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#include "node_main_instance.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;
using v8::SealHandleScope;
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_.reset(new IsolateData(isolate_, event_loop, platform, nullptr));
IsolateSettings misc;
SetIsolateMiscHandlers(isolate_, misc);
}
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();
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);
deserialize_mode_ = per_isolate_data_indexes != nullptr;
// If the indexes are not nullptr, we are not deserializing
CHECK_IMPLIES(deserialize_mode_, params->external_references != nullptr);
isolate_data_.reset(new 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);
}
}
void NodeMainInstance::Dispose() {
CHECK(!owns_isolate_);
platform_->DrainTasks(isolate_);
}
NodeMainInstance::~NodeMainInstance() {
if (!owns_isolate_) {
return;
}
isolate_->Dispose();
platform_->UnregisterIsolate(isolate_);
}
int NodeMainInstance::Run() {
Locker locker(isolate_);
Isolate::Scope isolate_scope(isolate_);
HandleScope handle_scope(isolate_);
int exit_code = 0;
std::unique_ptr<Environment> env = CreateMainEnvironment(&exit_code);
CHECK_NOT_NULL(env);
Context::Scope context_scope(env->context());
if (exit_code == 0) {
{
InternalCallbackScope callback_scope(
env.get(),
Local<Object>(),
{ 1, 0 },
InternalCallbackScope::kAllowEmptyResource |
InternalCallbackScope::kSkipAsyncHooks);
LoadEnvironment(env.get());
}
env->set_trace_sync_io(env->options()->trace_sync_io);
{
SealHandleScope seal(isolate_);
bool more;
env->performance_state()->Mark(
node::performance::NODE_PERFORMANCE_MILESTONE_LOOP_START);
do {
uv_run(env->event_loop(), UV_RUN_DEFAULT);
per_process::v8_platform.DrainVMTasks(isolate_);
more = uv_loop_alive(env->event_loop());
if (more && !env->is_stopping()) continue;
if (!uv_loop_alive(env->event_loop())) {
EmitBeforeExit(env.get());
}
// Emit `beforeExit` if the loop became alive either after emitting
// event, or after running some callbacks.
more = uv_loop_alive(env->event_loop());
} while (more == true && !env->is_stopping());
env->performance_state()->Mark(
node::performance::NODE_PERFORMANCE_MILESTONE_LOOP_EXIT);
}
env->set_trace_sync_io(false);
exit_code = EmitExit(env.get());
}
env->set_can_call_into_js(false);
env->stop_sub_worker_contexts();
ResetStdio();
env->RunCleanup();
// 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
RunAtExit(env.get());
per_process::v8_platform.DrainVMTasks(isolate_);
#if defined(LEAK_SANITIZER)
__lsan_do_leak_check();
#endif
return exit_code;
}
// TODO(joyeecheung): align this with the CreateEnvironment exposed in node.h
// and the environment creation routine in workers somehow.
std::unique_ptr<Environment> NodeMainInstance::CreateMainEnvironment(
int* exit_code) {
*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);
}
Local<Context> context;
if (deserialize_mode_) {
context =
Context::FromSnapshot(isolate_, kNodeContextIndex).ToLocalChecked();
InitializeContextRuntime(context);
IsolateSettings s;
SetIsolateErrorHandlers(isolate_, s);
} else {
context = NewContext(isolate_);
}
CHECK(!context.IsEmpty());
Context::Scope context_scope(context);
std::unique_ptr<Environment> env = std::make_unique<Environment>(
isolate_data_.get(),
context,
args_,
exec_args_,
static_cast<Environment::Flags>(Environment::kIsMainThread |
Environment::kOwnsProcessState |
Environment::kOwnsInspector));
env->InitializeLibuv(per_process::v8_is_profiling);
env->InitializeDiagnostics();
// TODO(joyeecheung): when we snapshot the bootstrapped context,
// the inspector and diagnostics setup should after after deserialization.
#if HAVE_INSPECTOR
*exit_code = env->InitializeInspector({});
#endif
if (*exit_code != 0) {
return env;
}
if (env->RunBootstrapping().IsEmpty()) {
*exit_code = 1;
}
return env;
}
} // namespace node
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