From 327d364f34de730879f330ea51d8801f5c6bddc9 Mon Sep 17 00:00:00 2001
From: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>
Date: Fri, 2 Aug 2024 16:20:51 +0300
Subject: [PATCH] [#1262] sdnotify: Get rid of go:linkname for nanotime

Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>
---
 pkg/util/sdnotify/clock.go    | 10 ----------
 pkg/util/sdnotify/clock.s     |  2 --
 pkg/util/sdnotify/sdnotify.go |  4 +++-
 3 files changed, 3 insertions(+), 13 deletions(-)
 delete mode 100644 pkg/util/sdnotify/clock.go
 delete mode 100644 pkg/util/sdnotify/clock.s

diff --git a/pkg/util/sdnotify/clock.go b/pkg/util/sdnotify/clock.go
deleted file mode 100644
index f5419d02..00000000
--- a/pkg/util/sdnotify/clock.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package sdnotify
-
-import (
-	// For go:linkname to work.
-	_ "unsafe"
-)
-
-//go:noescape
-//go:linkname nanotime runtime.nanotime
-func nanotime() int64
diff --git a/pkg/util/sdnotify/clock.s b/pkg/util/sdnotify/clock.s
deleted file mode 100644
index ad033ff4..00000000
--- a/pkg/util/sdnotify/clock.s
+++ /dev/null
@@ -1,2 +0,0 @@
-// The file is intentionally empty.
-// It is a workaround for https://github.com/golang/go/issues/15006
diff --git a/pkg/util/sdnotify/sdnotify.go b/pkg/util/sdnotify/sdnotify.go
index 16a3f11c..a3af50b2 100644
--- a/pkg/util/sdnotify/sdnotify.go
+++ b/pkg/util/sdnotify/sdnotify.go
@@ -6,6 +6,7 @@ import (
 	"net"
 	"os"
 	"strings"
+	"time"
 )
 
 const (
@@ -16,6 +17,7 @@ const (
 
 var (
 	socket *net.UnixAddr
+	start  = time.Now()
 
 	errSocketVariableIsNotPresent = errors.New("\"NOTIFY_SOCKET\" environment variable is not present")
 	errSocketIsNotInitialized     = errors.New("socket is not initialized")
@@ -51,7 +53,7 @@ func FlagAndStatus(status string) error {
 		//    must be sent, containing "READY=1".
 		//
 		// For MONOTONIC_USEC format refer to https://www.man7.org/linux/man-pages/man3/sd_notify.3.html
-		status += fmt.Sprintf("\nMONOTONIC_USEC=%d", uint64(nanotime())/1e3 /* microseconds in nanoseconds */)
+		status += fmt.Sprintf("\nMONOTONIC_USEC=%d", uint64(time.Since(start))/1e3 /* microseconds in nanoseconds */)
 	}
 	status += "\nSTATUS=" + strings.TrimSuffix(status, "=1")
 	return Send(status)