* under the terms of the license (GNU LGPL) which comes with this package. */
#include <stdio.h>
-#include <lua5.1/lauxlib.h>
-#include <lua5.1/lualib.h>
+#include <lauxlib.h>
+#include <lualib.h>
#include "msg/msg.h"
#include "xbt.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
#define TASK_MODULE_NAME "simgrid.Task"
+#define HOST_MODULE_NAME "simgrid.Host"
/* ********************************************************************************* */
/* helper functions */
/* ********************************************************************************* */
-static void stackDump (lua_State *L) {
+static void stackDump (const char *msg, 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) {
p+=sprintf(p,"%g", lua_tonumber(L, i));
break;
+ case LUA_TTABLE:
+ p+=sprintf(p, "Table");
+ break;
+
default: /* other values */
- if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
+ p+=sprintf(p, "???");
+/* if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
p+=sprintf(p,"task");
} else {
p+=printf(p,"%s", lua_typename(L, t));
- }
+ }*/
break;
}
p+=sprintf(p," "); /* put a separator */
}
- DEBUG1("%s",buff);
+ INFO2("%s%s",msg,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);
+ 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);
+ luaL_typerror(L,index,TASK_MODULE_NAME);
tk = *pi;
if(!tk)
- luaL_error(L,"null Task");
+ luaL_error(L,"null Task");
+ lua_pop(L,1);
return tk;
}
/** @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) {
- m_task_t *pi = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
+// NOT USED
+/*static m_task_t *pushTask (lua_State *L,m_task_t tk) {
+ m_task_t *pi = NULL;
+ pi = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
*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;
-
-}
-
+}*/
/* ********************************************************************************* */
/* wrapper functions */
/* ********************************************************************************* */
+/**
+ * Task
+ */
+
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));
- DEBUG0("Created task");
+ INFO0("Creating task");
+ 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;
+ 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);
+ 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);
+ 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);
+ m_task_t tk = checkTask(L,-1);
int res = MSG_task_execute(tk);
lua_pushnumber(L,res);
return 1;
}
static int Task_destroy(lua_State *L) {
- m_task_t tk = checkTask(L,1);
+ m_task_t tk = checkTask(L,-1);
int res = MSG_task_destroy(tk);
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);
- int res = MSG_task_send(tk,mailbox);
- res++;//FIXME: check it instead of avoiding the warning
+ //stackDump("send ",L);
+ m_task_t tk = checkTask(L,-2);
+ const char *mailbox = luaL_checkstring(L,-1);
+ 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 :
+ 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;
+ }
return 0;
}
+
static int Task_recv(lua_State *L) {
m_task_t tk = NULL;
- const char *mailbox = luaL_checkstring(L,1);
- int res = MSG_task_receive(&tk,mailbox);
- MSG_task_ref(tk);
- res++;//FIXME: check it instead of avoiding the warning
- DEBUG1("Task Name : >>>%s",MSG_task_get_name(tk));
- pushTask(L,tk);
+ const char *mailbox = luaL_checkstring(L,-1);
+ MSG_error_t res = MSG_task_receive(&tk,mailbox);
+
+ 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);
+
+ 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;
+ }
+
return 1;
}
{0,0}
};
static int Task_gc(lua_State *L) {
- m_task_t tk=checkTask(L,1);
+ m_task_t tk=checkTask(L,-1);
if (tk) MSG_task_destroy(tk);
- //printf("GoodBye Task(%p)\n",lua_touserdata(L,1));
return 0;
}
return 1;
}
-
static const luaL_reg Task_meta[] = {
{"__gc", Task_gc},
{"__tostring", Task_tostring},
{0,0}
};
+/**
+ * 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);
+ DEBUG0("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 failled");
+ }
+ 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 const luaL_reg Host_methods[] = {
+ {"getByName", Host_get_by_name},
+ {"name", Host_get_name},
+ {"number", Host_number},
+ {0,0}
+};
+
+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}
+};
+
/*
* Environment related
*/
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
int res = 1;
// cleanups
luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
- fprintf(stderr,"Execution of lua code %s is over\n", (argv ? argv[0] : "(null)"));
+ DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
return res;
}
static int launch_application(lua_State *L) {
/* register the core C functions to lua */
luaL_register(L, "simgrid", simgrid_funcs);
- /* register the tasks to lua */
+ /* 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_rawset(L,-3); //hide metatable:metatable.__metatable = methods
lua_pop(L,1); //drop metatable
+ /* 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);
+
/* Keep the context mechanism informed of our lua world today */
simgrid_lua_state = L;
