v8: integrate node-heapdump into core

Adds `v8.writeHeapSnapshot(filename)` with impl adapted
from the `node-heapdump` module.

Also, adds a v8.getHeapSnapshot() alternative that returns
a Readable Stream

PR-URL: https://github.com/nodejs/node/pull/26501
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/test/sequential/test-async-wrap-getasyncid.js b/test/sequential/test-async-wrap-getasyncid.js
index 65f6f8e703..0818dec2db 100644
--- a/test/sequential/test-async-wrap-getasyncid.js
+++ b/test/sequential/test-async-wrap-getasyncid.js
@@ -5,6 +5,7 @@ const common = require('../common');
 const { internalBinding } = require('internal/test/binding');
 const assert = require('assert');
 const fs = require('fs');
+const v8 = require('v8');
 const fsPromises = fs.promises;
 const net = require('net');
 const providers = Object.assign({}, internalBinding('async_wrap').Providers);
@@ -294,3 +295,8 @@ if (process.features.inspector && common.isMainThread) {
   testInitialized(handle, 'Connection');
   handle.disconnect();
 }
+
+// PROVIDER_HEAPDUMP
+{
+  v8.getHeapSnapshot().destroy();
+}