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v8/src/d8.cc
bmeurer@chromium.org 30f18f0f7d Use Chrome compatible naming for compiler specifics. 
Less useless creativity is best creativity!

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/526223002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23579 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-09-02 07:07:52 +00:00

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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Defined when linking against shared lib on Windows.
#if defined(USING_V8_SHARED) && !defined(V8_SHARED)
#define V8_SHARED
#endif
#ifdef COMPRESS_STARTUP_DATA_BZ2
#include <bzlib.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#ifdef V8_SHARED
#include <assert.h>
#endif // V8_SHARED
#ifndef V8_SHARED
#include <algorithm>
#endif // !V8_SHARED
#ifdef V8_SHARED
#include "include/v8-testing.h"
#endif // V8_SHARED
#if !defined(V8_SHARED) && defined(ENABLE_GDB_JIT_INTERFACE)
#include "src/gdb-jit.h"
#endif
#ifdef ENABLE_VTUNE_JIT_INTERFACE
#include "src/third_party/vtune/v8-vtune.h"
#endif
#include "src/d8.h"
#include "include/libplatform/libplatform.h"
#ifndef V8_SHARED
#include "src/api.h"
#include "src/base/cpu.h"
#include "src/base/logging.h"
#include "src/base/platform/platform.h"
#include "src/base/sys-info.h"
#include "src/d8-debug.h"
#include "src/debug.h"
#include "src/natives.h"
#include "src/v8.h"
#endif // !V8_SHARED
#if !defined(_WIN32) && !defined(_WIN64)
#include <unistd.h> // NOLINT
#endif
#ifndef DCHECK
#define DCHECK(condition) assert(condition)
#endif
namespace v8 {
static Handle<Value> Throw(Isolate* isolate, const char* message) {
return isolate->ThrowException(String::NewFromUtf8(isolate, message));
}
class PerIsolateData {
public:
explicit PerIsolateData(Isolate* isolate) : isolate_(isolate), realms_(NULL) {
HandleScope scope(isolate);
isolate->SetData(0, this);
}
~PerIsolateData() {
isolate_->SetData(0, NULL); // Not really needed, just to be sure...
}
inline static PerIsolateData* Get(Isolate* isolate) {
return reinterpret_cast<PerIsolateData*>(isolate->GetData(0));
}
class RealmScope {
public:
explicit RealmScope(PerIsolateData* data);
~RealmScope();
private:
PerIsolateData* data_;
};
private:
friend class Shell;
friend class RealmScope;
Isolate* isolate_;
int realm_count_;
int realm_current_;
int realm_switch_;
Persistent<Context>* realms_;
Persistent<Value> realm_shared_;
int RealmIndexOrThrow(const v8::FunctionCallbackInfo<v8::Value>& args,
int arg_offset);
int RealmFind(Handle<Context> context);
};
LineEditor *LineEditor::current_ = NULL;
LineEditor::LineEditor(Type type, const char* name)
: type_(type), name_(name) {
if (current_ == NULL || current_->type_ < type) current_ = this;
}
class DumbLineEditor: public LineEditor {
public:
explicit DumbLineEditor(Isolate* isolate)
: LineEditor(LineEditor::DUMB, "dumb"), isolate_(isolate) { }
virtual Handle<String> Prompt(const char* prompt);
private:
Isolate* isolate_;
};
Handle<String> DumbLineEditor::Prompt(const char* prompt) {
printf("%s", prompt);
#if defined(__native_client__)
// Native Client libc is used to being embedded in Chrome and
// has trouble recognizing when to flush.
fflush(stdout);
#endif
return Shell::ReadFromStdin(isolate_);
}
#ifndef V8_SHARED
CounterMap* Shell::counter_map_;
base::OS::MemoryMappedFile* Shell::counters_file_ = NULL;
CounterCollection Shell::local_counters_;
CounterCollection* Shell::counters_ = &local_counters_;
base::Mutex Shell::context_mutex_;
const base::TimeTicks Shell::kInitialTicks =
base::TimeTicks::HighResolutionNow();
Persistent<Context> Shell::utility_context_;
#endif // !V8_SHARED
Persistent<Context> Shell::evaluation_context_;
ShellOptions Shell::options;
const char* Shell::kPrompt = "d8> ";
#ifndef V8_SHARED
const int MB = 1024 * 1024;
bool CounterMap::Match(void* key1, void* key2) {
const char* name1 = reinterpret_cast<const char*>(key1);
const char* name2 = reinterpret_cast<const char*>(key2);
return strcmp(name1, name2) == 0;
}
#endif // !V8_SHARED
// Converts a V8 value to a C string.
const char* Shell::ToCString(const v8::String::Utf8Value& value) {
return *value ? *value : "<string conversion failed>";
}
// Compile a string within the current v8 context.
Local<UnboundScript> Shell::CompileString(
Isolate* isolate, Local<String> source, Local<Value> name,
v8::ScriptCompiler::CompileOptions compile_options) {
ScriptOrigin origin(name);
ScriptCompiler::Source script_source(source, origin);
Local<UnboundScript> script =
ScriptCompiler::CompileUnbound(isolate, &script_source, compile_options);
// Was caching requested & successful? Then compile again, now with cache.
if (script_source.GetCachedData()) {
if (compile_options == ScriptCompiler::kProduceCodeCache) {
compile_options = ScriptCompiler::kConsumeCodeCache;
} else if (compile_options == ScriptCompiler::kProduceParserCache) {
compile_options = ScriptCompiler::kConsumeParserCache;
} else {
DCHECK(false); // A new compile option?
}
ScriptCompiler::Source cached_source(
source, origin, new v8::ScriptCompiler::CachedData(
script_source.GetCachedData()->data,
script_source.GetCachedData()->length,
v8::ScriptCompiler::CachedData::BufferNotOwned));
script = ScriptCompiler::CompileUnbound(isolate, &cached_source,
compile_options);
}
return script;
}
// Executes a string within the current v8 context.
bool Shell::ExecuteString(Isolate* isolate,
Handle<String> source,
Handle<Value> name,
bool print_result,
bool report_exceptions) {
#ifndef V8_SHARED
bool FLAG_debugger = i::FLAG_debugger;
#else
bool FLAG_debugger = false;
#endif // !V8_SHARED
HandleScope handle_scope(isolate);
TryCatch try_catch;
options.script_executed = true;
if (FLAG_debugger) {
// When debugging make exceptions appear to be uncaught.
try_catch.SetVerbose(true);
}
Handle<UnboundScript> script =
Shell::CompileString(isolate, source, name, options.compile_options);
if (script.IsEmpty()) {
// Print errors that happened during compilation.
if (report_exceptions && !FLAG_debugger)
ReportException(isolate, &try_catch);
return false;
} else {
PerIsolateData* data = PerIsolateData::Get(isolate);
Local<Context> realm =
Local<Context>::New(isolate, data->realms_[data->realm_current_]);
realm->Enter();
Handle<Value> result = script->BindToCurrentContext()->Run();
realm->Exit();
data->realm_current_ = data->realm_switch_;
if (result.IsEmpty()) {
DCHECK(try_catch.HasCaught());
// Print errors that happened during execution.
