From a444b5eccba68812725a9125bbbc44f23d9538c5 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 9 Apr 2024 08:21:20 +0530
Subject: [PATCH] Only use raw monotonic time on Linux and macOS

---
 tools/utils/clock_with_raw.go    | 18 ++++++++++++++++++
 tools/utils/clock_without_raw.go | 18 ++++++++++++++++++
 tools/utils/misc.go              | 15 ---------------
 3 files changed, 36 insertions(+), 15 deletions(-)
 create mode 100644 tools/utils/clock_with_raw.go
 create mode 100644 tools/utils/clock_without_raw.go

diff --git a/tools/utils/clock_with_raw.go b/tools/utils/clock_with_raw.go
new file mode 100644
index 000000000..934647abd
--- /dev/null
+++ b/tools/utils/clock_with_raw.go
@@ -0,0 +1,18 @@
+//go:build linux || darwin
+
+package utils
+
+import (
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func MonotonicRaw() (time.Time, error) {
+	ts := unix.Timespec{}
+	if err := unix.ClockGettime(unix.CLOCK_MONOTONIC_RAW, &ts); err != nil {
+		return time.Time{}, err
+	}
+	s, ns := ts.Unix()
+	return time.Unix(s, ns), nil
+}
diff --git a/tools/utils/clock_without_raw.go b/tools/utils/clock_without_raw.go
new file mode 100644
index 000000000..2cb7444d5
--- /dev/null
+++ b/tools/utils/clock_without_raw.go
@@ -0,0 +1,18 @@
+//go:build !linux && !darwin
+
+package utils
+
+import (
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func MonotonicRaw() (time.Time, error) {
+	ts := unix.Timespec{}
+	if err := unix.ClockGettime(unix.CLOCK_MONOTONIC, &ts); err != nil {
+		return time.Time{}, err
+	}
+	s, ns := ts.Unix()
+	return time.Unix(s, ns), nil
+}
diff --git a/tools/utils/misc.go b/tools/utils/misc.go
index 579efe397..60c75935c 100644
--- a/tools/utils/misc.go
+++ b/tools/utils/misc.go
@@ -10,11 +10,9 @@ import (
 	"reflect"
 	"runtime"
 	"strconv"
-	"time"
 
 	"golang.org/x/exp/constraints"
 	"golang.org/x/exp/slices"
-	"golang.org/x/sys/unix"
 )
 
 var _ = fmt.Print
@@ -312,16 +310,3 @@ func FunctionName(a any) string {
 	}
 	return ""
 }
-
-func MonotonicRaw() (time.Time, error) {
-	ts := unix.Timespec{}
-	var clock_id int32 = unix.CLOCK_MONOTONIC
-	if runtime.GOOS == "linux" {
-		clock_id = unix.CLOCK_MONOTONIC_RAW
-	}
-	if err := unix.ClockGettime(clock_id, &ts); err != nil {
-		return time.Time{}, err
-	}
-	s, ns := ts.Unix()
-	return time.Unix(s, ns), nil
-}