Add memory pressure interrupt for memory pressure notification

src/execution.h

Index: src/execution.h
diff --git a/src/execution.h b/src/execution.h
index 52c76280eba8b495e271318b5ff383f022b7d776..4f4508536c19ca248df6aa874a33b4314afe32ef 100644
--- a/src/execution.h
+++ b/src/execution.h
@@ -86,14 +86,15 @@ class StackGuard final {
   // it has been set up.
   void ClearThread(const ExecutionAccess& lock);
 
-#define INTERRUPT_LIST(V)                                          \
-  V(DEBUGBREAK, DebugBreak, 0)                                     \
-  V(DEBUGCOMMAND, DebugCommand, 1)                                 \
-  V(TERMINATE_EXECUTION, TerminateExecution, 2)                    \
-  V(GC_REQUEST, GC, 3)                                             \
-  V(INSTALL_CODE, InstallCode, 4)                                  \
-  V(API_INTERRUPT, ApiInterrupt, 5)                                \
-  V(DEOPT_MARKED_ALLOCATION_SITES, DeoptMarkedAllocationSites, 6)
+#define INTERRUPT_LIST(V)                                         \
+  V(DEBUGBREAK, DebugBreak, 0)                                    \
+  V(DEBUGCOMMAND, DebugCommand, 1)                                \
+  V(TERMINATE_EXECUTION, TerminateExecution, 2)                   \
+  V(GC_REQUEST, GC, 3)                                            \
+  V(INSTALL_CODE, InstallCode, 4)                                 \
+  V(API_INTERRUPT, ApiInterrupt, 5)                               \
+  V(DEOPT_MARKED_ALLOCATION_SITES, DeoptMarkedAllocationSites, 6) \
+  V(MEMORY_PRESSURE_INTERRUPT, MemoryPressureInterrupt, 7)
 
 #define V(NAME, Name, id)                                          \
   inline bool Check##Name() { return CheckInterrupt(NAME); }  \
@@ -135,6 +136,9 @@ class StackGuard final {
   Object* HandleInterrupts();
   void HandleGCInterrupt();
 
+  bool NeedMemoryPressureGC();
+  void MemoryPressureGCDone();
+
  private:
   StackGuard();