Add a basic compiler dispatcher

src/compiler-dispatcher/compiler-dispatcher-job.h

Index: src/compiler-dispatcher/compiler-dispatcher-job.h
diff --git a/src/compiler-dispatcher/compiler-dispatcher-job.h b/src/compiler-dispatcher/compiler-dispatcher-job.h
index 7f4c6ced715536ed58078b40e62a95b502a272a3..ea1a6fc853c83de20d3f7a26893fc0f9e9ef1fd0 100644
--- a/src/compiler-dispatcher/compiler-dispatcher-job.h
+++ b/src/compiler-dispatcher/compiler-dispatcher-job.h
@@ -40,7 +40,8 @@ enum class CompileJobStatus {
 
 class V8_EXPORT_PRIVATE CompilerDispatcherJob {
  public:
-  CompilerDispatcherJob(Isolate* isolate, Handle<SharedFunctionInfo> shared,
+  CompilerDispatcherJob(Isolate* isolate, CompilerDispatcherTracer* tracer,
+                        Handle<SharedFunctionInfo> shared,
                         size_t max_stack_size);
   ~CompilerDispatcherJob();
 
@@ -54,6 +55,10 @@ class V8_EXPORT_PRIVATE CompilerDispatcherJob {
     return can_compile_on_background_thread_;
   }
 
+  // Returns true if this CompilerDispatcherJob was created for the given
+  // function.
+  bool IsProcessing(Handle<SharedFunctionInfo> shared) const;

[marja, 2016/12/12 09:00:02]

Naming nit: IsProcessing has a connotation that something is "in progress", and
it's not clear that IsProcessing is true after the compilation job has finished
too.

IsAssociatedWith?

[rmcilroy, 2016/12/12 09:50:39]

Or how about just a getter which returns the SFI and do the equality check in
the caller?

[jochen (gone - plz use gerrit), 2016/12/12 10:51:17]

that would require creating a new handle, as the member of the job is a global
handle, so we can't just return it

[jochen (gone - plz use gerrit), 2016/12/12 10:51:17]

done

+
   // Transition from kInitial to kReadyToParse.
   void PrepareToParseOnMainThread();