drd/tests/std_atomic: Add

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13756

drd/tests/std_atomic.cpp

@@ -0,0 +1,56 @@
+/*
+ * Test program for std::atomic<>
+ *
+ * See also https://bugs.kde.org/show_bug.cgi?id=328490.
+ */
+
+#include "../drd.h"
+#include <atomic>
+#include <iostream>
+#include <string>
+#include <pthread.h>
+
+std::atomic<bool> g_b;
+
+void *func1(void *instance)
+{
+  while (!g_b) {
+    timespec delay = { 0, 100 * 1000 * 1000 };
+    nanosleep(&delay, NULL);
+  }
+  return NULL;
+}
+
+void *func2(void *instance)
+{
+  g_b = true;
+  return NULL;
+}
+
+int main(int argc, char* argv[])
+{
+  int err;
+  pthread_t thread1;
+  pthread_t thread2;
+
+  std::cerr << "Started.\n";
+
+  if (argc > 1)
+    DRD_IGNORE_VAR(g_b);
+
+  err = pthread_create(&thread1, NULL, &func1, NULL);
+  if (err != 0)
+    throw std::string("failed to create a thread.");
+  err = pthread_create(&thread2, NULL, &func2, NULL);
+  if (err != 0)
+    throw std::string("failed to create a thread.");
+
+  err = pthread_join(thread1, NULL);
+  if (err != 0)
+    throw std::string("Thread::join(): failed to join.");
+  err = pthread_join(thread2, NULL);
+  if (err != 0)
+    throw std::string("Thread::join(): failed to join.");
+
+  std::cerr << "Done.\n";
+}