if (report_exceptions && !FLAG_debugger)
ReportException(isolate, &try_catch);
return false;
} else {
DCHECK(!try_catch.HasCaught());
if (print_result) {
#if !defined(V8_SHARED)
if (options.test_shell) {
#endif
if (!result->IsUndefined()) {
// If all went well and the result wasn't undefined then print
// the returned value.
v8::String::Utf8Value str(result);
fwrite(*str, sizeof(**str), str.length(), stdout);
printf("\n");
}
#if !defined(V8_SHARED)
} else {
v8::TryCatch try_catch;
v8::Local<v8::Context> context =
v8::Local<v8::Context>::New(isolate, utility_context_);
v8::Context::Scope context_scope(context);
Handle<Object> global = context->Global();
Handle<Value> fun =
global->Get(String::NewFromUtf8(isolate, "Stringify"));
Handle<Value> argv[1] = { result };
Handle<Value> s = Handle<Function>::Cast(fun)->Call(global, 1, argv);
if (try_catch.HasCaught()) return true;
v8::String::Utf8Value str(s);
fwrite(*str, sizeof(**str), str.length(), stdout);
printf("\n");
}
#endif
}
return true;
}
}
}
PerIsolateData::RealmScope::RealmScope(PerIsolateData* data) : data_(data) {
data_->realm_count_ = 1;
data_->realm_current_ = 0;
data_->realm_switch_ = 0;
data_->realms_ = new Persistent<Context>[1];
data_->realms_[0].Reset(data_->isolate_,
data_->isolate_->GetEnteredContext());
}
PerIsolateData::RealmScope::~RealmScope() {
// Drop realms to avoid keeping them alive.
for (int i = 0; i < data_->realm_count_; ++i)
data_->realms_[i].Reset();
delete[] data_->realms_;
if (!data_->realm_shared_.IsEmpty())
data_->realm_shared_.Reset();
}
int PerIsolateData::RealmFind(Handle<Context> context) {
for (int i = 0; i < realm_count_; ++i) {
if (realms_[i] == context) return i;
}
return -1;
}
int PerIsolateData::RealmIndexOrThrow(
const v8::FunctionCallbackInfo<v8::Value>& args,
int arg_offset) {
if (args.Length() < arg_offset || !args[arg_offset]->IsNumber()) {
Throw(args.GetIsolate(), "Invalid argument");
return -1;
}
int index = args[arg_offset]->Int32Value();
if (index < 0 ||
index >= realm_count_ ||
realms_[index].IsEmpty()) {
Throw(args.GetIsolate(), "Invalid realm index");
return -1;
}
return index;
}
#ifndef V8_SHARED
// performance.now() returns a time stamp as double, measured in milliseconds.
// When FLAG_verify_predictable mode is enabled it returns current value
// of Heap::allocations_count().
void Shell::PerformanceNow(const v8::FunctionCallbackInfo<v8::Value>& args) {
if (i::FLAG_verify_predictable) {
Isolate* v8_isolate = args.GetIsolate();
i::Heap* heap = reinterpret_cast<i::Isolate*>(v8_isolate)->heap();
args.GetReturnValue().Set(heap->synthetic_time());
} else {
base::TimeDelta delta =
base::TimeTicks::HighResolutionNow() - kInitialTicks;
args.GetReturnValue().Set(delta.InMillisecondsF());
}
}
#endif // !V8_SHARED
// Realm.current() returns the index of the currently active realm.
void Shell::RealmCurrent(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
int index = data->RealmFind(isolate->GetEnteredContext());
if (index == -1) return;
args.GetReturnValue().Set(index);
}
// Realm.owner(o) returns the index of the realm that created o.
void Shell::RealmOwner(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
if (args.Length() < 1 || !args[0]->IsObject()) {
Throw(args.GetIsolate(), "Invalid argument");
return;
}
int index = data->RealmFind(args[0]->ToObject()->CreationContext());
if (index == -1) return;
args.GetReturnValue().Set(index);
}
// Realm.global(i) returns the global object of realm i.
// (Note that properties of global objects cannot be read/written cross-realm.)
void Shell::RealmGlobal(const v8::FunctionCallbackInfo<v8::Value>& args) {
PerIsolateData* data = PerIsolateData::Get(args.GetIsolate());
int index = data->RealmIndexOrThrow(args, 0);
if (index == -1) return;
args.GetReturnValue().Set(
Local<Context>::New(args.GetIsolate(), data->realms_[index])->Global());
}
// Realm.create() creates a new realm and returns its index.
void Shell::RealmCreate(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
Persistent<Context>* old_realms = data->realms_;
int index = data->realm_count_;
data->realms_ = new Persistent<Context>[++data->realm_count_];
for (int i = 0; i < index; ++i) {
data->realms_[i].Reset(isolate, old_realms[i]);
}
delete[] old_realms;
Handle<ObjectTemplate> global_template = CreateGlobalTemplate(isolate);
data->realms_[index].Reset(
isolate, Context::New(isolate, NULL, global_template));
args.GetReturnValue().Set(index);
}
// Realm.dispose(i) disposes the reference to the realm i.
void Shell::RealmDispose(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
int index = data->RealmIndexOrThrow(args, 0);
if (index == -1) return;
if (index == 0 ||
index == data->realm_current_ || index == data->realm_switch_) {
Throw(args.GetIsolate(), "Invalid realm index");
return;
}
data->realms_[index].Reset();
}
// Realm.switch(i) switches to the realm i for consecutive interactive inputs.
void Shell::RealmSwitch(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
int index = data->RealmIndexOrThrow(args, 0);
if (index == -1) return;
data->realm_switch_ = index;
}
// Realm.eval(i, s) evaluates s in realm i and returns the result.
void Shell::RealmEval(const v8::FunctionCallbackInfo<v8::Value>& args) {
Isolate* isolate = args.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
int index = data->RealmIndexOrThrow(args, 0);
if (index == -1) return;
if (args.Length() < 2 || !args[1]->IsString()) {
Throw(args.GetIsolate(), "Invalid argument");
return;
}
ScriptCompiler::Source script_source(args[1]->ToString());
Handle<UnboundScript> script = ScriptCompiler::CompileUnbound(
isolate, &script_source);
if (script.IsEmpty()) return;
Local<Context> realm = Local<Context>::New(isolate, data->realms_[index]);
realm->Enter();
Handle<Value> result = script->BindToCurrentContext()->Run();
realm->Exit();
args.GetReturnValue().Set(result);
}
// Realm.shared is an accessor for a single shared value across realms.
