AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity
7b7bb25a24
v8/src/d8.cc
vogelheim@chromium.org 7b7bb25a24 Support external startup data in V8. 
[Re-retry of r21696 and r21739]

If the embedder chooses, the 'natives' (library sources) and the
precompiled startup blob can be written to files during the build
process and handed over to V8 at startup. The main purpose would be
to reduce the size of the compiled binary for space constrained
platforms.

The build-time option is off by default. Nothing should change if
it's not enabled.

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/334913004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21941 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-06-23 13:52:17 +00:00

1643 lines
52 KiB
C++
Raw Blame History

// 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
#ifdef ENABLE_VTUNE_JIT_INTERFACE
#include "src/third_party/vtune/v8-vtune.h"
#endif
#include "src/d8.h"
#ifndef V8_SHARED
#include "src/api.h"
#include "src/checks.h"
#include "src/cpu.h"
#include "src/d8-debug.h"
#include "src/debug.h"
#include "src/natives.h"
#include "src/platform.h"
#include "src/v8.h"
#endif // !V8_SHARED
#if !defined(_WIN32) && !defined(_WIN64)
#include <unistd.h> // NOLINT
#endif
#ifndef ASSERT
#define ASSERT(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_;
i::OS::MemoryMappedFile* Shell::counters_file_ = NULL;
CounterCollection Shell::local_counters_;
CounterCollection* Shell::counters_ = &local_counters_;
i::Mutex Shell::context_mutex_;
const i::TimeTicks Shell::kInitialTicks = i::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>";
}
// 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);
}
ScriptOrigin origin(name);
ScriptCompiler::Source script_source(source, origin);
Handle<UnboundScript> script =
ScriptCompiler::CompileUnbound(isolate, &script_source);
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()) {
ASSERT(try_catch.HasCaught());
// Print errors that happened during execution.
if (report_exceptions && !FLAG_debugger)
ReportException(isolate, &try_catch);
return false;
} else {
ASSERT(!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 {
i::TimeDelta delta = i::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(const char* name) {
counters_file_ = i::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);
V8::SetCounterFunction(LookupCounter);
V8::SetCreateHistogramFunction(CreateHistogram);
V8::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 {
ASSERT(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) {
ASSERT_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
#if !defined(V8_SHARED) && !defined(_WIN32) && !defined(_WIN64)
Handle<ObjectTemplate> os_templ = ObjectTemplate::New(isolate);
AddOSMethods(isolate, os_templ);
global_template->Set(String::NewFromUtf8(isolate, "os"), os_templ);
#endif // !V8_SHARED && !_WIN32 && !_WIN64
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(i::FLAG_map_counters);
if (i::FLAG_dump_counters || i::FLAG_track_gc_object_stats) {
V8::SetCounterFunction(LookupCounter);
V8::SetCreateHistogramFunction(CreateHistogram);
V8::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
i::LockGuard<i::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);
ASSERT(!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) {
ASSERT(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
i::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 i::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;
V8::ContextDisposedNotification();
V8::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.
V8::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
}
}
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;
V8::ContextDisposedNotification();
V8::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.
V8::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) V8_OVERRIDE {
return malloc(0);
}
virtual void* AllocateUninitialized(size_t length) V8_OVERRIDE {
return malloc(0);
}
virtual void Free(void* p, size_t) V8_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);
#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(i::OS::TotalPhysicalMemory(),
i::OS::MaxVirtualMemory(),
i::OS::NumberOfProcessorsOnline());
v8::SetResourceConstraints(isolate, &constraints);
#endif
DumbLineEditor dumb_line_editor(isolate);
{
Isolate::Scope scope(isolate);
Initialize(isolate);
#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();
OnExit();
return result;
}
} // namespace v8
#ifndef GOOGLE3
int main(int argc, char* argv[]) {
return v8::Shell::Main(argc, argv);
}
#endif
Reference in New Issue View Git Blame Copy Permalink