cc/output/managed_memory_policy.cc

   1 // Copyright 2013 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/output/managed_memory_policy.h"
   6
   7 #include "base/logging.h"
   8 #include "cc/resources/priority_calculator.h"
   9
  10 namespace cc {
  11
  12 const size_t ManagedMemoryPolicy::kDefaultNumResourcesLimit = 10 * 1000 * 1000;
  13
  14 ManagedMemoryPolicy::ManagedMemoryPolicy(size_t bytes_limit_when_visible)
  15     : bytes_limit_when_visible(bytes_limit_when_visible),
  16       priority_cutoff_when_visible(CUTOFF_ALLOW_EVERYTHING),
  17       bytes_limit_when_not_visible(0),
  18       priority_cutoff_when_not_visible(CUTOFF_ALLOW_NOTHING),
  19       num_resources_limit(kDefaultNumResourcesLimit) {}
  20
  21 ManagedMemoryPolicy::ManagedMemoryPolicy(
  22     size_t bytes_limit_when_visible,
  23     PriorityCutoff priority_cutoff_when_visible,
  24     size_t bytes_limit_when_not_visible,
  25     PriorityCutoff priority_cutoff_when_not_visible,
  26     size_t num_resources_limit)
  27     : bytes_limit_when_visible(bytes_limit_when_visible),
  28       priority_cutoff_when_visible(priority_cutoff_when_visible),
  29       bytes_limit_when_not_visible(bytes_limit_when_not_visible),
  30       priority_cutoff_when_not_visible(priority_cutoff_when_not_visible),
  31       num_resources_limit(num_resources_limit) {}
  32
  33 bool ManagedMemoryPolicy::operator==(const ManagedMemoryPolicy& other) const {
  34   return bytes_limit_when_visible == other.bytes_limit_when_visible &&
  35          priority_cutoff_when_visible == other.priority_cutoff_when_visible &&
  36          bytes_limit_when_not_visible == other.bytes_limit_when_not_visible &&
  37          priority_cutoff_when_not_visible ==
  38              other.priority_cutoff_when_not_visible &&
  39          num_resources_limit == other.num_resources_limit;
  40 }
  41
  42 bool ManagedMemoryPolicy::operator!=(const ManagedMemoryPolicy& other) const {
  43   return !(*this == other);
  44 }
  45
  46 // static
  47 int ManagedMemoryPolicy::PriorityCutoffToValue(PriorityCutoff priority_cutoff) {
  48   switch (priority_cutoff) {
  49     case CUTOFF_ALLOW_NOTHING:
  50       return PriorityCalculator::AllowNothingCutoff();
  51     case CUTOFF_ALLOW_REQUIRED_ONLY:
  52       return PriorityCalculator::AllowVisibleOnlyCutoff();
  53     case CUTOFF_ALLOW_NICE_TO_HAVE:
  54       return PriorityCalculator::AllowVisibleAndNearbyCutoff();
  55     case CUTOFF_ALLOW_EVERYTHING:
  56       return PriorityCalculator::AllowEverythingCutoff();
  57   }
  58   NOTREACHED();
  59   return PriorityCalculator::AllowNothingCutoff();
  60 }
  61
  62 // static
  63 TileMemoryLimitPolicy
  64 ManagedMemoryPolicy::PriorityCutoffToTileMemoryLimitPolicy(
  65     PriorityCutoff priority_cutoff) {
  66   switch (priority_cutoff) {
  67     case CUTOFF_ALLOW_NOTHING:
  68       return ALLOW_NOTHING;
  69     case CUTOFF_ALLOW_REQUIRED_ONLY:
  70       return ALLOW_ABSOLUTE_MINIMUM;
  71     case CUTOFF_ALLOW_NICE_TO_HAVE:
  72       return ALLOW_PREPAINT_ONLY;
  73     case CUTOFF_ALLOW_EVERYTHING:
  74       return ALLOW_ANYTHING;
  75   }
  76   NOTREACHED();
  77   return ALLOW_NOTHING;
  78 }
  79
  80 }  // namespace cc