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diff --git a/src/util/benchmark.h b/src/util/benchmark.h
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+/*
+     This file is part of GNUnet.
+     Copyright (C) 2018 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     Affero General Public License for more details.
+    
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file util/benchmark.h
+ * @brief benchmarking for various operations
+ * @author Florian Dold <flo@dold.me>
+ */
+
+#ifndef BENCHMARK_H_
+#define BENCHMARK_H_
+
+#include "gnunet_time_lib.h"
+
+/**
+ * Thread-local struct for benchmarking data.
+ */
+struct BenchmarkData {
+  /**
+   * Number of eddsa_sign operations.
+   */
+  uint64_t eddsa_sign_count;
+
+  /**
+   * Time spent in eddsa_sign.
+   */
+  struct GNUNET_TIME_Relative eddsa_sign_time;
+};
+
+
+/**
+ * Acquire the benchmark data for the current thread, allocate if necessary.
+ * Installs handler to collect the benchmark data on thread termination.
+ *
+ * @return benchmark data for the current thread
+ */
+struct BenchmarkData *
+get_benchmark_data (void);
+
+#endif  /* BENCHMARK_H_ */