From 001675dced1b7b751d1db4f0d6490776c613df2f Mon Sep 17 00:00:00 2001
From: yzct12345 <87620833+yzct12345@users.noreply.github.com>
Date: Fri, 13 Aug 2021 18:39:45 +0000
Subject: logging: Simplify and make thread-safe

This simplifies the logging system.

This also fixes some lost messages on startup.

The simplification is simple. I removed unused functions and moved most things in the .h to the .cpp. I replaced the unnecessary linked list with its contents laid out as three member variables. Anything that went through the linked list now directly accesses the backends. Generic functions are replaced with those for each specific use case and there aren't many. This change increases coupling but we gain back more KISS and encapsulation.

With those changes it was easy to make it thread-safe. I just removed the mutex and turned a boolean atomic. I was planning to use this thread-safety in my next PR about stacktraces. It was actually async-signal-safety at first but I ended up using a different approach. Anyway getting rid of the linked list is important for that because have the list of backends constantly changing complicates things.
---
 src/yuzu/debugger/console.cpp | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

(limited to 'src/yuzu/debugger/console.cpp')

diff --git a/src/yuzu/debugger/console.cpp b/src/yuzu/debugger/console.cpp
index 22ca1285d..f89ea8ea7 100644
--- a/src/yuzu/debugger/console.cpp
+++ b/src/yuzu/debugger/console.cpp
@@ -21,6 +21,7 @@ void ToggleConsole() {
         console_shown = UISettings::values.show_console.GetValue();
     }
 
+    using namespace Common::Log;
 #if defined(_WIN32) && !defined(_DEBUG)
     FILE* temp;
     if (UISettings::values.show_console) {
@@ -29,24 +30,20 @@ void ToggleConsole() {
             freopen_s(&temp, "CONIN$", "r", stdin);
             freopen_s(&temp, "CONOUT$", "w", stdout);
             freopen_s(&temp, "CONOUT$", "w", stderr);
-            Common::Log::AddBackend(std::make_unique<Common::Log::ColorConsoleBackend>());
+            SetColorConsoleBackendEnabled(true);
         }
     } else {
         if (FreeConsole()) {
             // In order to close the console, we have to also detach the streams on it.
             // Just redirect them to NUL if there is no console window
-            Common::Log::RemoveBackend(Common::Log::ColorConsoleBackend::Name());
+            SetColorConsoleBackendEnabled(false);
             freopen_s(&temp, "NUL", "r", stdin);
             freopen_s(&temp, "NUL", "w", stdout);
             freopen_s(&temp, "NUL", "w", stderr);
         }
     }
 #else
-    if (UISettings::values.show_console) {
-        Common::Log::AddBackend(std::make_unique<Common::Log::ColorConsoleBackend>());
-    } else {
-        Common::Log::RemoveBackend(Common::Log::ColorConsoleBackend::Name());
-    }
+    SetColorConsoleBackendEnabled(UISettings::values.show_console.GetValue());
 #endif
 }
 } // namespace Debugger
-- 
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