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#include "node_main_instance.h"
#include <iostream>
#include <memory>
#include "debug_utils-inl.h"
#include "node_external_reference.h"
#include "node_internals.h"
#include "node_options-inl.h"
#include "node_v8_platform-inl.h"
#include "util-inl.h"
#if defined(LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#endif
#if HAVE_INSPECTOR
#include "inspector/worker_inspector.h" // ParentInspectorHandle
#endif
namespace node {
using v8::Context;
using v8::HandleScope;
using v8::Isolate;
using v8::Local;
using v8::Locker;
using v8::Object;
std::unique_ptr<ExternalReferenceRegistry> NodeMainInstance::registry_ =
nullptr;
NodeMainInstance::NodeMainInstance(Isolate* isolate,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args)
: args_(args),
exec_args_(exec_args),
array_buffer_allocator_(nullptr),
isolate_(isolate),
platform_(platform),
isolate_data_(nullptr),
owns_isolate_(false),
deserialize_mode_(false) {
isolate_data_ =
std::make_unique<IsolateData>(isolate_, event_loop, platform, nullptr);
SetIsolateMiscHandlers(isolate_, {});
}
const std::vector<intptr_t>& NodeMainInstance::CollectExternalReferences() {
// Cannot be called more than once.
CHECK_NULL(registry_);
registry_.reset(new ExternalReferenceRegistry());
return registry_->external_references();
}
std::unique_ptr<NodeMainInstance> NodeMainInstance::Create(
Isolate* isolate,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args) {
return std::unique_ptr<NodeMainInstance>(
new NodeMainInstance(isolate, event_loop, platform, args, exec_args));
}
NodeMainInstance::NodeMainInstance(
Isolate::CreateParams* params,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args,
const std::vector<size_t>* per_isolate_data_indexes)
: args_(args),
exec_args_(exec_args),
array_buffer_allocator_(ArrayBufferAllocator::Create()),
isolate_(nullptr),
platform_(platform),
isolate_data_(nullptr),
owns_isolate_(true) {
params->array_buffer_allocator = array_buffer_allocator_.get();
deserialize_mode_ = per_isolate_data_indexes != nullptr;
if (deserialize_mode_) {
// TODO(joyeecheung): collect external references and set it in
// params.external_references.
const std::vector<intptr_t>& external_references =
CollectExternalReferences();
params->external_references = external_references.data();
}
isolate_ = Isolate::Allocate();
CHECK_NOT_NULL(isolate_);
// Register the isolate on the platform before the isolate gets initialized,
// so that the isolate can access the platform during initialization.
platform->RegisterIsolate(isolate_, event_loop);
SetIsolateCreateParamsForNode(params);
Isolate::Initialize(isolate_, *params);
// If the indexes are not nullptr, we are not deserializing
CHECK_IMPLIES(deserialize_mode_, params->external_references != nullptr);
isolate_data_ = std::make_unique<IsolateData>(isolate_,
event_loop,
platform,
array_buffer_allocator_.get(),
per_isolate_data_indexes);
IsolateSettings s;
SetIsolateMiscHandlers(isolate_, s);
if (!deserialize_mode_) {
// If in deserialize mode, delay until after the deserialization is
// complete.
SetIsolateErrorHandlers(isolate_, s);
}
isolate_data_->max_young_gen_size =
params->constraints.max_young_generation_size_in_bytes();
}
void NodeMainInstance::Dispose() {
CHECK(!owns_isolate_);
platform_->DrainTasks(isolate_);
}
NodeMainInstance::~NodeMainInstance() {
if (!owns_isolate_) {
return;
}
platform_->UnregisterIsolate(isolate_);
isolate_->Dispose();
}
int NodeMainInstance::Run(const EnvSerializeInfo* env_info) {
Locker locker(isolate_);
Isolate::Scope isolate_scope(isolate_);
HandleScope handle_scope(isolate_);
int exit_code = 0;
DeleteFnPtr<Environment, FreeEnvironment> env =
CreateMainEnvironment(&exit_code, env_info);
CHECK_NOT_NULL(env);
{
Context::Scope context_scope(env->context());
if (exit_code == 0) {
LoadEnvironment(env.get(), StartExecutionCallback{});
exit_code = SpinEventLoop(env.get()).FromMaybe(1);
}
ResetStdio();
// TODO(addaleax): Neither NODE_SHARED_MODE nor HAVE_INSPECTOR really
// make sense here.
#if HAVE_INSPECTOR && defined(__POSIX__) && !defined(NODE_SHARED_MODE)
struct sigaction act;
memset(&act, 0, sizeof(act));
for (unsigned nr = 1; nr < kMaxSignal; nr += 1) {
if (nr == SIGKILL || nr == SIGSTOP || nr == SIGPROF)
continue;
act.sa_handler = (nr == SIGPIPE) ? SIG_IGN : SIG_DFL;
CHECK_EQ(0, sigaction(nr, &act, nullptr));
}
#endif
#if defined(LEAK_SANITIZER)
__lsan_do_leak_check();
#endif
}
return exit_code;
}
void DeserializeNodeInternalFields(Local<Object> holder,
int index,
v8::StartupData payload,
void* env) {
if (payload.raw_size == 0) {
holder->SetAlignedPointerInInternalField(index, nullptr);
return;
}
// No embedder object in the builtin snapshot yet.
UNREACHABLE();
}
DeleteFnPtr<Environment, FreeEnvironment>
NodeMainInstance::CreateMainEnvironment(int* exit_code,
const EnvSerializeInfo* env_info) {
*exit_code = 0; // Reset the exit code to 0
HandleScope handle_scope(isolate_);
// TODO(addaleax): This should load a real per-Isolate option, currently
// this is still effectively per-process.
if (isolate_data_->options()->track_heap_objects) {
isolate_->GetHeapProfiler()->StartTrackingHeapObjects(true);
}
CHECK_IMPLIES(deserialize_mode_, env_info != nullptr);
Local<Context> context;
DeleteFnPtr<Environment, FreeEnvironment> env;
if (deserialize_mode_) {
env.reset(new Environment(isolate_data_.get(),
isolate_,
args_,
exec_args_,
env_info,
EnvironmentFlags::kDefaultFlags,
{}));
context = Context::FromSnapshot(isolate_,
kNodeContextIndex,
{DeserializeNodeInternalFields, env.get()})
.ToLocalChecked();
InitializeContextRuntime(context);
SetIsolateErrorHandlers(isolate_, {});
} else {
context = NewContext(isolate_);
Context::Scope context_scope(context);
env.reset(new Environment(isolate_data_.get(),
context,
args_,
exec_args_,
nullptr,
EnvironmentFlags::kDefaultFlags,
{}));
}
CHECK(!context.IsEmpty());
Context::Scope context_scope(context);
env->InitializeMainContext(context, env_info);
#if HAVE_INSPECTOR
env->InitializeInspector({});
#endif
if (!deserialize_mode_ && env->RunBootstrapping().IsEmpty()) {
return nullptr;
}
CHECK(env->req_wrap_queue()->IsEmpty());
CHECK(env->handle_wrap_queue()->IsEmpty());
env->set_has_run_bootstrapping_code(true);
return env;
}
} // namespace node
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