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diff --git a/tools/fuzzing/nyx/Nyx.h b/tools/fuzzing/nyx/Nyx.h
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+/* -*- 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 mozilla_fuzzing_Nyx_h
+#define mozilla_fuzzing_Nyx_h
+
+#include <stdint.h>
+#include <atomic>
+#include <list>
+
+#ifndef NYX_DISALLOW_COPY_AND_ASSIGN
+# define NYX_DISALLOW_COPY_AND_ASSIGN(T) \
+ T(const T&); \
+ void operator=(const T&)
+#endif
+
+namespace mozilla {
+
+class MallocAllocPolicy;
+template <class T, size_t MinInlineCapacity, class AllocPolicy>
+class Vector;
+
+namespace fuzzing {
+
+class Nyx {
+ public:
+ static Nyx& instance();
+
+ void start(void);
+ bool started(void);
+ bool is_enabled(const char* identifier);
+ bool is_replay();
+ uint32_t get_data(uint8_t* data, uint32_t size);
+ void release(uint32_t iterations = 1);
+ void handle_event(const char* type, const char* file, int line,
+ const char* reason);
+
+ private:
+ std::atomic<bool> mInited;
+
+ std::atomic<bool> mReplayMode;
+ std::list<Vector<uint8_t, 0, MallocAllocPolicy>*> mReplayBuffers;
+
+ Nyx();
+ NYX_DISALLOW_COPY_AND_ASSIGN(Nyx);
+};
+
+} // namespace fuzzing
+} // namespace mozilla
+
+#endif /* mozilla_fuzzing_Nyx_h */