, "__simgrid_task");
+ pi = (m_task_t *) luaL_checkudata(L, -1, TASK_MODULE_NAME);
+ if (pi == NULL)
+ luaL_typerror(L, index, TASK_MODULE_NAME);
+ tk = *pi;
+ if (!tk)
+ luaL_error(L, "null Task");
+ lua_pop(L, 1);
+ return tk;
}
/* ********************************************************************************* */
/* wrapper functions */
/* ********************************************************************************* */
-static int Task_new(lua_State* L) {
- const char *name=luaL_checkstring(L,1);
- int comp_size = luaL_checkint(L,2);
- int msg_size = luaL_checkint(L,3);
- // FIXME: data shouldn't be NULL I guess
- //pushTask(L,MSG_task_create(name,comp_size,msg_size,NULL));
- m_task_t msg_task = MSG_task_create(name,comp_size,msg_size,NULL);
- m_task_t *lua_task = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
+/**
+ * A task is either something to compute somewhere, or something to exchange between two hosts (or both).
+ * It is defined by a computing amount and a message size.
+ *
+ */
+
+/* * * *
+ * * Constructors * *
+ * * * */
+
+/**
+ * @brief Constructs a new task with the specified processing amount and amount
+ * of data needed.
+ *
+ * @param name Task's name
+ *
+ * @param computeDuration A value of the processing amount (in flop) needed to process the task.
+ * If 0, then it cannot be executed with the execute() method.
+ * This value has to be >= 0.
+ *
+ * @param messageSize A value of amount of data (in bytes) needed to transfert this task.
+ * If 0, then it cannot be transfered with the get() and put() methods.
+ * This value has to be >= 0.
+ */
+static int Task_new(lua_State * L)
+{
+ XBT_DEBUG("Task new...");
+ const char *name = luaL_checkstring(L, 1);
+ int comp_size = luaL_checkint(L, 2);
+ int msg_size = luaL_checkint(L, 3);
+ m_task_t msg_task = MSG_task_create(name, comp_size, msg_size, NULL);
+ lua_newtable(L); /* create a table, put the userdata on top of it */
+ m_task_t *lua_task = (m_task_t *) lua_newuserdata(L, sizeof(m_task_t));
*lua_task = msg_task;
- MSG_task_set_data(msg_task,lua_task);
- pushTask(L,msg_task,0);
- INFO0("Created task");
+ luaL_getmetatable(L, TASK_MODULE_NAME);
+ lua_setmetatable(L, -2);
+ lua_setfield(L, -2, "__simgrid_task"); /* put the userdata as field of the table */
+ /* remove the args from the stack */
+ lua_remove(L, 1);
+ lua_remove(L, 1);
+ lua_remove(L, 1);
return 1;
}
-static int Task_get_name(lua_State *L) {
- m_task_t tk = checkTask(L,1);
- lua_pushstring(L,MSG_task_get_name(tk));
+static int Task_get_name(lua_State * L)
+{
+ m_task_t tk = checkTask(L, -1);
+ lua_pushstring(L, MSG_task_get_name(tk));
return 1;
}
-static int Task_computation_duration(lua_State *L){
- m_task_t tk = checkTask(L,1);
- lua_pushnumber(L,MSG_task_get_compute_duration (tk));
+static int Task_computation_duration(lua_State * L)
+{
+ m_task_t tk = checkTask(L, -1);
+ lua_pushnumber(L, MSG_task_get_compute_duration(tk));
return 1;
}
-static int Task_execute(lua_State *L){
- m_task_t tk = checkTask(L,1);
+static int Task_execute(lua_State * L)
+{
+ m_task_t tk = checkTask(L, -1);
int res = MSG_task_execute(tk);
- lua_pushnumber(L,res);
+ lua_pushnumber(L, res);
return 1;
}
-static int Task_destroy(lua_State *L) {
- m_task_t tk = checkTask(L,1);
+static int Task_destroy(lua_State * L)
+{
+ m_task_t tk = checkTask(L, -1);
int res = MSG_task_destroy(tk);
- lua_pushnumber(L,res);
+ lua_pushnumber(L, res);
return 1;
}
-static int Task_send(lua_State *L) {