void Shell::RealmSharedGet(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
Isolate* isolate = info.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
if (data->realm_shared_.IsEmpty()) return;
info.GetReturnValue().Set(data->realm_shared_);
}
void Shell::RealmSharedSet(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
Isolate* isolate = info.GetIsolate();
PerIsolateData* data = PerIsolateData::Get(isolate);
data->realm_shared_.Reset(isolate, value);
}
void Shell::Print(const v8::FunctionCallbackInfo<v8::Value>& args) {
Write(args);
printf("\n");
fflush(stdout);
}
void Shell::Write(const v8::FunctionCallbackInfo<v8::Value>& args) {
for (int i = 0; i < args.Length(); i++) {
HandleScope handle_scope(args.GetIsolate());
if (i != 0) {
printf(" ");
}
// Explicitly catch potential exceptions in toString().
v8::TryCatch try_catch;
Handle<String> str_obj = args[i]->ToString();
if (try_catch.HasCaught()) {
try_catch.ReThrow();
return;
}
v8::String::Utf8Value str(str_obj);
int n = static_cast<int>(fwrite(*str, sizeof(**str), str.length(), stdout));
if (n != str.length()) {
printf("Error in fwrite\n");
Exit(1);
}
}
}
void Shell::Read(const v8::FunctionCallbackInfo<v8::Value>& args) {
String::Utf8Value file(args[0]);
if (*file == NULL) {
Throw(args.GetIsolate(), "Error loading file");
return;
}
Handle<String> source = ReadFile(args.GetIsolate(), *file);
if (source.IsEmpty()) {
Throw(args.GetIsolate(), "Error loading file");
return;
}
args.GetReturnValue().Set(source);
}
Handle<String> Shell::ReadFromStdin(Isolate* isolate) {
static const int kBufferSize = 256;
char buffer[kBufferSize];
Handle<String> accumulator = String::NewFromUtf8(isolate, "");
int length;
while (true) {
// Continue reading if the line ends with an escape '\\' or the line has
// not been fully read into the buffer yet (does not end with '\n').
// If fgets gets an error, just give up.
char* input = NULL;
input = fgets(buffer, kBufferSize, stdin);
if (input == NULL) return Handle<String>();
length = static_cast<int>(strlen(buffer));
if (length == 0) {
return accumulator;
} else if (buffer[length-1] != '\n') {
accumulator = String::Concat(
accumulator,
String::NewFromUtf8(isolate, buffer, String::kNormalString, length));
} else if (length > 1 && buffer[length-2] == '\\') {
buffer[length-2] = '\n';
accumulator = String::Concat(
accumulator, String::NewFromUtf8(isolate, buffer,
String::kNormalString, length - 1));
} else {
return String::Concat(
accumulator, String::NewFromUtf8(isolate, buffer,
String::kNormalString, length - 1));
}
}
}
void Shell::Load(const v8::FunctionCallbackInfo<v8::Value>& args) {
for (int i = 0; i < args.Length(); i++) {
HandleScope handle_scope(args.GetIsolate());
String::Utf8Value file(args[i]);
if (*file == NULL) {
Throw(args.GetIsolate(), "Error loading file");
return;
}
Handle<String> source = ReadFile(args.GetIsolate(), *file);
if (source.IsEmpty()) {
Throw(args.GetIsolate(), "Error loading file");
return;
}
if (!ExecuteString(args.GetIsolate(),
source,
String::NewFromUtf8(args.GetIsolate(), *file),
false,
true)) {
Throw(args.GetIsolate(), "Error executing file");
return;
}
}
}
void Shell::Quit(const v8::FunctionCallbackInfo<v8::Value>& args) {
int exit_code = args[0]->Int32Value();
OnExit();
exit(exit_code);
}
void Shell::Version(const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(
String::NewFromUtf8(args.GetIsolate(), V8::GetVersion()));
}
void Shell::ReportException(Isolate* isolate, v8::TryCatch* try_catch) {
HandleScope handle_scope(isolate);
#ifndef V8_SHARED
Handle<Context> utility_context;
bool enter_context = !isolate->InContext();
if (enter_context) {
utility_context = Local<Context>::New(isolate, utility_context_);
utility_context->Enter();
}
#endif // !V8_SHARED
v8::String::Utf8Value exception(try_catch->Exception());
const char* exception_string = ToCString(exception);
Handle<Message> message = try_catch->Message();
if (message.IsEmpty()) {
// V8 didn't provide any extra information about this error; just
// print the exception.
printf("%s\n", exception_string);
} else {
// Print (filename):(line number): (message).
v8::String::Utf8Value filename(message->GetScriptOrigin().ResourceName());
const char* filename_string = ToCString(filename);
int linenum = message->GetLineNumber();
printf("%s:%i: %s\n", filename_string, linenum, exception_string);
// Print line of source code.
v8::String::Utf8Value sourceline(message->GetSourceLine());
const char* sourceline_string = ToCString(sourceline);
printf("%s\n", sourceline_string);
// Print wavy underline (GetUnderline is deprecated).
int start = message->GetStartColumn();
for (int i = 0; i < start; i++) {
printf(" ");
}
int end = message->GetEndColumn();
for (int i = start; i < end; i++) {
printf("^");
}
printf("\n");
v8::String::Utf8Value stack_trace(try_catch->StackTrace());
if (stack_trace.length() > 0) {
const char* stack_trace_string = ToCString(stack_trace);
printf("%s\n", stack_trace_string);
}
}
printf("\n");
#ifndef V8_SHARED
if (enter_context) utility_context->Exit();
#endif // !V8_SHARED
}
#ifndef V8_SHARED
Handle<Array> Shell::GetCompletions(Isolate* isolate,
Handle<String> text,
Handle<String> full) {
EscapableHandleScope handle_scope(isolate);
v8::Local<v8::Context> utility_context =
v8::Local<v8::Context>::New(isolate, utility_context_);
v8::Context::Scope context_scope(utility_context);
Handle<Object> global = utility_context->Global();
Local<Value> fun =
global->Get(String::NewFromUtf8(isolate, "GetCompletions"));
static const int kArgc = 3;
v8::Local<v8::Context> evaluation_context =
v8::Local<v8::Context>::New(isolate, evaluation_context_);
Handle<Value> argv[kArgc] = { evaluation_context->Global(), text, full };
Local<Value> val = Local<Function>::Cast(fun)->Call(global, kArgc, argv);
return handle_scope.Escape(Local<Array>::Cast(val));
}
Local<Object> Shell::DebugMessageDetails(Isolate* isolate,
Handle<String> message) {
EscapableHandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Local<v8::Context>::New(isolate, utility_context_);
v8::Context::Scope context_scope(context);
Handle<Object> global = context->Global();
Handle<Value> fun =
global->Get(String::NewFromUtf8(isolate, "DebugMessageDetails"));
static const int kArgc = 1;
Handle<Value> argv[kArgc] = { message };
Handle<Value> val = Handle<Function>::Cast(fun)->Call(global, kArgc, argv);
return handle_scope.Escape(Local<Object>(Handle<Object>::Cast(val)));
}
Local<Value> Shell::DebugCommandToJSONRequest(Isolate* isolate,
Handle<String> command) {
EscapableHandleScope handle_scope(isolate);
v8::Local<v8::Context> context =
v8::Local<v8::Context>::New(isolate, utility_context_);
v8::Context::Scope context_scope(context);
Handle<Object> global = context->Global();
Handle<Value> fun =
global->Get(String::NewFromUtf8(isolate, "DebugCommandToJSONRequest"));
static const int kArgc = 1;
Handle<Value> argv[kArgc] = { command };
Handle<Value> val = Handle<Function>::Cast(fun)->Call(global, kArgc, argv);
return handle_scope.Escape(Local<Value>(val));
}
int32_t* Counter::Bind(const char* name, bool is_histogram) {
int i;
for (i = 0; i < kMaxNameSize - 1 && name[i]; i++)
name_[i] = static_cast<char>(name[i]);
name_[i] = '\0';
is_histogram_ = is_histogram;
return ptr();
}
void Counter::AddSample(int32_t sample) {
count_++;
sample_total_ += sample;
}
CounterCollection::CounterCollection() {
magic_number_ = 0xDEADFACE;
max_counters_ = kMaxCounters;
max_name_size_ = Counter::kMaxNameSize;
counters_in_use_ = 0;
}
Counter* CounterCollection::GetNextCounter() {
if (counters_in_use_ == kMaxCounters) return NULL;
return &counters_[counters_in_use_++];
}
void Shell::MapCounters(v8::Isolate* isolate, const char* name) {
counters_file_ = base::OS::MemoryMappedFile::create(
name, sizeof(CounterCollection), &local_counters_);
void* memory = (counters_file_ == NULL) ?
