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
|
// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/trace_event/trace_session_observer.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
namespace base::trace_event {
namespace {
class StopArgsImpl : public perfetto::DataSourceBase::StopArgs {
public:
explicit StopArgsImpl(const perfetto::DataSourceBase::StopArgs& args)
: StopArgs(args) {}
std::function<void()> HandleStopAsynchronously() const override { // nocheck
// HandleStopAsynchronously not supported.
NOTREACHED();
}
};
bool IsEnabledExludingOnStopInstance(
uint32_t instances,
const perfetto::DataSourceBase::StopArgs& args) {
return instances &
~(static_cast<uint32_t>(1) << args.internal_instance_index);
}
} // namespace
bool IsEnabledOnStop(const perfetto::DataSourceBase::StopArgs& args) {
bool enabled = true;
base::TrackEvent::CallIfEnabled([&](uint32_t instances) {
enabled = IsEnabledExludingOnStopInstance(instances, args);
});
return enabled;
}
bool IsCategoryEnabledOnStop(size_t category_index,
const perfetto::DataSourceBase::StopArgs& args) {
bool enabled = true;
base::TrackEvent::CallIfCategoryEnabled(
category_index, [&](uint32_t instances) {
enabled = IsEnabledExludingOnStopInstance(instances, args);
});
return enabled;
}
// static
void TraceSessionObserverList::Initialize() {
GetInstance();
}
// static
TraceSessionObserverList& TraceSessionObserverList::GetInstance() {
static NoDestructor<TraceSessionObserverList> instance;
return *instance;
}
TraceSessionObserverList::TraceSessionObserverList()
: observers_(base::MakeRefCounted<ObserverList>()) {
base::TrackEvent::AddSessionObserver(this);
}
TraceSessionObserverList::~TraceSessionObserverList() {
base::TrackEvent::RemoveSessionObserver(this);
}
void TraceSessionObserverList::AddObserver(
perfetto::TrackEventSessionObserver* observer) {
GetInstance().observers_->AddObserver(observer);
}
void TraceSessionObserverList::RemoveObserver(
perfetto::TrackEventSessionObserver* observer) {
GetInstance().observers_->RemoveObserver(observer);
}
void TraceSessionObserverList::OnSetup(
const perfetto::DataSourceBase::SetupArgs& args) {
observers_->Notify(FROM_HERE, &perfetto::TrackEventSessionObserver::OnSetup,
args);
}
void TraceSessionObserverList::OnStart(
const perfetto::DataSourceBase::StartArgs& args) {
observers_->Notify(FROM_HERE, &perfetto::TrackEventSessionObserver::OnStart,
args);
}
void TraceSessionObserverList::OnStop(
const perfetto::DataSourceBase::StopArgs& args) {
observers_->Notify(FROM_HERE, &perfetto::TrackEventSessionObserver::OnStop,
StopArgsImpl{args});
}
void TraceSessionObserverList::WillClearIncrementalState(
const perfetto::DataSourceBase::ClearIncrementalStateArgs& args) {
observers_->Notify(
FROM_HERE,
&perfetto::TrackEventSessionObserver::WillClearIncrementalState, args);
}
} // namespace base::trace_event
|
