Restyle

cores/rp2040/LWIPMutex.cpp

@@ -0,0 +1,46 @@
+/*
+    WiFiMutex.h - Ensure the timer-driven sys_check_timeouts doesn't
+                  get executed while we're in the user-level TCP stack.
+    Copyright (c) 2022 Earle F. Philhower, III.  All rights reserved.
+
+    Implements the API defined by the Arduino WiFiNINA library,
+    copyright (c) 2018 Arduino SA. All rights reserved.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include <Arduino.h>
+#include <LWIPMutex.h>
+
+auto_init_recursive_mutex(__mtxLWIP);
+int LWIPMutex::_ref = 0;
+extern "C" volatile bool __inLWIP = false;
+
+LWIPMutex::LWIPMutex() {
+    noInterrupts();
+    recursive_mutex_enter_blocking(&__mtxLWIP);
+    __inLWIP = true;
+    _ref++;
+    interrupts();
+}
+
+LWIPMutex::~LWIPMutex() {
+    noInterrupts();
+    if (0 == --_ref) {
+        __inLWIP = false;
+    }
+    recursive_mutex_exit(&__mtxLWIP);
+    interrupts();
+}