NULL : counters_file_->memory();
if (memory == NULL) {
printf("Could not map counters file %s\n", name);
Exit(1);
}
counters_ = static_cast<CounterCollection*>(memory);
isolate->SetCounterFunction(LookupCounter);
isolate->SetCreateHistogramFunction(CreateHistogram);
isolate->SetAddHistogramSampleFunction(AddHistogramSample);
}
int CounterMap::Hash(const char* name) {
int h = 0;
int c;
while ((c = *name++) != 0) {
h += h << 5;
h += c;
}
return h;
}
Counter* Shell::GetCounter(const char* name, bool is_histogram) {
Counter* counter = counter_map_->Lookup(name);
if (counter == NULL) {
counter = counters_->GetNextCounter();
if (counter != NULL) {
counter_map_->Set(name, counter);
counter->Bind(name, is_histogram);
}
} else {
DCHECK(counter->is_histogram() == is_histogram);
}
return counter;
}
int* Shell::LookupCounter(const char* name) {
Counter* counter = GetCounter(name, false);
if (counter != NULL) {
return counter->ptr();
} else {
return NULL;
}
}
void* Shell::CreateHistogram(const char* name,
int min,
int max,
size_t buckets) {
return GetCounter(name, true);
}
void Shell::AddHistogramSample(void* histogram, int sample) {
Counter* counter = reinterpret_cast<Counter*>(histogram);
counter->AddSample(sample);
}
void Shell::InstallUtilityScript(Isolate* isolate) {
HandleScope scope(isolate);
// If we use the utility context, we have to set the security tokens so that
// utility, evaluation and debug context can all access each other.
v8::Local<v8::Context> utility_context =
v8::Local<v8::Context>::New(isolate, utility_context_);
v8::Local<v8::Context> evaluation_context =
v8::Local<v8::Context>::New(isolate, evaluation_context_);
utility_context->SetSecurityToken(Undefined(isolate));
evaluation_context->SetSecurityToken(Undefined(isolate));
v8::Context::Scope context_scope(utility_context);
if (i::FLAG_debugger) printf("JavaScript debugger enabled\n");
// Install the debugger object in the utility scope
i::Debug* debug = reinterpret_cast<i::Isolate*>(isolate)->debug();
debug->Load();
i::Handle<i::Context> debug_context = debug->debug_context();
i::Handle<i::JSObject> js_debug
= i::Handle<i::JSObject>(debug_context->global_object());
utility_context->Global()->Set(String::NewFromUtf8(isolate, "$debug"),
Utils::ToLocal(js_debug));
debug_context->set_security_token(
reinterpret_cast<i::Isolate*>(isolate)->heap()->undefined_value());
// Run the d8 shell utility script in the utility context
int source_index = i::NativesCollection<i::D8>::GetIndex("d8");
i::Vector<const char> shell_source =
i::NativesCollection<i::D8>::GetRawScriptSource(source_index);
i::Vector<const char> shell_source_name =
i::NativesCollection<i::D8>::GetScriptName(source_index);
Handle<String> source =
String::NewFromUtf8(isolate, shell_source.start(), String::kNormalString,
shell_source.length());
Handle<String> name =
String::NewFromUtf8(isolate, shell_source_name.start(),
String::kNormalString, shell_source_name.length());
ScriptOrigin origin(name);
Handle<Script> script = Script::Compile(source, &origin);
script->Run();
// Mark the d8 shell script as native to avoid it showing up as normal source
// in the debugger.
i::Handle<i::Object> compiled_script = Utils::OpenHandle(*script);
i::Handle<i::Script> script_object = compiled_script->IsJSFunction()
? i::Handle<i::Script>(i::Script::cast(
i::JSFunction::cast(*compiled_script)->shared()->script()))
: i::Handle<i::Script>(i::Script::cast(
i::SharedFunctionInfo::cast(*compiled_script)->script()));
script_object->set_type(i::Smi::FromInt(i::Script::TYPE_NATIVE));
// Start the in-process debugger if requested.
if (i::FLAG_debugger) v8::Debug::SetDebugEventListener(HandleDebugEvent);
}
#endif // !V8_SHARED
#ifdef COMPRESS_STARTUP_DATA_BZ2
class BZip2Decompressor : public v8::StartupDataDecompressor {
public:
virtual ~BZip2Decompressor() { }
protected:
virtual int DecompressData(char* raw_data,
int* raw_data_size,
const char* compressed_data,
int compressed_data_size) {
DCHECK_EQ(v8::StartupData::kBZip2,
v8::V8::GetCompressedStartupDataAlgorithm());
unsigned int decompressed_size = *raw_data_size;
int result =
BZ2_bzBuffToBuffDecompress(raw_data,
&decompressed_size,
const_cast<char*>(compressed_data),
compressed_data_size,
0, 1);
if (result == BZ_OK) {
*raw_data_size = decompressed_size;
}
return result;
}
};
#endif
Handle<ObjectTemplate> Shell::CreateGlobalTemplate(Isolate* isolate) {
Handle<ObjectTemplate> global_template = ObjectTemplate::New(isolate);
global_template->Set(String::NewFromUtf8(isolate, "print"),
FunctionTemplate::New(isolate, Print));
global_template->Set(String::NewFromUtf8(isolate, "write"),
FunctionTemplate::New(isolate, Write));
global_template->Set(String::NewFromUtf8(isolate, "read"),
FunctionTemplate::New(isolate, Read));
global_template->Set(String::NewFromUtf8(isolate, "readbuffer"),
FunctionTemplate::New(isolate, ReadBuffer));
global_template->Set(String::NewFromUtf8(isolate, "readline"),
FunctionTemplate::New(isolate, ReadLine));
global_template->Set(String::NewFromUtf8(isolate, "load"),
FunctionTemplate::New(isolate, Load));
global_template->Set(String::NewFromUtf8(isolate, "quit"),
FunctionTemplate::New(isolate, Quit));
global_template->Set(String::NewFromUtf8(isolate, "version"),
FunctionTemplate::New(isolate, Version));
// Bind the Realm object.