- m_task_t tk = checkTask(L,1);
- const char *mailbox = luaL_checkstring(L,2);
- MSG_error_t res = MSG_task_send(tk,mailbox);
- if(res != MSG_OK)
- {
- switch(res){
- case MSG_TIMEOUT :
- ERROR0("MSG_task_send failed : Timeout");
- break;
- case MSG_TRANSFER_FAILURE :
- ERROR0("MSG_task_send failed : Transfer Failure");
- break;
- case MSG_HOST_FAILURE :
- ERROR0("MSG_task_send failed : Host Failure ");
- break;
- default :
- ERROR0("MSG_task_send failed : Unexpected error , please report this bug");
- break;
- }
+
+static int Task_send(lua_State * L)
+{
+ //stackDump("send ",L);
+ m_task_t tk = checkTask(L, 1);
+ const char *mailbox = luaL_checkstring(L, 2);
+ lua_pop(L, 1); // remove the string so that the task is on top of it
+ MSG_task_set_data(tk, L); // Copy my stack into the task, so that the receiver can copy the lua task directly
+ MSG_error_t res = MSG_task_send(tk, mailbox);
+ while (MSG_task_get_data(tk) != NULL) // Don't mess up with my stack: the receiver didn't copy the data yet
+ MSG_process_sleep(0); // yield
+
+ if (res != MSG_OK)
+ switch (res) {
+ case MSG_TIMEOUT:
+ XBT_DEBUG("MSG_task_send failed : Timeout");
+ break;
+ case MSG_TRANSFER_FAILURE:
+ XBT_DEBUG("MSG_task_send failed : Transfer Failure");
+ break;
+ case MSG_HOST_FAILURE:
+ XBT_DEBUG("MSG_task_send failed : Host Failure ");
+ break;
+ default:
+ XBT_ERROR
+ ("MSG_task_send failed : Unexpected error , please report this bug");
+ break;
}
return 0;
}
-static int Task_recv(lua_State *L) {
+
+static int Task_recv_with_timeout(lua_State *L)
+{
m_task_t tk = NULL;
- const char *mailbox = luaL_checkstring(L,1);
- MSG_error_t res = MSG_task_receive(&tk,mailbox);
- if (MSG_task_has_data(tk)) DEBUG1("Receive The Task with Name : %s \n",MSG_task_get_name(tk));
- MSG_task_ref(tk); //FIXME: kill it once a ctask cannot be in more than one luatask anymore
- if(res != MSG_OK)
- {
- switch(res){
- case MSG_TIMEOUT :
- ERROR0("MSG_task_receive failed : Timeout");
- break;
- case MSG_TRANSFER_FAILURE :
- ERROR0("MSG_task_receive failed : Transfer Failure");
- break;
- case MSG_HOST_FAILURE :
- ERROR0("MSG_task_receive failed : Host Failure ");
- break;
- default :
- ERROR0("MSG_task_receive failed : Unexpected error , please report this bug");
- break;
- }
+ const char *mailbox = luaL_checkstring(L, -2);
+ int timeout = luaL_checknumber(L, -1);
+ MSG_error_t res = MSG_task_receive_with_timeout(&tk, mailbox, timeout);
+
+ if (res == MSG_OK) {
+ lua_State *sender_stack = MSG_task_get_data(tk);
+ lua_xmove(sender_stack, L, 1); // copy the data directly from sender's stack
+ MSG_task_set_data(tk, NULL);
+ }
+ else {
+ switch (res) {
+ case MSG_TIMEOUT:
+ XBT_DEBUG("MSG_task_receive failed : Timeout");
+ break;
+ case MSG_TRANSFER_FAILURE:
+ XBT_DEBUG("MSG_task_receive failed : Transfer Failure");
+ break;
+ case MSG_HOST_FAILURE:
+ XBT_DEBUG("MSG_task_receive failed : Host Failure ");
+ break;
+ default:
+ XBT_ERROR("MSG_task_receive failed : Unexpected error , please report this bug");
+ break;
+ }
+ lua_pushnil(L);
}
- DEBUG1("Task Name : >>>%s",MSG_task_get_name(tk));
- //lua_pushlightuserdata(L,MSG_task_get_data(tk));
- pushTask(L,tk,1);
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},
- {"destroy", Task_destroy},
- {"send", Task_send},
- {"recv", Task_recv},
- {0,0}
+ {"new", Task_new},
+ {"name", Task_get_name},
+ {"computation_duration", Task_computation_duration},
+ {"execute", Task_execute},
+ {"destroy", Task_destroy},
+ {"send", Task_send},
