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// 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 "src/v8.h"
#include "include/libplatform/libplatform.h"
#include "src/api.h"
#include "src/compiler.h"
#include "src/scanner-character-streams.h"
#include "tools/shell-utils.h"
#include "src/parser.h"
#include "src/preparse-data-format.h"
#include "src/preparse-data.h"
#include "src/preparser.h"
using namespace v8::internal;
class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
virtual void* Allocate(size_t length) {
void* data = AllocateUninitialized(length);
return data == NULL ? data : memset(data, 0, length);
}
virtual void* AllocateUninitialized(size_t length) { return malloc(length); }
virtual void Free(void* data, size_t) { free(data); }
};
class StringResource8 : public v8::String::ExternalOneByteStringResource {
public:
StringResource8(const char* data, int length)
: data_(data), length_(length) { }
virtual size_t length() const { return length_; }
virtual const char* data() const { return data_; }
private:
const char* data_;
int length_;
};
std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser(
const char* fname, Encoding encoding, int repeat, v8::Isolate* isolate,
v8::Local<v8::Context> context) {
int length = 0;
const byte* source = ReadFileAndRepeat(fname, &length, repeat);
v8::Local<v8::String> source_handle;
switch (encoding) {
case UTF8: {
source_handle = v8::String::NewFromUtf8(
isolate, reinterpret_cast<const char*>(source),
v8::NewStringType::kNormal).ToLocalChecked();
break;
}
case UTF16: {
source_handle =
v8::String::NewFromTwoByte(
isolate, reinterpret_cast<const uint16_t*>(source),
v8::NewStringType::kNormal, length / 2).ToLocalChecked();
break;
}
case LATIN1: {
StringResource8* string_resource =
new StringResource8(reinterpret_cast<const char*>(source), length);
source_handle = v8::String::NewExternalOneByte(isolate, string_resource)
.ToLocalChecked();
break;
}
}
v8::base::TimeDelta parse_time1, parse_time2;
Handle<Script> script =
reinterpret_cast<i::Isolate*>(isolate)->factory()->NewScript(
v8::Utils::OpenHandle(*source_handle));
i::ScriptData* cached_data_impl = NULL;
// First round of parsing (produce data to cache).
{
Zone zone;
ParseInfo info(&zone, script);
info.set_global();
info.set_cached_data(&cached_data_impl);
info.set_compile_options(v8::ScriptCompiler::kProduceParserCache);
v8::base::ElapsedTimer timer;
timer.Start();
// Allow lazy parsing; otherwise we won't produce cached data.
info.set_allow_lazy_parsing();
bool success = Parser::ParseStatic(&info);
parse_time1 = timer.Elapsed();
if (!success) {
fprintf(stderr, "Parsing failed\n");
return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta());
}
}
// Second round of parsing (consume cached data).
{
Zone zone;
ParseInfo info(&zone, script);
info.set_global();
info.set_cached_data(&cached_data_impl);
info.set_compile_options(v8::ScriptCompiler::kConsumeParserCache);
v8::base::ElapsedTimer timer;
timer.Start();
// Allow lazy parsing; otherwise cached data won't help.
info.set_allow_lazy_parsing();
bool success = Parser::ParseStatic(&info);
parse_time2 = timer.Elapsed();
if (!success) {
fprintf(stderr, "Parsing failed\n");
return std::make_pair(v8::base::TimeDelta(), v8::base::TimeDelta());
}
}
return std::make_pair(parse_time1, parse_time2);
}
int main(int argc, char* argv[]) {
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
v8::V8::InitializeICU();
v8::Platform* platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(platform);
v8::V8::Initialize();
v8::V8::InitializeExternalStartupData(argv[0]);
Encoding encoding = LATIN1;
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 (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]));
}
}
ArrayBufferAllocator array_buffer_allocator;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = &array_buffer_allocator;
v8::Isolate* isolate = v8::Isolate::New(create_params);
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
DCHECK(!context.IsEmpty());
{
v8::Context::Scope scope(context);
double first_parse_total = 0;
double second_parse_total = 0;
for (size_t i = 0; i < fnames.size(); i++) {
std::pair<v8::base::TimeDelta, v8::base::TimeDelta> time =
RunBaselineParser(fnames[i].c_str(), encoding, repeat, isolate,
context);
first_parse_total += time.first.InMillisecondsF();
second_parse_total += time.second.InMillisecondsF();
}
if (benchmark.empty()) benchmark = "Baseline";
printf("%s(FirstParseRunTime): %.f ms\n", benchmark.c_str(),
first_parse_total);
printf("%s(SecondParseRunTime): %.f ms\n", benchmark.c_str(),
second_parse_total);
}
}
v8::V8::Dispose();
v8::V8::ShutdownPlatform();
delete platform;
return 0;
}
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