src: export number_of_native_contexts and number_of_detached_contexts

export number_of_native_contexts and number_of_detached_contexts as
part of v8.getHeapStatistics()

PR-URL: https://github.com/nodejs/node/pull/27933
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/v8.js b/lib/v8.js
index 2bede41291..cbb8229c7d 100644
--- a/lib/v8.js
+++ b/lib/v8.js
@@ -109,7 +109,9 @@ const {
   kSpaceSizeIndex,
   kSpaceUsedSizeIndex,
   kSpaceAvailableSizeIndex,
-  kPhysicalSpaceSizeIndex
+  kPhysicalSpaceSizeIndex,
+  kNumberOfNativeContextsIndex,
+  kNumberOfDetachedContextsIndex
 } = internalBinding('v8');
 
 const kNumberOfHeapSpaces = kHeapSpaces.length;
@@ -139,7 +141,9 @@ function getHeapStatistics() {
     'heap_size_limit': buffer[kHeapSizeLimitIndex],
     'malloced_memory': buffer[kMallocedMemoryIndex],
     'peak_malloced_memory': buffer[kPeakMallocedMemoryIndex],
-    'does_zap_garbage': buffer[kDoesZapGarbageIndex]
+    'does_zap_garbage': buffer[kDoesZapGarbageIndex],
+    'number_of_native_contexts': buffer[kNumberOfNativeContextsIndex],
+    'number_of_detached_contexts': buffer[kNumberOfDetachedContextsIndex]
   };
 }