Add memory pressure interrupt for memory pressure notification

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 26ebfa8a6775163c01e75c00d54e728fc950ecdf..4da05947b241b83a34db8a09bc2729f390027d3e 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -7153,6 +7153,10 @@ void Isolate::RequestInterrupt(InterruptCallback callback, void* data) {
   isolate->RequestInterrupt(callback, data);
 }
 
+void Isolate::RequestMemoryPressureInterrupt() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->RequestMemoryPressureInterrupt();
+}
 
 void Isolate::RequestGarbageCollectionForTesting(GarbageCollectionType type) {
   CHECK(i::FLAG_expose_gc);
@@ -7577,6 +7581,18 @@ void Isolate::LowMemoryNotification() {
   }
 }
 
+void Isolate::GCNotificationBasedOnMemoryPressureInterrupt() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  {
+    i::HistogramTimerScope idle_notification_scope(
+        isolate->counters()->gc_low_memory_notification());
+    if (isolate->stack_guard()->NeedMemoryPressureGC()) {
+      TRACE_EVENT0("v8", "V8.GCLowMemoryNotification");
+      isolate->heap()->CollectAllAvailableGarbage("low memory notification");
+      isolate->stack_guard()->MemoryPressureGCDone();
+    }
+  }
+}
 
 int Isolate::ContextDisposedNotification(bool dependant_context) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);