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Add lextra.c and extra library, with sleep() now part of it instead of in os

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This commit is contained in:
Jeremy Baxter 2023-07-01 09:52:01 +12:00
parent 2d78ec849e
commit 4fb243af7b
5 changed files with 91 additions and 64 deletions
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37
los.c
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@ -40,46 +40,9 @@ os_hostname(lua_State *L)
return 1;
}
/***
* Waits the specified amount of seconds.
*
* @function sleep
* @usage
local minutes = 5
os.sleep(minutes * 60) -- 5 minutes
* @tparam number seconds The amount of seconds to wait.
*/
static int
os_sleep(lua_State *L)
{
/* Implementation from luasocket */
double n;
struct timespec t, r;
n = luaL_checknumber(L, 1);
if (n < 0.0)
n = 0.0;
if (n > INT_MAX)
n = INT_MAX;
t.tv_sec = (int)n;
n -= t.tv_sec;
t.tv_nsec = (int)(n * 1000000000);
if (t.tv_nsec >= 1000000000)
t.tv_nsec = 999999999;
while (nanosleep(&t, &r) != 0) {
t.tv_sec = r.tv_sec;
t.tv_nsec = r.tv_nsec;
}
return 0;
}
static const luaL_Reg oslib[] = {
{"hostname", os_hostname},
{"sleep", os_sleep},
{NULL, NULL}
};