prosody
c3fb802f9e45
util-src/time.c

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util-src/time.c @ 11491:c3fb802f9e45

mod_http_file_share: Report number of items in caches to statsmanager This is neat, O(1) reporting, why don't we do this everywhere? Gives you an idea of how much stuff is in the caches, which may help inform decisions on whether the size is appropriate.
author Kim Alvefur <zash@zash.se>
date Sun, 28 Mar 2021 13:15:11 +0200
parent 10480:94cacf9fd0ae
child 12976:a187600ec7d6
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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_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 }