XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua, bindings, "Lua Bindings");
#define TASK_MODULE_NAME "simgrid.task"
+#define COMM_MODULE_NAME "simgrid.comm"
#define HOST_MODULE_NAME "simgrid.host"
+#define PROCESS_MODULE_NAME "simgrid.process"
// Surf (bypass XML)
#define LINK_MODULE_NAME "simgrid.link"
#define ROUTE_MODULE_NAME "simgrid.route"
static lua_State* sglua_maestro_state;
+static const char* msg_errors[] = {
+ NULL,
+ "timeout",
+ "transfer failure",
+ "host failure",
+ "task canceled"
+};
+
int luaopen_simgrid(lua_State *L);
static void register_c_functions(lua_State *L);
static int run_lua_code(int argc, char **argv);
* \return number of values returned to Lua
*
* - Argument 1 (task): the task to execute
- * - Return value (nil or error): none if the task was successfully executed, or an error
- * string in case of failure, which may be "task canceled" or "host failure"
+ * - Return value (nil or string): nil if the task was successfully executed,
+ * or an error string in case of failure, which may be "task canceled" or
+ * "host failure"
*/
static int l_task_execute(lua_State* L)
{
m_task_t task = sglua_checktask(L, 1);
MSG_error_t res = MSG_task_execute(task);
- switch (res) {
-
- case MSG_OK:
- return 0;
-
- case MSG_TASK_CANCELED:
- lua_pushliteral(L, "task canceled");
- return 1;
-
- case MSG_HOST_FAILURE:
- lua_pushliteral(L, "host failure");
- return 1;
-
- default:
- xbt_die("Unexpected result of MSG_task_execute(): %d, please report this bug", res);
+ if (res == MSG_OK) {
+ return 0;
+ }
+ else {
+ lua_pushstring(L, msg_errors[res]);
+ return 1;
}
}
* - Argument 1 (task): the task to send
* - Argument 2 (string or compatible): mailbox name, as a real string or any
* type convertible to string (numbers always are)
- * - Return value (nil or error): none if the communication was successful,
+ * - Return values (nil or string): nil if the communication was successful,
* or an error string in case of failure, which may be "timeout",
* "host failure" or "transfer failure"
*/
MSG_process_sleep(0);
}
- switch (res) {
-
- case MSG_OK:
+ if (res == MSG_OK) {
/* the receiver is the owner of the task and may destroy it:
* remove the C task on my side so that I don't garbage collect it */
lua_getfield(L, 1, "__simgrid_task");
m_task_t* udata = (m_task_t*) luaL_checkudata(L, -1, TASK_MODULE_NAME);
*udata = NULL;
return 0;
-
- case MSG_TIMEOUT:
- XBT_DEBUG("MSG_task_send failed: timeout");
- lua_settop(L, 0);
- lua_pushliteral(L, "timeout");
- return 1;
-
- case MSG_TRANSFER_FAILURE:
- XBT_DEBUG("MSG_task_send failed: transfer failure");
+ }
+ else {
lua_settop(L, 0);
- lua_pushliteral(L, "transfer failure");
+ lua_pushstring(L, msg_errors[res]);
return 1;
+ }
+}
- case MSG_HOST_FAILURE:
- XBT_DEBUG("MSG_task_send failed: host failure");
- lua_settop(L, 0);
- lua_pushliteral(L, "host failure");
- return 1;
+static int l_task_isend(lua_State* L)
+{
+ // TODO
+ return 0;
+}
- default:
- xbt_die("Unexpected result of MSG_task_send: %d, please report this bug", res);
- }
+static int l_task_dsend(lua_State* L)
+{
+ // TODO
+ return 0;
}
/**
* - Argument 1 (string or compatible): mailbox name, as a real string or any
* type convertible to string (numbers always are)
* - Argument 2 (number, optional): timeout (default is no timeout)
- * - Return value (task or nil+err): the task received, or nil plus an error message if
- * the communication has failed
+ * - Return values (task or nil + string): the task received, or nil plus an
+ * error message if the communication has failed
*/
static int l_task_recv(lua_State* L)
{
/* -- */
MSG_error_t res = MSG_task_receive_with_timeout(&task, mailbox, timeout);
- switch (res) {
-
- case MSG_OK:
+ if (res == MSG_OK) {
/* copy the data directly from sender's stack */
- {
lua_State* sender_stack = MSG_task_get_data(task);
sglua_copy_value(sender_stack, L);
/* task */
MSG_task_set_data(task, NULL);
return 1;
}
-
- case MSG_TIMEOUT:
- XBT_DEBUG("MSG_task_send failed: timeout");
- lua_pushnil(L);
- lua_pushliteral(L, "timeout");
- return 2;
-
- case MSG_TRANSFER_FAILURE:
- XBT_DEBUG("MSG_task_send failed: transfer failure");
- lua_pushnil(L);
- lua_pushliteral(L, "transfer failure");
- return 2;
-
- case MSG_HOST_FAILURE:
- XBT_DEBUG("MSG_task_send failed: host failure");
+ else {
lua_pushnil(L);
- lua_pushliteral(L, "host failure");
+ lua_pushstring(L, msg_errors[res]);
return 2;
-
- default:
- xbt_die("Unexpected result of MSG_task_recv: %d, please report this bug", res);
}
}
+static int l_task_irecv(lua_State* L)
+{
+ // TODO
+ return 0;
+}
+
static const luaL_reg task_functions[] = {
{"new", l_task_new},
{"get_name", l_task_get_name},
{"get_computation_duration", l_task_get_computation_duration},
{"execute", l_task_execute},
{"send", l_task_send},
+ {"isend", l_task_isend},
+ {"dsend", l_task_dsend},
{"recv", l_task_recv},
+ {"irecv", l_task_irecv},
{NULL, NULL}
};
{NULL, NULL}
};
+/* ********************************************************************************* */
+/* simgrid.comm API */
+/* ********************************************************************************* */
+
+/**
+ * \brief Ensures that a value in the stack is a comm and returns it.
