Profiler experiments: Honor postponing of interrupts in HandleStackGuardInterrupt

src/execution.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 358 matching lines @@
   thread_local_.real_jslimit_ = jslimit;
 }
 
 
 void StackGuard::DisableInterrupts() {
   ExecutionAccess access(isolate_);
   reset_limits(access);
 }
 
 
+bool StackGuard::ShouldPostponeInterrupts() {
+  ExecutionAccess access(isolate_);
+  return should_postpone_interrupts(access);
+}
+
+
 bool StackGuard::IsInterrupted() {
   ExecutionAccess access(isolate_);
   return (thread_local_.interrupt_flags_ & INTERRUPT) != 0;
 }
 
 
 void StackGuard::Interrupt() {
   ExecutionAccess access(isolate_);
   thread_local_.interrupt_flags_ |= INTERRUPT;
   set_interrupt_limits(access);
@@ skipping 478 matching lines @@
   // a debug command break.
   isolate->debugger()->OnDebugBreak(isolate->factory()->undefined_value(),
                                     debug_command_only);
 }
 
 
 #endif
 
 MaybeObject* Execution::HandleStackGuardInterrupt(Isolate* isolate) {
   StackGuard* stack_guard = isolate->stack_guard();
+  if (stack_guard->ShouldPostponeInterrupts()) {
+    return isolate->heap()->undefined_value();
+  }
 
   if (stack_guard->IsGCRequest()) {
     isolate->heap()->CollectAllGarbage(false, "StackGuard GC request");
     stack_guard->Continue(GC_REQUEST);
   }
 
   isolate->counters()->stack_interrupts()->Increment();
   // If FLAG_count_based_interrupts, every interrupt is a profiler interrupt.
   if (FLAG_count_based_interrupts ||
       stack_guard->IsRuntimeProfilerTick()) {
@@ skipping 13 matching lines @@
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   return isolate->heap()->undefined_value();
 }
 
 
 } }  // namespace v8::internal