VM thread shutdown.

runtime/vm/thread_interrupter.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/thread_interrupter.h"
 
 #include "vm/flags.h"
 #include "vm/lockers.h"
 #include "vm/os.h"
 #include "vm/simulator.h"
@@ skipping 83 matching lines @@
       return;
     }
     shutdown_ = true;
     // Notify.
     monitor_->Notify();
     ASSERT(initialized_);
     if (FLAG_trace_thread_interrupter) {
       OS::Print("ThreadInterrupter shutting down.\n");
     }
   }
-#if defined(TARGET_OS_WINDOWS)
-  // On Windows, a thread's exit-code can leak into the process's exit-code,
-  // if exiting 'at same time' as the process ends. By joining with the thread
-  // here, we avoid this race condition.
+
+  // Join the thread.
   ASSERT(interrupter_thread_id_ != OSThread::kInvalidThreadId);
   OSThread::Join(interrupter_thread_id_);
   interrupter_thread_id_ = OSThread::kInvalidThreadId;
-#else
-  // On non-Windows platforms, just wait for the thread interrupter to signal
-  // that it has exited the loop.
-  {
-    MonitorLocker shutdown_ml(monitor_);
-    while (thread_running_) {
-      // Wait for thread to exit.
-      shutdown_ml.Wait();
-    }
-  }
-#endif
+
   if (FLAG_trace_thread_interrupter) {
     OS::Print("ThreadInterrupter shut down.\n");
   }
 }
 
 // Delay between interrupts.
 void ThreadInterrupter::SetInterruptPeriod(intptr_t period) {
   if (shutdown_) {
     return;
   }
@@ skipping 181 matching lines @@
   }
   {
     // Signal to main thread we are exiting.
     MonitorLocker shutdown_ml(monitor_);
     thread_running_ = false;
     shutdown_ml.Notify();
   }
 }
 
 }  // namespace dart