refactored threading-related classes, code broken

src/concurrency/Lock.cpp

@@ -0,0 +1,23 @@
+#include "Lock.h"
+#include <cassert>
+
+namespace concurrency {
+
+Lock::Lock()
+{
+    handle = xSemaphoreCreateBinary();
+    assert(handle);
+    assert(xSemaphoreGive(handle));
+}
+
+void Lock::lock()
+{
+    assert(xSemaphoreTake(handle, portMAX_DELAY));
+}
+
+void Lock::unlock()
+{
+    assert(xSemaphoreGive(handle));
+}
+
+} // namespace concurrency