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diff --git a/src/lib/misc/benchmark/benchmark.h b/src/lib/misc/benchmark/benchmark.h
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+++ b/src/lib/misc/benchmark/benchmark.h
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+/*
+* Runtime benchmarking
+* (C) 2008-2009 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_RUNTIME_BENCHMARK_H__
+#define BOTAN_RUNTIME_BENCHMARK_H__
+
+#include <botan/rng.h>
+#include <map>
+#include <string>
+#include <chrono>
+
+namespace Botan {
+
+/**
+* Algorithm benchmark
+* @param name the name of the algorithm to test (cipher, hash, or MAC)
+* @param af the algorithm factory used to create objects
+* @param rng the rng to use to generate random inputs
+* @param milliseconds total time for the benchmark to run
+* @param buf_size size of buffer to benchmark against, in KiB
+* @return results a map from provider to speed in mebibytes per second
+*/
+std::map<std::string, double>
+BOTAN_DLL algorithm_benchmark(const std::string& name,
+                              RandomNumberGenerator& rng,
+                              std::chrono::milliseconds milliseconds,
+                              size_t buf_size);
+
+}
+
+#endif