1 files changed, 14 insertions, 5 deletions
diff --git a/checks/bench.cpp b/checks/bench.cpp
index 631bf8476..e733c75ec 100644
--- a/checks/bench.cpp
+++ b/checks/bench.cpp
@@ -9,7 +9,10 @@
 #include <botan/engine.h>
 #include <botan/parsing.h>
 #include <botan/symkey.h>
-#include <botan/time.h>
+
+#include <chrono>
+
+typedef std::chrono::high_resolution_clock benchmark_clock;
 
 #include "common.h"
 #include "bench.h"
@@ -198,17 +201,23 @@ bool bench_algo(const std::string& algo,
          Botan::Pipe pipe(filt, new Botan::BitBucket);
          pipe.start_msg();
 
-         const u64bit start = Botan::get_nanoseconds_clock();
-         u64bit nanoseconds_used = 0;
+         std::chrono::nanoseconds max_time(nanoseconds_max);
+         std::chrono::nanoseconds time_used(0);
+
+         auto start = benchmark_clock::now();
+
          u64bit reps = 0;
 
-         while(nanoseconds_used < nanoseconds_max)
+         while(time_used < max_time)
             {
             pipe.write(&buf[0], buf.size());
             ++reps;
-            nanoseconds_used = Botan::get_nanoseconds_clock() - start;
+            time_used = benchmark_clock::now() - start;
             }
 
+         u64bit nanoseconds_used =
+            std::chrono::duration_cast<std::chrono::nanoseconds>(time_used).count();
+
          double mbytes_per_second =
             (953.67 * (buf.size() * reps)) / nanoseconds_used;