Handle<ObjectTemplate> realm_template = ObjectTemplate::New(isolate);
realm_template->Set(String::NewFromUtf8(isolate, "current"),
FunctionTemplate::New(isolate, RealmCurrent));
realm_template->Set(String::NewFromUtf8(isolate, "owner"),
FunctionTemplate::New(isolate, RealmOwner));
realm_template->Set(String::NewFromUtf8(isolate, "global"),
FunctionTemplate::New(isolate, RealmGlobal));
realm_template->Set(String::NewFromUtf8(isolate, "create"),
FunctionTemplate::New(isolate, RealmCreate));
realm_template->Set(String::NewFromUtf8(isolate, "dispose"),
FunctionTemplate::New(isolate, RealmDispose));
realm_template->Set(String::NewFromUtf8(isolate, "switch"),
FunctionTemplate::New(isolate, RealmSwitch));
realm_template->Set(String::NewFromUtf8(isolate, "eval"),
FunctionTemplate::New(isolate, RealmEval));
realm_template->SetAccessor(String::NewFromUtf8(isolate, "shared"),
RealmSharedGet, RealmSharedSet);
global_template->Set(String::NewFromUtf8(isolate, "Realm"), realm_template);
#ifndef V8_SHARED
Handle<ObjectTemplate> performance_template = ObjectTemplate::New(isolate);
performance_template->Set(String::NewFromUtf8(isolate, "now"),
FunctionTemplate::New(isolate, PerformanceNow));
global_template->Set(String::NewFromUtf8(isolate, "performance"),
performance_template);
#endif // !V8_SHARED
Handle<ObjectTemplate> os_templ = ObjectTemplate::New(isolate);
AddOSMethods(isolate, os_templ);
global_template->Set(String::NewFromUtf8(isolate, "os"), os_templ);
return global_template;
}
void Shell::Initialize(Isolate* isolate) {
#ifdef COMPRESS_STARTUP_DATA_BZ2
BZip2Decompressor startup_data_decompressor;
int bz2_result = startup_data_decompressor.Decompress();
if (bz2_result != BZ_OK) {
fprintf(stderr, "bzip error code: %d\n", bz2_result);
Exit(1);
}
#endif
#ifndef V8_SHARED
Shell::counter_map_ = new CounterMap();
// Set up counters
if (i::StrLength(i::FLAG_map_counters) != 0)
MapCounters(isolate, i::FLAG_map_counters);
if (i::FLAG_dump_counters || i::FLAG_track_gc_object_stats) {
isolate->SetCounterFunction(LookupCounter);
isolate->SetCreateHistogramFunction(CreateHistogram);
isolate->SetAddHistogramSampleFunction(AddHistogramSample);
}
#endif // !V8_SHARED
}
void Shell::InitializeDebugger(Isolate* isolate) {
if (options.test_shell) return;
#ifndef V8_SHARED
HandleScope scope(isolate);
Handle<ObjectTemplate> global_template = CreateGlobalTemplate(isolate);
utility_context_.Reset(isolate,
Context::New(isolate, NULL, global_template));
#endif // !V8_SHARED
}
Local<Context> Shell::CreateEvaluationContext(Isolate* isolate) {
#ifndef V8_SHARED
// This needs to be a critical section since this is not thread-safe
base::LockGuard<base::Mutex> lock_guard(&context_mutex_);
#endif // !V8_SHARED
// Initialize the global objects
Handle<ObjectTemplate> global_template = CreateGlobalTemplate(isolate);
EscapableHandleScope handle_scope(isolate);
Local<Context> context = Context::New(isolate, NULL, global_template);
DCHECK(!context.IsEmpty());
Context::Scope scope(context);
#ifndef V8_SHARED
i::Factory* factory = reinterpret_cast<i::Isolate*>(isolate)->factory();
i::JSArguments js_args = i::FLAG_js_arguments;
i::Handle<i::FixedArray> arguments_array =
factory->NewFixedArray(js_args.argc);
for (int j = 0; j < js_args.argc; j++) {
i::Handle<i::String> arg =
factory->NewStringFromUtf8(i::CStrVector(js_args[j])).ToHandleChecked();
arguments_array->set(j, *arg);
}
i::Handle<i::JSArray> arguments_jsarray =
factory->NewJSArrayWithElements(arguments_array);
context->Global()->Set(String::NewFromUtf8(isolate, "arguments"),
Utils::ToLocal(arguments_jsarray));
#endif // !V8_SHARED
return handle_scope.Escape(context);
}
void Shell::Exit(int exit_code) {
// Use _exit instead of exit to avoid races between isolate
// threads and static destructors.
