1 #include "benchmark/benchmark.h"
2 #include <nlohmann/json.hpp>
3 #include <fstream>
4
5 using json = nlohmann::json;
6
7 //////////////////////////////////////////////////////////////////////////////
8 // parse JSON from file
9 //////////////////////////////////////////////////////////////////////////////
10
ParseFile(benchmark::State & state,const char * filename)11 static void ParseFile(benchmark::State& state, const char* filename)
12 {
13 while (state.KeepRunning())
14 {
15 state.PauseTiming();
16 auto* f = new std::ifstream(filename);
17 auto* j = new json();
18 state.ResumeTiming();
19
20 *j = json::parse(*f);
21
22 state.PauseTiming();
23 delete f;
24 delete j;
25 state.ResumeTiming();
26 }
27
28 std::ifstream file(filename, std::ios::binary | std::ios::ate);
29 state.SetBytesProcessed(state.iterations() * file.tellg());
30 }
31 BENCHMARK_CAPTURE(ParseFile, jeopardy, "data/jeopardy/jeopardy.json");
32 BENCHMARK_CAPTURE(ParseFile, canada, "data/nativejson-benchmark/canada.json");
33 BENCHMARK_CAPTURE(ParseFile, citm_catalog, "data/nativejson-benchmark/citm_catalog.json");
34 BENCHMARK_CAPTURE(ParseFile, twitter, "data/nativejson-benchmark/twitter.json");
35 BENCHMARK_CAPTURE(ParseFile, floats, "data/numbers/floats.json");
36 BENCHMARK_CAPTURE(ParseFile, signed_ints, "data/numbers/signed_ints.json");
37 BENCHMARK_CAPTURE(ParseFile, unsigned_ints, "data/numbers/unsigned_ints.json");
38 BENCHMARK_CAPTURE(ParseFile, small_signed_ints, "data/numbers/small_signed_ints.json");
39
40 //////////////////////////////////////////////////////////////////////////////
41 // parse JSON from string
42 //////////////////////////////////////////////////////////////////////////////
43
ParseString(benchmark::State & state,const char * filename)44 static void ParseString(benchmark::State& state, const char* filename)
45 {
46 std::ifstream f(filename);
47 std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
48
49 while (state.KeepRunning())
50 {
51 state.PauseTiming();
52 auto* j = new json();
53 state.ResumeTiming();
54
55 *j = json::parse(str);
56
57 state.PauseTiming();
58 delete j;
59 state.ResumeTiming();
60 }
61
62 state.SetBytesProcessed(state.iterations() * str.size());
63 }
64 BENCHMARK_CAPTURE(ParseString, jeopardy, "data/jeopardy/jeopardy.json");
65 BENCHMARK_CAPTURE(ParseString, canada, "data/nativejson-benchmark/canada.json");
66 BENCHMARK_CAPTURE(ParseString, citm_catalog, "data/nativejson-benchmark/citm_catalog.json");
67 BENCHMARK_CAPTURE(ParseString, twitter, "data/nativejson-benchmark/twitter.json");
68 BENCHMARK_CAPTURE(ParseString, floats, "data/numbers/floats.json");
69 BENCHMARK_CAPTURE(ParseString, signed_ints, "data/numbers/signed_ints.json");
70 BENCHMARK_CAPTURE(ParseString, unsigned_ints, "data/numbers/unsigned_ints.json");
71 BENCHMARK_CAPTURE(ParseString, small_signed_ints, "data/numbers/small_signed_ints.json");
72
73
74 //////////////////////////////////////////////////////////////////////////////
75 // serialize JSON
76 //////////////////////////////////////////////////////////////////////////////
77
Dump(benchmark::State & state,const char * filename,int indent)78 static void Dump(benchmark::State& state, const char* filename, int indent)
79 {
80 std::ifstream f(filename);
81 std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
82 json j = json::parse(str);
83
84 while (state.KeepRunning())
85 {
86 j.dump(indent);
87 }
88
89 state.SetBytesProcessed(state.iterations() * j.dump(indent).size());
90 }
91 BENCHMARK_CAPTURE(Dump, jeopardy / -, "data/jeopardy/jeopardy.json", -1);
92 BENCHMARK_CAPTURE(Dump, jeopardy / 4, "data/jeopardy/jeopardy.json", 4);
93 BENCHMARK_CAPTURE(Dump, canada / -, "data/nativejson-benchmark/canada.json", -1);
94 BENCHMARK_CAPTURE(Dump, canada / 4, "data/nativejson-benchmark/canada.json", 4);
95 BENCHMARK_CAPTURE(Dump, citm_catalog / -, "data/nativejson-benchmark/citm_catalog.json", -1);
96 BENCHMARK_CAPTURE(Dump, citm_catalog / 4, "data/nativejson-benchmark/citm_catalog.json", 4);
97 BENCHMARK_CAPTURE(Dump, twitter / -, "data/nativejson-benchmark/twitter.json", -1);
98 BENCHMARK_CAPTURE(Dump, twitter / 4, "data/nativejson-benchmark/twitter.json", 4);
99 BENCHMARK_CAPTURE(Dump, floats / -, "data/numbers/floats.json", -1);
100 BENCHMARK_CAPTURE(Dump, floats / 4, "data/numbers/floats.json", 4);
101 BENCHMARK_CAPTURE(Dump, signed_ints / -, "data/numbers/signed_ints.json", -1);
102 BENCHMARK_CAPTURE(Dump, signed_ints / 4, "data/numbers/signed_ints.json", 4);
103 BENCHMARK_CAPTURE(Dump, unsigned_ints / -, "data/numbers/unsigned_ints.json", -1);
104 BENCHMARK_CAPTURE(Dump, unsigned_ints / 4, "data/numbers/unsigned_ints.json", 4);
105 BENCHMARK_CAPTURE(Dump, small_signed_ints / -, "data/numbers/small_signed_ints.json", -1);
106 BENCHMARK_CAPTURE(Dump, small_signed_ints / 4, "data/numbers/small_signed_ints.json", 4);
107
108
109 BENCHMARK_MAIN();
110