bench: Add logging benchmark

src/bench/logging.cpp

@@ -0,0 +1,48 @@
+// Copyright (c) 2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <logging.h>
+#include <test/util/setup_common.h>
+
+
+static void Logging(benchmark::Bench& bench, const std::vector<const char*>& extra_args, const std::function<void()>& log)
+{
+    TestingSetup test_setup{
+        CBaseChainParams::REGTEST,
+        extra_args,
+    };
+
+    bench.run([&] { log(); });
+}
+
+static void LoggingYoThreadNames(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=1"}, [] { LogPrintf("%s\n", "test"); });
+}
+static void LoggingNoThreadNames(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0"}, [] { LogPrintf("%s\n", "test"); });
+}
+static void LoggingYoCategory(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0", "-debug=net"}, [] { LogPrint(BCLog::NET, "%s\n", "test"); });
+}
+static void LoggingNoCategory(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0", "-debug=0"}, [] { LogPrint(BCLog::NET, "%s\n", "test"); });
+}
+static void LoggingNoFile(benchmark::Bench& bench)
+{
+    Logging(bench, {"-nodebuglogfile", "-debug=1"}, [] {
+        LogPrintf("%s\n", "test");
+        LogPrint(BCLog::NET, "%s\n", "test");
+    });
+}
+
+BENCHMARK(LoggingYoThreadNames);
+BENCHMARK(LoggingNoThreadNames);
+BENCHMARK(LoggingYoCategory);
+BENCHMARK(LoggingNoCategory);
+BENCHMARK(LoggingNoFile);