Index: uspace/lib/cpp/src/condition_variable.cpp
===================================================================
--- uspace/lib/cpp/src/condition_variable.cpp	(revision 78d739d3d1485b232e1c906ade4120a538866dbf)
+++ uspace/lib/cpp/src/condition_variable.cpp	(revision 78d739d3d1485b232e1c906ade4120a538866dbf)
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018 Jaroslav Jindrak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <condition_variable>
+
+namespace std
+{
+    condition_variable::condition_variable()
+        : cv_{}
+    {
+        aux::threading::condvar::init(cv_);
+    }
+
+    condition_variable::~condition_variable()
+    { /* DUMMY BODY */ }
+
+    void condition_variable::notify_one() noexcept
+    {
+        aux::threading::condvar::signal(cv_);
+    }
+
+    void condition_variable::notify_all() noexcept
+    {
+        aux::threading::condvar::broadcast(cv_);
+    }
+
+    void condition_variable::wait(unique_lock<mutex>& lock)
+    {
+        if (lock.owns_lock())
+            aux::threading::condvar::wait(cv_, *lock.mutex()->native_handle());
+    }
+
+    condition_variable::native_handle_type condition_variable::native_handle()
+    {
+        return &cv_;
+    }
+
+    condition_variable_any::condition_variable_any()
+        : cv_{}
+    {
+        aux::threading::condvar::init(cv_);
+    }
+
+    condition_variable_any::~condition_variable_any()
+    { /* DUMMY BODY */ }
+
+    void condition_variable_any::notify_one() noexcept
+    {
+        aux::threading::condvar::signal(cv_);
+    }
+
+    void condition_variable_any::notify_all() noexcept
+    {
+        aux::threading::condvar::broadcast(cv_);
+    }
+
+    condition_variable_any::native_handle_type condition_variable_any::native_handle()
+    {
+        return &cv_;
+    }
+
+    void notify_all_at_thread_exit(condition_variable&, unique_lock<mutex>&)
+    {
+        // TODO: implement
+    }
+}