doc: runtime deprecate flag --trace-atomics-wait

PR-URL: https://github.com/nodejs/node/pull/51179
Refs: https://github.com/nodejs/node/issues/42982
Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/deprecations.md

@@ -3313,6 +3313,9 @@ Values other than `undefined`, `null`, integer numbers, and integer strings
 
 <!-- YAML
 changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/51179
+    description: Runtime deprecation.
   - version:
     - v18.8.0
     - v16.18.0
@@ -3320,9 +3323,11 @@ changes:
     description: Documentation-only deprecation.
 -->
 
-Type: Documentation-only
+Type: Runtime
 
-The [`--trace-atomics-wait`][] flag is deprecated.
+The [`--trace-atomics-wait`][] flag is deprecated because
+it uses the V8 hook `SetAtomicsWaitCallback`,
+that will be removed in a future V8 release.
 
 ### DEP0166: Double slashes in imports and exports targets
 

src/node.cc

@@ -258,6 +258,10 @@ void Environment::InitializeDiagnostics() {
   if (options_->trace_uncaught)
     isolate_->SetCaptureStackTraceForUncaughtExceptions(true);
   if (options_->trace_atomics_wait) {
+    ProcessEmitDeprecationWarning(
+        Environment::GetCurrent(isolate_),
+        "The flag --trace-atomics-wait is deprecated.",
+        "DEP0165");
     isolate_->SetAtomicsWaitCallback(AtomicsWaitCallback, this);
     AddCleanupHook([](void* data) {
       Environment* env = static_cast<Environment*>(data);

test/parallel/test-trace-atomic-deprecation.js

@@ -0,0 +1,14 @@
+'use strict';
+
+const common = require('../common');
+const assert = require('node:assert');
+const { test } = require('node:test');
+
+test('should emit deprecation warning DEP0165', async () => {
+  const { code, stdout, stderr } = await common.spawnPromisified(
+    process.execPath, ['--trace-atomics-wait', '-e', '{}']
+  );
+  assert.match(stderr, /\[DEP0165\] DeprecationWarning:/);
+  assert.strictEqual(stdout, '');
+  assert.strictEqual(code, 0);
+});

test/parallel/test-trace-atomics-wait.js

@@ -25,7 +25,7 @@ if (process.argv[2] === 'child') {
 
 const proc = child_process.spawnSync(
   process.execPath,
-  [ '--trace-atomics-wait', __filename, 'child' ],
+  [ '--disable-warning=DEP0165', '--trace-atomics-wait', __filename, 'child' ],
   { encoding: 'utf8', stdio: [ 'inherit', 'inherit', 'pipe' ] });
 
 if (proc.status !== 0) console.log(proc);