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worker: pre-allocate thread id

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Allocate a thread id before actually creating the Environment instance.

PR-URL: https://github.com/nodejs/node/pull/26011
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
This commit is contained in:
Anna Henningsen 2019-02-08 19:22:35 +01:00
parent e11388b245
commit 58ba8bfc46
No known key found for this signature in database
GPG Key ID: 9C63F3A6CD2AD8F9
3 changed files with 16 additions and 6 deletions
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9
src/env.cc
View File

@ -169,9 +169,14 @@ void Environment::TrackingTraceStateObserver::UpdateTraceCategoryState() {
static std::atomic<uint64_t> next_thread_id{0};
uint64_t Environment::AllocateThreadId() {
return next_thread_id++;
}
Environment::Environment(IsolateData* isolate_data,
Local<Context> context,
Flags flags)
Flags flags,
uint64_t thread_id)
: isolate_(context->GetIsolate()),
isolate_data_(isolate_data),
immediate_info_(context->GetIsolate()),
@ -181,7 +186,7 @@ Environment::Environment(IsolateData* isolate_data,
trace_category_state_(isolate_, kTraceCategoryCount),
stream_base_state_(isolate_, StreamBase::kNumStreamBaseStateFields),
flags_(flags),
thread_id_(next_thread_id++),
thread_id_(thread_id == kNoThreadId ? AllocateThreadId() : thread_id),
fs_stats_field_array_(isolate_, kFsStatsBufferLength),
fs_stats_field_bigint_array_(isolate_, kFsStatsBufferLength),
context_(context->GetIsolate(), context) {

6
src/env.h
View File

@ -618,7 +618,8 @@ class Environment {
Environment(IsolateData* isolate_data,
v8::Local<v8::Context> context,
Flags flags = Flags());
Flags flags = Flags(),
uint64_t thread_id = kNoThreadId);
~Environment();
void Start(bool start_profiler_idle_notifier);
@ -763,6 +764,9 @@ class Environment {
inline bool has_run_bootstrapping_code() const;
inline void set_has_run_bootstrapping_code(bool has_run_bootstrapping_code);
static uint64_t AllocateThreadId();
static constexpr uint64_t kNoThreadId = -1;
inline bool is_main_thread() const;
inline bool owns_process_state() const;
inline bool owns_inspector() const;

7
src/node_worker.cc
View File

@ -71,7 +71,8 @@ Worker::Worker(Environment* env,
Local<Object> wrap,
const std::string& url,
std::shared_ptr<PerIsolateOptions> per_isolate_opts)
: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_WORKER), url_(url) {
: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_WORKER), url_(url),
thread_id_(Environment::AllocateThreadId()) {
Debug(this, "Creating new worker instance at %p", static_cast<void*>(this));
// Set up everything that needs to be set up in the parent environment.
@ -114,11 +115,11 @@ Worker::Worker(Environment* env,
Context::Scope context_scope(context);
// TODO(addaleax): Use CreateEnvironment(), or generally another public API.
env_.reset(new Environment(isolate_data_.get(), context));
env_.reset(new Environment(
isolate_data_.get(), context, Flags::kNoFlags, thread_id_));
CHECK_NOT_NULL(env_);
env_->set_abort_on_uncaught_exception(false);
env_->set_worker_context(this);
thread_id_ = env_->thread_id();
env_->Start(env->profiler_idle_notifier_started());
env_->ProcessCliArgs(std::vector<std::string>{},