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@mattn
Created Mar 24, 2011
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// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <v8.h>
#include <v8-testing.h>
#include <assert.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
// When building with V8 in a shared library we cannot use functions which
// is not explicitly a part of the public V8 API. This extensive use of
// #ifndef USING_V8_SHARED/#endif is a hack until we can resolve whether to
// still use the shell sample for testing or change to use the and the
// developer shell d8 TODO(1272).
#ifndef USING_V8_SHARED
#include "../src/v8.h"
#endif // USING_V8_SHARED
#if !defined(_WIN32) && !defined(_WIN64)
#include <unistd.h> // NOLINT
#endif
static void ExitShell(int exit_code) {
// Use _exit instead of exit to avoid races between isolate
// threads and static destructors.
fflush(stdout);
fflush(stderr);
_exit(exit_code);
}
v8::Persistent<v8::Context> CreateShellContext();
void RunShell(v8::Handle<v8::Context> context);
bool ExecuteString(v8::Handle<v8::String> source,
v8::Handle<v8::Value> name,
bool print_result,
bool report_exceptions);
v8::Handle<v8::Value> Print(const v8::Arguments& args);
v8::Handle<v8::Value> Read(const v8::Arguments& args);
v8::Handle<v8::Value> Load(const v8::Arguments& args);
v8::Handle<v8::Value> Quit(const v8::Arguments& args);
v8::Handle<v8::Value> Version(const v8::Arguments& args);
v8::Handle<v8::String> ReadFile(const char* name);
void ReportException(v8::TryCatch* handler);
class FooImpl {
private:
std::string value;
public:
FooImpl() {}
~FooImpl() {}
void SetValue(const std::string v) {
this->value = v;
}
const std::string GetValue() const {
return this->value;
}
void ConcatValue(const std::string v) {
this->value += v;
}
};
static v8::Handle<v8::Value> Foo_getValue(v8::Local<v8::String> propertyName, const v8::AccessorInfo& info) {
FooImpl* foo = static_cast<FooImpl*>(v8::Local<v8::External>::Cast(info.Holder()->GetInternalField(0))->Value());
return v8::String::New(foo->GetValue().c_str());
}
static void Foo_setValue(v8::Local<v8::String> propertyName, v8::Local<v8::Value> value, const v8::AccessorInfo& info) {
FooImpl* foo = static_cast<FooImpl*>(v8::Local<v8::External>::Cast(info.Holder()->GetInternalField(0))->Value());
v8::String::Utf8Value utf8str(value);
foo->SetValue(*utf8str);
}
static v8::Handle<v8::Value> Foo_concat(const v8::Arguments& args) {
FooImpl* foo = static_cast<FooImpl*>(v8::Local<v8::External>::Cast(args.This()->GetInternalField(0))->Value());
v8::String::Utf8Value utf8str(args[0]);
foo->ConcatValue(*utf8str);
return v8::Undefined();
}
static void Foo_Dispose(v8::Persistent<v8::Value> handle, void* parameter) {
FooImpl* foo = static_cast<FooImpl*>(parameter);
printf("destruct Foo: %p\n", foo);
delete foo;
handle.Dispose();
}
static v8::Handle<v8::Value> Foo_Construct(const v8::Arguments& args) {
FooImpl* foo = new FooImpl();
printf("construct Foo: %p\n", foo);
v8::Local<v8::Object> thisObject = args.This();
thisObject->SetInternalField(0, v8::External::New(foo));
v8::Persistent<v8::Object> holder = v8::Persistent<v8::Object>::New(thisObject);
holder.MakeWeak(foo, Foo_Dispose);
return thisObject;
}
static bool last_run = true;
class SourceGroup {
public:
SourceGroup() :
#ifndef USING_V8_SHARED
next_semaphore_(v8::internal::OS::CreateSemaphore(0)),
done_semaphore_(v8::internal::OS::CreateSemaphore(0)),
thread_(NULL),
#endif // USING_V8_SHARED
argv_(NULL),
begin_offset_(0),
end_offset_(0) { }
void Begin(char** argv, int offset) {
argv_ = const_cast<const char**>(argv);
begin_offset_ = offset;
}
void End(int offset) { end_offset_ = offset; }
void Execute() {
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.
