Optimize functions on a second thread.

src/objects.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 7231 matching lines @@
 
 
 void JSFunction::MarkForLazyRecompilation() {
   ASSERT(is_compiled() && !IsOptimized());
   ASSERT(shared()->allows_lazy_compilation() ||
          code()->optimizable());
   Builtins* builtins = GetIsolate()->builtins();
   ReplaceCode(builtins->builtin(Builtins::kLazyRecompile));
 }
 
+void JSFunction::MarkForParallelRecompilation() {
+  ASSERT(is_compiled() && !IsOptimized());
+  ASSERT(shared()->allows_lazy_compilation() || code()->optimizable());
+  Builtins* builtins = GetIsolate()->builtins();
+  ReplaceCode(builtins->builtin(Builtins::kParallelRecompile));
+
+  // Unlike MarkForLazyRecompilation, after queuing a function for
+  // recompilation on the compiler thread, we actually tail-call into
+  // the full code.  We reset the profiler ticks here so that the
+  // function doesn't bother the runtime profiler too much.
+  shared()->code()->set_profiler_ticks(0);
+}
 
 static bool CompileLazyHelper(CompilationInfo* info,
                               ClearExceptionFlag flag) {
   // Compile the source information to a code object.
   ASSERT(info->IsOptimizing() || !info->shared_info()->is_compiled());
   ASSERT(!info->isolate()->has_pending_exception());
   bool result = Compiler::CompileLazy(info);
   ASSERT(result != Isolate::Current()->has_pending_exception());
   if (!result && flag == CLEAR_EXCEPTION) {
     info->isolate()->clear_pending_exception();
@@ skipping 5773 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal