1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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/scanner-character-streams.h" 40 #include "tools/shell-utils.h" 41 #include "src/parser.h" 42 #include "src/preparse-data-format.h" 43 #include "src/preparse-data.h" 44 #include "src/preparser.h" 45 46 using namespace v8::internal; 47 48 class StringResource8 : public v8::String::ExternalOneByteStringResource { 49 public: 50 StringResource8(const char* data, int length) 51 : data_(data), length_(length) { } 52 virtual size_t length() const { return length_; } 53 virtual const char* data() const { return data_; } 54 55 private: 56 const char* data_; 57 int length_; 58 }; 59 60 std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser( 61 const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate, 62 v8::Handle<v8::Context> context) { 63 int length = 0; 64 const byte* source = ReadFileAndRepeat(fname, &length, repeat); 65 v8::Handle<v8::String> source_handle; 66 switch (encoding) { 67 case UTF8: { 68 source_handle = v8::String::NewFromUtf8( 69 isolate, reinterpret_cast<const char*>(source)); 70 break; 71 } 72 case UTF16: { 73 source_handle = v8::String::NewFromTwoByte( 74 isolate, reinterpret_cast<const uint16_t*>(source), 75 v8::String::kNormalString, length / 2); 76 break; 77 } 78 case LATIN1: { 79 StringResource8* string_resource = 80 new StringResource8(reinterpret_cast<const char*>(source), length); 81 source_handle = v8::String::NewExternal(isolate, string_resource); 82 break; 83 } 84 } 85 v8::base::TimeDelta parse_time1, parse_time2; 86 Handle<Script> script = Isolate::Current()->factory()->NewScript( 87 v8::Utils::OpenHandle(*source_handle)); 88 i::ScriptData* cached_data_impl = NULL; 89 // First round of parsing (produce data to cache). 90 { 91 CompilationInfoWithZone info(script); 92 info.MarkAsGlobal(); 93 info.SetCachedData(&cached_data_impl, 94 v8::ScriptCompiler::kProduceParserCache); 95 v8::base::ElapsedTimer timer; 96 timer.Start(); 97 // Allow lazy parsing; otherwise we won't produce cached data. 98 bool success = Parser::Parse(&info, true); 99 parse_time1 = timer.Elapsed(); 100 if (!success) { 101 fprintf(stderr, "Parsing failed\n"); 102 return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta()); 103 } 104 } 105 // Second round of parsing (consume cached data). 106 { 107 CompilationInfoWithZone info(script); 108 info.MarkAsGlobal(); 109 info.SetCachedData(&cached_data_impl, 110 v8::ScriptCompiler::kConsumeParserCache); 111 v8::base::ElapsedTimer timer; 112 timer.Start(); 113 // Allow lazy parsing; otherwise cached data won't help. 114 bool success = Parser::Parse(&info, true); 115 parse_time2 = timer.Elapsed(); 116 if (!success) { 117 fprintf(stderr, "Parsing failed\n"); 118 return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta()); 119 } 120 } 121 return std::make_pair(parse_time1, parse_time2); 122 } 123 124 125 int main(int argc, char* argv[]) { 126 v8::V8::SetFlagsFromCommandLine(&argc, argv, true); 127 v8::V8::InitializeICU(); 128 v8::Platform* platform = v8::platform::CreateDefaultPlatform(); 129 v8::V8::InitializePlatform(platform); 130 v8::V8::Initialize(); 131 Encoding encoding = LATIN1; 132 std::vector<std::string> fnames; 133 std::string benchmark; 134 int repeat = 1; 135 for (int i = 0; i < argc; ++i) { 136 if (strcmp(argv[i], "--latin1") == 0) { 137 encoding = LATIN1; 138 } else if (strcmp(argv[i], "--utf8") == 0) { 139 encoding = UTF8; 140 } else if (strcmp(argv[i], "--utf16") == 0) { 141 encoding = UTF16; 142 } else if (strncmp(argv[i], "--benchmark=", 12) == 0) { 143 benchmark = std::string(argv[i]).substr(12); 144 } else if (strncmp(argv[i], "--repeat=", 9) == 0) { 145 std::string repeat_str = std::string(argv[i]).substr(9); 146 repeat = atoi(repeat_str.c_str()); 147 } else if (i > 0 && argv[i][0] != '-') { 148 fnames.push_back(std::string(argv[i])); 149 } 150 } 151 v8::Isolate* isolate = v8::Isolate::New(); 152 { 153 v8::Isolate::Scope isolate_scope(isolate); 154 v8::HandleScope handle_scope(isolate); 155 v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate); 156 v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global); 157 DCHECK(!context.IsEmpty()); 158 { 159 v8::Context::Scope scope(context); 160 double first_parse_total = 0; 161 double second_parse_total = 0; 162 for (size_t i = 0; i < fnames.size(); i++) { 163 std::pair<v8::base::TimeDelta, v8::base::TimeDelta> time = 164 RunBaselineParser(fnames[i].c_str(), encoding, repeat, isolate, 165 context); 166 first_parse_total += time.first.InMillisecondsF(); 167 second_parse_total += time.second.InMillisecondsF(); 168 } 169 if (benchmark.empty()) benchmark = "Baseline"; 170 printf("%s(FirstParseRunTime): %.f ms\n", benchmark.c_str(), 171 first_parse_total); 172 printf("%s(SecondParseRunTime): %.f ms\n", benchmark.c_str(), 173 second_parse_total); 174 } 175 } 176 v8::V8::Dispose(); 177 v8::V8::ShutdownPlatform(); 178 delete platform; 179 return 0; 180 } 181
