1 files changed, 9 insertions, 1 deletions
diff --git a/base/rand_util.h b/base/rand_util.h
index e6ffe9a..699fc7f 100644
--- a/base/rand_util.h
+++ b/base/rand_util.h
@@ -1,9 +1,10 @@
-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_RAND_UTIL_H_
 #define BASE_RAND_UTIL_H_
+#pragma once
 
 #include "base/basictypes.h"
 
@@ -15,6 +16,13 @@ uint64 RandUint64();
 // Returns a random number between min and max (inclusive). Thread-safe.
 int RandInt(int min, int max);
 
+// Returns a random number in range [0, max).  Thread-safe.
+//
+// Note that this can be used as an adapter for std::random_shuffle():
+// Given a pre-populated |std::vector<int> myvector|, shuffle it as
+//   std::random_shuffle(myvector.begin(), myvector.end(), base::RandGenerator);
+uint64 RandGenerator(uint64 max);
+
 // Returns a random double in range [0, 1). Thread-safe.
 double RandDouble();