v8::HandleScope handle_scope;
v8::Handle<v8::String> file_name = v8::String::New("unnamed");
v8::Handle<v8::String> source = v8::String::New(argv_[i + 1]);
if (!ExecuteString(source, file_name, false, true)) {
ExitShell(1);
return;
}
++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.
v8::HandleScope handle_scope;
v8::Handle<v8::String> file_name = v8::String::New(arg);
v8::Handle<v8::String> source = ReadFile(arg);
if (source.IsEmpty()) {
printf("Error reading '%s'\n", arg);
}
if (!ExecuteString(source, file_name, false, true)) {
ExitShell(1);
return;
}
}
}
}
#ifndef USING_V8_SHARED
void StartExecuteInThread() {
if (thread_ == NULL) {
thread_ = new IsolateThread(this);
thread_->Start();
}
next_semaphore_->Signal();
}
void WaitForThread() {
if (thread_ == NULL) return;
if (last_run) {
thread_->Join();
thread_ = NULL;
} else {
done_semaphore_->Wait();
}
}
#endif // USING_V8_SHARED
private:
#ifndef USING_V8_SHARED
static v8::internal::Thread::Options GetThreadOptions() {
v8::internal::Thread::Options options;
options.name = "IsolateThread";
// 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.
options.stack_size = 2 << 20; // 2 Mb seems to be enough
return options;
}
class IsolateThread : public v8::internal::Thread {
public:
explicit IsolateThread(SourceGroup* group)
: group_(group), v8::internal::Thread(NULL, GetThreadOptions()) {}
virtual void Run() {
group_->ExecuteInThread();
}
private:
SourceGroup* group_;
};
void ExecuteInThread() {
v8::Isolate* isolate = v8::Isolate::New();
do {
if (next_semaphore_ != NULL) next_semaphore_->Wait();
{
v8::Isolate::Scope iscope(isolate);
v8::HandleScope scope;
v8::Persistent<v8::Context> context = CreateShellContext();
{
v8::Context::Scope cscope(context);
Execute();
}
context.Dispose();
}
if (done_semaphore_ != NULL) done_semaphore_->Signal();
} while (!last_run);
isolate->Dispose();
}
v8::internal::Semaphore* next_semaphore_;
v8::internal::Semaphore* done_semaphore_;
v8::internal::Thread* thread_;
#endif // USING_V8_SHARED
const char** argv_;
int begin_offset_;
int end_offset_;
};
static SourceGroup* isolate_sources = NULL;
int RunMain(int argc, char* argv[]) {
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
v8::HandleScope handle_scope;
v8::Persistent<v8::Context> context = CreateShellContext();
// Enter the newly created execution environment.
context->Enter();
if (context.IsEmpty()) {
printf("Error creating context\n");
return 1;
}
bool run_shell = (argc == 1);
int num_isolates = 1;
for (int i = 1; i < argc; i++) {
if (strcmp(argv[i], "--isolate") == 0) {
#ifndef USING_V8_SHARED
++num_isolates;
#else // USING_V8_SHARED
printf("Error: --isolate not supported when linked with shared "
"library\n");
ExitShell(1);
#endif // USING_V8_SHARED
}
}
if (isolate_sources == NULL) {
isolate_sources = new SourceGroup[num_isolates];
SourceGroup* current = 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 (strcmp(str, "--shell") == 0) {
run_shell = true;
} else if (strcmp(str, "-f") == 0) {
// Ignore any -f flags for compatibility with the other stand-
// alone JavaScript engines.
continue;
} else if (strncmp(str, "--", 2) == 0) {
printf("Warning: unknown flag %s.\nTry --help for options\n", str);
}
}
current->End(argc);
}
#ifndef USING_V8_SHARED
for (int i = 1; i < num_isolates; ++i) {
isolate_sources[i].StartExecuteInThread();
}
#endif // USING_V8_SHARED
isolate_sources[0].Execute();
if (run_shell) RunShell(context);
#ifndef USING_V8_SHARED
for (int i = 1; i < num_isolates; ++i) {
isolate_sources[i].WaitForThread();
}
#endif // USING_V8_SHARED
if (last_run) {
delete[] isolate_sources;
isolate_sources = NULL;
}
context->Exit();
context.Dispose();
return 0;
}
int main(int argc, char* argv[]) {
// Figure out if we're requested to stress the optimization
// infrastructure by running tests multiple times and forcing
// optimization in the last run.
