Rename "parallel recompilation" to "concurrent recompilation".

src/optimizing-compiler-thread.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 31 matching lines @@
   { ScopedLock lock(thread_id_mutex_);
     thread_id_ = ThreadId::Current().ToInteger();
   }
 #endif
   Isolate::SetIsolateThreadLocals(isolate_, NULL);
   DisallowHeapAllocation no_allocation;
   DisallowHandleAllocation no_handles;
   DisallowHandleDereference no_deref;
 
   int64_t epoch = 0;
-  if (FLAG_trace_parallel_recompilation) epoch = OS::Ticks();
+  if (FLAG_trace_concurrent_recompilation) epoch = OS::Ticks();
 
   while (true) {
     input_queue_semaphore_->Wait();
     Logger::TimerEventScope timer(
-        isolate_, Logger::TimerEventScope::v8_recompile_parallel);
+        isolate_, Logger::TimerEventScope::v8_recompile_concurrent);
 
-    if (FLAG_parallel_recompilation_delay != 0) {
-      OS::Sleep(FLAG_parallel_recompilation_delay);
+    if (FLAG_concurrent_recompilation_delay != 0) {
+      OS::Sleep(FLAG_concurrent_recompilation_delay);
     }
 
     switch (static_cast<StopFlag>(Acquire_Load(&stop_thread_))) {
       case CONTINUE:
         break;
       case STOP:
-        if (FLAG_trace_parallel_recompilation) {
+        if (FLAG_trace_concurrent_recompilation) {
           time_spent_total_ = OS::Ticks() - epoch;
         }
         stop_semaphore_->Signal();
         return;
       case FLUSH:
         // The main thread is blocked, waiting for the stop semaphore.
         { AllowHandleDereference allow_handle_dereference;
           FlushInputQueue(true);
         }
         Release_Store(&queue_length_, static_cast<AtomicWord>(0));
         Release_Store(&stop_thread_, static_cast<AtomicWord>(CONTINUE));
         stop_semaphore_->Signal();
         // Return to start of consumer loop.
         continue;
     }
 
     int64_t compiling_start = 0;
-    if (FLAG_trace_parallel_recompilation) compiling_start = OS::Ticks();
+    if (FLAG_trace_concurrent_recompilation) compiling_start = OS::Ticks();
 
     CompileNext();
 
-    if (FLAG_trace_parallel_recompilation) {
+    if (FLAG_trace_concurrent_recompilation) {
       time_spent_compiling_ += OS::Ticks() - compiling_start;
     }
   }
 }
 
 
 void OptimizingCompilerThread::CompileNext() {
   OptimizingCompiler* optimizing_compiler = NULL;
   bool result = input_queue_.Dequeue(&optimizing_compiler);
   USE(result);
@@ skipping 56 matching lines @@
   FlushOutputQueue(true);
 }
 
 
 void OptimizingCompilerThread::Stop() {
   ASSERT(!IsOptimizerThread());
   Release_Store(&stop_thread_, static_cast<AtomicWord>(STOP));
   input_queue_semaphore_->Signal();
   stop_semaphore_->Wait();
 
-  if (FLAG_parallel_recompilation_delay != 0) {
+  if (FLAG_concurrent_recompilation_delay != 0) {
     // Barrier when loading queue length is not necessary since the write
     // happens in CompileNext on the same thread.
     // This is used only for testing.
     while (NoBarrier_Load(&queue_length_) > 0) CompileNext();
     InstallOptimizedFunctions();
   } else {
     FlushInputQueue(false);
     FlushOutputQueue(false);
   }
 
-  if (FLAG_trace_parallel_recompilation) {
+  if (FLAG_trace_concurrent_recompilation) {
     double compile_time = static_cast<double>(time_spent_compiling_);
     double total_time = static_cast<double>(time_spent_total_);
     double percentage = (compile_time * 100) / total_time;
     PrintF("  ** Compiler thread did %.2f%% useful work\n", percentage);
   }
 
   Join();
 }
 
 
@@ skipping 17 matching lines @@
   ASSERT(!IsOptimizerThread());
   Barrier_AtomicIncrement(&queue_length_, static_cast<Atomic32>(1));
   optimizing_compiler->info()->closure()->MarkInRecompileQueue();
   input_queue_.Enqueue(optimizing_compiler);
   input_queue_semaphore_->Signal();
 }
 
 
 #ifdef DEBUG
 bool OptimizingCompilerThread::IsOptimizerThread() {
-  if (!FLAG_parallel_recompilation) return false;
+  if (!FLAG_concurrent_recompilation) return false;
   ScopedLock lock(thread_id_mutex_);
   return ThreadId::Current().ToInteger() == thread_id_;
 }
 #endif
 
 
 } }  // namespace v8::internal