Clean up queued compilation tasks when quitting.

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 88 matching lines @@
 }
 
 
 void OptimizingCompilerThread::Stop() {
   ASSERT(!IsOptimizerThread());
   Release_Store(&stop_thread_, static_cast<AtomicWord>(true));
   input_queue_semaphore_->Signal();
   stop_semaphore_->Wait();
 
   if (FLAG_parallel_recompilation_delay != 0) {
-    InstallOptimizedFunctions();
     // Barrier when loading queue length is not necessary since the write
     // happens in CompileNext on the same thread.
-    while (NoBarrier_Load(&queue_length_) > 0) {
-      CompileNext();
-      InstallOptimizedFunctions();
+    while (NoBarrier_Load(&queue_length_) > 0) CompileNext();
+    InstallOptimizedFunctions();
+  } else {
+    OptimizingCompiler* optimizing_compiler;
+    while (input_queue_.Dequeue(&optimizing_compiler)) {
+      // The optimizing compiler is allocated in the CompilationInfo's zone.
+      delete optimizing_compiler->info();
     }
   }
 
   if (FLAG_trace_parallel_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);
   }
 }
@@ skipping 24 matching lines @@
 
 #ifdef DEBUG
 bool OptimizingCompilerThread::IsOptimizerThread() {
   if (!FLAG_parallel_recompilation) return false;
   return ThreadId::Current().ToInteger() == thread_id_;
 }
 #endif
 
 
 } }  // namespace v8::internal