bool FLAG_stress_opt = false;
bool FLAG_stress_deopt = false;
for (int i = 0; i < argc; i++) {
if (strcmp(argv[i], "--stress-opt") == 0) {
FLAG_stress_opt = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--stress-deopt") == 0) {
FLAG_stress_deopt = true;
argv[i] = NULL;
} else if (strcmp(argv[i], "--noalways-opt") == 0) {
// No support for stressing if we can't use --always-opt.
FLAG_stress_opt = false;
FLAG_stress_deopt = false;
break;
}
}
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
int result = 0;
if (FLAG_stress_opt || FLAG_stress_deopt) {
v8::Testing::SetStressRunType(FLAG_stress_opt
? v8::Testing::kStressTypeOpt
: v8::Testing::kStressTypeDeopt);
int stress_runs = v8::Testing::GetStressRuns();
for (int i = 0; i < stress_runs && result == 0; i++) {
printf("============ Stress %d/%d ============\n",
i + 1, stress_runs);
v8::Testing::PrepareStressRun(i);
last_run = (i == stress_runs - 1);
result = RunMain(argc, argv);
}
printf("======== Full Deoptimization =======\n");
v8::Testing::DeoptimizeAll();
} else {
result = RunMain(argc, argv);
}
v8::V8::Dispose();
return result;
}
// Extracts a C string from a V8 Utf8Value.
const char* ToCString(const v8::String::Utf8Value& value) {
return *value ? *value : "<string conversion failed>";
}
// Creates a new execution environment containing the built-in
// functions.
v8::Persistent<v8::Context> CreateShellContext() {
// Create a template for the global object.
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
// Bind the global 'print' function to the C++ Print callback.
global->Set(v8::String::New("print"), v8::FunctionTemplate::New(Print));
// Bind the global 'read' function to the C++ Read callback.
global->Set(v8::String::New("read"), v8::FunctionTemplate::New(Read));
// Bind the global 'load' function to the C++ Load callback.
global->Set(v8::String::New("load"), v8::FunctionTemplate::New(Load));
// Bind the 'quit' function
global->Set(v8::String::New("quit"), v8::FunctionTemplate::New(Quit));
// Bind the 'version' function
global->Set(v8::String::New("version"), v8::FunctionTemplate::New(Version));
// Make class template
v8::Local<v8::FunctionTemplate> clazz = v8::FunctionTemplate::New(Foo_Construct);
clazz->SetClassName(v8::String::New("Foo"));
// Make instance template
v8::Local<v8::ObjectTemplate> instanceTmpl = clazz->InstanceTemplate();
instanceTmpl->SetInternalFieldCount(1); // Store internal
instanceTmpl->SetAccessor(v8::String::New("value"), Foo_getValue, Foo_setValue); // Accessor
// Make method
v8::Local<v8::ObjectTemplate> prototypeTmpl = clazz->PrototypeTemplate();
prototypeTmpl->Set("concat", v8::FunctionTemplate::New(Foo_concat));
global->Set(v8::String::New("Foo"), clazz);
return v8::Context::New(NULL, global);
}
// The callback that is invoked by v8 whenever the JavaScript 'print'
// function is called. Prints its arguments on stdout separated by
// spaces and ending with a newline.
v8::Handle<v8::Value> Print(const v8::Arguments& args) {
bool first = true;
for (int i = 0; i < args.Length(); i++) {
v8::HandleScope handle_scope;
if (first) {
first = false;
} else {
printf(" ");
}
v8::String::Utf8Value str(args[i]);
const char* cstr = ToCString(str);
printf("%s", cstr);
}
printf("\n");
fflush(stdout);
return v8::Undefined();
}
// The callback that is invoked by v8 whenever the JavaScript 'read'
// function is called. This function loads the content of the file named in
// the argument into a JavaScript string.
