X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/347996b4a10c4e8579080692afa60e0afb88b60a..HEAD:/src/bindings/lua/lua_host.cpp diff --git a/src/bindings/lua/lua_host.cpp b/src/bindings/lua/lua_host.cpp deleted file mode 100644 index cf6e1abb7c..0000000000 --- a/src/bindings/lua/lua_host.cpp +++ /dev/null @@ -1,229 +0,0 @@ -/* Copyright (c) 2010, 2012-2015. 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.h" -#include -extern "C" { -#include -} - -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua_host, bindings, "Lua bindings (host module)"); - -#define HOST_MODULE_NAME "simgrid.host" -#define HOST_FIELDNAME "__simgrid_host" -/* ********************************************************************************* */ -/* simgrid.host API */ -/* ********************************************************************************* */ - -/** - * \brief Ensures that a value in the stack is a host and returns it. - * - * This function is called from C and helps to verify that a specific - * userdatum on the stack is in fact a sg_host_t. - * - * \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) -{ - sg_host_t *pi, ht; - luaL_checktype(L, index, LUA_TTABLE); - lua_getfield(L, index, HOST_FIELDNAME); - pi = (sg_host_t *) luaL_checkudata(L, lua_gettop(L), HOST_MODULE_NAME); - if (pi == NULL) - XBT_ERROR("luaL_checkudata() returned NULL"); - ht = *pi; - if (!ht) - luaL_error(L, "null Host"); - lua_pop(L, 1); - 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); - XBT_DEBUG("Getting host by name..."); - sg_host_t host = sg_host_by_name(name); - if (!host) { - XBT_ERROR("sg_get_host_by_name failed, requested hostname: %s", 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 */ - - /* remove the args from the stack */ - lua_remove(L, 1); - 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, sg_host_get_name(ht)); - 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}, - {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} -}; - -/** - * \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); /* -- */ -} -