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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/graphite_cache_controller.h"
#include <atomic>
#include "base/functional/callback_helpers.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "gpu/command_buffer/service/graphite_image_provider.h"
#include "gpu/command_buffer/service/graphite_shared_context.h"
#include "skia/buildflags.h"
#include "third_party/skia/include/gpu/graphite/Context.h"
#include "third_party/skia/include/gpu/graphite/Recorder.h"
#if BUILDFLAG(SKIA_USE_DAWN)
#include "gpu/command_buffer/service/dawn_context_provider.h"
#endif
namespace gpu::raster {
namespace {
// Any resources not used in the last 5 seconds should be purged.
constexpr base::TimeDelta kResourceNotUsedSinceDelay = base::Seconds(5);
// All unused resources should be purged after an idle time delay of 1 seconds.
constexpr base::TimeDelta kCleanUpAllResourcesDelay = base::Seconds(1);
// Global atomic idle id shared between all instances of this class. There are
// multiple GraphiteCacheControllers used from gpu threads and we want to defer
// cleanup until all those threads are idle.
std::atomic<uint32_t> g_current_idle_id = 0;
} // namespace
GraphiteCacheController::GraphiteCacheController(
skgpu::graphite::Recorder* recorder,
bool can_handle_context_resources,
DawnContextProvider* dawn_context_provider)
: recorder_(recorder),
dawn_context_provider_(dawn_context_provider),
#if BUILDFLAG(SKIA_USE_DAWN)
can_handle_context_resources_(can_handle_context_resources &&
dawn_context_provider) {
#else
can_handle_context_resources_(false) {
#endif
CHECK(recorder_);
DETACH_FROM_SEQUENCE(sequence_checker_);
}
GraphiteCacheController::~GraphiteCacheController() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void GraphiteCacheController::ScheduleCleanup() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (can_handle_context_resources_) {
GetGraphiteSharedContext()->performDeferredCleanup(
std::chrono::seconds(kResourceNotUsedSinceDelay.InSeconds()));
}
auto* image_provider =
static_cast<GraphiteImageProvider*>(recorder_->clientImageProvider());
image_provider->PurgeImagesNotUsedSince(kResourceNotUsedSinceDelay);
recorder_->performDeferredCleanup(
std::chrono::seconds(kResourceNotUsedSinceDelay.InSeconds()));
if (UseGlobalIdleId()) {
g_current_idle_id.fetch_add(1, std::memory_order_relaxed);
} else {
++local_idle_id_;
}
if (idle_cleanup_cb_.IsCancelled()) {
ScheduleCleanUpAllResources(GetIdleId());
}
}
void GraphiteCacheController::CleanUpScratchResources() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (can_handle_context_resources_) {
GetGraphiteSharedContext()->freeGpuResources();
}
recorder_->freeGpuResources();
}
void GraphiteCacheController::CleanUpAllResources() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
idle_cleanup_cb_.Cancel();
CleanUpAllResourcesImpl();
}
bool GraphiteCacheController::UseGlobalIdleId() const {
return dawn_context_provider_ != nullptr;
}
uint32_t GraphiteCacheController::GetIdleId() const {
return UseGlobalIdleId() ? g_current_idle_id.load(std::memory_order_relaxed)
: local_idle_id_;
}
void GraphiteCacheController::ScheduleCleanUpAllResources(uint32_t idle_id) {
idle_cleanup_cb_.Reset(
base::BindOnce(&GraphiteCacheController::MaybeCleanUpAllResources,
weak_ptr_factory_.GetWeakPtr(), idle_id));
base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE, idle_cleanup_cb_.callback(), kCleanUpAllResourcesDelay);
}
void GraphiteCacheController::MaybeCleanUpAllResources(
uint32_t posted_idle_id) {
idle_cleanup_cb_.Cancel();
uint32_t current_idle_id = GetIdleId();
if (posted_idle_id != current_idle_id) {
// If `GetIdleId()` has changed since this task was posted then the
// GPU process has not been idle. Check again after another delay.
ScheduleCleanUpAllResources(current_idle_id);
return;
}
CleanUpAllResourcesImpl();
}
void GraphiteCacheController::CleanUpAllResourcesImpl() {
auto* image_provider =
static_cast<GraphiteImageProvider*>(recorder_->clientImageProvider());
image_provider->ClearImageCache();
CleanUpScratchResources();
#if BUILDFLAG(SKIA_USE_DAWN)
if (can_handle_context_resources_) {
if (dawn::native::ReduceMemoryUsage(
dawn_context_provider_->GetDevice().Get())) {
// There is scheduled work on the GPU that must complete before finishing
// cleanup. Schedule cleanup to run again after a delay.
ScheduleCleanUpAllResources(GetIdleId());
}
dawn::native::PerformIdleTasks(dawn_context_provider_->GetDevice());
}
#endif
}
GraphiteSharedContext* GraphiteCacheController::GetGraphiteSharedContext() {
#if BUILDFLAG(SKIA_USE_DAWN)
if (dawn_context_provider_) {
return dawn_context_provider_->GetGraphiteSharedContext();
}
#endif
return nullptr;
}
} // namespace gpu::raster
|
