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allocator_mtl.h
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1 // Copyright 2013 The Flutter 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 FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_ALLOCATOR_MTL_H_
6 #define FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_ALLOCATOR_MTL_H_
7
8 #include <Metal/Metal.h>
9 #include <atomic>
10
11 #include "impeller/base/thread.h"
12 #include "impeller/core/allocator.h"
13
14 namespace impeller {
15
16 class DebugAllocatorStats {
17 public:
18 DebugAllocatorStats() {}
19
20 ~DebugAllocatorStats() {}
21
22 /// Increment the tracked allocation size in bytes.
23 void Increment(size_t size);
24
25 /// Decrement the tracked allocation size in bytes.
26 void Decrement(size_t size);
27
28 /// Get the current tracked allocation size in MB.
29 size_t GetAllocationSizeMB();
30
31 private:
32 std::atomic<size_t> size_ = 0;
33 };
34
35 class AllocatorMTL final : public Allocator {
36 public:
37 AllocatorMTL();
38
39 // |Allocator|
40 ~AllocatorMTL() override;
41
42 // |Allocator|
43 size_t DebugGetHeapUsage() const override;
44
45 private:
46 friend class ContextMTL;
47
48 id<MTLDevice> device_;
49 std::string allocator_label_;
50 bool supports_memoryless_targets_ = false;
51 bool supports_uma_ = false;
52 bool is_valid_ = false;
53
54 #ifdef IMPELLER_DEBUG
55 std::shared_ptr<DebugAllocatorStats> debug_allocater_ =
56 std::make_shared<DebugAllocatorStats>();
57 #endif // IMPELLER_DEBUG
58
59 ISize max_texture_supported_;
60
61 AllocatorMTL(id<MTLDevice> device, std::string label);
62
63 // |Allocator|
64 bool IsValid() const;
65
66 // |Allocator|
67 std::shared_ptr<DeviceBuffer> OnCreateBuffer(
68 const DeviceBufferDescriptor& desc) override;
69
70 // |Allocator|
71 std::shared_ptr<Texture> OnCreateTexture(
72 const TextureDescriptor& desc) override;
73
74 // |Allocator|
75 uint16_t MinimumBytesPerRow(PixelFormat format) const override;
76
77 // |Allocator|
78 ISize GetMaxTextureSizeSupported() const override;
79
80 // |Allocator|
81 void DebugTraceMemoryStatistics() const override;
82
83 AllocatorMTL(const AllocatorMTL&) = delete;
84
85 AllocatorMTL& operator=(const AllocatorMTL&) = delete;
86 };
87
88 } // namespace impeller
89
90 #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_ALLOCATOR_MTL_H_
impeller::AllocatorMTL
Definition: allocator_mtl.h:35
impeller::DeviceBufferDescriptor
Definition: device_buffer_descriptor.h:14
impeller::AllocatorMTL::DebugGetHeapUsage
size_t DebugGetHeapUsage() const override
Definition: allocator_mtl.mm:259
impeller::DebugAllocatorStats::GetAllocationSizeMB
size_t GetAllocationSizeMB()
Get the current tracked allocation size in MB.
Definition: allocator_mtl.mm:101
impeller::AllocatorMTL::AllocatorMTL
AllocatorMTL()
impeller::PixelFormat
PixelFormat
The Pixel formats supported by Impeller. The naming convention denotes the usage of the component,...
Definition: formats.h:99
impeller::DebugAllocatorStats::Decrement
void Decrement(size_t size)
Decrement the tracked allocation size in bytes.
Definition: allocator_mtl.mm:97
impeller::DebugAllocatorStats
Definition: allocator_mtl.h:16
impeller::TSize
Definition: size.h:19
impeller::DebugAllocatorStats::~DebugAllocatorStats
~DebugAllocatorStats()
Definition: allocator_mtl.h:20
impeller::DebugAllocatorStats::DebugAllocatorStats
DebugAllocatorStats()
Definition: allocator_mtl.h:18
impeller::Allocator
An object that allocates device memory.
Definition: allocator.h:22
impeller::AllocatorMTL::~AllocatorMTL
~AllocatorMTL() override
allocator.h
impeller::DebugAllocatorStats::Increment
void Increment(size_t size)
Increment the tracked allocation size in bytes.
Definition: allocator_mtl.mm:93
impeller::TextureDescriptor
A lightweight object that describes the attributes of a texture that can then used an allocator to cr...
Definition: texture_descriptor.h:38
impeller::ContextMTL
Definition: context_mtl.h:34
thread.h
impeller
Definition: aiks_blend_unittests.cc:18