Fixing tree (using smaller prime than 2^31)

base/tracked_objects.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/tracked_objects.h"
 
 #include <math.h>
 
 #include "base/format_macros.h"
 #include "base/message_loop.h"
@@ skipping 324 matching lines @@
   // snapshot it (but they lock before copying it).
   base::AutoLock lock(map_lock_);
   birth_map_[location] = tracker;
   return tracker;
 }
 
 void ThreadData::TallyADeath(const Births& birth,
                              DurationInt queue_duration,
                              DurationInt run_duration) {
   // Stir in some randomness, plus add constant in case durations are zero.
-  const DurationInt kSomePrimeNumber = 4294967279;
+  const DurationInt kSomePrimeNumber = 5939;  // To big is 4294967279;
   random_number_ += queue_duration + run_duration + kSomePrimeNumber;
   // An address is going to have some randomness to it as well ;-).
   random_number_ ^= static_cast<int32>(&birth - reinterpret_cast<Births*>(0));
 
   DeathMap::iterator it = death_map_.find(&birth);
   DeathData* death_data;
   if (it != death_map_.end()) {
     death_data = &it->second;
   } else {
     base::AutoLock lock(map_lock_);  // Lock as the map may get relocated now.
@@ skipping 383 matching lines @@
 
 base::ListValue* DataCollector::ToValue() const {
   base::ListValue* list = new base::ListValue;
   for (size_t i = 0; i < collection_.size(); ++i) {
     list->Append(collection_[i].ToValue());
   }
   return list;
 }
 
 }  // namespace tracked_objects