From 60bffb5f499e50425b31e4ef8a0c6c804ada7d2d Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Fri, 24 Jan 2025 19:58:44 +0200
Subject: [PATCH] LibC: Implement `clock` in terms of `clock_gettime`

This allows clock to "just work" after I update clock_gettime to support
CLOCK_PROCESS_CPUTIME_ID.
---
 userspace/libraries/LibC/time.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/userspace/libraries/LibC/time.cpp b/userspace/libraries/LibC/time.cpp
index 00747d8f..0089baa9 100644
--- a/userspace/libraries/LibC/time.cpp
+++ b/userspace/libraries/LibC/time.cpp
@@ -20,8 +20,11 @@ int nanosleep(const struct timespec* rqtp, struct timespec* rmtp)
 
 clock_t clock(void)
 {
-	dwarnln("TODO: clock");
-	return -1;
+	timespec ts;
+	if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == -1)
+		return -1;
+	return ((uint64_t)ts.tv_sec  * CLOCKS_PER_SEC)
+	     + ((uint64_t)ts.tv_nsec * CLOCKS_PER_SEC / 1'000'000'000);
 }
 
 time_t time(time_t* tloc)