base/memory/discardable_memory_win.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 "base/memory/discardable_memory.h"
   6
   7 #include "base/logging.h"
   8 #include "base/memory/discardable_memory_emulated.h"
   9
  10 namespace base {
  11
  12 // static
  13 bool DiscardableMemory::ReduceMemoryUsage() {
  14   return internal::DiscardableMemoryEmulated::ReduceMemoryUsage();
  15 }
  16
  17 // static
  18 void DiscardableMemory::GetSupportedTypes(
  19     std::vector<DiscardableMemoryType>* types) {
  20   const DiscardableMemoryType supported_types[] = {
  21     DISCARDABLE_MEMORY_TYPE_EMULATED
  22   };
  23   types->assign(supported_types, supported_types + arraysize(supported_types));
  24 }
  25
  26 // static
  27 scoped_ptr<DiscardableMemory> DiscardableMemory::CreateLockedMemoryWithType(
  28     DiscardableMemoryType type, size_t size) {
  29   switch (type) {
  30     case DISCARDABLE_MEMORY_TYPE_EMULATED: {
  31       scoped_ptr<internal::DiscardableMemoryEmulated> memory(
  32           new internal::DiscardableMemoryEmulated(size));
  33       if (!memory->Initialize())
  34         return nullptr;
  35
  36       return memory.Pass();
  37     }
  38     case DISCARDABLE_MEMORY_TYPE_NONE:
  39     case DISCARDABLE_MEMORY_TYPE_ASHMEM:
  40     case DISCARDABLE_MEMORY_TYPE_MACH:
  41       NOTREACHED();
  42       return nullptr;
  43   }
  44
  45   NOTREACHED();
  46   return nullptr;
  47 }
  48
  49 // static
  50 void DiscardableMemory::PurgeForTesting() {
  51   internal::DiscardableMemoryEmulated::PurgeForTesting();
  52 }
  53
  54 }  // namespace base