v8::Handle<v8::Value> Read(const v8::Arguments& args) {
if (args.Length() != 1) {
return v8::ThrowException(v8::String::New("Bad parameters"));
}
v8::String::Utf8Value file(args[0]);
if (*file == NULL) {
return v8::ThrowException(v8::String::New("Error loading file"));
}
v8::Handle<v8::String> source = ReadFile(*file);
if (source.IsEmpty()) {
return v8::ThrowException(v8::String::New("Error loading file"));
}
return source;
}
// The callback that is invoked by v8 whenever the JavaScript 'load'
// function is called. Loads, compiles and executes its argument
// JavaScript file.
v8::Handle<v8::Value> Load(const v8::Arguments& args) {
for (int i = 0; i < args.Length(); i++) {
v8::HandleScope handle_scope;
v8::String::Utf8Value file(args[i]);
if (*file == NULL) {
return v8::ThrowException(v8::String::New("Error loading file"));
}
v8::Handle<v8::String> source = ReadFile(*file);
if (source.IsEmpty()) {
return v8::ThrowException(v8::String::New("Error loading file"));
}
if (!ExecuteString(source, v8::String::New(*file), false, false)) {
return v8::ThrowException(v8::String::New("Error executing file"));
}
}
return v8::Undefined();
}
// The callback that is invoked by v8 whenever the JavaScript 'quit'
// function is called. Quits.
v8::Handle<v8::Value> Quit(const v8::Arguments& args) {
// If not arguments are given args[0] will yield undefined which
// converts to the integer value 0.
int exit_code = args[0]->Int32Value();
ExitShell(exit_code);
return v8::Undefined();
}
v8::Handle<v8::Value> Version(const v8::Arguments& args) {
return v8::String::New(v8::V8::GetVersion());
}
// Reads a file into a v8 string.
v8::Handle<v8::String> ReadFile(const char* name) {
FILE* file = fopen(name, "rb");
if (file == NULL) return v8::Handle<v8::String>();
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 = fread(&chars[i], 1, size - i, file);
i += read;
}
fclose(file);
v8::Handle<v8::String> result = v8::String::New(chars, size);
delete[] chars;
return result;
}
// The read-eval-execute loop of the shell.
void RunShell(v8::Handle<v8::Context> context) {
printf("V8 version %s\n", v8::V8::GetVersion());
static const int kBufferSize = 256;
// Enter the execution environment before evaluating any code.
v8::Context::Scope context_scope(context);
while (true) {
char buffer[kBufferSize];
printf("> ");
char* str = fgets(buffer, kBufferSize, stdin);
if (str == NULL) break;
v8::HandleScope handle_scope;
ExecuteString(v8::String::New(str),
v8::String::New("(shell)"),
true,
true);
// Notify idle
while (!v8::V8::IdleNotification());
}
printf("\n");
}
// Executes a string within the current v8 context.
bool ExecuteString(v8::Handle<v8::String> source,
v8::Handle<v8::Value> name,
bool print_result,
bool report_exceptions) {
v8::HandleScope handle_scope;
v8::TryCatch try_catch;
v8::Handle<v8::Script> script = v8::Script::Compile(source, name);
if (script.IsEmpty()) {
// Print errors that happened during compilation.
if (report_exceptions)
ReportException(&try_catch);
return false;
} else {
v8::Handle<v8::Value> result = script->Run();
if (result.IsEmpty()) {
assert(try_catch.HasCaught());
// Print errors that happened during execution.
if (report_exceptions)
ReportException(&try_catch);
return false;
} else {
assert(!try_catch.HasCaught());
if (print_result && !result->IsUndefined()) {
// If all went well and the result wasn't undefined then print
// the returned value.
v8::String::Utf8Value str(result);
const char* cstr = ToCString(str);
printf("%s\n", cstr);
}
return true;
}
}
}
void ReportException(v8::TryCatch* try_catch) {
v8::HandleScope handle_scope;
v8::String::Utf8Value exception(try_catch->Exception());
const char* exception_string = ToCString(exception);
v8::Handle<v8::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->GetScriptResourceName());
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);
}
}
}
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