Kernel: Move ScopedCritical.cpp to Kernel base directory

This file does not contain any architecture specific implementations,
so we can move it to the Kernel base directory. Also update the relevant
include paths.

1 files changed, 51 insertions, 0 deletions

diff --git a/Kernel/ScopedCritical.cpp b/Kernel/ScopedCritical.cpp
new file mode 100644
index 0000000000..c97478c6d5
--- /dev/null
+++ b/Kernel/ScopedCritical.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <Kernel/ScopedCritical.h>
+
+#include <Kernel/Arch/Processor.h>
+
+namespace Kernel {
+
+ScopedCritical::ScopedCritical()
+{
+    enter();
+}
+
+ScopedCritical::~ScopedCritical()
+{
+    if (m_valid)
+        leave();
+}
+
+ScopedCritical::ScopedCritical(ScopedCritical&& from)
+    : m_valid(exchange(from.m_valid, false))
+{
+}
+
+ScopedCritical& ScopedCritical::operator=(ScopedCritical&& from)
+{
+    if (&from != this) {
+        m_valid = exchange(from.m_valid, false);
+    }
+    return *this;
+}
+
+void ScopedCritical::leave()
+{
+    VERIFY(m_valid);
+    m_valid = false;
+    Processor::leave_critical();
+}
+
+void ScopedCritical::enter()
+{
+    VERIFY(!m_valid);
+    m_valid = true;
+    Processor::enter_critical();
+}
+
+}