1/*
2 * Copyright (C) 2014 The Android Open Source Project
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#include "benchmark.h"
18
19#include <stdio.h>
20
21#define KB 1024
22#define MB 1024*KB
23
24#define AT_COMMON_SIZES \
25    Arg(1)->Arg(2)->Arg(3)->Arg(4)->Arg(8)->Arg(16)->Arg(32)->Arg(64)->Arg(512)-> \
26    Arg(1*KB)->Arg(4*KB)->Arg(8*KB)->Arg(16*KB)->Arg(64*KB)
27
28static void BM_stdio_fread(int iters, int chunk_size) {
29  StopBenchmarkTiming();
30  FILE* fp = fopen("/dev/zero", "rw");
31  char* buf = new char[chunk_size];
32  StartBenchmarkTiming();
33
34  for (int i = 0; i < iters; ++i) {
35    fread(buf, chunk_size, 1, fp);
36  }
37
38  StopBenchmarkTiming();
39  SetBenchmarkBytesProcessed(int64_t(iters) * int64_t(chunk_size));
40  delete[] buf;
41  fclose(fp);
42}
43BENCHMARK(BM_stdio_fread)->AT_COMMON_SIZES;
44
45
46static void BM_stdio_fwrite(int iters, int chunk_size) {
47  StopBenchmarkTiming();
48  FILE* fp = fopen("/dev/zero", "rw");
49  char* buf = new char[chunk_size];
50  StartBenchmarkTiming();
51
52  for (int i = 0; i < iters; ++i) {
53      fwrite(buf, chunk_size, 1, fp);
54  }
55
56  StopBenchmarkTiming();
57  SetBenchmarkBytesProcessed(int64_t(iters) * int64_t(chunk_size));
58  delete[] buf;
59  fclose(fp);
60}
61BENCHMARK(BM_stdio_fwrite)->AT_COMMON_SIZES;
62