blob: 8d74b16959fd795bedaf11440171d868d09ba76c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// 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.
#ifndef BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_
#define BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_
#include <stddef.h>
#include <memory>
#include "base/base_export.h"
namespace base {
class DiscardableMemory;
class BASE_EXPORT DiscardableMemoryAllocator {
public:
// Returns the allocator instance.
static DiscardableMemoryAllocator* GetInstance();
// Sets the allocator instance. Can only be called once, e.g. on startup.
// Ownership of |instance| remains with the caller.
static void SetInstance(DiscardableMemoryAllocator* allocator);
// Giant WARNING: Discardable[Shared]Memory is only implemented on Android. On
// non-Android platforms, it behaves exactly the same as SharedMemory.
// See LockPages() in discardable_shared_memory.cc.
virtual std::unique_ptr<DiscardableMemory> AllocateLockedDiscardableMemory(
size_t size) = 0;
protected:
virtual ~DiscardableMemoryAllocator() = default;
};
} // namespace base
#endif // BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_
|
