Introduce helper functions to test parallel recompilation.

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 919 matching lines @@
     stack_guard->Continue(GC_REQUEST);
   }
 
   if (stack_guard->IsCodeReadyEvent()) {
     ASSERT(FLAG_parallel_recompilation);
     if (FLAG_trace_parallel_recompilation) {
       PrintF("  ** CODE_READY event received.\n");
     }
     stack_guard->Continue(CODE_READY);
   }
-  if (!stack_guard->IsTerminateExecution()) {
+  if (!stack_guard->IsTerminateExecution() &&
+      !FLAG_manual_parallel_recompilation) {
     isolate->optimizing_compiler_thread()->InstallOptimizedFunctions();
   }
 
   isolate->counters()->stack_interrupts()->Increment();
   // If FLAG_count_based_interrupts, every interrupt is a profiler interrupt.
   if (FLAG_count_based_interrupts ||
       stack_guard->IsRuntimeProfilerTick()) {
     isolate->counters()->runtime_profiler_ticks()->Increment();
     stack_guard->Continue(RUNTIME_PROFILER_TICK);
     isolate->runtime_profiler()->OptimizeNow();
@@ skipping 10 matching lines @@
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   return isolate->heap()->undefined_value();
 }
 
 
 } }  // namespace v8::internal