import RT-Thread@9217865c without bsp, libcpu and components/net

components/libc/cplusplus/cpp11/gcc/condition_variable.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-04-27     flybreak     the first version.
+ */
+
+#include "condition_variable"
+
+namespace std
+{
+    void condition_variable::wait(unique_lock<mutex>& lock)
+    {
+        int err = pthread_cond_wait(&_m_cond, lock.mutex()->native_handle());
+
+        if (err)
+        {
+            throw_system_error(err, "condition_variable::wait: failed to wait on a condition");
+        }
+    }
+
+    void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk)
+    {
+        // TLS currently not available
+        mutex* mut = lk.release();
+        mut->unlock();
+        cond.notify_all();
+    }
+
+
+} // namespace std