prosody
46a7792fdac5
util-src/table.c

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util-src/table.c @ 10096:46a7792fdac5

util.poll: Add missing return statements in fallback mode These allowed modifying or deleting select() state for unregistered FDs. During normal usage this should never happen. Modifying one that isn't set might cause weirdness but deleting an already deleted FD isn't a problem.
author Kim Alvefur <zash@zash.se>
date Sun, 28 Jul 2019 16:17:23 +0200
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
Matthew Wild <mwild1@gmail.com>
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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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13
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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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17
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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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22
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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 }