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27 
28 #include <assert.h>
29 #include <string.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string>
33 #include <vector>
34 #include "src/v8.h"
35 
36 #include "include/libplatform/libplatform.h"
37 #include "src/api.h"
38 #include "src/compiler.h"
39 #include "src/objects-inl.h"
40 #include "src/parsing/parse-info.h"
41 #include "src/parsing/parsing.h"
42 #include "src/parsing/preparse-data-format.h"
43 #include "src/parsing/preparse-data.h"
44 #include "src/parsing/preparser.h"
45 #include "src/parsing/scanner-character-streams.h"
46 #include "tools/shell-utils.h"
47 
48 using namespace v8::internal;
49 
50 class StringResource8 : public v8::String::ExternalOneByteStringResource {
51  public:
StringResource8(const char * data,int length)52   StringResource8(const char* data, int length)
53       : data_(data), length_(length) { }
length() const54   virtual size_t length() const { return length_; }
data() const55   virtual const char* data() const { return data_; }
56 
57  private:
58   const char* data_;
59   int length_;
60 };
61 
RunBaselineParser(const char * fname,Encoding encoding,int repeat,v8::Isolate * isolate,v8::Local<v8::Context> context)62 std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser(
63     const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate,
64     v8::Local<v8::Context> context) {
65   int length = 0;
66   const byte* source = ReadFileAndRepeat(fname, &length, repeat);
67   v8::Local<v8::String> source_handle;
68   switch (encoding) {
69     case UTF8: {
70       source_handle = v8::String::NewFromUtf8(
71                           isolate, reinterpret_cast<const char*>(source),
72                           v8::NewStringType::kNormal).ToLocalChecked();
73       break;
74     }
75     case UTF16: {
76       source_handle =
77           v8::String::NewFromTwoByte(
78               isolate, reinterpret_cast<const uint16_t*>(source),
79               v8::NewStringType::kNormal, length / 2).ToLocalChecked();
80       break;
81     }
82     case LATIN1: {
83       StringResource8* string_resource =
84           new StringResource8(reinterpret_cast<const char*>(source), length);
85       source_handle = v8::String::NewExternalOneByte(isolate, string_resource)
86                           .ToLocalChecked();
87       break;
88     }
89   }
90   v8::base::TimeDelta parse_time1, parse_time2;
91   Handle<Script> script =
92       reinterpret_cast<i::Isolate*>(isolate)->factory()->NewScript(
93           v8::Utils::OpenHandle(*source_handle));
94   i::ScriptData* cached_data_impl = NULL;
95   // First round of parsing (produce data to cache).
96   {
97     ParseInfo info(script);
98     info.set_cached_data(&cached_data_impl);
99     info.set_compile_options(v8::ScriptCompiler::kProduceParserCache);
100     v8::base::ElapsedTimer timer;
101     timer.Start();
102     bool success = parsing::ParseProgram(&info);
103     parse_time1 = timer.Elapsed();
104     if (!success) {
105       fprintf(stderr, "Parsing failed\n");
106       return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta());
107     }
108   }
109   // Second round of parsing (consume cached data).
110   {
111     ParseInfo info(script);
112     info.set_cached_data(&cached_data_impl);
113     info.set_compile_options(v8::ScriptCompiler::kConsumeParserCache);
114     v8::base::ElapsedTimer timer;
115     timer.Start();
116     bool success = parsing::ParseProgram(&info);
117     parse_time2 = timer.Elapsed();
118     if (!success) {
119       fprintf(stderr, "Parsing failed\n");
120       return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta());
121     }
122   }
123   return std::make_pair(parse_time1, parse_time2);
124 }
125 
126 
main(int argc,char * argv[])127 int main(int argc, char* argv[]) {
128   v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
129   v8::V8::InitializeICUDefaultLocation(argv[0]);
130   v8::Platform* platform = v8::platform::CreateDefaultPlatform();
131   v8::V8::InitializePlatform(platform);
132   v8::V8::Initialize();
133   v8::V8::InitializeExternalStartupData(argv[0]);
134 
135   Encoding encoding = LATIN1;
136   std::vector<std::string> fnames;
137   std::string benchmark;
138   int repeat = 1;
139   for (int i = 0; i < argc; ++i) {
140     if (strcmp(argv[i], "--latin1") == 0) {
141       encoding = LATIN1;
142     } else if (strcmp(argv[i], "--utf8") == 0) {
143       encoding = UTF8;
144     } else if (strcmp(argv[i], "--utf16") == 0) {
145       encoding = UTF16;
146     } else if (strncmp(argv[i], "--benchmark=", 12) == 0) {
147       benchmark = std::string(argv[i]).substr(12);
148     } else if (strncmp(argv[i], "--repeat=", 9) == 0) {
149       std::string repeat_str = std::string(argv[i]).substr(9);
150       repeat = atoi(repeat_str.c_str());
151     } else if (i > 0 && argv[i][0] != '-') {
152       fnames.push_back(std::string(argv[i]));
153     }
154   }
155   v8::Isolate::CreateParams create_params;
156   create_params.array_buffer_allocator =
157       v8::ArrayBuffer::Allocator::NewDefaultAllocator();
158   v8::Isolate* isolate = v8::Isolate::New(create_params);
159   {
160     v8::Isolate::Scope isolate_scope(isolate);
161     v8::HandleScope handle_scope(isolate);
162     v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
163     v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
164     DCHECK(!context.IsEmpty());
165     {
166       v8::Context::Scope scope(context);
167       double first_parse_total = 0;
168       double second_parse_total = 0;
169       for (size_t i = 0; i < fnames.size(); i++) {
170         std::pair<v8::base::TimeDelta, v8::base::TimeDelta> time =
171             RunBaselineParser(fnames[i].c_str(), encoding, repeat, isolate,
172                               context);
173         first_parse_total += time.first.InMillisecondsF();
174         second_parse_total += time.second.InMillisecondsF();
175       }
176       if (benchmark.empty()) benchmark = "Baseline";
177       printf("%s(FirstParseRunTime): %.f ms\n", benchmark.c_str(),
178              first_parse_total);
179       printf("%s(SecondParseRunTime): %.f ms\n", benchmark.c_str(),
180              second_parse_total);
181     }
182   }
183   v8::V8::Dispose();
184   v8::V8::ShutdownPlatform();
185   delete platform;
186   delete create_params.array_buffer_allocator;
187   return 0;
188 }
189