+ {"recv", Task_recv},
+ {"recv_timeout", Task_recv_with_timeout},
+ {NULL, NULL}
};
-static int Task_gc(lua_State *L) {
- m_task_t tk=checkTask(L,1);
- if (tk) MSG_task_destroy(tk);
- //printf("GoodBye Task(%p)\n",lua_touserdata(L,1));
+
+static int Task_gc(lua_State * L)
+{
+ m_task_t tk = checkTask(L, -1);
+ if (tk)
+ MSG_task_destroy(tk);
return 0;
}
-static int Task_tostring(lua_State *L) {
- lua_pushfstring(L, "Task :%p",lua_touserdata(L,1));
+static int Task_tostring(lua_State * L)
+{
+ lua_pushfstring(L, "Task :%p", lua_touserdata(L, 1));
return 1;
}
-
static const luaL_reg Task_meta[] = {
- {"__gc", Task_gc},
- {"__tostring", Task_tostring},
- {0,0}
+ {"__gc", Task_gc},
+ {"__tostring", Task_tostring},
+ {NULL, NULL}
+};
+
+/**
+ * Host
+ */
+static m_host_t checkHost(lua_State * L, int index)
+{
+ m_host_t *pi, ht;
+ luaL_checktype(L, index, LUA_TTABLE);
+ lua_getfield(L, index, "__simgrid_host");
+ pi = (m_host_t *) luaL_checkudata(L, -1, HOST_MODULE_NAME);
+ if (pi == NULL)
+ luaL_typerror(L, index, HOST_MODULE_NAME);
+ ht = *pi;
+ if (!ht)
+ luaL_error(L, "null Host");
+ lua_pop(L, 1);
+ return ht;
+}
+
+static int Host_get_by_name(lua_State * L)
+{
+ const char *name = luaL_checkstring(L, 1);
+ XBT_DEBUG("Getting Host from name...");
+ m_host_t msg_host = MSG_get_host_by_name(name);
+ if (!msg_host) {
+ luaL_error(L, "null Host : MSG_get_host_by_name failed");
+ }
+ lua_newtable(L); /* create a table, put the userdata on top of it */
+ m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
+ *lua_host = msg_host;
+ luaL_getmetatable(L, HOST_MODULE_NAME);
+ lua_setmetatable(L, -2);
+ lua_setfield(L, -2, "__simgrid_host"); /* put the userdata as field of the table */
+ /* remove the args from the stack */
+ lua_remove(L, 1);
+ return 1;
+}
+
+static int Host_get_name(lua_State * L)
+{
+ m_host_t ht = checkHost(L, -1);
+ lua_pushstring(L, MSG_host_get_name(ht));
+ return 1;
+}
+
+static int Host_number(lua_State * L)
+{
+ lua_pushnumber(L, MSG_get_host_number());
+ return 1;
+}
+
+static int 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_newtable(L); /* create a table, put the userdata on top of it */
+ m_host_t *lua_host = (m_host_t *) lua_newuserdata(L, sizeof(m_host_t));
+ *lua_host = host;
+ luaL_getmetatable(L, HOST_MODULE_NAME);
+ 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)
+{
+ m_host_t host = MSG_host_self();
+ lua_newtable(L);
+ m_host_t *lua_host =(m_host_t *)lua_newuserdata(L,sizeof(m_host_t));
+ *lua_host = host;
+ luaL_getmetatable(L, HOST_MODULE_NAME);
+ lua_setmetatable(L, -2);
+ lua_setfield(L, -2, "__simgrid_host");
+ return 1;
+}
+
+static int Host_get_property_value(lua_State * L)
+{
+ m_host_t ht = checkHost(L, -2);
+ const char *prop = luaL_checkstring(L, -1);
+ lua_pushstring(L,MSG_host_get_property_value(ht,prop));
+ return 1;
+}
+
+static int Host_sleep(lua_State *L)
+{
+ int time = luaL_checknumber(L, -1);
+ MSG_process_sleep(time);
+ return 1;
+}
+
+static int Host_destroy(lua_State *L)
+{
+ m_host_t ht = checkHost(L, -1);
+ __MSG_host_destroy(ht);
+ return 1;
+}
+
+/* ********************************************************************************* */
+/* lua_stub_generator functions */
+/* ********************************************************************************* */
+
+xbt_dict_t process_function_set;
+xbt_dynar_t process_list;
+xbt_dict_t machine_set;
+static s_process_t process;
+
+void s_process_free(void *process)
+{
+ s_process_t *p = (s_process_t *) process;
