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/parsing/scanner-character-streams.h" 40 #include "src/parsing/parser.h" 41 #include "src/parsing/preparse-data-format.h" 42 #include "src/parsing/preparse-data.h" 43 #include "src/parsing/preparser.h" 44 #include "tools/shell-utils.h" 45 46 using namespace v8::internal; 47 48 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator { 49 public: 50 virtual void* Allocate(size_t length) { 51 void* data = AllocateUninitialized(length); 52 return data == NULL ? data : memset(data, 0, length); 53 } 54 virtual void* AllocateUninitialized(size_t length) { return malloc(length); } 55 virtual void Free(void* data, size_t) { free(data); } 56 }; 57 58 class StringResource8 : public v8::String::ExternalOneByteStringResource { 59 public: 60 StringResource8(const char* data, int length) 61 : data_(data), length_(length) { } 62 virtual size_t length() const { return length_; } 63 virtual const char* data() const { return data_; } 64 65 private: 66 const char* data_; 67 int length_; 68 }; 69 70 std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser( 71 const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate, 72 v8::Local<v8::Context> context) { 73 int length = 0; 74 const byte* source = ReadFileAndRepeat(fname, &length, repeat); 75 v8::Local<v8::String> source_handle; 76 switch (encoding) { 77 case UTF8: { 78 source_handle = v8::String::NewFromUtf8( 79 isolate, reinterpret_cast<const char*>(source), 80 v8::NewStringType::kNormal).ToLocalChecked(); 81 break; 82 } 83 case UTF16: { 84 source_handle = 85 v8::String::NewFromTwoByte( 86 isolate, reinterpret_cast<const uint16_t*>(source), 87 v8::NewStringType::kNormal, length / 2).ToLocalChecked(); 88 break; 89 } 90 case LATIN1: { 91 StringResource8* string_resource = 92 new StringResource8(reinterpret_cast<const char*>(source), length); 93 source_handle = v8::String::NewExternalOneByte(isolate, string_resource) 94 .ToLocalChecked(); 95 break; 96 } 97 } 98 v8::base::TimeDelta parse_time1, parse_time2; 99 Handle<Script> script = 100 reinterpret_cast<i::Isolate*>(isolate)->factory()->NewScript( 101 v8::Utils::OpenHandle(*source_handle)); 102 i::ScriptData* cached_data_impl = NULL; 103 // First round of parsing (produce data to cache). 104 { 105 Zone zone(reinterpret_cast<i::Isolate*>(isolate)->allocator()); 106 ParseInfo info(&zone, script); 107 info.set_global(); 108 info.set_cached_data(&cached_data_impl); 109 info.set_compile_options(v8::ScriptCompiler::kProduceParserCache); 110 v8::base::ElapsedTimer timer; 111 timer.Start(); 112 // Allow lazy parsing; otherwise we won't produce cached data. 113 info.set_allow_lazy_parsing(); 114 bool success = Parser::ParseStatic(&info); 115 parse_time1 = 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 // Second round of parsing (consume cached data). 122 { 123 Zone zone(reinterpret_cast<i::Isolate*>(isolate)->allocator()); 124 ParseInfo info(&zone, script); 125 info.set_global(); 126 info.set_cached_data(&cached_data_impl); 127 info.set_compile_options(v8::ScriptCompiler::kConsumeParserCache); 128 v8::base::ElapsedTimer timer; 129 timer.Start(); 130 // Allow lazy parsing; otherwise cached data won't help. 131 info.set_allow_lazy_parsing(); 132 bool success = Parser::ParseStatic(&info); 133 parse_time2 = timer.Elapsed(); 134 if (!success) { 135 fprintf(stderr, "Parsing failed\n"); 136 return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta()); 137 } 138 } 139 return std::make_pair(parse_time1, parse_time2); 140 } 141 142 143 int main(int argc, char* argv[]) { 144 v8::V8::SetFlagsFromCommandLine(&argc, argv, true); 145 v8::V8::InitializeICUDefaultLocation(argv[0]); 146 v8::Platform* platform = v8::platform::CreateDefaultPlatform(); 147 v8::V8::InitializePlatform(platform); 148 v8::V8::Initialize(); 149 v8::V8::InitializeExternalStartupData(argv[0]); 150 151 Encoding encoding = LATIN1; 152 std::vector<std::string> fnames; 153 std::string benchmark; 154 int repeat = 1; 155 for (int i = 0; i < argc; ++i) { 156 if (strcmp(argv[i], "--latin1") == 0) { 157 encoding = LATIN1; 158 } else if (strcmp(argv[i], "--utf8") == 0) { 159 encoding = UTF8; 160 } else if (strcmp(argv[i], "--utf16") == 0) { 161 encoding = UTF16; 162 } else if (strncmp(argv[i], "--benchmark=", 12) == 0) { 163 benchmark = std::string(argv[i]).substr(12); 164 } else if (strncmp(argv[i], "--repeat=", 9) == 0) { 165 std::string repeat_str = std::string(argv[i]).substr(9); 166 repeat = atoi(repeat_str.c_str()); 167 } else if (i > 0 && argv[i][0] != '-') { 168 fnames.push_back(std::string(argv[i])); 169 } 170 } 171 ArrayBufferAllocator array_buffer_allocator; 172 v8::Isolate::CreateParams create_params; 173 create_params.array_buffer_allocator = &array_buffer_allocator; 174 v8::Isolate* isolate = v8::Isolate::New(create_params); 175 { 176 v8::Isolate::Scope isolate_scope(isolate); 177 v8::HandleScope handle_scope(isolate); 178 v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate); 179 v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global); 180 DCHECK(!context.IsEmpty()); 181 { 182 v8::Context::Scope scope(context); 183 double first_parse_total = 0; 184 double second_parse_total = 0; 185 for (size_t i = 0; i < fnames.size(); i++) { 186 std::pair<v8::base::TimeDelta, v8::base::TimeDelta> time = 187 RunBaselineParser(fnames[i].c_str(), encoding, repeat, isolate, 188 context); 189 first_parse_total += time.first.InMillisecondsF(); 190 second_parse_total += time.second.InMillisecondsF(); 191 } 192 if (benchmark.empty()) benchmark = "Baseline"; 193 printf("%s(FirstParseRunTime): %.f ms\n", benchmark.c_str(), 194 first_parse_total); 195 printf("%s(SecondParseRunTime): %.f ms\n", benchmark.c_str(), 196 second_parse_total); 197 } 198 } 199 v8::V8::Dispose(); 200 v8::V8::ShutdownPlatform(); 201 delete platform; 202 return 0; 203 } 204
