1 // Copyright 2014 the V8 project authors. All rights reserved.
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3 // modification, are permitted provided that the following conditions are
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7 // notice, this list of conditions and the following disclaimer.
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38 #include "scanner-character-streams.h"
39 #include "shell-utils.h"
41 #include "preparse-data-format.h"
42 #include "preparse-data.h"
43 #include "preparser.h"
45 using namespace v8::internal;
47 std::pair<TimeDelta, TimeDelta> RunBaselineParser(
48 const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate,
49 v8::Handle<v8::Context> context) {
51 const byte* source = ReadFileAndRepeat(fname, &length, repeat);
52 v8::Handle<v8::String> source_handle;
55 source_handle = v8::String::NewFromUtf8(
56 isolate, reinterpret_cast<const char*>(source));
60 source_handle = v8::String::NewFromTwoByte(
61 isolate, reinterpret_cast<const uint16_t*>(source),
62 v8::String::kNormalString, length / 2);
66 source_handle = v8::String::NewFromOneByte(isolate, source);
70 TimeDelta parse_time1, parse_time2;
71 Handle<Script> script = Isolate::Current()->factory()->NewScript(
72 v8::Utils::OpenHandle(*source_handle));
73 i::ScriptData* cached_data_impl = NULL;
74 // First round of parsing (produce data to cache).
76 CompilationInfoWithZone info(script);
78 info.SetCachedData(&cached_data_impl, i::PRODUCE_CACHED_DATA);
81 // Allow lazy parsing; otherwise we won't produce cached data.
82 bool success = Parser::Parse(&info, true);
83 parse_time1 = timer.Elapsed();
85 fprintf(stderr, "Parsing failed\n");
86 return std::make_pair(TimeDelta(), TimeDelta());
89 // Second round of parsing (consume cached data).
91 CompilationInfoWithZone info(script);
93 info.SetCachedData(&cached_data_impl, i::CONSUME_CACHED_DATA);
96 // Allow lazy parsing; otherwise cached data won't help.
97 bool success = Parser::Parse(&info, true);
98 parse_time2 = timer.Elapsed();
100 fprintf(stderr, "Parsing failed\n");
101 return std::make_pair(TimeDelta(), TimeDelta());
104 return std::make_pair(parse_time1, parse_time2);
108 int main(int argc, char* argv[]) {
109 v8::V8::InitializeICU();
110 v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
111 Encoding encoding = LATIN1;
112 std::vector<std::string> fnames;
113 std::string benchmark;
115 for (int i = 0; i < argc; ++i) {
116 if (strcmp(argv[i], "--latin1") == 0) {
118 } else if (strcmp(argv[i], "--utf8") == 0) {
120 } else if (strcmp(argv[i], "--utf16") == 0) {
122 } else if (strncmp(argv[i], "--benchmark=", 12) == 0) {
123 benchmark = std::string(argv[i]).substr(12);
124 } else if (strncmp(argv[i], "--repeat=", 9) == 0) {
125 std::string repeat_str = std::string(argv[i]).substr(9);
126 repeat = atoi(repeat_str.c_str());
127 } else if (i > 0 && argv[i][0] != '-') {
128 fnames.push_back(std::string(argv[i]));
131 v8::Isolate* isolate = v8::Isolate::GetCurrent();
133 v8::HandleScope handle_scope(isolate);
134 v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
135 v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
136 ASSERT(!context.IsEmpty());
138 v8::Context::Scope scope(context);
139 double first_parse_total = 0;
140 double second_parse_total = 0;
141 for (size_t i = 0; i < fnames.size(); i++) {
142 std::pair<TimeDelta, TimeDelta> time = RunBaselineParser(
143 fnames[i].c_str(), encoding, repeat, isolate, context);
144 first_parse_total += time.first.InMillisecondsF();
145 second_parse_total += time.second.InMillisecondsF();
147 if (benchmark.empty()) benchmark = "Baseline";
148 printf("%s(FirstParseRunTime): %.f ms\n", benchmark.c_str(),
150 printf("%s(SecondParseRunTime): %.f ms\n", benchmark.c_str(),