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script: add clock module #500

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script: add clock module #500

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6 changes: 6 additions & 0 deletions scripts/clock.lua
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
-- example script that demonstrates use of the clock module

function setup(thread)
print("Current wall time in us:" .. string.format("%.0f", clock.realtime()))
print("Current monotonic time in us:" .. string.format("%.0f", clock.monotonic()))
end
42 changes: 36 additions & 6 deletions src/script.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "script.h"
#include "http_parser.h"
#include "zmalloc.h"
Expand All @@ -19,6 +20,8 @@ static int script_stats_len(lua_State *);
static int script_stats_index(lua_State *);
static int script_thread_index(lua_State *);
static int script_thread_newindex(lua_State *);
static int script_clock_real_time(lua_State *);
static int script_clock_monotonic(lua_State *);
static int script_wrk_lookup(lua_State *);
static int script_wrk_connect(lua_State *);

Expand All @@ -45,6 +48,12 @@ static const struct luaL_Reg threadlib[] = {
{ NULL, NULL }
};

static const struct luaL_Reg clocklib[] = {
{ "realtime", script_clock_real_time },
{ "monotonic", script_clock_monotonic },
{ NULL, NULL }
};

lua_State *script_create(char *file, char *url, char **headers) {
lua_State *L = luaL_newstate();
luaL_openlibs(L);
Expand All @@ -57,6 +66,8 @@ lua_State *script_create(char *file, char *url, char **headers) {
luaL_newmetatable(L, "wrk.thread");
luaL_register(L, NULL, threadlib);

luaL_register(L, "clock", clocklib);

struct http_parser_url parts = {};
script_parse_url(url, &parts);
char *path = "/";
Expand All @@ -74,12 +85,12 @@ lua_State *script_create(char *file, char *url, char **headers) {

lua_getglobal(L, "wrk");

set_field(L, 4, "scheme", push_url_part(L, url, &parts, UF_SCHEMA));
set_field(L, 4, "host", push_url_part(L, url, &parts, UF_HOST));
set_field(L, 4, "port", push_url_part(L, url, &parts, UF_PORT));
set_fields(L, 4, fields);
set_field(L, 5, "scheme", push_url_part(L, url, &parts, UF_SCHEMA));
set_field(L, 5, "host", push_url_part(L, url, &parts, UF_HOST));
set_field(L, 5, "port", push_url_part(L, url, &parts, UF_PORT));
set_fields(L, 5, fields);

lua_getfield(L, 4, "headers");
lua_getfield(L, 5, "headers");
for (char **h = headers; *h; h++) {
char *p = strchr(*h, ':');
if (p && p[1] == ' ') {
Expand All @@ -88,7 +99,7 @@ lua_State *script_create(char *file, char *url, char **headers) {
lua_settable(L, 5);
}
}
lua_pop(L, 5);
lua_pop(L, 6);

if (file && luaL_dofile(L, file)) {
const char *cause = lua_tostring(L, -1);
Expand Down Expand Up @@ -436,6 +447,25 @@ static int script_thread_newindex(lua_State *L) {
return 0;
}

static int script_clock_real_time(lua_State *L) {
struct timespec t = {0, 0};
uint64_t now = 0;
clock_gettime(CLOCK_REALTIME, &t);
now = t.tv_sec * 1000000 + t.tv_nsec/1000;
lua_pushnumber(L, now);
return 1;
}

static int script_clock_monotonic(lua_State *L) {
struct timespec t = {0, 0};
uint64_t now = 0;
clock_gettime(CLOCK_MONOTONIC, &t);
now = t.tv_sec * 1000000 + t.tv_nsec/1000;
lua_pushnumber(L, now);
return 1;
}


static int script_wrk_lookup(lua_State *L) {
struct addrinfo *addrs;
struct addrinfo hints = {
Expand Down