fflush(stdout);
fflush(stderr);
_exit(exit_code);
}
#ifndef V8_SHARED
struct CounterAndKey {
Counter* counter;
const char* key;
};
inline bool operator<(const CounterAndKey& lhs, const CounterAndKey& rhs) {
return strcmp(lhs.key, rhs.key) < 0;
}
#endif // !V8_SHARED
void Shell::OnExit() {
LineEditor* line_editor = LineEditor::Get();
if (line_editor) line_editor->Close();
#ifndef V8_SHARED
if (i::FLAG_dump_counters) {
int number_of_counters = 0;
for (CounterMap::Iterator i(counter_map_); i.More(); i.Next()) {
number_of_counters++;
}
CounterAndKey* counters = new CounterAndKey[number_of_counters];
int j = 0;
for (CounterMap::Iterator i(counter_map_); i.More(); i.Next(), j++) {
counters[j].counter = i.CurrentValue();
counters[j].key = i.CurrentKey();
}
std::sort(counters, counters + number_of_counters);
printf("+----------------------------------------------------------------+"
"-------------+\n");
printf("| Name |"
" Value |\n");
printf("+----------------------------------------------------------------+"
"-------------+\n");
for (j = 0; j < number_of_counters; j++) {
Counter* counter = counters[j].counter;
const char* key = counters[j].key;
if (counter->is_histogram()) {
printf("| c:%-60s | %11i |\n", key, counter->count());
printf("| t:%-60s | %11i |\n", key, counter->sample_total());
} else {
printf("| %-62s | %11i |\n", key, counter->count());
}
}
printf("+----------------------------------------------------------------+"
"-------------+\n");
delete [] counters;
}
delete counters_file_;
delete counter_map_;
#endif // !V8_SHARED
}
static FILE* FOpen(const char* path, const char* mode) {
#if defined(_MSC_VER) && (defined(_WIN32) || defined(_WIN64))
FILE* result;
if (fopen_s(&result, path, mode) == 0) {
return result;
} else {
return NULL;
}
#else
FILE* file = fopen(path, mode);
if (file == NULL) return NULL;
struct stat file_stat;
if (fstat(fileno(file), &file_stat) != 0) return NULL;
bool is_regular_file = ((file_stat.st_mode & S_IFREG) != 0);
if (is_regular_file) return file;
fclose(file);
return NULL;
#endif
}
static char* ReadChars(Isolate* isolate, const char* name, int* size_out) {
FILE* file = FOpen(name, "rb");
if (file == NULL) return NULL;
fseek(file, 0, SEEK_END);
int size = ftell(file);
rewind(file);
char* chars = new char[size + 1];
chars[size] = '\0';
for (int i = 0; i < size;) {
int read = static_cast<int>(fread(&chars[i], 1, size - i, file));
i += read;
}
fclose(file);
*size_out = size;
return chars;
}
struct DataAndPersistent {
uint8_t* data;
Persistent<ArrayBuffer> handle;
};
static void ReadBufferWeakCallback(
const v8::WeakCallbackData<ArrayBuffer, DataAndPersistent>& data) {
size_t byte_length = data.GetValue()->ByteLength();
data.GetIsolate()->AdjustAmountOfExternalAllocatedMemory(
-static_cast<intptr_t>(byte_length));
delete[] data.GetParameter()->data;
data.GetParameter()->handle.Reset();
delete data.GetParameter();
}
void Shell::ReadBuffer(const v8::FunctionCallbackInfo<v8::Value>& args) {
DCHECK(sizeof(char) == sizeof(uint8_t)); // NOLINT
String::Utf8Value filename(args[0]);
int length;
if (*filename == NULL) {
Throw(args.GetIsolate(), "Error loading file");
return;
}
Isolate* isolate = args.GetIsolate();
DataAndPersistent* data = new DataAndPersistent;
data->data = reinterpret_cast<uint8_t*>(
ReadChars(args.GetIsolate(), *filename, &length));
if (data->data == NULL) {
delete data;
Throw(args.GetIsolate(), "Error reading file");
return;
}
Handle<v8::ArrayBuffer> buffer =
ArrayBuffer::New(isolate, data->data, length);
data->handle.Reset(isolate, buffer);
data->handle.SetWeak(data, ReadBufferWeakCallback);
data->handle.MarkIndependent();
isolate->AdjustAmountOfExternalAllocatedMemory(length);
args.GetReturnValue().Set(buffer);
}
// Reads a file into a v8 string.
Handle<String> Shell::ReadFile(Isolate* isolate, const char* name) {
int size = 0;
char* chars = ReadChars(isolate, name, &size);
if (chars == NULL) return Handle<String>();
Handle<String> result =
String::NewFromUtf8(isolate, chars, String::kNormalString, size);
delete[] chars;
return result;
}
void Shell::RunShell(Isolate* isolate) {
HandleScope outer_scope(isolate);
v8::Local<v8::Context> context =
v8::Local<v8::Context>::New(isolate, evaluation_context_);
v8::Context::Scope context_scope(context);
PerIsolateData::RealmScope realm_scope(PerIsolateData::Get(isolate));
Handle<String> name = String::NewFromUtf8(isolate, "(d8)");
LineEditor* console = LineEditor::Get();
printf("V8 version %s [console: %s]\n", V8::GetVersion(), console->name());
console->Open(isolate);
while (true) {
HandleScope inner_scope(isolate);
Handle<String> input = console->Prompt(Shell::kPrompt);
if (input.IsEmpty()) break;
ExecuteString(isolate, input, name, true, true);
}
printf("\n");
}
SourceGroup::~SourceGroup() {
#ifndef V8_SHARED
delete thread_;
thread_ = NULL;
#endif // !V8_SHARED
}
void SourceGroup::Execute(Isolate* isolate) {
bool exception_was_thrown = false;
for (int i = begin_offset_; i < end_offset_; ++i) {
const char* arg = argv_[i];
if (strcmp(arg, "-e") == 0 && i + 1 < end_offset_) {
// Execute argument given to -e option directly.
HandleScope handle_scope(isolate);
Handle<String> file_name = String::NewFromUtf8(isolate, "unnamed");
Handle<String> source = String::NewFromUtf8(isolate, argv_[i + 1]);
if (!Shell::ExecuteString(isolate, source, file_name, false, true)) {
exception_was_thrown = true;
break;
}
++i;
} else if (arg[0] == '-') {
// Ignore other options. They have been parsed already.
} else {
// Use all other arguments as names of files to load and run.
HandleScope handle_scope(isolate);
Handle<String> file_name = String::NewFromUtf8(isolate, arg);
Handle<String> source = ReadFile(isolate, arg);
if (source.IsEmpty()) {
printf("Error reading '%s'\n", arg);
Shell::Exit(1);
}
if (!Shell::ExecuteString(isolate, source, file_name, false, true)) {
exception_was_thrown = true;
break;
}
}
}
if (exception_was_thrown != Shell::options.expected_to_throw) {
Shell::Exit(1);
}
}
Handle<String> SourceGroup::ReadFile(Isolate* isolate, const char* name) {
int size;
char* chars = ReadChars(isolate, name, &size);
if (chars == NULL) return Handle<String>();
Handle<String> result =
String::NewFromUtf8(isolate, chars, String::kNormalString, size);
delete[] chars;
return result;
}
#ifndef V8_SHARED
base::Thread::Options SourceGroup::GetThreadOptions() {
// On some systems (OSX 10.6) the stack size default is 0.5Mb or less
// which is not enough to parse the big literal expressions used in tests.
// The stack size should be at least StackGuard::kLimitSize + some
// OS-specific padding for thread startup code. 2Mbytes seems to be enough.
return base::Thread::Options("IsolateThread", 2 * MB);
}
void SourceGroup::ExecuteInThread() {
Isolate* isolate = Isolate::New();
do {
next_semaphore_.Wait();
{
Isolate::Scope iscope(isolate);
{
HandleScope scope(isolate);
PerIsolateData data(isolate);
Local<Context> context = Shell::CreateEvaluationContext(isolate);
{
Context::Scope cscope(context);
PerIsolateData::RealmScope realm_scope(PerIsolateData::Get(isolate));
Execute(isolate);
}
}
if (Shell::options.send_idle_notification) {
const int kLongIdlePauseInMs = 1000;
isolate->ContextDisposedNotification();
isolate->IdleNotification(kLongIdlePauseInMs);
}
if (Shell::options.invoke_weak_callbacks) {
// By sending a low memory notifications, we will try hard to collect
// all garbage and will therefore also invoke all weak callbacks of
// actually unreachable persistent handles.
