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4f6f90f536
Allow add-ons to interrupt JavaScript execution, and wake up loop if it is currently idle. PR-URL: https://github.com/nodejs/node/pull/44362 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
#include <node.h>
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#include <v8.h>
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#include <thread> // NOLINT(build/c++11)
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using node::Environment;
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using v8::Context;
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using v8::FunctionCallbackInfo;
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using v8::HandleScope;
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using v8::Isolate;
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using v8::Local;
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using v8::Maybe;
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using v8::Object;
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using v8::String;
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using v8::Value;
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static std::thread interrupt_thread;
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void ScheduleInterrupt(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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HandleScope handle_scope(isolate);
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Environment* env = node::GetCurrentEnvironment(isolate->GetCurrentContext());
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interrupt_thread = std::thread([=]() {
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std::this_thread::sleep_for(std::chrono::seconds(1));
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node::RequestInterrupt(
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env,
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[](void* data) {
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// Interrupt is called from JS thread.
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interrupt_thread.join();
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exit(0);
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},
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nullptr);
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});
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}
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void ScheduleInterruptWithJS(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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HandleScope handle_scope(isolate);
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Environment* env = node::GetCurrentEnvironment(isolate->GetCurrentContext());
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interrupt_thread = std::thread([=]() {
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std::this_thread::sleep_for(std::chrono::seconds(1));
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node::RequestInterrupt(
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env,
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[](void* data) {
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// Interrupt is called from JS thread.
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interrupt_thread.join();
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Isolate* isolate = static_cast<Isolate*>(data);
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HandleScope handle_scope(isolate);
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Local<Context> ctx = isolate->GetCurrentContext();
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Local<String> str =
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String::NewFromUtf8(isolate, "interrupt").ToLocalChecked();
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// Calling into JS should abort immediately.
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Maybe<bool> result = ctx->Global()->Set(ctx, str, str);
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// Should not reach here.
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if (!result.IsNothing()) {
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// Called into JavaScript.
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exit(2);
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}
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// Maybe exception thrown.
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exit(1);
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},
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isolate);
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});
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}
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void init(Local<Object> exports) {
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NODE_SET_METHOD(exports, "scheduleInterrupt", ScheduleInterrupt);
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NODE_SET_METHOD(exports, "ScheduleInterruptWithJS", ScheduleInterruptWithJS);
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}
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NODE_MODULE(NODE_GYP_MODULE_NAME, init)
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