Index: cc/surfaces/local_surface_id_allocator.h |
diff --git a/cc/surfaces/local_surface_id_allocator.h b/cc/surfaces/local_surface_id_allocator.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1e4b1b910cda27db3a55a396ffe035b7b803e53d |
--- /dev/null |
+++ b/cc/surfaces/local_surface_id_allocator.h |
@@ -0,0 +1,34 @@ |
+// Copyright 2017 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 CC_SURFACES_LOCAL_SURFACE_ID_ALLOCATOR_H_ |
+#define CC_SURFACES_LOCAL_SURFACE_ID_ALLOCATOR_H_ |
+ |
+#include <stdint.h> |
+ |
+#include "base/macros.h" |
+#include "cc/surfaces/surface_id.h" |
+#include "cc/surfaces/surfaces_export.h" |
+ |
+namespace cc { |
+ |
+// This is a helper class for generating local surface IDs for a single |
+// FrameSink. This is not threadsafe, to use from multiple threads wrap this |
+// class in a mutex. |
+class CC_SURFACES_EXPORT LocalSurfaceIdAllocator { |
+ public: |
+ LocalSurfaceIdAllocator(); |
+ ~LocalSurfaceIdAllocator(); |
+ |
+ LocalSurfaceId GenerateId(); |
+ |
+ private: |
+ uint32_t next_id_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(LocalSurfaceIdAllocator); |
+}; |
+ |
+} // namespace cc |
+ |
+#endif // CC_SURFACES_LOCAL_SURFACE_ID_ALLOCATOR_H_ |