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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MainThreadUtils.h"
#include "VsyncDispatcher.h"
#include "VsyncSource.h"
#include "gfxPlatform.h"
#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/CompositorThread.h"
using namespace mozilla::layers;
namespace mozilla {
CompositorVsyncDispatcher::CompositorVsyncDispatcher()
: mVsyncSource(gfxPlatform::GetPlatform()->GetHardwareVsync()),
mCompositorObserverLock("CompositorObserverLock"),
mDidShutdown(false) {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
mVsyncSource->RegisterCompositorVsyncDispatcher(this);
}
CompositorVsyncDispatcher::CompositorVsyncDispatcher(
RefPtr<gfx::VsyncSource> aVsyncSource)
: mVsyncSource(std::move(aVsyncSource)),
mCompositorObserverLock("CompositorObserverLock"),
mDidShutdown(false) {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
mVsyncSource->RegisterCompositorVsyncDispatcher(this);
}
CompositorVsyncDispatcher::~CompositorVsyncDispatcher() {
MOZ_ASSERT(XRE_IsParentProcess());
// We auto remove this vsync dispatcher from the vsync source in the
// nsBaseWidget
}
void CompositorVsyncDispatcher::NotifyVsync(const VsyncEvent& aVsync) {
// In vsync thread
layers::CompositorBridgeParent::PostInsertVsyncProfilerMarker(aVsync.mTime);
MutexAutoLock lock(mCompositorObserverLock);
if (mCompositorVsyncObserver) {
mCompositorVsyncObserver->NotifyVsync(aVsync);
}
}
void CompositorVsyncDispatcher::MoveToSource(
const RefPtr<gfx::VsyncSource>& aVsyncSource) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(XRE_IsParentProcess());
mVsyncSource = aVsyncSource;
}
void CompositorVsyncDispatcher::ObserveVsync(bool aEnable) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(XRE_IsParentProcess());
if (mDidShutdown) {
return;
}
if (aEnable) {
mVsyncSource->EnableCompositorVsyncDispatcher(this);
} else {
mVsyncSource->DisableCompositorVsyncDispatcher(this);
}
}
void CompositorVsyncDispatcher::SetCompositorVsyncObserver(
VsyncObserver* aVsyncObserver) {
// When remote compositing or running gtests, vsync observation is
// initiated on the main thread. Otherwise, it is initiated from the
// compositor thread.
MOZ_ASSERT(NS_IsMainThread() ||
CompositorThreadHolder::IsInCompositorThread());
{ // scope lock
MutexAutoLock lock(mCompositorObserverLock);
mCompositorVsyncObserver = aVsyncObserver;
}
bool observeVsync = aVsyncObserver != nullptr;
nsCOMPtr<nsIRunnable> vsyncControl = NewRunnableMethod<bool>(
"CompositorVsyncDispatcher::ObserveVsync", this,
&CompositorVsyncDispatcher::ObserveVsync, observeVsync);
NS_DispatchToMainThread(vsyncControl);
}
void CompositorVsyncDispatcher::Shutdown() {
// Need to explicitly remove CompositorVsyncDispatcher when the nsBaseWidget
// shuts down. Otherwise, we would get dead vsync notifications between when
// the nsBaseWidget shuts down and the CompositorBridgeParent shuts down.
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mDidShutdown);
ObserveVsync(false);
mDidShutdown = true;
{ // scope lock
MutexAutoLock lock(mCompositorObserverLock);
mCompositorVsyncObserver = nullptr;
}
mVsyncSource->DeregisterCompositorVsyncDispatcher(this);
mVsyncSource = nullptr;
}
RefreshTimerVsyncDispatcher::RefreshTimerVsyncDispatcher(
gfx::VsyncSource::Display* aDisplay)
: mDisplay(aDisplay), mRefreshTimersLock("RefreshTimers lock") {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
}
RefreshTimerVsyncDispatcher::~RefreshTimerVsyncDispatcher() {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
}
void RefreshTimerVsyncDispatcher::MoveToDisplay(
gfx::VsyncSource::Display* aDisplay) {
MOZ_ASSERT(NS_IsMainThread());
mDisplay = aDisplay;
}
void RefreshTimerVsyncDispatcher::NotifyVsync(const VsyncEvent& aVsync) {
MutexAutoLock lock(mRefreshTimersLock);
for (size_t i = 0; i < mChildRefreshTimers.Length(); i++) {
mChildRefreshTimers[i]->NotifyVsync(aVsync);
}
if (mParentRefreshTimer) {
mParentRefreshTimer->NotifyVsync(aVsync);
}
}
void RefreshTimerVsyncDispatcher::SetParentRefreshTimer(
VsyncObserver* aVsyncObserver) {
MOZ_ASSERT(NS_IsMainThread());
{ // lock scope because UpdateVsyncStatus runs on main thread and will
// deadlock
MutexAutoLock lock(mRefreshTimersLock);
mParentRefreshTimer = aVsyncObserver;
}
UpdateVsyncStatus();
}
void RefreshTimerVsyncDispatcher::AddChildRefreshTimer(
VsyncObserver* aVsyncObserver) {
{ // scope lock - called on pbackground thread
MutexAutoLock lock(mRefreshTimersLock);
MOZ_ASSERT(aVsyncObserver);
if (!mChildRefreshTimers.Contains(aVsyncObserver)) {
mChildRefreshTimers.AppendElement(aVsyncObserver);
}
}
UpdateVsyncStatus();
}
void RefreshTimerVsyncDispatcher::RemoveChildRefreshTimer(
VsyncObserver* aVsyncObserver) {
{ // scope lock - called on pbackground thread
MutexAutoLock lock(mRefreshTimersLock);
MOZ_ASSERT(aVsyncObserver);
mChildRefreshTimers.RemoveElement(aVsyncObserver);
}
UpdateVsyncStatus();
}
void RefreshTimerVsyncDispatcher::UpdateVsyncStatus() {
if (!NS_IsMainThread()) {
NS_DispatchToMainThread(NewRunnableMethod(
"RefreshTimerVsyncDispatcher::UpdateVsyncStatus", this,
&RefreshTimerVsyncDispatcher::UpdateVsyncStatus));
return;
}
mDisplay->NotifyRefreshTimerVsyncStatus(NeedsVsync());
}
bool RefreshTimerVsyncDispatcher::NeedsVsync() {
MOZ_ASSERT(NS_IsMainThread());
MutexAutoLock lock(mRefreshTimersLock);
return (mParentRefreshTimer != nullptr) || !mChildRefreshTimers.IsEmpty();
}
} // namespace mozilla
|