isolate->LowMemoryNotification();
}
}
done_semaphore_.Signal();
} while (!Shell::options.last_run);
isolate->Dispose();
}
void SourceGroup::StartExecuteInThread() {
if (thread_ == NULL) {
thread_ = new IsolateThread(this);
thread_->Start();
}
next_semaphore_.Signal();
}
void SourceGroup::WaitForThread() {
if (thread_ == NULL) return;
if (Shell::options.last_run) {
thread_->Join();
} else {
done_semaphore_.Wait();
}
}
#endif // !V8_SHARED
void SetFlagsFromString(const char* flags) {
v8::V8::SetFlagsFromString(flags, static_cast<int>(strlen(flags)));
}
bool Shell::SetOptions(int argc, char* argv[]) {
bool logfile_per_isolate = false;
for (int i = 0; i < argc; i++) {
if (strcmp(argv[i], "--stress-opt") == 0) {
options.stress_opt = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--nostress-opt") == 0) {
options.stress_opt = false;
argv[i] = NULL;
} else if (strcmp(argv[i], "--stress-deopt") == 0) {
options.stress_deopt = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--mock-arraybuffer-allocator") == 0) {
options.mock_arraybuffer_allocator = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--noalways-opt") == 0) {
// No support for stressing if we can't use --always-opt.
options.stress_opt = false;
options.stress_deopt = false;
} else if (strcmp(argv[i], "--logfile-per-isolate") == 0) {
logfile_per_isolate = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--shell") == 0) {
options.interactive_shell = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--test") == 0) {
options.test_shell = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--send-idle-notification") == 0) {
options.send_idle_notification = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--invoke-weak-callbacks") == 0) {
options.invoke_weak_callbacks = true;
// TODO(jochen) See issue 3351
options.send_idle_notification = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "-f") == 0) {
// Ignore any -f flags for compatibility with other stand-alone
// JavaScript engines.
continue;
} else if (strcmp(argv[i], "--isolate") == 0) {
#ifdef V8_SHARED
printf("D8 with shared library does not support multi-threading\n");
return false;
#endif // V8_SHARED
options.num_isolates++;
} else if (strcmp(argv[i], "--dump-heap-constants") == 0) {
#ifdef V8_SHARED
printf("D8 with shared library does not support constant dumping\n");
return false;
#else
options.dump_heap_constants = true;
argv[i] = NULL;
#endif // V8_SHARED
} else if (strcmp(argv[i], "--throws") == 0) {
options.expected_to_throw = true;
argv[i] = NULL;
} else if (strncmp(argv[i], "--icu-data-file=", 16) == 0) {
options.icu_data_file = argv[i] + 16;
argv[i] = NULL;
#ifdef V8_SHARED
} else if (strcmp(argv[i], "--dump-counters") == 0) {
printf("D8 with shared library does not include counters\n");
return false;
} else if (strcmp(argv[i], "--debugger") == 0) {
printf("Javascript debugger not included\n");
return false;
#endif // V8_SHARED
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
} else if (strncmp(argv[i], "--natives_blob=", 15) == 0) {
options.natives_blob = argv[i] + 15;
argv[i] = NULL;
} else if (strncmp(argv[i], "--snapshot_blob=", 16) == 0) {
options.snapshot_blob = argv[i] + 16;
argv[i] = NULL;
#endif // V8_USE_EXTERNAL_STARTUP_DATA
} else if (strcmp(argv[i], "--cache") == 0 ||
strncmp(argv[i], "--cache=", 8) == 0) {
const char* value = argv[i] + 7;
if (!*value || strncmp(value, "=code", 6) == 0) {
options.compile_options = v8::ScriptCompiler::kProduceCodeCache;
} else if (strncmp(value, "=parse", 7) == 0) {
options.compile_options = v8::ScriptCompiler::kProduceParserCache;
} else if (strncmp(value, "=none", 6) == 0) {
options.compile_options = v8::ScriptCompiler::kNoCompileOptions;
} else {
printf("Unknown option to --cache.\n");
return false;
}
argv[i] = NULL;
}
}
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
// Set up isolated source groups.
options.isolate_sources = new SourceGroup[options.num_isolates];
SourceGroup* current = options.isolate_sources;
current->Begin(argv, 1);
for (int i = 1; i < argc; i++) {
const char* str = argv[i];
if (strcmp(str, "--isolate") == 0) {
current->End(i);
current++;
current->Begin(argv, i + 1);
} else if (strncmp(argv[i], "--", 2) == 0) {
printf("Warning: unknown flag %s.\nTry --help for options\n", argv[i]);
}
}
current->End(argc);
if (!logfile_per_isolate && options.num_isolates) {
SetFlagsFromString("--nologfile_per_isolate");
}
return true;
}
int Shell::RunMain(Isolate* isolate, int argc, char* argv[]) {
#ifndef V8_SHARED
for (int i = 1; i < options.num_isolates; ++i) {
options.isolate_sources[i].StartExecuteInThread();
}
#endif // !V8_SHARED
{
HandleScope scope(isolate);
Local<Context> context = CreateEvaluationContext(isolate);
if (options.last_run && options.use_interactive_shell()) {
// Keep using the same context in the interactive shell.
evaluation_context_.Reset(isolate, context);
#ifndef V8_SHARED
// If the interactive debugger is enabled make sure to activate
// it before running the files passed on the command line.
if (i::FLAG_debugger) {
InstallUtilityScript(isolate);
}
#endif // !V8_SHARED
}
{
Context::Scope cscope(context);
PerIsolateData::RealmScope realm_scope(PerIsolateData::Get(isolate));
options.isolate_sources[0].Execute(isolate);
}
}
if (options.send_idle_notification) {
const int kLongIdlePauseInMs = 1000;
isolate->ContextDisposedNotification();
isolate->IdleNotification(kLongIdlePauseInMs);
}
if (options.invoke_weak_callbacks) {
// By sending a low memory notifications, we will try hard to collect all
// garbage and will therefore also invoke all weak callbacks of actually
// unreachable persistent handles.
isolate->LowMemoryNotification();
}
#ifndef V8_SHARED
for (int i = 1; i < options.num_isolates; ++i) {
options.isolate_sources[i].WaitForThread();
}
#endif // !V8_SHARED
return 0;
}
#ifndef V8_SHARED
static void DumpHeapConstants(i::Isolate* isolate) {
i::Heap* heap = isolate->heap();
// Dump the INSTANCE_TYPES table to the console.
printf("# List of known V8 instance types.\n");
#define DUMP_TYPE(T) printf(" %d: \"%s\",\n", i::T, #T);
printf("INSTANCE_TYPES = {\n");
INSTANCE_TYPE_LIST(DUMP_TYPE)
printf("}\n");
#undef DUMP_TYPE
// Dump the KNOWN_MAP table to the console.
