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#include "node_main_instance.h"
#include "node_internals.h"
#include "node_options-inl.h"
#include "node_v8_platform-inl.h"
namespace node {
using v8::Context;
using v8::HandleScope;
using v8::Isolate;
using v8::Local;
using v8::Locker;
using v8::SealHandleScope;
NodeMainInstance::NodeMainInstance(uv_loop_t* event_loop,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args)
: args_(args),
exec_args_(exec_args),
array_buffer_allocator_(ArrayBufferAllocator::Create()),
isolate_(nullptr),
isolate_data_(nullptr) {
// TODO(joyeecheung): when we implement snapshot integration this needs to
// set params.external_references.
Isolate::CreateParams params;
params.array_buffer_allocator = array_buffer_allocator_.get();
isolate_ =
NewIsolate(¶ms, event_loop, per_process::v8_platform.Platform());
CHECK_NOT_NULL(isolate_);
isolate_data_.reset(CreateIsolateData(isolate_,
event_loop,
per_process::v8_platform.Platform(),
array_buffer_allocator_.get()));
}
NodeMainInstance::~NodeMainInstance() {
isolate_->Dispose();
per_process::v8_platform.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) {
{
AsyncCallbackScope callback_scope(env.get());
env->async_hooks()->push_async_ids(1, 0);
LoadEnvironment(env.get());
env->async_hooks()->pop_async_id(1);
}
{
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;
env->RunBeforeExitCallbacks();
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());
WaitForInspectorDisconnect(env.get());
}
env->set_can_call_into_js(false);
env->stop_sub_worker_contexts();
uv_tty_reset_mode();
env->RunCleanup();
RunAtExit(env.get());
per_process::v8_platform.DrainVMTasks(isolate_);
per_process::v8_platform.CancelVMTasks(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 = NewContext(isolate_);
Context::Scope context_scope(context);
std::unique_ptr<Environment> env = std::make_unique<Environment>(
isolate_data_.get(),
context,
static_cast<Environment::Flags>(Environment::kIsMainThread |
Environment::kOwnsProcessState |
Environment::kOwnsInspector));
env->InitializeLibuv(per_process::v8_is_profiling);
env->ProcessCliArgs(args_, exec_args_);
#if HAVE_INSPECTOR && NODE_USE_V8_PLATFORM
CHECK(!env->inspector_agent()->IsListening());
// Inspector agent can't fail to start, but if it was configured to listen
// right away on the websocket port and fails to bind/etc, this will return
// false.
env->inspector_agent()->Start(args_.size() > 1 ? args_[1].c_str() : "",
env->options()->debug_options(),
env->inspector_host_port(),
true);
if (env->options()->debug_options().inspector_enabled &&
!env->inspector_agent()->IsListening()) {
*exit_code = 12; // Signal internal error.
return env;
}
#else
// inspector_enabled can't be true if !HAVE_INSPECTOR or
// !NODE_USE_V8_PLATFORM
// - the option parser should not allow that.
CHECK(!env->options()->debug_options().inspector_enabled);
#endif // HAVE_INSPECTOR && NODE_USE_V8_PLATFORM
if (RunBootstrapping(env.get()).IsEmpty()) {
*exit_code = 1;
}
return env;
}
} // namespace node
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