+ int i;
+ for (i = 0; i < p->argc; i++)
+ free(p->argv[i]);
+ free(p->argv);
+ free(p->host);
+}
+
+static int gras_add_process_function(lua_State * L)
+{
+ const char *arg;
+ const char *process_host = luaL_checkstring(L, 1);
+ const char *process_function = luaL_checkstring(L, 2);
+
+ if (xbt_dict_is_empty(machine_set)
+ || xbt_dict_is_empty(process_function_set)
+ || xbt_dynar_is_empty(process_list)) {
+ process_function_set = xbt_dict_new();
+ process_list = xbt_dynar_new(sizeof(s_process_t), s_process_free);
+ machine_set = xbt_dict_new();
+ }
+
+ xbt_dict_set(machine_set, process_host, NULL, NULL);
+ xbt_dict_set(process_function_set, process_function, NULL, NULL);
+
+ process.argc = 1;
+ process.argv = xbt_new(char *, 1);
+ process.argv[0] = xbt_strdup(process_function);
+ process.host = strdup(process_host);
+
+ lua_pushnil(L);
+ while (lua_next(L, 3) != 0) {
+ arg = lua_tostring(L, -1);
+ process.argc++;
+ process.argv =
+ xbt_realloc(process.argv, (process.argc) * sizeof(char *));
+ process.argv[(process.argc) - 1] = xbt_strdup(arg);
+
+ XBT_DEBUG("index = %f , arg = %s \n", lua_tonumber(L, -2),
+ lua_tostring(L, -1));
+ lua_pop(L, 1);
+ }
+ lua_pop(L, 1);
+ //add to the process list
+ xbt_dynar_push(process_list, &process);
+ return 0;
+}
+
+
+static int gras_generate(lua_State * L)
+{
+ const char *project_name = luaL_checkstring(L, 1);
+ generate_sim(project_name);
+ generate_rl(project_name);
+ generate_makefile_local(project_name);
+ 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}
+};
+
+/**
+ * Tracing Functions
+ */
+static const luaL_reg Trace_methods[] = {
+ {"start", trace_start},
+ {"category", trace_category},
+ {"setTaskCategory", trace_set_task_category},
+ {"finish", trace_end},
+ {NULL, NULL}
};
/*
* Environment related
*/
-extern lua_State *simgrid_lua_state;
-static int run_lua_code(int argc,char **argv) {
- DEBUG1("Run lua code %s",argv[0]);
-// fprintf(stderr,"Run lua code %s\n", (argv ? argv[0] : "(null)"));
- lua_State *L = lua_newthread(simgrid_lua_state);
- int ref = luaL_ref(simgrid_lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
+/**
+ * @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]);
+
+ lua_State *L = clone_lua_state(lua_maestro_state);
int res = 1;
- /* Start the co-routine */
- lua_getglobal(L,argv[0]);
- xbt_assert1(lua_isfunction(L,-1),
- "The lua function %s does not seem to exist",argv[0]);
+ /* 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
+ /* push arguments onto the stack */
int i;
- for(i=1;i<argc;i++)
- lua_pushstring(L,argv[i]);
+ for (i = 1; i < argc; i++)
+ lua_pushstring(L, argv[i]);
- // Call the function (in resume)
- xbt_assert2(lua_pcall(L, argc-1, 1, 0) == 0,
- "error running function `%s': %s",argv[0], lua_tostring(L, -1));
+ /* call the function */
+ 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 */
+ lua_pop(L, 1); /* pop returned value */
}
- // cleanups
- luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
- DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
+ 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);
+
+static int launch_application(lua_State * L)
+{
+ const char *file = luaL_checkstring(L, 1);
MSG_function_register_default(run_lua_code);
MSG_launch_application(file);
return 0;
}
-#include "simix/simix.h" //FIXME: KILLME when debugging on simix internals become useless
-static int create_environment(lua_State *L) {
- const char *file = luaL_checkstring(L,1);
