TensorFlow: Initial commit of TensorFlow library.

TensorFlow is an open source software library for numerical computation
using data flow graphs.

Base CL: 107276108

1 files changed, 42 insertions, 0 deletions

diff --git a/tensorflow/core/lib/core/notification.h b/tensorflow/core/lib/core/notification.h
new file mode 100644
index 0000000000..071e24285a
--- /dev/null
+++ b/tensorflow/core/lib/core/notification.h
@@ -0,0 +1,42 @@
+#ifndef TENSORFLOW_UTIL_NOTIFICATION_H_
+#define TENSORFLOW_UTIL_NOTIFICATION_H_
+
+#include <assert.h>
+
+#include "tensorflow/core/platform/port.h"
+
+namespace tensorflow {
+
+class Notification {
+ public:
+  Notification() : notified_(false) {}
+  ~Notification() {}
+
+  void Notify() {
+    mutex_lock l(mu_);
+    assert(!notified_);
+    notified_ = true;
+    cv_.notify_all();
+  }
+
+  bool HasBeenNotified() {
+    mutex_lock l(mu_);
+    return notified_;
+  }
+
+  void WaitForNotification() {
+    mutex_lock l(mu_);
+    while (!notified_) {
+      cv_.wait(l);
+    }
+  }
+
+ private:
+  mutex mu_;
+  condition_variable cv_;
+  bool notified_;
+};
+
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_UTIL_NOTIFICATION_H_