cc/managed_memory_policy.h

   1 // Copyright 2011 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_MANAGED_MEMORY_POLICY_H_
   6 #define CC_MANAGED_MEMORY_POLICY_H_
   7
   8 #include "base/basictypes.h"
   9 #include "cc/cc_export.h"
  10 #include "cc/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
  22     ManagedMemoryPolicy(size_t bytesLimitWhenVisible);
  23     ManagedMemoryPolicy(size_t bytesLimitWhenVisible,
  24                         PriorityCutoff priorityCutoffWhenVisible,
  25                         size_t bytesLimitWhenNotVisible,
  26                         PriorityCutoff priorityCutoffWhenNotVisible);
  27     bool operator==(const ManagedMemoryPolicy&) const;
  28     bool operator!=(const ManagedMemoryPolicy&) const;
  29
  30     size_t bytesLimitWhenVisible;
  31     PriorityCutoff priorityCutoffWhenVisible;
  32     size_t bytesLimitWhenNotVisible;
  33     PriorityCutoff priorityCutoffWhenNotVisible;
  34
  35     static int priorityCutoffToValue(PriorityCutoff priorityCutoff);
  36     static TileMemoryLimitPolicy priorityCutoffToTileMemoryLimitPolicy(PriorityCutoff priorityCutoff);
  37 };
  38
  39 }  // namespace cc
  40
  41 #endif  // CC_MANAGED_MEMORY_POLICY_H_