blob: e51559dd472b8696fbcd200ae81625d9471e9e57 (
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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
// Copyright (c) 2012 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 CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
#define CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
#pragma once
#if defined(ENABLE_GPU)
#include <vector>
#include "base/basictypes.h"
#include "base/cancelable_callback.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
class GpuCommandBufferStubBase;
class CONTENT_EXPORT GpuMemoryManagerClient {
public:
virtual ~GpuMemoryManagerClient() {}
virtual void AppendAllCommandBufferStubs(
std::vector<GpuCommandBufferStubBase*>& stubs) = 0;
};
class CONTENT_EXPORT GpuMemoryManager :
public base::SupportsWeakPtr<GpuMemoryManager> {
public:
enum { kDefaultMaxSurfacesWithFrontbufferSoftLimit = 8 };
// These are predefined values (in bytes) for
// GpuMemoryAllocation::gpuResourceSizeInBytes.
// Maximum Allocation for all tabs is a soft limit that can be exceeded
// during the time it takes for renderers to respect new allocations,
// including when switching tabs or opening a new window.
// To alleviate some pressure, we decrease our desired limit by "one tabs'
// worth" of memory.
enum {
#if defined(OS_ANDROID)
kMinimumAllocationForTab = 32 * 1024 * 1024,
kMaximumAllocationForTabs = 64 * 1024 * 1024,
#else
kMinimumAllocationForTab = 64 * 1024 * 1024,
kMaximumAllocationForTabs = 512 * 1024 * 1024 - kMinimumAllocationForTab,
#endif
};
GpuMemoryManager(GpuMemoryManagerClient* client,
size_t max_surfaces_with_frontbuffer_soft_limit);
~GpuMemoryManager();
// Schedule a Manage() call. If immediate is true, we PostTask without delay.
// Otherwise PostDelayedTask using a CancelableClosure and allow multiple
// delayed calls to "queue" up. This way, we do not spam clients in certain
// lower priority situations. An immediate schedule manage will cancel any
// queued delayed manage.
void ScheduleManage(bool immediate);
private:
friend class GpuMemoryManagerTest;
void Manage();
class CONTENT_EXPORT StubWithSurfaceComparator {
public:
bool operator()(GpuCommandBufferStubBase* lhs,
GpuCommandBufferStubBase* rhs);
};
GpuMemoryManagerClient* client_;
base::CancelableClosure delayed_manage_callback_;
bool manage_immediate_scheduled_;
size_t max_surfaces_with_frontbuffer_soft_limit_;
DISALLOW_COPY_AND_ASSIGN(GpuMemoryManager);
};
#endif
#endif // CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
|
