Speculative fix for timeouts (hangs) in

runtime/vm/pages.cc

 // Copyright (c) 2012, 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/pages.h"
 
 #include "platform/assert.h"
 #include "vm/compiler_stats.h"
 #include "vm/gc_marker.h"
 #include "vm/gc_sweeper.h"
@@ skipping 951 matching lines @@
     UpdateMaxUsed();
     if (heap_ != NULL) {
       heap_->UpdateGlobalMaxUsed();
     }
   }
 
   // Done, reset the task count.
   {
     MonitorLocker ml(tasks_lock());
     set_tasks(tasks() - 1);
-    ml.Notify();
+    ml.NotifyAll();
   }
 }
 
 
 uword PageSpace::TryAllocateDataBumpInternal(intptr_t size,
                                              GrowthPolicy growth_policy,
                                              bool is_locked) {
   ASSERT(size >= kObjectAlignment);
   ASSERT(Utils::IsAligned(size, kObjectAlignment));
   intptr_t remaining = bump_end_ - bump_top_;
@@ skipping 237 matching lines @@
     return 0;
   } else {
     ASSERT(total_time >= gc_time);
     int result = static_cast<int>((static_cast<double>(gc_time) /
                                    static_cast<double>(total_time)) * 100);
     return result;
   }
 }
 
 }  // namespace dart