folly/gen/test/Bench.h

   1 /*
   2  * Copyright 2014 Facebook, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *   http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef FOLLY_GEN_BENCH_H_
  18 #define FOLLY_GEN_BENCH_H_
  19
  20 #include "folly/Benchmark.h"
  21
  22 #define BENCH_GEN_IMPL(gen, prefix)                         \
  23 static bool FB_ANONYMOUS_VARIABLE(benchGen) = (             \
  24   ::folly::addBenchmark(__FILE__, prefix FB_STRINGIZE(gen), \
  25     [](unsigned iters){                                     \
  26       const unsigned num = iters;                           \
  27       while (iters--) {                                     \
  28         folly::doNotOptimizeAway(gen);                      \
  29       }                                                     \
  30       return num;                                           \
  31     }), true)
  32 #define BENCH_GEN(gen) BENCH_GEN_IMPL(gen, "")
  33 #define BENCH_GEN_REL(gen) BENCH_GEN_IMPL(gen, "%")
  34
  35 #endif