| // Copyright 2015 The Chromium Authors. All rights reserved. | 
 | // Use of this source code is governed by a BSD-style license that can be | 
 | // found in the LICENSE file. | 
 |  | 
 | #include "base/memory/discardable_memory_allocator.h" | 
 |  | 
 | #include "base/logging.h" | 
 |  | 
 | namespace base { | 
 | namespace { | 
 |  | 
 | DiscardableMemoryAllocator* g_discardable_allocator = nullptr; | 
 |  | 
 | }  // namespace | 
 |  | 
 | // static | 
 | void DiscardableMemoryAllocator::SetInstance( | 
 |     DiscardableMemoryAllocator* allocator) { | 
 |   DCHECK(!allocator || !g_discardable_allocator); | 
 |   g_discardable_allocator = allocator; | 
 | } | 
 |  | 
 | // static | 
 | DiscardableMemoryAllocator* DiscardableMemoryAllocator::GetInstance() { | 
 |   DCHECK(g_discardable_allocator); | 
 |   return g_discardable_allocator; | 
 | } | 
 |  | 
 | }  // namespace base |