cc/memory_history.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/memory_history.h"
   6
   7 namespace cc {
   8
   9 // static
  10 scoped_ptr<MemoryHistory> MemoryHistory::create() {
  11   return make_scoped_ptr(new MemoryHistory());
  12 }
  13
  14 MemoryHistory::MemoryHistory() {
  15 }
  16
  17 void MemoryHistory::SaveEntry(const MemoryHistory::Entry& entry) {
  18   ring_buffer_.SaveToBuffer(entry);
  19 }
  20
  21 void MemoryHistory::GetMinAndMax(size_t* min, size_t* max) const {
  22   *min = std::numeric_limits<size_t>::max();
  23   *max = 0;
  24
  25   for (RingBufferType::Iterator it = ring_buffer_.Begin(); it; ++it) {
  26     size_t bytes_total = it->bytes_total();
  27
  28     if (bytes_total < *min)
  29       *min = bytes_total;
  30     if (bytes_total > *max)
  31         *max = bytes_total;
  32   }
  33
  34   if (*min > *max)
  35     *min = *max;
  36 }
  37
  38 }  // namespace cc