printf("\n# List of known V8 maps.\n");
#define ROOT_LIST_CASE(type, name, camel_name) \
if (n == NULL && o == heap->name()) n = #camel_name;
#define STRUCT_LIST_CASE(upper_name, camel_name, name) \
if (n == NULL && o == heap->name##_map()) n = #camel_name "Map";
i::HeapObjectIterator it(heap->map_space());
printf("KNOWN_MAPS = {\n");
for (i::Object* o = it.Next(); o != NULL; o = it.Next()) {
i::Map* m = i::Map::cast(o);
const char* n = NULL;
intptr_t p = reinterpret_cast<intptr_t>(m) & 0xfffff;
int t = m->instance_type();
ROOT_LIST(ROOT_LIST_CASE)
STRUCT_LIST(STRUCT_LIST_CASE)
if (n == NULL) continue;
printf(" 0x%05" V8PRIxPTR ": (%d, \"%s\"),\n", p, t, n);
}
printf("}\n");
#undef STRUCT_LIST_CASE
#undef ROOT_LIST_CASE
// Dump the KNOWN_OBJECTS table to the console.
printf("\n# List of known V8 objects.\n");
#define ROOT_LIST_CASE(type, name, camel_name) \
if (n == NULL && o == heap->name()) n = #camel_name;
i::OldSpaces spit(heap);
printf("KNOWN_OBJECTS = {\n");
for (i::PagedSpace* s = spit.next(); s != NULL; s = spit.next()) {
i::HeapObjectIterator it(s);
const char* sname = AllocationSpaceName(s->identity());
for (i::Object* o = it.Next(); o != NULL; o = it.Next()) {
const char* n = NULL;
intptr_t p = reinterpret_cast<intptr_t>(o) & 0xfffff;
ROOT_LIST(ROOT_LIST_CASE)
if (n == NULL) continue;
printf(" (\"%s\", 0x%05" V8PRIxPTR "): \"%s\",\n", sname, p, n);
}
}
printf("}\n");
#undef ROOT_LIST_CASE
}
#endif // !V8_SHARED
class ShellArrayBufferAllocator : 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 MockArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
virtual void* Allocate(size_t) OVERRIDE {
return malloc(0);
}
virtual void* AllocateUninitialized(size_t length) OVERRIDE {
return malloc(0);
}
virtual void Free(void* p, size_t) OVERRIDE {
free(p);
}
};
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
class StartupDataHandler {
public:
StartupDataHandler(const char* natives_blob,
const char* snapshot_blob) {
Load(natives_blob, &natives_, v8::V8::SetNativesDataBlob);
Load(snapshot_blob, &snapshot_, v8::V8::SetSnapshotDataBlob);
}
~StartupDataHandler() {
delete[] natives_.data;
delete[] snapshot_.data;
}
private:
void Load(const char* blob_file,
v8::StartupData* startup_data,
void (*setter_fn)(v8::StartupData*)) {
startup_data->data = NULL;
startup_data->compressed_size = 0;
startup_data->raw_size = 0;
if (!blob_file)
return;
FILE* file = fopen(blob_file, "rb");
if (!file)
return;
fseek(file, 0, SEEK_END);
startup_data->raw_size = ftell(file);
rewind(file);
startup_data->data = new char[startup_data->raw_size];
startup_data->compressed_size = fread(
const_cast<char*>(startup_data->data), 1, startup_data->raw_size,
file);
fclose(file);
if (startup_data->raw_size == startup_data->compressed_size)
(*setter_fn)(startup_data);
}
v8::StartupData natives_;
v8::StartupData snapshot_;
// Disallow copy & assign.
StartupDataHandler(const StartupDataHandler& other);
void operator=(const StartupDataHandler& other);
};
#endif // V8_USE_EXTERNAL_STARTUP_DATA
int Shell::Main(int argc, char* argv[]) {
if (!SetOptions(argc, argv)) return 1;
v8::V8::InitializeICU(options.icu_data_file);
v8::Platform* platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(platform);
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
StartupDataHandler startup_data(options.natives_blob, options.snapshot_blob);
#endif
SetFlagsFromString("--trace-hydrogen-file=hydrogen.cfg");
SetFlagsFromString("--redirect-code-traces-to=code.asm");
ShellArrayBufferAllocator array_buffer_allocator;
MockArrayBufferAllocator mock_arraybuffer_allocator;
if (options.mock_arraybuffer_allocator) {
v8::V8::SetArrayBufferAllocator(&mock_arraybuffer_allocator);
} else {
v8::V8::SetArrayBufferAllocator(&array_buffer_allocator);
}
int result = 0;
Isolate* isolate = Isolate::New();
#ifndef V8_SHARED
v8::ResourceConstraints constraints;
constraints.ConfigureDefaults(base::SysInfo::AmountOfPhysicalMemory(),
base::SysInfo::AmountOfVirtualMemory(),
base::SysInfo::NumberOfProcessors());
v8::SetResourceConstraints(isolate, &constraints);
#endif
DumbLineEditor dumb_line_editor(isolate);
{
Isolate::Scope scope(isolate);
Initialize(isolate);
#if !defined(V8_SHARED) && defined(ENABLE_GDB_JIT_INTERFACE)
if (i::FLAG_gdbjit) {
v8::V8::SetJitCodeEventHandler(v8::kJitCodeEventDefault,
i::GDBJITInterface::EventHandler);
}
#endif
#ifdef ENABLE_VTUNE_JIT_INTERFACE
vTune::InitializeVtuneForV8();
#endif
PerIsolateData data(isolate);
InitializeDebugger(isolate);
#ifndef V8_SHARED
if (options.dump_heap_constants) {
DumpHeapConstants(reinterpret_cast<i::Isolate*>(isolate));
return 0;
}
#endif
if (options.stress_opt || options.stress_deopt) {
Testing::SetStressRunType(options.stress_opt
? Testing::kStressTypeOpt
: Testing::kStressTypeDeopt);
int stress_runs = Testing::GetStressRuns();
for (int i = 0; i < stress_runs && result == 0; i++) {
printf("============ Stress %d/%d ============\n", i + 1, stress_runs);
Testing::PrepareStressRun(i);
options.last_run = (i == stress_runs - 1);
result = RunMain(isolate, argc, argv);
}
printf("======== Full Deoptimization =======\n");
Testing::DeoptimizeAll();
#if !defined(V8_SHARED)
} else if (i::FLAG_stress_runs > 0) {
int stress_runs = i::FLAG_stress_runs;
for (int i = 0; i < stress_runs && result == 0; i++) {
printf("============ Run %d/%d ============\n", i + 1, stress_runs);
options.last_run = (i == stress_runs - 1);
result = RunMain(isolate, argc, argv);
}
#endif
} else {
result = RunMain(isolate, argc, argv);
}
// Run interactive shell if explicitly requested or if no script has been
// executed, but never on --test
if (options.use_interactive_shell()) {
#ifndef V8_SHARED
if (!i::FLAG_debugger) {
InstallUtilityScript(isolate);
}
#endif // !V8_SHARED
RunShell(isolate);
}
}
isolate->Dispose();
V8::Dispose();
V8::ShutdownPlatform();
delete platform;
OnExit();
return result;
}
} // namespace v8
#ifndef GOOGLE3
int main(int argc, char* argv[]) {
return v8::Shell::Main(argc, argv);
}
#endif
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