Kernel: Switch singletons to use new Singleton class

Fixes #3226
Author: https://github.com/tomuta Commit: f48feae0b2 Pull-request: https://github.com/SerenityOS/serenity/pull/3229 Issue: https://github.com/SerenityOS/serenity/issues/3226 Reviewed-by: https://github.com/awesomekling
2025-06-11 18:20:43 +09:00 · 2020-08-20 09:36:06 -06:00 · 2020-08-20 09:36:06 -06:00 · f48feae0b2 · 2024-07-19 03:23:13 +09:00
commit f48feae0b2
parent 527c8047fe
44 changed files with 184 additions and 146 deletions
--- a/Kernel/Devices/NullDevice.cpp
+++ b/Kernel/Devices/NullDevice.cpp
@ -26,21 +26,25 @@

 #include "NullDevice.h"
 #include <AK/StdLibExtras.h>
+#include <Kernel/Singleton.h>

 namespace Kernel {

-static NullDevice* s_the;
+static auto s_the = make_singleton<NullDevice>();
+
+void NullDevice::initialize()
+{
+    s_the.ensure_instance();
+}

 NullDevice& NullDevice::the()
 {
-    ASSERT(s_the);
    return *s_the;
 }

 NullDevice::NullDevice()
    : CharacterDevice(1, 3)
 {
-    s_the = this;
 }

 NullDevice::~NullDevice()