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| author | Emil Renner Berthing <esmil@mailme.dk> | 2012-07-31 18:30:22 +0200 |
|---|---|---|
| committer | Emil Renner Berthing <esmil@mailme.dk> | 2012-07-31 18:47:58 +0200 |
| commit | e1b242d0df9ced1ed6b01a69a12ac6078265e635 (patch) | |
| tree | 107364369cabb52ded03bdb8016c78400f0db7b0 | |
| parent | 526c253d57b2daed8a122d56a0532dc1e7e83b40 (diff) | |
| download | lem-e1b242d0df9ced1ed6b01a69a12ac6078265e635.tar.gz lem-e1b242d0df9ced1ed6b01a69a12ac6078265e635.tar.xz lem-e1b242d0df9ced1ed6b01a69a12ac6078265e635.zip | |
utils: add now function to wrap gettimeofday
| -rw-r--r-- | README.markdown | 4 | ||||
| -rw-r--r-- | lem/utils.c | 21 |
2 files changed, 25 insertions, 0 deletions
diff --git a/README.markdown b/README.markdown index e882ce0..93b057a 100644 --- a/README.markdown +++ b/README.markdown @@ -112,6 +112,10 @@ This sets `utils` to a table with the following functions. If `status` is supplied this will be the exit status of program, otherwise `EXIT_SUCCESS` is used. +* __utils.now()__ + + Return the number of seconds since the epoch (1970-01-01 UTC). + * __utils.sleeper()__ This function returns a new sleeper object. diff --git a/lem/utils.c b/lem/utils.c index d93cf98..ad93c6b 100644 --- a/lem/utils.c +++ b/lem/utils.c @@ -16,6 +16,7 @@ * along with LEM. If not, see <http://www.gnu.org/licenses/>. */ +#include <sys/time.h> #include <lem.h> static int @@ -191,6 +192,22 @@ resume(lua_State *T) return 0; } +static int +now_lua(lua_State *L) +{ + struct timeval tp; + lua_Number ret; + + (void)gettimeofday(&tp, NULL); + + ret = (lua_Number)tp.tv_usec; + ret /= 1.0e6; + ret += (lua_Number)tp.tv_sec; + + lua_pushnumber(L, ret); + return 1; +} + int luaopen_lem_utils(lua_State *L) { @@ -239,5 +256,9 @@ luaopen_lem_utils(lua_State *L) lua_pushcfunction(L, resume); lua_setfield(L, -2, "resume"); + /* set now function */ + lua_pushcfunction(L, now_lua); + lua_setfield(L, -2, "now"); + return 1; } |