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better ops on timestamp/jiffies

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This commit is contained in:
Axel Kittenberger 2010-11-29 11:37:46 +00:00
parent 80d55b0708
commit 138048861f
1 changed files with 21 additions and 7 deletions
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14
lsyncd.c
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@ -926,6 +926,11 @@ l_jiffies_add(lua_State *L)
{ {
clock_t *p1 = (clock_t *) lua_touserdata(L, 1); clock_t *p1 = (clock_t *) lua_touserdata(L, 1);
clock_t *p2 = (clock_t *) lua_touserdata(L, 2); clock_t *p2 = (clock_t *) lua_touserdata(L, 2);
if (p1 && p2) {
logstring("Error", "Cannot add to timestamps!");
exit(-1); /* ERRNO */
}
{
clock_t a1 = p1 ? *p1 : luaL_checknumber(L, 1) * clocks_per_sec; clock_t a1 = p1 ? *p1 : luaL_checknumber(L, 1) * clocks_per_sec;
clock_t a2 = p2 ? *p2 : luaL_checknumber(L, 2) * clocks_per_sec; clock_t a2 = p2 ? *p2 : luaL_checknumber(L, 2) * clocks_per_sec;
clock_t *r = (clock_t *) lua_newuserdata(L, sizeof(clock_t)); clock_t *r = (clock_t *) lua_newuserdata(L, sizeof(clock_t));
@ -934,6 +939,7 @@ l_jiffies_add(lua_State *L)
*r = a1 + a2; *r = a1 + a2;
return 1; return 1;
} }
}
/** /**
* Adds two jiffies or a number to a jiffy * Adds two jiffies or a number to a jiffy
@ -943,6 +949,14 @@ l_jiffies_sub(lua_State *L)
{ {
clock_t *p1 = (clock_t *) lua_touserdata(L, 1); clock_t *p1 = (clock_t *) lua_touserdata(L, 1);
clock_t *p2 = (clock_t *) lua_touserdata(L, 2); clock_t *p2 = (clock_t *) lua_touserdata(L, 2);
if (p1 && p2) {
/* substracting two timestamps result in a timespan in seconds */
clock_t a1 = *p1;
clock_t a2 = *p2;
lua_pushnumber(L, ((double) (a1 -a2)) / clocks_per_sec);
return 1;
}
/* makes a timestamp earlier by NUMBER seconds */
clock_t a1 = p1 ? *p1 : luaL_checknumber(L, 1) * clocks_per_sec; clock_t a1 = p1 ? *p1 : luaL_checknumber(L, 1) * clocks_per_sec;
clock_t a2 = p2 ? *p2 : luaL_checknumber(L, 2) * clocks_per_sec; clock_t a2 = p2 ? *p2 : luaL_checknumber(L, 2) * clocks_per_sec;
clock_t *r = (clock_t *) lua_newuserdata(L, sizeof(clock_t)); clock_t *r = (clock_t *) lua_newuserdata(L, sizeof(clock_t));