node-api: add unit test

Author: gabrielschulhof

test/node-api/test_threadsafe_function_shutdown/binding.cc

@@ -0,0 +1,86 @@
+#include <js_native_api.h>
+#include <node_api.h>
+#include <node_api_types.h>
+
+#include <cstdio>
+#include <cstdlib>
+#include <memory>
+#include <thread>  // NOLINT(build/c++11)
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+template <typename R, auto func, typename... Args>
+inline auto call(const char* name, Args&&... args) -> R {
+  napi_status status;
+  if constexpr (std::is_same_v<R, void>) {
+    status = func(std::forward<Args>(args)...);
+    if (status == napi_ok) {
+      return;
+    }
+  } else {
+    R ret;
+    status = func(std::forward<Args>(args)..., &ret);
+    if (status == napi_ok) {
+      return ret;
+    }
+  }
+  std::fprintf(stderr, "%s: %d\n", name, status);
+  std::abort();
+}
+
+#define NAPI_CALL(ret_type, func, ...)                                         \
+  call<ret_type, func>(#func, ##__VA_ARGS__)
+
+void thread_func(napi_threadsafe_function tsfn) {
+  fprintf(stderr, "thread_func: starting\n");
+  auto status =
+      napi_call_threadsafe_function(tsfn, nullptr, napi_tsfn_blocking);
+  while (status == napi_ok) {
+    std::this_thread::sleep_for(std::chrono::milliseconds(1));
+    status = napi_call_threadsafe_function(tsfn, nullptr, napi_tsfn_blocking);
+  }
+  fprintf(stderr, "thread_func: Got status %d, exiting...\n", status);
+}
+
+void tsfn_callback(napi_env env, napi_value js_cb, void* ctx, void* data) {
+  if (env == nullptr) {
+    fprintf(stderr, "tsfn_callback: env=%p\n", env);
+  }
+}
+
+void tsfn_finalize(napi_env env, void* finalize_data, void* finalize_hint) {
+  fprintf(stderr, "tsfn_finalize: env=%p\n", env);
+}
+
+std::vector<std::jthread> threads;
+
+auto run(napi_env env, napi_callback_info info) -> napi_value {
+  auto global = NAPI_CALL(napi_value, napi_get_global, env);
+  auto undefined = NAPI_CALL(napi_value, napi_get_undefined, env);
+  auto n_threads = 32;
+  auto tsfn = NAPI_CALL(napi_threadsafe_function,
+                        napi_create_threadsafe_function,
+                        env,
+                        nullptr,
+                        global,
+                        undefined,
+                        0,
+                        n_threads,
+                        nullptr,
+                        tsfn_finalize,
+                        nullptr,
+                        tsfn_callback);
+  for (auto i = 0; i < n_threads; ++i) {
+    threads.emplace_back([tsfn] { thread_func(tsfn); });
+  }
+  NAPI_CALL(void, napi_unref_threadsafe_function, env, tsfn);
+  return NAPI_CALL(napi_value, napi_get_undefined, env);
+}
+
+napi_value init(napi_env env, napi_value exports) {
+  return NAPI_CALL(
+      napi_value, napi_create_function, env, nullptr, 0, run, nullptr);
+}
+
+NAPI_MODULE(NODE_GYP_MODULE_NAME, init)

test/node-api/test_threadsafe_function_shutdown/binding.gyp

@@ -0,0 +1,11 @@
+{
+  "targets": [
+    {
+      "target_name": "binding",
+      "sources": ["binding.cc"],
+      "cflags_cc": ["--std=c++20"],
+      'cflags!': [ '-fno-exceptions', '-fno-rtti' ],
+      'cflags_cc!': [ '-fno-exceptions', '-fno-rtti' ],
+    }
+  ]
+}

test/node-api/test_threadsafe_function_shutdown/test.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const common = require('../../common');
+const process = require('process');
+const assert = require('assert');
+const { fork } = require('child_process');
+const binding = require(`./build/${common.buildType}/binding`);
+
+if (process.argv[2] === 'child') {
+  binding();
+  setTimeout(() => {}, 100);
+} else {
+  const child = fork(__filename, ['child']);
+  child.on('close', (code) => {
+    assert.strictEqual(code, 0);
+  });
+}