+ * \param L a Lua state
+ * \param index an index in the Lua stack
+ * \return the C comm
+ */
+static msg_comm_t sglua_checkcomm(lua_State* L, int index)
+{
+ msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, index, COMM_MODULE_NAME));
+ lua_pop(L, 1);
+ return comm;
+}
+
+/**
+ * \brief Blocks the current process until a communication is finished.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * This function performs a waitany operation: you can specify an
+ * individual communication or a list of communications.
+ * If you provide a list, the function returns whenever one communication of
+ * the list is finished, and this communication will be removed from you list.
+ * This means you can make a waitall operation with successive calls to this
+ * function.
+ *
+ * - Argument 1 (comm or table): a comm or an array of comms
+ * - Argument 2 (number, optional): timeout (supported only when there is only
+ * one comm)
+ * - Return values (comm + string): the first comm of your list that finishes,
+ * plus an error string if this comm was unsuccessful.
+ */
+static int l_comm_wait(lua_State* L) {
+
+ if (lua_istable(L, 1)) {
+ // TODO implement waitany
+ THROW_UNIMPLEMENTED;
+ }
+ else {
+ /* only one comm */
+ msg_comm_t comm = sglua_checkcomm(L, 1);
+ double timeout = -1;
+ if (lua_gettop(L) >= 2) {
+ timeout = luaL_checknumber(L, 2);
+ }
+ /* comm ... */
+ MSG_error_t res = MSG_comm_wait(comm, timeout);
+ lua_settop(L, 1);
+ /* comm */
+ if (res == MSG_OK) {
+ return 1;
+ }
+ else {
+ lua_pushstring(L, msg_errors[res]);
+ /* comm error */
+ return 2;
+ }
+ }
+ return 0;
+}
+
+/**
+ * @brief Returns whether a communication is finished.
+ *
+ * This function always returns immediately.
+ * It performs a testany operation: you can provide an individual
+ * communication or a list of communications.
+ *
+ * - Argument 1 (comm or table): a comm or an array of comms
+ * - Return values (nil or comm + string): if no comm from your list is finished
+ * yet, returns nil. If a comm is finished, removes it from your list and
+ * returns it, plus an error string if it was unsuccessful.
+ */
+static int l_comm_test(lua_State* L) {
+
+ if (lua_istable(L, 1)) {
+ /* TODO implement testany */
+ THROW_UNIMPLEMENTED;
+ }
+ else {
+ /* only one comm */
+ msg_comm_t comm = sglua_checkcomm(L, 1);
+ /* comm ... */
+ if (!MSG_comm_test(comm)) {
+ return 0;
+ }
+ else {
+ lua_settop(L, 1);
+ /* comm */
+ MSG_error_t res = MSG_comm_get_status(comm);
+ if (res == MSG_OK) {
+ return 1;
+ }
+ else {
+ lua_pushstring(L, msg_errors[res]);
+ /* comm error */
+ return 2;
+ }
+ }
+ }
+}
+
+static const luaL_reg comm_functions[] = {
+ {"wait", l_comm_wait},
+ {"test", l_comm_test},
+ {NULL, NULL}
+};
+
+/**
+ * \brief Finalizes a comm userdata.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Argument 1 (userdata): a comm
+ */
+static int l_comm_gc(lua_State* L)
+{
+ /* ctask */
+ msg_comm_t comm = *((msg_comm_t*) luaL_checkudata(L, 1, COMM_MODULE_NAME));
+ MSG_comm_destroy(comm);
+ return 0;
+}
+
+/**
+ * \brief Metamethods of the comm userdata.
