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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/surfaces/surface_id_allocator.h" | 5 #include "cc/surfaces/surface_id_allocator.h" |
6 | 6 |
7 #include <stdint.h> | 7 #include <stdint.h> |
8 | 8 |
9 #include "cc/surfaces/surface_manager.h" | 9 #include "cc/surfaces/surface_manager.h" |
10 | 10 |
11 namespace cc { | 11 namespace cc { |
12 | 12 |
13 SurfaceIdAllocator::SurfaceIdAllocator(uint32_t id_namespace) | 13 SurfaceIdAllocator::SurfaceIdAllocator(uint32_t id_namespace) |
14 : id_namespace_(id_namespace), next_id_(1u), manager_(nullptr) { | 14 : id_namespace_(id_namespace), next_id_(1u), manager_(nullptr) { |
15 } | 15 } |
16 | 16 |
17 void SurfaceIdAllocator::RegisterSurfaceIdNamespace(SurfaceManager* manager) { | 17 void SurfaceIdAllocator::RegisterSurfaceIdNamespace(SurfaceManager* manager) { |
18 DCHECK(!manager_); | 18 DCHECK(!manager_); |
19 manager_ = manager; | 19 manager_ = manager; |
20 manager_->RegisterSurfaceIdNamespace(id_namespace_); | 20 manager_->RegisterSurfaceIdNamespace(id_namespace_); |
21 } | 21 } |
22 | 22 |
23 SurfaceIdAllocator::~SurfaceIdAllocator() { | 23 SurfaceIdAllocator::~SurfaceIdAllocator() { |
24 if (manager_) | 24 if (manager_) |
25 manager_->InvalidateSurfaceIdNamespace(id_namespace_); | 25 manager_->InvalidateSurfaceIdNamespace(id_namespace_); |
26 } | 26 } |
27 | 27 |
28 SurfaceId SurfaceIdAllocator::GenerateId() { | 28 SurfaceId SurfaceIdAllocator::GenerateId() { |
29 SurfaceId id(static_cast<uint64_t>(id_namespace_) << 32 | next_id_); | 29 SurfaceId id(id_namespace_, next_id_); |
30 next_id_++; | 30 next_id_++; |
31 return id; | 31 return id; |
32 } | 32 } |
33 | 33 |
34 // static | 34 // static |
35 uint32_t SurfaceIdAllocator::NamespaceForId(SurfaceId id) { | 35 uint32_t SurfaceIdAllocator::NamespaceForId(SurfaceId id) { |
36 return id.id >> 32; | 36 return id.id_namespace; |
37 } | 37 } |
38 | 38 |
39 } // namespace cc | 39 } // namespace cc |
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