From 1ef26e0c092988a9d5729623b589a66e24d2d567 Mon Sep 17 00:00:00 2001
From: Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
Date: Fri, 28 Aug 2020 09:56:51 +0200
Subject: [PATCH] AK: Provide off-switch for dbg() output

---
 AK/LogStream.cpp | 14 +++++++++++++-
 AK/LogStream.h   |  7 +++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/AK/LogStream.cpp b/AK/LogStream.cpp
index 9037f45fb3a..2fead23a5e6 100644
--- a/AK/LogStream.cpp
+++ b/AK/LogStream.cpp
@@ -163,13 +163,25 @@ KernelLogStream::~KernelLogStream()
 
 DebugLogStream::~DebugLogStream()
 {
-    if (!empty()) {
+    if (!empty() && s_enabled) {
         char newline = '\n';
         write(&newline, 1);
         dbgputstr(reinterpret_cast<char*>(data()), size());
     }
 }
 
+void DebugLogStream::set_enabled(bool enabled)
+{
+    s_enabled = enabled;
+}
+
+bool DebugLogStream::is_enabled()
+{
+    return s_enabled;
+}
+
+bool DebugLogStream::s_enabled = true;
+
 #ifndef KERNEL
 StdLogStream::~StdLogStream()
 {
diff --git a/AK/LogStream.h b/AK/LogStream.h
index 1a1a937ad0e..59c81ca1da3 100644
--- a/AK/LogStream.h
+++ b/AK/LogStream.h
@@ -115,6 +115,13 @@ class DebugLogStream final : public BufferedLogStream {
 public:
     DebugLogStream() { }
     virtual ~DebugLogStream() override;
+
+    // DebugLogStream only checks `enabled` and possibly generates output while the destructor runs.
+    static void set_enabled(bool);
+    static bool is_enabled();
+
+private:
+    static bool s_enabled;
 };
 
 #if !defined(KERNEL)