Introduce helper functions to test parallel recompilation.

src/runtime.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 7972 matching lines @@
   }
   function->ReplaceCode(function->shared()->code());
   return function->code();
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_ParallelRecompile) {
   HandleScope handle_scope(isolate);
   ASSERT(FLAG_parallel_recompilation);
   Compiler::RecompileParallel(args.at<JSFunction>(0));
-  return *isolate->factory()->undefined_value();
+  return isolate->heap()->undefined_value();
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ForceParallelRecompile) {
+  HandleScope handle_scope(isolate);
+  ASSERT(FLAG_parallel_recompilation && FLAG_manual_parallel_recompilation);
+  if (!isolate->optimizing_compiler_thread()->IsQueueAvailable()) {
+    return isolate->Throw(*isolate->factory()->LookupAsciiSymbol(
+                              "Recompile queue is full."));

[Jakob Kummerow, 2012/11/16 10:34:01]

nit: I'd prefer to break the line after "Throw("

+  }
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0);
+  fun->ReplaceCode(isolate->builtins()->builtin(Builtins::kParallelRecompile));
+  Compiler::RecompileParallel(fun);
+  return isolate->heap()->undefined_value();
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_InstallRecompiledCode) {
+  HandleScope handle_scope(isolate);
+  ASSERT(FLAG_parallel_recompilation && FLAG_manual_parallel_recompilation);
+  CONVERT_ARG_HANDLE_CHECKED(HeapObject, arg, 0);
+  OptimizingCompilerThread* opt_thread = isolate->optimizing_compiler_thread();
+  if (!arg->IsJSFunction()) {
+    opt_thread->InstallOptimizedFunctions();
+  } else if (!JSFunction::cast(*arg)->IsOptimized()) {
+    Handle<SharedFunctionInfo> shared(JSFunction::cast(*arg)->shared());
+    while (*opt_thread->InstallNextOptimizedFunction() != *shared) { }
+  }
+  return isolate->heap()->undefined_value();
+}
+
+
 class ActivationsFinder : public ThreadVisitor {
  public:
   explicit ActivationsFinder(JSFunction* function)
       : function_(function), has_activations_(false) {}
 
   void VisitThread(Isolate* isolate, ThreadLocalTop* top) {
     if (has_activations_) return;
 
     for (JavaScriptFrameIterator it(isolate, top); !it.done(); it.Advance()) {
       JavaScriptFrame* frame = it.frame();
@@ skipping 5414 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal