SERVER-42261 faster generic args predicates

1 files changed, 78 insertions, 0 deletions

diff --git a/src/mongo/db/commands_bm.cpp b/src/mongo/db/commands_bm.cpp
new file mode 100644
index 00000000000..82feaaf60f6
--- /dev/null
+++ b/src/mongo/db/commands_bm.cpp
@@ -0,0 +1,78 @@
+/**
+ *    Copyright (C) 2019-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    This program 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
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the Server Side Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#include "mongo/platform/basic.h"
+
+#include <benchmark/benchmark.h>
+
+#include "mongo/base/string_data.h"
+#include "mongo/db/command_generic_argument.h"
+
+namespace mongo {
+namespace {
+
+static std::vector<std::string> keys{
+    "a",  // short not found
+    "CrazyFieldDeliberatelyNotFound",
+    "$db",
+    "$audit",
+    "lsid",
+    "writeConcern",
+    "",
+};
+
+void BM_IsGeneric(benchmark::State& state) {
+    const auto& key = keys[state.range()];
+    state.SetLabel(key.c_str());
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(mongo::isGenericArgument(key));
+    }
+}
+void BM_IsRequestStripArgument(benchmark::State& state) {
+    const auto& key = keys[state.range()];
+    state.SetLabel(key.c_str());
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(mongo::isRequestStripArgument(key));
+    }
+}
+
+void BM_IsReplyStripArgument(benchmark::State& state) {
+    const auto& key = keys[state.range()];
+    state.SetLabel(key.c_str());
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(mongo::isReplyStripArgument(key));
+    }
+}
+
+BENCHMARK(BM_IsGeneric)->DenseRange(0, keys.size() - 1);
+BENCHMARK(BM_IsRequestStripArgument)->DenseRange(0, keys.size() - 1);
+BENCHMARK(BM_IsReplyStripArgument)->DenseRange(0, keys.size() - 1);
+
+}  // namespace
+}  // namespace mongo