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#ifndef SRC_NODE_WORKER_H_
#define SRC_NODE_WORKER_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "node_messaging.h"
#include <unordered_map>
namespace node {
namespace worker {
class WorkerThreadData;
// A worker thread, as represented in its parent thread.
class Worker : public AsyncWrap {
public:
Worker(Environment* env,
v8::Local<v8::Object> wrap,
const std::string& url,
std::shared_ptr<PerIsolateOptions> per_isolate_opts);
~Worker();
// Run the worker. This is only called from the worker thread.
void Run();
// Forcibly exit the thread with a specified exit code. This may be called
// from any thread.
void Exit(int code);
// Wait for the worker thread to stop (in a blocking manner).
void JoinThread();
void MemoryInfo(MemoryTracker* tracker) const override {
tracker->TrackFieldWithSize(
"isolate_data", sizeof(IsolateData), "IsolateData");
tracker->TrackFieldWithSize("env", sizeof(Environment), "Environment");
tracker->TrackField("thread_exit_async", *thread_exit_async_);
tracker->TrackField("parent_port", parent_port_);
}
SET_MEMORY_INFO_NAME(Worker)
SET_SELF_SIZE(Worker)
bool is_stopped() const;
static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
static void StartThread(const v8::FunctionCallbackInfo<v8::Value>& args);
static void StopThread(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Ref(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Unref(const v8::FunctionCallbackInfo<v8::Value>& args);
private:
void OnThreadStopped();
const std::string url_;
std::shared_ptr<PerIsolateOptions> per_isolate_opts_;
MultiIsolatePlatform* platform_;
v8::Isolate* isolate_ = nullptr;
bool profiler_idle_notifier_started_;
uv_thread_t tid_;
#if NODE_USE_V8_PLATFORM && HAVE_INSPECTOR
std::unique_ptr<inspector::ParentInspectorHandle> inspector_parent_handle_;
#endif
// This mutex protects access to all variables listed below it.
mutable Mutex mutex_;
// Currently only used for telling the parent thread that the child
// thread exited.
std::unique_ptr<uv_async_t> thread_exit_async_;
bool scheduled_on_thread_stopped_ = false;
// This mutex only protects stopped_. If both locks are acquired, this needs
// to be the latter one.
mutable Mutex stopped_mutex_;
bool stopped_ = true;
bool thread_joined_ = true;
int exit_code_ = 0;
uint64_t thread_id_ = -1;
uintptr_t stack_base_;
// Full size of the thread's stack.
static constexpr size_t kStackSize = 4 * 1024 * 1024;
// Stack buffer size that is not available to the JS engine.
static constexpr size_t kStackBufferSize = 192 * 1024;
std::unique_ptr<MessagePortData> child_port_data_;
// The child port is kept alive by the child Environment's persistent
// handle to it, as long as that child Environment exists.
MessagePort* child_port_ = nullptr;
// This is always kept alive because the JS object associated with the Worker
// instance refers to it via its [kPort] property.
MessagePort* parent_port_ = nullptr;
friend class WorkerThreadData;
};
} // namespace worker
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_NODE_WORKER_H_
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