prosody
1e229d710a3c
util-src/time.c

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util-src/time.c @ 13439:1e229d710a3c

util.signal: Add support for signalfd(2) on Linux signalfd allows handling signal events using the same method as sockets, via file descriptors. Thus all signal dispatch can go through the same main event loop as everything else, removing need for thread-scary signal handling where execution would just jump to the signal handler regardless of the state of Lua, and needing to keep track of Lua states/threads.
author Kim Alvefur <zash@zash.se>
date Sat, 24 Feb 2024 00:05:29 +0100
parent 12976:a187600ec7d6
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rev   line source
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Kim Alvefur <zash@zash.se>
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1 #ifndef _POSIX_C_SOURCE
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2 #define _POSIX_C_SOURCE 200809L
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3 #endif
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4
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5 #include <time.h>
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6 #include <lua.h>
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7
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8 static lua_Number tv2number(struct timespec *tv) {
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9 return tv->tv_sec + tv->tv_nsec * 1e-9;
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10 }
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11
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12 static int lc_time_realtime(lua_State *L) {
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13 struct timespec t;
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14 clock_gettime(CLOCK_REALTIME, &t);
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15 lua_pushnumber(L, tv2number(&t));
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16 return 1;
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17 }
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18
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19 static int lc_time_monotonic(lua_State *L) {
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20 struct timespec t;
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21 clock_gettime(CLOCK_MONOTONIC, &t);
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22 lua_pushnumber(L, tv2number(&t));
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23 return 1;
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24 }
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25
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26 int luaopen_prosody_util_time(lua_State *L) {
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27 lua_createtable(L, 0, 2);
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28 {
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29 lua_pushcfunction(L, lc_time_realtime);
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30 lua_setfield(L, -2, "now");
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31 lua_pushcfunction(L, lc_time_monotonic);
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32 lua_setfield(L, -2, "monotonic");
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33 }
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34 return 1;
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35 }
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36 int luaopen_util_time(lua_State *L) {
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37 return luaopen_prosody_util_time(L);
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38 }