internal

Records

class DataSourceInstanceThreadLocalState

Functions

```
TracedValue CreateTracedValueFromProto (protos::pbzero::DebugAnnotation * , EventContext * )
```
TODO(altimin): Currently EventContext can be null due the need to support

TracedValue-based serialisation with the Chrome's TraceLog. After this is

gone, the second parameter should be changed to EventContext

&

.
```
void WriteTrackEventArgs (EventContext )
```
No arguments means that we don't have to write anything.

Defined at line 29 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h
```
template <size_t N>
```
```
const char * GetStaticString (const char (&)[N] string)
```
Defined at line 68 of file ../../third_party/perfetto/include/perfetto/tracing/string_helpers.h
```
std::nullptr_t GetStaticString (std::nullptr_t )
```
Defined at line 72 of file ../../third_party/perfetto/include/perfetto/tracing/string_helpers.h
```
const char * GetStaticString (perfetto::StaticString string)
```
Defined at line 76 of file ../../third_party/perfetto/include/perfetto/tracing/string_helpers.h

template <typename ArgumentFunction, typename ArgFunctionCheck = typename std::enable_if<
                                          IsValidTraceLambda<ArgumentFunction>()>::type>

void WriteTrackEventArgs (EventContext event_ctx, const ArgumentFunction & arg_function)

Write an old-style lambda taking an EventContext (without a reference)

as it will consume EventContext via std::move, it can only be the last

argument.

Defined at line 102 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h

template <typename ArgumentFunction, typename... Args, typename ArgFunctionCheck = typename std::enable_if<
                                          IsValidTraceLambdaTakingReference<ArgumentFunction>()>::type>

void WriteTrackEventArgs (EventContext event_ctx, const ArgumentFunction & arg_function, Args &&... args)

Defined at line 130 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h

```
template <typename ArgValue, typename... Args>
```
```
void WriteTrackEventArgs (EventContext event_ctx, const char * arg_name, ArgValue && arg_value, Args &&... args)
```
Forward-declare the specification for writing untyped arguments to ensure

that typed specification could recursively pick it up.

Defined at line 167 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h

template <typename FieldMetadataType, typename ArgValue, typename... Args, typename FieldMetadataTypeCheck = typename std::enable_if<
                                          IsFieldMetadataType<FieldMetadataType>()>::type>

void WriteTrackEventArgs (EventContext event_ctx, FieldMetadataType field_name, ArgValue && arg_value, Args &&... args)

Write one typed message and recursively write the rest of the arguments.

Defined at line 146 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h

```
::perfetto::DynamicString DecayEventNameType (::perfetto::DynamicString name)
```
Defined at line 170 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_data_source.h
```
const char * NullCategory (const char * )
```
Defined at line 171 of file ../../third_party/perfetto/include/perfetto/tracing/track_event_category_registry.h
```
::perfetto::StaticString DecayEventNameType (::perfetto::StaticString name)
```
Defined at line 175 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_data_source.h

perfetto::DynamicCategory NullCategory (const perfetto::DynamicCategory & )

```
bool StringMatchesPrefix (const char * str, const char * prefix)
```
Defined at line 177 of file ../../third_party/perfetto/include/perfetto/tracing/track_event_category_registry.h
```
template <typename ArgValue, typename... Args>
```
```
void WriteTrackEventArgs (EventContext event_ctx, DynamicString arg_name, ArgValue && arg_value, Args &&... args)
```
Write one debug annotation and recursively write the rest of the arguments.

Defined at line 177 of file ../../third_party/perfetto/include/perfetto/tracing/internal/write_track_event_args.h
```
::perfetto::StaticString DecayEventNameType (const char * name)
```
Convert all static strings of different length to StaticString to avoid

unnecessary template instantiations.

Defined at line 182 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_data_source.h
```
bool IsStringInPrefixList (const char * )
```
Defined at line 184 of file ../../third_party/perfetto/include/perfetto/tracing/track_event_category_registry.h
```
template <typename... Args>
```
```
bool IsStringInPrefixList (const char * str, const char * prefix, Args... args)
```
Defined at line 189 of file ../../third_party/perfetto/include/perfetto/tracing/track_event_category_registry.h

template <typename MessageType, typename T>

decltype(TraceFormatTraits<base::remove_cvref_t<T>>::WriteIntoTrace(std::declval<TracedProto<MessageType>>(), std::declval<T>()) , void()) WriteIntoTracedProtoImpl (base::priority_tag<1> , TracedProto<MessageType> message, T && value)

If perfetto::TraceFormatTraits

>::WriteIntoTrace(TracedProto

<MessageType

T) is available, use it.

Defined at line 297 of file ../../third_party/perfetto/include/perfetto/tracing/traced_proto.h

template <typename MessageType, typename T>

decltype(std::declval<T>().WriteIntoTrace(std::declval<TracedProto<MessageType>>()) , void()) WriteIntoTracedProtoImpl (base::priority_tag<0> , TracedProto<MessageType> message, T && value)

If T has WriteIntoTrace(TracedProto

<MessageType

>) method, use it.

Defined at line 310 of file ../../third_party/perfetto/include/perfetto/tracing/traced_proto.h

template <typename T>

decltype(std::declval<T>().WriteIntoTracedValue(std::declval<TracedValue>()) , void()) WriteImpl (base::priority_tag<4> , TracedValue context, T && value)

If T has WriteIntoTracedValue member function, call it.

Defined at line 334 of file ../../third_party/perfetto/include/perfetto/tracing/traced_value.h

template <typename T>

decltype(TraceFormatTraits<base::remove_cvref_t<T>>::WriteIntoTracedValue(std::declval<TracedValue>(), std::declval<T>()) , void()) WriteImpl (base::priority_tag<3> , TracedValue context, T && value)

If perfetto::TraceFormatTraits

>::WriteIntoTracedValue(TracedValue, const

) is available, use it.

Defined at line 350 of file ../../third_party/perfetto/include/perfetto/tracing/traced_value.h

```
template <typename T>
```
```
decltype(std::declval<T>()(std::declval<TracedValue>()) , void()) WriteImpl (base::priority_tag<2> , TracedValue context, T && value)
```
If T has operator(), which takes TracedValue, use it.

Very useful for lambda resolutions.

Defined at line 374 of file ../../third_party/perfetto/include/perfetto/tracing/traced_value.h
```
template <typename T>
```
```
typename check_traced_value_support<decltype(*std::begin(std::declval<T &>()))>::type WriteImpl (base::priority_tag<1> , TracedValue context, T && value)
```
If T is a container and its elements have tracing support, use it.

Note: a reference to T should be passed to std::begin, otherwise

for non-reference types const T

&

will be passed to std::begin, losing

support for non-const WriteIntoTracedValue methods.

Defined at line 385 of file ../../third_party/perfetto/include/perfetto/tracing/traced_value.h
```
template <typename T>
```
```
T PossiblyNull (T && value)
```
Legacy macros allow argument values to be nullptr and convert them to the

"NULL" string. The following function helps mimic this behavior: it forwards

all types of arguments apart from a nullptr string as is, and in case of a

nullptr returns "NULL".

Defined at line 447 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_legacy.h
```
const char * PossiblyNull (const char * name)
```
Defined at line 451 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_legacy.h
```
const char * PossiblyNull (char * name)
```
Defined at line 455 of file ../../third_party/perfetto/include/perfetto/tracing/internal/track_event_legacy.h