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Diffstat (limited to 'deps/v8/tools/parser-shell.cc')
-rw-r--r-- | deps/v8/tools/parser-shell.cc | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/deps/v8/tools/parser-shell.cc b/deps/v8/tools/parser-shell.cc new file mode 100644 index 0000000000..4da15fc7e3 --- /dev/null +++ b/deps/v8/tools/parser-shell.cc @@ -0,0 +1,171 @@ +// Copyright 2014 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include <assert.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <string> +#include <vector> +#include "v8.h" + +#include "api.h" +#include "compiler.h" +#include "scanner-character-streams.h" +#include "shell-utils.h" +#include "parser.h" +#include "preparse-data-format.h" +#include "preparse-data.h" +#include "preparser.h" + +using namespace v8::internal; + +enum TestMode { + PreParseAndParse, + PreParse, + Parse +}; + +std::pair<TimeDelta, TimeDelta> RunBaselineParser( + const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate, + v8::Handle<v8::Context> context, TestMode test_mode) { + int length = 0; + const byte* source = ReadFileAndRepeat(fname, &length, repeat); + v8::Handle<v8::String> source_handle; + switch (encoding) { + case UTF8: { + source_handle = v8::String::NewFromUtf8( + isolate, reinterpret_cast<const char*>(source)); + break; + } + case UTF16: { + source_handle = v8::String::NewFromTwoByte( + isolate, reinterpret_cast<const uint16_t*>(source), + v8::String::kNormalString, length / 2); + break; + } + case LATIN1: { + source_handle = v8::String::NewFromOneByte(isolate, source); + break; + } + } + v8::ScriptData* cached_data = NULL; + TimeDelta preparse_time, parse_time; + if (test_mode == PreParseAndParse || test_mode == PreParse) { + ElapsedTimer timer; + timer.Start(); + cached_data = v8::ScriptData::PreCompile(source_handle); + preparse_time = timer.Elapsed(); + if (cached_data == NULL || cached_data->HasError()) { + fprintf(stderr, "Preparsing failed\n"); + return std::make_pair(TimeDelta(), TimeDelta()); + } + } + if (test_mode == PreParseAndParse || test_mode == Parse) { + Handle<String> str = v8::Utils::OpenHandle(*source_handle); + i::Isolate* internal_isolate = str->GetIsolate(); + Handle<Script> script = internal_isolate->factory()->NewScript(str); + CompilationInfoWithZone info(script); + info.MarkAsGlobal(); + i::ScriptDataImpl* cached_data_impl = + static_cast<i::ScriptDataImpl*>(cached_data); + if (test_mode == PreParseAndParse) { + info.SetCachedData(&cached_data_impl, + i::CONSUME_CACHED_DATA); + } + info.SetContext(v8::Utils::OpenHandle(*context)); + ElapsedTimer timer; + timer.Start(); + // Allow lazy parsing; otherwise the preparse data won't help. + bool success = Parser::Parse(&info, true); + parse_time = timer.Elapsed(); + if (!success) { + fprintf(stderr, "Parsing failed\n"); + return std::make_pair(TimeDelta(), TimeDelta()); + } + } + return std::make_pair(preparse_time, parse_time); +} + + +int main(int argc, char* argv[]) { + v8::V8::InitializeICU(); + v8::V8::SetFlagsFromCommandLine(&argc, argv, true); + Encoding encoding = LATIN1; + TestMode test_mode = PreParseAndParse; + std::vector<std::string> fnames; + std::string benchmark; + int repeat = 1; + for (int i = 0; i < argc; ++i) { + if (strcmp(argv[i], "--latin1") == 0) { + encoding = LATIN1; + } else if (strcmp(argv[i], "--utf8") == 0) { + encoding = UTF8; + } else if (strcmp(argv[i], "--utf16") == 0) { + encoding = UTF16; + } else if (strcmp(argv[i], "--preparse-and-parse") == 0) { + test_mode = PreParseAndParse; + } else if (strcmp(argv[i], "--preparse") == 0) { + test_mode = PreParse; + } else if (strcmp(argv[i], "--parse") == 0) { + test_mode = Parse; + } else if (strncmp(argv[i], "--benchmark=", 12) == 0) { + benchmark = std::string(argv[i]).substr(12); + } else if (strncmp(argv[i], "--repeat=", 9) == 0) { + std::string repeat_str = std::string(argv[i]).substr(9); + repeat = atoi(repeat_str.c_str()); + } else if (i > 0 && argv[i][0] != '-') { + fnames.push_back(std::string(argv[i])); + } + } + v8::Isolate* isolate = v8::Isolate::GetCurrent(); + { + v8::HandleScope handle_scope(isolate); + v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate); + v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global); + ASSERT(!context.IsEmpty()); + { + v8::Context::Scope scope(context); + double preparse_total = 0; + double parse_total = 0; + for (size_t i = 0; i < fnames.size(); i++) { + std::pair<TimeDelta, TimeDelta> time = RunBaselineParser( + fnames[i].c_str(), encoding, repeat, isolate, context, test_mode); + preparse_total += time.first.InMillisecondsF(); + parse_total += time.second.InMillisecondsF(); + } + if (benchmark.empty()) benchmark = "Baseline"; + printf("%s(PreParseRunTime): %.f ms\n", benchmark.c_str(), + preparse_total); + printf("%s(ParseRunTime): %.f ms\n", benchmark.c_str(), parse_total); + printf("%s(RunTime): %.f ms\n", benchmark.c_str(), + preparse_total + parse_total); + } + } + v8::V8::Dispose(); + return 0; +} |