- DEBUG1("Loading environment file %s",file);
- MSG_create_environment(file);
- smx_host_t *hosts = SIMIX_host_get_table();
- int i;
- for (i=0;i<SIMIX_host_get_number();i++) {
- DEBUG1("We have an host %s", SIMIX_host_get_name(hosts[i]));
- }
+static int create_environment(lua_State * L)
+{
+ const char *file = luaL_checkstring(L, 1);
+ XBT_DEBUG("Loading environment file %s", file);
+ MSG_create_environment(file);
return 0;
}
-static int debug(lua_State *L) {
- const char *str = luaL_checkstring(L,1);
- DEBUG1("%s",str);
+
+static int debug(lua_State * L)
+{
+ const char *str = luaL_checkstring(L, 1);
+ XBT_DEBUG("%s", str);
return 0;
}
-static int info(lua_State *L) {
- const char *str = luaL_checkstring(L,1);
- INFO1("%s",str);
+
+static int info(lua_State * L)
+{
+ const char *str = luaL_checkstring(L, 1);
+ XBT_INFO("%s", str);
return 0;
}
-static int run(lua_State *L) {
+
+static int run(lua_State * L)
+{
MSG_main();
return 0;
}
-static int clean(lua_State *L) {
+
+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_reset_callbacks();
+ surf_config_models_setup(NULL);
+ MSG_create_environment(NULL);
+ return 0;
+}
+
+/*
+ * Register platform for Simdag
+ */
+
+static int sd_register_platform(lua_State * L)
+{
+ surf_parse = console_parse_platform_wsL07;
+ surf_parse_reset_callbacks();
+ surf_config_models_setup(NULL);
+ SD_create_environment(NULL);
+ return 0;
+}
+
+/*
+ * Register platform for gras
+ */
+static int gras_register_platform(lua_State * L)
+{
+ /* Tell Simgrid we dont wanna use surf parser */
+ surf_parse = console_parse_platform;
+ surf_parse_reset_callbacks();
+ surf_config_models_setup(NULL);
+ gras_create_environment(NULL);
+ return 0;
+}
+
+/**
+ * Register applicaiton for MSG
+ */
+static int msg_register_application(lua_State * L)
+{
+ MSG_function_register_default(run_lua_code);
+ surf_parse = console_parse_application;
+ MSG_launch_application(NULL);
+ return 0;
+}
+
+/*
+ * Register application for gras
+ */
+static int gras_register_application(lua_State * L)
+{
+ gras_function_register_default(run_lua_code);
+ surf_parse = console_parse_application;
+ gras_launch_application(NULL);
+ return 0;
+}
+
static const luaL_Reg simgrid_funcs[] = {
- { "create_environment", create_environment},
- { "launch_application", launch_application},
- { "debug", debug},
- { "info", info},
- { "run", run},
- { "clean", clean},
- /* short names */
- { "platform", create_environment},
- { "application", launch_application},
- { NULL, NULL }
+ {"create_environment", create_environment},
+ {"launch_application", launch_application},
+ {"debug", debug},
+ {"info", info},
+ {"run", run},
+ {"clean", clean},
+ /* short names */
+ {"platform", create_environment},
+ {"application", launch_application},
+ /* methods to bypass XML parser */
+ {"msg_register_platform", msg_register_platform},
+ {"sd_register_platform", sd_register_platform},
+ {"msg_register_application", msg_register_application},
+ {"gras_register_platform", gras_register_platform},
+ {"gras_register_application", gras_register_application},
+ /* gras sub generator method */
+ {"gras_set_process_function", gras_add_process_function},
+ {"gras_generate", gras_generate},
+ {NULL, NULL}
};
/* ********************************************************************************* */
/* module management functions */
/* ********************************************************************************* */
-extern const char*xbt_ctx_factory_to_use; /*Hack: let msg load directly the right factory */
