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-rw-r--r--util-src/time.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/util-src/time.c b/util-src/time.c
new file mode 100644
index 00000000..bfad52ee
--- /dev/null
+++ b/util-src/time.c
@@ -0,0 +1,35 @@
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 199309L
+#endif
+
+#include <time.h>
+#include <lua.h>
+
+lua_Number tv2number(struct timespec *tv) {
+ return tv->tv_sec + tv->tv_nsec * 1e-9;
+}
+
+int lc_time_realtime(lua_State *L) {
+ struct timespec t;
+ clock_gettime(CLOCK_REALTIME, &t);
+ lua_pushnumber(L, tv2number(&t));
+ return 1;
+}
+
+int lc_time_monotonic(lua_State *L) {
+ struct timespec t;
+ clock_gettime(CLOCK_MONOTONIC, &t);
+ lua_pushnumber(L, tv2number(&t));
+ return 1;
+}
+
+int luaopen_util_time(lua_State *L) {
+ lua_createtable(L, 0, 2);
+ {
+ lua_pushcfunction(L, lc_time_realtime);
+ lua_setfield(L, -2, "now");
+ lua_pushcfunction(L, lc_time_monotonic);
+ lua_setfield(L, -2, "monotonic");
+ }
+ return 1;
+}