From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samuel Attard <samuel.r.attard@gmail.com>
Date: Tue, 3 Nov 2020 16:49:32 -0800
Subject: export gin::V8Platform::PageAllocator for usage outside of the gin
 platform

In order for memory allocation in the main process node environment to be
correctly tagged with MAP_JIT we need to use gins page allocator instead
of the default V8 allocator.  This probably can't be usptreamed.

diff --git a/gin/public/v8_platform.h b/gin/public/v8_platform.h
index e93fd69a9b6ceabd8c321f8b7ea641bb2f65f1c4..761584b86dc9d30c9bca018add9f1f8b1e728ff2 100644
--- a/gin/public/v8_platform.h
+++ b/gin/public/v8_platform.h
@@ -31,6 +31,7 @@ class GIN_EXPORT V8Platform : public v8::Platform {
   // enabling Arm's Branch Target Instructions for executable pages. This is
   // verified in the tests for gin::PageAllocator.
   PageAllocator* GetPageAllocator() override;
+  static PageAllocator* GetCurrentPageAllocator();
   void OnCriticalMemoryPressure() override;
   v8::ZoneBackingAllocator* GetZoneBackingAllocator() override;
 #endif
diff --git a/gin/v8_platform.cc b/gin/v8_platform.cc
index a1f4bb41a6dde8b3495996e486cea60a5ecf2b6c..3a3b76471a7ca9d73928a23d0e330daf9d9d399b 100644
--- a/gin/v8_platform.cc
+++ b/gin/v8_platform.cc
@@ -304,6 +304,10 @@ PageAllocator* V8Platform::GetPageAllocator() {
   return g_page_allocator.Pointer();
 }
 
+PageAllocator* V8Platform::GetCurrentPageAllocator() {
+  return g_page_allocator.Pointer();
+}
+
 void V8Platform::OnCriticalMemoryPressure() {
 // We only have a reservation on 32-bit Windows systems.
 // TODO(bbudge) Make the #if's in BlinkInitializer match.
