fix: improve error messaging when pgrep fails streamer mode detection (#5321)

When launching pgrep times out, a timeout message is now posted instead of the default "pgrep is not installed" error.

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Minor: Added context menu action to toggle visibility of offline tabs. (#5318)
 - Minor: Report sub duration for more multi-month gift cases. (#5319)
+- Minor: Improved error reporting for the automatic streamer mode detection on Linux and macOS. (#5321)
 - Bugfix: Fixed a crash that could occur on Wayland when using the image uploader. (#5314)
 - Bugfix: Fixed split tooltip getting stuck in some cases. (#5309)
 - Bugfix: Fixed the version string not showing up as expected in Finder on macOS. (#5311)

src/singletons/StreamerMode.cpp

@@ -51,6 +51,9 @@ const QStringList &broadcastingBinaries()
 bool isBroadcasterSoftwareActive()
 {
 #if defined(Q_OS_LINUX) || defined(Q_OS_MACOS)
+    static bool shouldShowTimeoutWarning = true;
+    static bool shouldShowWarning = true;
+
     QProcess p;
     p.start("pgrep", {"-xi", broadcastingBinaries().join("|")},
             QIODevice::NotOpen);
@@ -62,20 +65,46 @@ bool isBroadcasterSoftwareActive()
 
     // Fallback to false and showing a warning
 
-    static bool shouldShowWarning = true;
+    switch (p.error())
+    {
+        case QProcess::Timedout: {
+            qCWarning(chatterinoStreamerMode) << "pgrep execution timed out!";
+            if (shouldShowTimeoutWarning)
+            {
+                shouldShowTimeoutWarning = false;
+
+                postToThread([] {
+                    getApp()->twitch->addGlobalSystemMessage(
+                        "Streamer Mode is set to Automatic, but pgrep timed "
+                        "out. This can happen if your system lagged at the "
+                        "wrong moment. If Streamer Mode continues to not work, "
+                        "you can manually set it to Enabled or Disabled in the "
+                        "Settings.");
+                });
+            }
+        }
+        break;
+
+        default: {
+            qCWarning(chatterinoStreamerMode)
+                << "pgrep execution failed:" << p.error();
+
             if (shouldShowWarning)
             {
                 shouldShowWarning = false;
 
                 postToThread([] {
                     getApp()->twitch->addGlobalSystemMessage(
-                "Streamer Mode is set to Automatic, but pgrep is missing. "
+                        "Streamer Mode is set to Automatic, but pgrep is "
+                        "missing. "
                         "Install it to fix the issue or set Streamer Mode to "
                         "Enabled or Disabled in the Settings.");
                 });
             }
+        }
+        break;
+    }
 
-    qCWarning(chatterinoStreamerMode) << "pgrep execution timed out!";
     return false;
 #elif defined(Q_OS_WIN)
     if (!IsWindowsVistaOrGreater())