+++ /dev/null
-/* Copyright (c) 2010-2018. 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. */
-
-/* SimGrid Lua bindings */
-
-#include "lua_private.hpp"
-#include "simgrid/s4u/Host.hpp"
-#include <lauxlib.h>
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(lua_host, "Lua Host module");
-
-#define HOST_MODULE_NAME "simgrid.host"
-#define HOST_FIELDNAME "__simgrid_host"
-/* ********************************************************************************* */
-/* simgrid.host API */
-/* ********************************************************************************* */
-
-/** @brief Ensures that the pointed stack value is an host userdatum 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
- */
-sg_host_t sglua_check_host(lua_State * L, int index)
-{
- luaL_checktype(L, index, LUA_TTABLE);
- lua_getfield(L, index, HOST_FIELDNAME);
- sg_host_t *pi = (sg_host_t *) luaL_checkudata(L, lua_gettop(L), HOST_MODULE_NAME);
- lua_pop(L, 1);
- if (pi == nullptr)
- XBT_ERROR("luaL_checkudata() returned nullptr");
- sg_host_t ht = *pi;
- if (not ht)
- luaL_error(L, "null Host");
- return ht;
-}
-
-/**
- * \brief Returns a host given its name. This is a lua function.
- *
- * \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 will be pushed onto the stack
- */
-static int l_host_get_by_name(lua_State * L)
-{
- const char *name = luaL_checkstring(L, 1);
- lua_remove(L, 1); /* remove the args from the stack */
-
- sg_host_t host = sg_host_by_name(name);
- lua_ensure(host, "No host name '%s' found.", name);
-
- lua_newtable(L); /* table */
- sg_host_t *lua_host = (sg_host_t *) lua_newuserdata(L, sizeof(sg_host_t)); /* table userdatum */
- *lua_host = host;
- luaL_getmetatable(L, HOST_MODULE_NAME); /* table userdatum metatable */
- lua_setmetatable(L, -2); /* table userdatum */
- lua_setfield(L, -2, HOST_FIELDNAME); /* table -- put the userdata as field of the table */
-
- return 1;
-}
-
-/**
- * \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)
-{
- sg_host_t ht = sglua_check_host(L, 1);
- lua_pushstring(L, ht->get_cname());
- return 1;
-}
-
-/**
- * \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)
-{
- xbt_dynar_t hosts = sg_hosts_as_dynar();
- lua_pushinteger(L, xbt_dynar_length(hosts));
- xbt_dynar_free(&hosts);
- return 1;
-}
-
-/**
- * \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);
- xbt_dynar_t hosts = sg_hosts_as_dynar();
- sg_host_t host = xbt_dynar_get_as(hosts,index - 1,sg_host_t);// lua indexing start by 1 (lua[1] <=> C[0])
- lua_newtable(L); /* create a table, put the userdata on top of it */
- sg_host_t *lua_host = (sg_host_t *) lua_newuserdata(L, sizeof(sg_host_t));
- *lua_host = host;
- luaL_getmetatable(L, HOST_MODULE_NAME);
- lua_setmetatable(L, -2);
- lua_setfield(L, -2, HOST_FIELDNAME); /* put the userdata as field of the table */
- xbt_dynar_free(&hosts);
- return 1;
-}
-
-/**
- * \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)
-{
- sg_host_t ht = sglua_check_host(L, 1);
- const char *prop = luaL_checkstring(L, 2);
- lua_pushstring(L, sg_host_get_property_value(ht,prop));
- return 1;
-}
-
-/**
- * \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)
-{
- //sg_host_t ht = sglua_check_host(L, 1);
- //FIXME: not working..__MSG_host_priv_free(MSG_host_priv(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},
- {"get_prop_value", l_host_get_property_value},
- {"destroy", l_host_destroy},
- // Bypass XML Methods
- {"set_property", console_host_set_property},
- {nullptr, nullptr}
-};
-
-/**
- * \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}
-};
-
-/**
- * \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 sglua_register_host_functions(lua_State* L)
-{
- /* create a table simgrid.host and fill it with host functions */
- lua_getglobal(L, "simgrid"); /* simgrid */
- luaL_newlib(L, host_functions); /* simgrid simgrid.host */
- lua_setfield(L, -2, "host"); /* simgrid */
- lua_getfield(L, -1, "host"); /* simgrid simgrid.host */
-
- /* create the metatable for host, add it to the Lua registry */
- luaL_newmetatable(L, HOST_MODULE_NAME); /* simgrid simgrid.host mt */
-
- /* fill the metatable */
- luaL_setfuncs(L, host_meta, 0); /* simgrid simgrid.host mt */
-
- /**
- * Copy the table and push it onto the stack.
- * Required for the lua_setfield call below.
- */
- lua_getfield(L, -3, "host"); /* simgrid simgrid.host mt simgrid.host */
-
- /* metatable.__index = simgrid.host
- * we put the host functions inside the host userdata itself:
- * this allows to write my_host:method(args) for
- * simgrid.host.method(my_host, args) */
- lua_setfield(L, -2, "__index"); /* simgrid simgrid.host mt */
-
- lua_setmetatable(L, -2); /* simgrid simgrid.host */
- lua_pop(L, 2); /* -- */
-}
-
