Merge pull request #18 from Progmasoft/build/catch3-identity

Give Catch3 its own build names and headers

1 files changed, 54 insertions, 0 deletions

diff --git a/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp b/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp
new file mode 100644
index 00000000..8967b12c
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp
@@ -0,0 +1,54 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+
+#include <Progmasoft/Catch3/Benchmark/Benchmark.hpp>
+
+#include <algorithm>
+#include <chrono>
+#include <cmath>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+
+            Environment measure_environment_default() {
+                return Detail::measure_environment<default_clock>();
+            }
+
+            ExecutionPlan prepare_default( const IConfig& cfg,
+                                           Environment env,
+                                           BenchmarkFunction&& fun ) {
+                // This mirrors Benchmark::prepare<default_clock>(), but with the
+                // clock fixed so it is instantiated once here in the library.
+                auto min_time = env.clock_resolution.mean * Detail::minimum_ticks;
+                auto run_time = std::max(
+                    min_time,
+                    std::chrono::duration_cast<decltype( min_time )>(
+                        cfg.benchmarkWarmupTime() ) );
+                auto&& test = Detail::run_for_at_least<default_clock>(
+                    std::chrono::duration_cast<IDuration>( run_time ), 1, fun );
+                int new_iters = static_cast<int>(
+                    std::ceil( min_time * test.iterations / test.elapsed ) );
+                return { new_iters,
+                         test.elapsed / test.iterations * new_iters *
+                             cfg.benchmarkSamples(),
+                         CATCH_MOVE( fun ),
+                         std::chrono::duration_cast<FDuration>(
+                             cfg.benchmarkWarmupTime() ),
+                         Detail::warmup_iterations };
+            }
+
+            std::vector<FDuration> run_plan_default( ExecutionPlan const& plan,
+                                                     const IConfig& cfg,
+                                                     Environment env ) {
+                return plan.run<default_clock>( cfg, env );
+            }
+
+        } // namespace Detail
+    } // namespace Benchmark
+} // namespace Catch