Merge pull request #10853 from Chocobo1/limits

Adjust open file descriptor limit on startup

src/app/main.cpp

@@ -33,6 +33,9 @@
 #include <cstdlib>
 #include <memory>
 
+#if defined(Q_OS_UNIX)
+#include <sys/resource.h>
+#endif
 #if !defined Q_OS_WIN && !defined Q_OS_HAIKU
 #include <unistd.h>
 #elif defined Q_OS_WIN && defined DISABLE_GUI
@@ -116,9 +119,17 @@ void displayBadArgMessage(const QString &message);
 void showSplashScreen();
 #endif  // DISABLE_GUI
 
+#if defined(Q_OS_UNIX)
+void adjustFileDescriptorLimit();
+#endif
+
 // Main
 int main(int argc, char *argv[])
 {
+#if defined(Q_OS_UNIX)
+    adjustFileDescriptorLimit();
+#endif
+
     // We must save it here because QApplication constructor may change it
     bool isOneArg = (argc == 2);
 
@@ -397,3 +408,16 @@ bool userAgreesWithLegalNotice()
 
     return false;
 }
+
+#if defined(Q_OS_UNIX)
+void adjustFileDescriptorLimit()
+{
+    rlimit limit {};
+
+    if (getrlimit(RLIMIT_NOFILE, &limit) != 0)
+        return;
+
+    limit.rlim_cur = limit.rlim_max;
+    setrlimit(RLIMIT_NOFILE, &limit);
+}
+#endif