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Add os.cputime() (#159)

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And use it in microbench to get slightly more accurate results.
This commit is contained in:
Ben Noordhuis 2023-11-30 00:05:48 +01:00 committed by GitHub
parent a140e1cf2c
commit b6b70e471c
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2 changed files with 18 additions and 1 deletions
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17
quickjs-libc.c
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@ -45,6 +45,7 @@
#include <dlfcn.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/wait.h>
#if defined(__APPLE__)
@ -1948,6 +1949,21 @@ static JSValue js_os_signal(JSContext *ctx, JSValueConst this_val,
return JS_UNDEFINED;
}
#ifndef _WIN32
static JSValue js_os_cputime(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
struct rusage ru;
int64_t cputime;
cputime = 0;
if (!getrusage(RUSAGE_SELF, &ru))
cputime = (int64_t)ru.ru_utime.tv_sec * 1000000 + ru.ru_utime.tv_usec;
return JS_NewInt64(ctx, cputime);
}
#endif
#if defined(__linux__) || defined(__APPLE__)
static int64_t get_time_us(void)
{
@ -3617,6 +3633,7 @@ static const JSCFunctionListEntry js_os_funcs[] = {
OS_FLAG(SIGTSTP),
OS_FLAG(SIGTTIN),
OS_FLAG(SIGTTOU),
JS_CFUNC_DEF("cputime", 0, js_os_cputime ),
#endif
JS_CFUNC_DEF("now", 0, js_os_now ),
JS_CFUNC_DEF("setTimeout", 2, js_os_setTimeout ),

2
tests/microbench.js
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@ -98,7 +98,7 @@ var clocks_per_sec = 1000000;
var max_iterations = 100;
var clock_threshold = 2000; /* favoring short measuring spans */
var min_n_argument = 1;
var get_clock = os.now;
var get_clock = os.cputime ?? os.now;
function log_one(text, n, ti) {
var ref;