X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=folly%2Ftest%2Ffunction_benchmark%2Fmain.cpp;h=7b12aba339b5d88f1f29256af2b96c4666dee8ab;hb=717229ecf385ee10a91d6c2af859e8550df84531;hp=20d5b7ddff4a0f9fa89b6b4cdca246f17a3e1848;hpb=ed8c80a0e0988e4ce687f51ca832a00e4a6b7930;p=folly.git

diff --git a/folly/test/function_benchmark/main.cpp b/folly/test/function_benchmark/main.cpp
index 20d5b7dd..7b12aba3 100644
--- a/folly/test/function_benchmark/main.cpp
+++ b/folly/test/function_benchmark/main.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Facebook, Inc.
+ * Copyright 2011-present Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,6 @@
 #include <folly/ScopeGuard.h>
 #include <folly/portability/GFlags.h>
 
-using folly::ScopeGuard;
 using folly::makeGuard;
 
 // Declare the bm_max_iters flag from folly/Benchmark.cpp
@@ -158,7 +157,8 @@ BENCHMARK(std_bind_direct_invoke, iters) {
 BENCHMARK(scope_guard_std_function, iters) {
   std::function<void()> fn(doNothing);
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard(fn);
+    auto g = makeGuard(fn);
+    (void)g;
   }
 }
 
@@ -166,7 +166,8 @@ BENCHMARK(scope_guard_std_function, iters) {
 // but create the ScopeGuard with an rvalue to a std::function
 BENCHMARK(scope_guard_std_function_rvalue, iters) {
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard(std::function<void()>(doNothing));
+    auto g = makeGuard(std::function<void()>(doNothing));
+    (void)g;
   }
 }
 
@@ -174,28 +175,32 @@ BENCHMARK(scope_guard_std_function_rvalue, iters) {
 // but create the ScopeGuard with an rvalue to a folly::Function
 BENCHMARK(scope_guard_Function_rvalue, iters) {
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard(folly::Function<void()>(doNothing));
+    auto g = makeGuard(folly::Function<void()>(doNothing));
+    (void)g;
   }
 }
 
 // Using ScopeGuard to invoke a function pointer
 BENCHMARK(scope_guard_fn_ptr, iters) {
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard(doNothing);
+    auto g = makeGuard(doNothing);
+    (void)g;
   }
 }
 
 // Using ScopeGuard to invoke a lambda that does nothing
 BENCHMARK(scope_guard_lambda_noop, iters) {
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard([] {});
+    auto g = makeGuard([] {});
+    (void)g;
   }
 }
 
 // Using ScopeGuard to invoke a lambda that invokes a function
 BENCHMARK(scope_guard_lambda_function, iters) {
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard([] { doNothing(); });
+    auto g = makeGuard([] { doNothing(); });
+    (void)g;
   }
 }
 
@@ -203,7 +208,7 @@ BENCHMARK(scope_guard_lambda_function, iters) {
 BENCHMARK(scope_guard_lambda_local_var, iters) {
   uint32_t count = 0;
   for (size_t n = 0; n < iters; ++n) {
-    ScopeGuard g = makeGuard([&] {
+    auto g = makeGuard([&] {
       // Increment count if n is odd.  Without this conditional check
       // (i.e., if we just increment count each time through the loop),
       // gcc is smart enough to optimize the entire loop away, and just set
@@ -212,6 +217,7 @@ BENCHMARK(scope_guard_lambda_local_var, iters) {
         ++count;
       }
     });
+    (void)g;
   }
 
   // Check that the value of count is what we expect.