1 files changed, 27 insertions, 0 deletions
diff --git a/tests32/test10.cpp b/tests32/test10.cpp
new file mode 100644
index 00000000..f3c61316
--- /dev/null
+++ b/tests32/test10.cpp
@@ -0,0 +1,27 @@
+// using atomic as a lock
+#include <iostream>       // std::cout
+#include <atomic>         // std::atomic
+#include <thread>         // std::thread
+#include <vector>         // std::vector
+#include <sstream>        // std::stringstream
+
+std::atomic<bool> lock_stream[10];
+std::stringstream stream;
+
+void append_number(int x) {
+  while (lock_stream[x].load()) {}
+  stream << "thread #" << x << '\n';
+  if (x != 9) lock_stream[x + 1].store(false);
+}
+
+int main ()
+{
+  std::vector<std::thread> threads;
+  for (int i = 0; i < 10; ++i) lock_stream[i].store(true);
+  for (int i=0; i<10; ++i) threads.push_back(std::thread(append_number,i));
+  lock_stream[0].store(false);
+  for (auto& th : threads) th.join();
+
+  std::cout << stream.str();
+  return 0;
+}