1 files changed, 32 insertions, 0 deletions
diff --git a/xpcom/string/nsStringStats.h b/xpcom/string/nsStringStats.h
new file mode 100644
index 0000000000..a38304c2b7
--- /dev/null
+++ b/xpcom/string/nsStringStats.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsStringStats_h
+#define nsStringStats_h
+
+#include "mozilla/Atomics.h"
+
+class nsStringStats {
+ public:
+  nsStringStats() = default;
+
+  ~nsStringStats();
+
+  using AtomicInt = mozilla::Atomic<int32_t, mozilla::SequentiallyConsistent>;
+
+  AtomicInt mAllocCount{0};
+  AtomicInt mReallocCount{0};
+  AtomicInt mFreeCount{0};
+  AtomicInt mShareCount{0};
+  AtomicInt mAdoptCount{0};
+  AtomicInt mAdoptFreeCount{0};
+};
+
+extern nsStringStats gStringStats;
+
+#define STRING_STAT_INCREMENT(_s) (gStringStats.m##_s##Count)++
+
+#endif  // nsStringStats_h