cc/output/managed_memory_policy.h

   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 #ifndef CC_OUTPUT_MANAGED_MEMORY_POLICY_H_
   6 #define CC_OUTPUT_MANAGED_MEMORY_POLICY_H_
   7
   8 #include "base/basictypes.h"
   9 #include "cc/base/cc_export.h"
  10 #include "cc/resources/tile_priority.h"
  11
  12 namespace cc {
  13
  14 struct CC_EXPORT ManagedMemoryPolicy {
  15   enum PriorityCutoff {
  16     CUTOFF_ALLOW_NOTHING,
  17     CUTOFF_ALLOW_REQUIRED_ONLY,
  18     CUTOFF_ALLOW_NICE_TO_HAVE,
  19     CUTOFF_ALLOW_EVERYTHING,
  20   };
  21   static const size_t kDefaultNumResourcesLimit;
  22
  23   explicit ManagedMemoryPolicy(size_t bytes_limit_when_visible);
  24   ManagedMemoryPolicy(size_t bytes_limit_when_visible,
  25                       PriorityCutoff priority_cutoff_when_visible,
  26                       size_t bytes_limit_when_not_visible,
  27                       PriorityCutoff priority_cutoff_when_not_visible,
  28                       size_t num_resources_limit);
  29   bool operator==(const ManagedMemoryPolicy&) const;
  30   bool operator!=(const ManagedMemoryPolicy&) const;
  31
  32   size_t bytes_limit_when_visible;
  33   PriorityCutoff priority_cutoff_when_visible;
  34   size_t bytes_limit_when_not_visible;
  35   PriorityCutoff priority_cutoff_when_not_visible;
  36   size_t num_resources_limit;
  37
  38   static int PriorityCutoffToValue(PriorityCutoff priority_cutoff);
  39   static TileMemoryLimitPolicy PriorityCutoffToTileMemoryLimitPolicy(
  40       PriorityCutoff priority_cutoff);
  41 };
  42
  43 }  // namespace cc
  44
  45 #endif  // CC_OUTPUT_MANAGED_MEMORY_POLICY_H_