test/cpp/microbenchmarks/bm_byte_buffer.cc

   1 /*
   2  *
   3  * Copyright 2015 gRPC authors.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  */
  18
  19 /* This benchmark exists to show that byte-buffer copy is size-independent */
  20
  21 #include <memory>
  22
  23 #include <benchmark/benchmark.h>
  24 #include <grpcpp/impl/grpc_library.h>
  25 #include <grpcpp/support/byte_buffer.h>
  26 #include "test/cpp/microbenchmarks/helpers.h"
  27 #include "test/cpp/util/test_config.h"
  28
  29 namespace grpc {
  30 namespace testing {
  31
  32 static void BM_ByteBuffer_Copy(benchmark::State& state) {
  33   int num_slices = state.range(0);
  34   size_t slice_size = state.range(1);
  35   std::vector<grpc::Slice> slices;
  36   while (num_slices > 0) {
  37     num_slices--;
  38     std::unique_ptr<char[]> buf(new char[slice_size]);
  39     memset(buf.get(), 0, slice_size);
  40     slices.emplace_back(buf.get(), slice_size);
  41   }
  42   grpc::ByteBuffer bb(slices.data(), num_slices);
  43   while (state.KeepRunning()) {
  44     grpc::ByteBuffer cc(bb);
  45   }
  46 }
  47 BENCHMARK(BM_ByteBuffer_Copy)->Ranges({{1, 64}, {1, 1024 * 1024}});
  48
  49 static void BM_ByteBufferReader_Next(benchmark::State& state) {
  50   const int num_slices = state.range(0);
  51   constexpr size_t kSliceSize = 16;
  52   std::vector<grpc_slice> slices;
  53   for (int i = 0; i < num_slices; ++i) {
  54     std::unique_ptr<char[]> buf(new char[kSliceSize]);
  55     slices.emplace_back(g_core_codegen_interface->grpc_slice_from_copied_buffer(
  56         buf.get(), kSliceSize));
  57   }
  58   grpc_byte_buffer* bb = g_core_codegen_interface->grpc_raw_byte_buffer_create(
  59       slices.data(), num_slices);
  60   grpc_byte_buffer_reader reader;
  61   GPR_ASSERT(
  62       g_core_codegen_interface->grpc_byte_buffer_reader_init(&reader, bb));
  63   while (state.KeepRunning()) {
  64     grpc_slice* slice;
  65     if (GPR_UNLIKELY(!g_core_codegen_interface->grpc_byte_buffer_reader_peek(
  66             &reader, &slice))) {
  67       g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader);
  68       GPR_ASSERT(
  69           g_core_codegen_interface->grpc_byte_buffer_reader_init(&reader, bb));
  70       continue;
  71     }
  72   }
  73
  74   g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader);
  75   g_core_codegen_interface->grpc_byte_buffer_destroy(bb);
  76   for (auto& slice : slices) {
  77     g_core_codegen_interface->grpc_slice_unref(slice);
  78   }
  79 }
  80 BENCHMARK(BM_ByteBufferReader_Next)->Ranges({{64 * 1024, 1024 * 1024}});
  81
  82 static void BM_ByteBufferReader_Peek(benchmark::State& state) {
  83   const int num_slices = state.range(0);
  84   constexpr size_t kSliceSize = 16;
  85   std::vector<grpc_slice> slices;
  86   for (int i = 0; i < num_slices; ++i) {
  87     std::unique_ptr<char[]> buf(new char[kSliceSize]);
  88     slices.emplace_back(g_core_codegen_interface->grpc_slice_from_copied_buffer(
  89         buf.get(), kSliceSize));
  90   }
  91   grpc_byte_buffer* bb = g_core_codegen_interface->grpc_raw_byte_buffer_create(
  92       slices.data(), num_slices);
  93   grpc_byte_buffer_reader reader;
  94   GPR_ASSERT(
  95       g_core_codegen_interface->grpc_byte_buffer_reader_init(&reader, bb));
  96   while (state.KeepRunning()) {
  97     grpc_slice* slice;
  98     if (GPR_UNLIKELY(!g_core_codegen_interface->grpc_byte_buffer_reader_peek(
  99             &reader, &slice))) {
 100       g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader);
 101       GPR_ASSERT(
 102           g_core_codegen_interface->grpc_byte_buffer_reader_init(&reader, bb));
 103       continue;
 104     }
 105   }
 106
 107   g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader);
 108   g_core_codegen_interface->grpc_byte_buffer_destroy(bb);
 109   for (auto& slice : slices) {
 110     g_core_codegen_interface->grpc_slice_unref(slice);
 111   }
 112 }
 113 BENCHMARK(BM_ByteBufferReader_Peek)->Ranges({{64 * 1024, 1024 * 1024}});
 114
 115 }  // namespace testing
 116 }  // namespace grpc
 117
 118 // Some distros have RunSpecifiedBenchmarks under the benchmark namespace,
 119 // and others do not. This allows us to support both modes.
 120 namespace benchmark {
 121 void RunTheBenchmarksNamespaced() { RunSpecifiedBenchmarks(); }
 122 }  // namespace benchmark
 123
 124 int main(int argc, char** argv) {
 125   LibraryInitializer libInit;
 126   ::benchmark::Initialize(&argc, argv);
 127   ::grpc::testing::InitTest(&argc, &argv, false);
 128   benchmark::RunTheBenchmarksNamespaced();
 129   return 0;
 130 }