+ */
+static const luaL_reg comm_meta[] = {
+ {"__gc", l_comm_gc},
+ {NULL, NULL}
+};
+
/* ********************************************************************************* */
/* simgrid.host API */
/* ********************************************************************************* */
{0, 0}
};
+/* ********************************************************************************* */
+/* simgrid.process API */
+/* ********************************************************************************* */
+
+/**
+ * \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
+ * - Return value (nil or string): nil in everything went ok, or a string error
+ * if case of failure ("host failure")
+ */
+static int l_process_sleep(lua_State* L)
+{
+ double duration = luaL_checknumber(L, 1);
+ MSG_error_t res = MSG_process_sleep(duration);
+
+ switch (res) {
+
+ case MSG_OK:
+ return 0;
+
+ case MSG_HOST_FAILURE:
+ lua_pushliteral(L, "host failure");
+ return 1;
+
+ default:
+ xbt_die("Unexpected result of MSG_process_sleep: %d, please report this bug", res);
+ }
+}
+
+static const luaL_reg process_functions[] = {
+ {"sleep", l_process_sleep},
+ /* TODO: self, create, kill, suspend, is_suspended, resume, get_name,
+ * get_pid, get_ppid, migrate
+ */
+ {NULL, NULL}
+};
+
/* ********************************************************************************* */
/* lua_stub_generator functions */
/* ********************************************************************************* */
*
* - Argument 1 (string): name of the deployment file to load
*/
-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;
*
* - Argument 1 (string): name of the platform file to load
*/
-static int create_environment(lua_State * L)
-{
- const char *file = luaL_checkstring(L, 1);
+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;
*
* - Argument 1 (string): the text to print
*/
-static int debug(lua_State * L)
-{
- const char *str = luaL_checkstring(L, 1);
+static int debug(lua_State* L) {
+
+ const char* str = luaL_checkstring(L, 1);
XBT_DEBUG("%s", str);
return 0;
}
*
* - Argument 1 (string): the text to print
*/
-static int info(lua_State * L)
-{
- const char *str = luaL_checkstring(L, 1);
+static int info(lua_State* L) {
+
+ const char* str = luaL_checkstring(L, 1);
XBT_INFO("%s", str);
return 0;
}
* \param L a Lua state
* \return number of values returned to Lua
*/
-static int run(lua_State * L)
-{
+static int run(lua_State* L) {
+
MSG_main();
return 0;
}
+/**
+ * \brief Returns the current simulated time.
+ * \param L a Lua state
+ * \return number of values returned to Lua
+ *
+ * - Return value (number): the simulated time
+ */
+static int get_clock(lua_State* L) {
+
+ lua_pushnumber(L, MSG_get_clock());
+ return 1;
+}
+
/**
* \brief Cleans the simulation.
* \param L a Lua state
{"debug", debug},
{"info", info},
{"run", run},
+ {"get_clock", get_clock},
/* short names */
{"platform", create_environment},
{"application", launch_application},
/* simgrid.task mt simgrid.task */
/* metatable.__index = simgrid.task
* we put the task functions inside the task itself:
- * this allows to write task:method(args) for
- * simgrid.task.method(task, args) */
+ * this allows to write my_task:method(args) for
+ * simgrid.task.method(my_task, args) */
lua_setfield(L, -2, "__index");
/* simgrid.task mt */
lua_pop(L, 2);
/* -- */
}
+/**
+ * \brief Registers the comm functions into the table simgrid.comm.
+ *
+ * Also initialize the metatable of the comm userdata type.
+ *
+ * \param L a lua state
+ */
+static void register_comm_functions(lua_State* L)
+{
+ /* create a table simgrid.com and fill it with com functions */
+ luaL_openlib(L, COMM_MODULE_NAME, comm_functions, 0);
+ /* simgrid.comm */
+
+ /* create the metatable for comms, add it to the Lua registry */
+ luaL_newmetatable(L, COMM_MODULE_NAME);
+ /* simgrid.comm mt */
+ /* fill the metatable */
+ luaL_openlib(L, NULL, comm_meta, 0);
+ /* simgrid.comm mt */
+ lua_pushvalue(L, -2);
+ /* simgrid.comm mt simgrid.comm */
+ /* metatable.__index = simgrid.comm
+ * we put the comm functions inside the comm itself:
+ * this allows to write my_comm:method(args) for
+ * simgrid.comm.method(my_comm, args) */
+ lua_setfield(L, -2, "__index");
+ /* simgrid.comm mt */
+ lua_pop(L, 2);
+ /* -- */
+}
+
/**
* \brief Registers the host functions into the table simgrid.host.
*
/* 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
+ * this allows to write my_host:method(args) for
+ * simgrid.host.method(my_host, args) */
lua_setfield(L, -2, "__index");
/* simgrid.host mt */
lua_pop(L, 2);
/* -- */
}
+/**
+ * \brief Registers the process functions into the table simgrid.process.
+ * \param L a lua state
+ */
+static void register_process_functions(lua_State* L)
+{
+ luaL_openlib(L, PROCESS_MODULE_NAME, process_functions, 0);
+ /* simgrid.process */
+ lua_pop(L, 1);
+}
+
/**
* \brief Registers the platform functions into the table simgrid.platf.
* \param L a lua state
{
register_core_functions(L);
register_task_functions(L);
+ register_comm_functions(L);
register_host_functions(L);
+ register_process_functions(L);
register_platf_functions(L);
}