+#define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
-#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
-int luaopen_simgrid(lua_State* L); // Fuck gcc: we don't need that prototype
-int luaopen_simgrid(lua_State* L) {
- //xbt_ctx_factory_to_use = "lua";
+/**
+ * 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)
+{
+ XBT_DEBUG("luaopen_simgrid *****");
- char **argv=malloc(sizeof(char*)*LUA_MAX_ARGS_COUNT);
- int argc=1;
- 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? */
/* Get the command line arguments from the lua interpreter */
- lua_getglobal(L,"arg");
- xbt_assert1(lua_istable(L,-1),"arg parameter is not a table but a %s",lua_typename(L,-1));
- int done=0;
- while (!done) {
- argc++;
- lua_pushinteger(L,argc-2);
- lua_gettable(L,-2);
- if (lua_isnil(L,-1)) {
- done = 1;
- } else {
- xbt_assert1(lua_isstring(L,-1),"argv[%d] got from lua is no string",argc-1);
- xbt_assert2(argc<LUA_MAX_ARGS_COUNT,
- "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",
- __FILE__,LUA_MAX_ARGS_COUNT-1);
- argv[argc-1] = (char*)luaL_checkstring(L,-1);
- lua_pop(L,1);
- DEBUG1("Got command line argument %s from lua",argv[argc-1]);
+ char **argv = malloc(sizeof(char *) * LUA_MAX_ARGS_COUNT);
+ int argc = 1;
+ 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? */
+
+ lua_getglobal(L, "arg");
+ /* if arg is a null value, it means we use lua only as a script to init platform
+ * else it should be a table and then take arg in consideration
+ */
+ if (lua_istable(L, -1)) {
+ int done = 0;
+ while (!done) {
+ argc++;
+ lua_pushinteger(L, argc - 2);
+ lua_gettable(L, -2);
+ if (lua_isnil(L, -1)) {
+ done = 1;
+ } else {
+ xbt_assert(lua_isstring(L, -1),
+ "argv[%d] got from lua is no string", argc - 1);
+ xbt_assert(argc < LUA_MAX_ARGS_COUNT,
+ "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",
+ __FILE__, LUA_MAX_ARGS_COUNT - 1);
+ argv[argc - 1] = (char *) luaL_checkstring(L, -1);
+ lua_pop(L, 1);
+ XBT_DEBUG("Got command line argument %s from lua", argv[argc - 1]);
+ }
}
+ argv[argc--] = NULL;
+
+ /* Initialize the MSG core */
+ MSG_global_init(&argc, argv);
+ XBT_DEBUG("Still %d arguments on command line", argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
}
- argv[argc--]=NULL;
- /* Initialize the MSG core */
- MSG_global_init(&argc,argv);
- DEBUG1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
+ /* Keep the context mechanism informed of our lua world today */
+ lua_maestro_state = L;
+
+ register_c_functions(L);
+
+ return 1;
+}
+
+/**
+ * Makes the appropriate Simgrid functions available to the Lua world.
+ * @param L a Lua world
+ */
+void register_c_functions(lua_State *L) {
/* register the core C functions to lua */
luaL_register(L, "simgrid", simgrid_funcs);
- /* register the tasks 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
- /* Keep the context mechanism informed of our lua world today */
- simgrid_lua_state = L;
+ /* 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
- return 1;
+ /* register the hosts methods to lua */
+ luaL_openlib(L, HOST_MODULE_NAME, Host_methods, 0);
+ 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);
+ lua_pushliteral(L, "__metatable");
+ lua_pushvalue(L, -3);
+ lua_rawset(L, -3);
+ lua_pop(L, 1);
+
+ /* register the links methods to lua */
+ luaL_openlib(L, AS_MODULE_NAME, AS_methods, 0);
+ luaL_newmetatable(L, AS_MODULE_NAME);
+ 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);
+ lua_pop(L, 1);
}
