Support multiple interrupt requests in v8 API.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index a998d4dc7197834c558fbc9f74d36829a2a5c376..894950c5bab1458acc1fb873c8d2537f2cc799be 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -5,6 +5,7 @@
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
+#include <queue>
 #include "include/v8-debug.h"
 #include "src/allocation.h"
 #include "src/assert-scope.h"
@@ -390,8 +391,6 @@ typedef List<HeapObject*> DebugObjectCache;
   V(bool, fp_stubs_generated, false)                                           \
   V(int, max_available_threads, 0)                                             \
   V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                            \
-  V(InterruptCallback, api_interrupt_callback, NULL)                           \
-  V(void*, api_interrupt_callback_data, NULL)                                  \
   V(PromiseRejectCallback, promise_reject_callback, NULL)                      \
   ISOLATE_INIT_SIMULATOR_LIST(V)
 
@@ -814,7 +813,8 @@ class Isolate {
   Object* TerminateExecution();
   void CancelTerminateExecution();
 
-  void InvokeApiInterruptCallback();
+  void RequestInterrupt(InterruptCallback callback, void* data);
+  void InvokeApiInterruptCallbacks();
 
   // Administration
   void Iterate(ObjectVisitor* v);
@@ -1292,6 +1292,9 @@ class Isolate {
   HeapProfiler* heap_profiler_;
   FunctionEntryHook function_entry_hook_;
 
+  typedef std::pair<InterruptCallback, void*> InterruptEntry;
+  std::queue<InterruptEntry> api_interrupts_queue_;
+
 #define GLOBAL_BACKING_STORE(type, name, initialvalue)                         \
   type name##_;
   ISOLATE_INIT_LIST(GLOBAL_BACKING_STORE)