1 files changed, 33 insertions, 0 deletions
diff --git a/tensorflow/core/platform/default/mutex.h b/tensorflow/core/platform/default/mutex.h
new file mode 100644
index 0000000000..b26b418e1b
--- /dev/null
+++ b/tensorflow/core/platform/default/mutex.h
@@ -0,0 +1,33 @@
+#ifndef TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_
+#define TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_
+
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+
+namespace tensorflow {
+
+enum LinkerInitialized { LINKER_INITIALIZED };
+
+// A class that wraps around the std::mutex implementation, only adding an
+// additional LinkerInitialized constructor interface.
+class mutex : public std::mutex {
+ public:
+  mutex() {}
+  // The default implementation of std::mutex is safe to use after the linker
+  // initializations
+  explicit mutex(LinkerInitialized x) {}
+};
+
+using std::condition_variable;
+typedef std::unique_lock<std::mutex> mutex_lock;
+
+inline ConditionResult WaitForMilliseconds(mutex_lock* mu,
+                                           condition_variable* cv, int64 ms) {
+  std::cv_status s = cv->wait_for(*mu, std::chrono::milliseconds(ms));
+  return (s == std::cv_status::timeout) ? kCond_Timeout : kCond_MaybeNotified;
+}
+
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_PLATFORM_DEFAULT_MUTEX_H_