prosody
feaef6215bb8
util-src/table.c

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util-src/table.c @ 9307:feaef6215bb8

util.stanza: Don't automatically generate ids for iq stanzas Users of this API should provide their own id attribute that meets their uniqueness requirements. The current implementation leaks information (i.e. how many iq stanzas have been sent by the server to other JIDs). Providing any strong guarantees of randomness here would need to pull in additional dependencies that we don't want in this simple library.
author Matthew Wild <mwild1@gmail.com>
date Thu, 13 Sep 2018 16:35:48 +0100
parent 7969:1c6a07606309
child 12402:8deb401a21f6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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7c4cf87f4dff util.table, Makefile: New C module that allows pre-allocation of tables to improve performance and decrease memory fragmentation
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1 #include <lua.h>
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2 #include <lauxlib.h>
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3
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4 static int Lcreate_table(lua_State *L) {
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5 lua_createtable(L, luaL_checkinteger(L, 1), luaL_checkinteger(L, 2));
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6 return 1;
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7 }
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8
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9 static int Lpack(lua_State *L) {
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10 unsigned int n_args = lua_gettop(L);
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11 lua_createtable(L, n_args, 1);
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12 lua_insert(L, 1);
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14 for(int arg = n_args; arg >= 1; arg--) {
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15 lua_rawseti(L, 1, arg);
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16 }
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18 lua_pushinteger(L, n_args);
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19 lua_setfield(L, -2, "n");
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20 return 1;
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21 }
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23 int luaopen_util_table(lua_State *L) {
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24 #if (LUA_VERSION_NUM > 501)
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25 luaL_checkversion(L);
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26 #endif
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27 lua_createtable(L, 0, 2);
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28 lua_pushcfunction(L, Lcreate_table);
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29 lua_setfield(L, -2, "create");
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30 lua_pushcfunction(L, Lpack);
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31 lua_setfield(L, -2, "pack");
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32 return 1;
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33 }