1 files changed, 16 insertions, 0 deletions
diff --git a/absl/time/duration_benchmark.cc b/absl/time/duration_benchmark.cc
index 83a836c8..56820f37 100644
--- a/absl/time/duration_benchmark.cc
+++ b/absl/time/duration_benchmark.cc
@@ -18,9 +18,14 @@
 #include <string>
 
 #include "absl/base/attributes.h"
+#include "absl/flags/flag.h"
 #include "absl/time/time.h"
 #include "benchmark/benchmark.h"
 
+ABSL_FLAG(absl::Duration, absl_duration_flag_for_benchmark,
+          absl::Milliseconds(1),
+          "Flag to use for benchmarking duration flag access speed.");
+
 namespace {
 
 //
@@ -425,4 +430,15 @@ void BM_Duration_ParseDuration(benchmark::State& state) {
 }
 BENCHMARK(BM_Duration_ParseDuration)->DenseRange(0, kNumDurations - 1);
 
+//
+// Flag access
+//
+void BM_Duration_GetFlag(benchmark::State& state) {
+  while (state.KeepRunning()) {
+    benchmark::DoNotOptimize(
+        absl::GetFlag(FLAGS_absl_duration_flag_for_benchmark));
+  }
+}
+BENCHMARK(BM_Duration_GetFlag);
+
 }  // namespace