libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8

test/thread/thread.condition/thread.condition.condvar/wait.pass.cpp

@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <condition_variable>
+
+// class condition_variable;
+
+// void wait(unique_lock<mutex>& lock);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+void f()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    while (test2 == 0)
+        cv.wait(lk);
+    assert(test2 != 0);
+}
+
+int main()
+{
+    std::unique_lock<std::mutex>lk(mut);
+    std::thread t(f);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 != 0);
+    test2 = 1;
+    lk.unlock();
+    cv.notify_one();
+    t.join();
+}