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Profiler: Add ability to process read syscalls

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Profiler can now process and display read events.
This commit is contained in:
Jakub Berkop 2022-02-12 16:58:01 +01:00 • committed by Andreas Kling
parent fae991f599
commit cdfb388154
4 changed files with 28 additions and 1 deletions
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9
Userland/DevTools/Profiler/Profile.cpp
View file

@ -369,6 +369,15 @@ ErrorOr<NonnullOwnPtr<Profile>> Profile::load_from_perfcore_file(StringView path
if (it != current_processes.end())
it->value->handle_thread_exit(event.tid, event.serial);
continue;
} else if (type_string == "read"sv) {
const auto string_index = perf_event.get("filename_index"sv).to_number<FlatPtr>();
event.data = Event::ReadData {
.fd = perf_event.get("fd"sv).to_number<int>(),
.size = perf_event.get("size"sv).to_number<size_t>(),
.path = profile_strings.get(string_index).value(),
.start_timestamp = perf_event.get("start_timestamp"sv).to_number<size_t>(),
.success = perf_event.get("success"sv).to_bool()
};
} else {
dbgln("Unknown event type '{}'", type_string);
VERIFY_NOT_REACHED();

10
Userland/DevTools/Profiler/Profile.h
View file

@ -221,7 +221,15 @@ public:
pid_t parent_tid {};
};
Variant<std::nullptr_t, SampleData, MallocData, FreeData, SignpostData, MmapData, MunmapData, ProcessCreateData, ProcessExecData, ThreadCreateData> data { nullptr };
struct ReadData {
int fd;
size_t size;
String path;
size_t start_timestamp;
bool success;
};
Variant<std::nullptr_t, SampleData, MallocData, FreeData, SignpostData, MmapData, MunmapData, ProcessCreateData, ProcessExecData, ThreadCreateData, ReadData> data { nullptr };
};
Vector<Event> const& events() const { return m_events; }

9
Userland/DevTools/Profiler/SamplesModel.cpp
View file

@ -48,6 +48,8 @@ String SamplesModel::column_name(int column) const
return "Lost Samples";
case Column::InnermostStackFrame:
return "Innermost Frame";
case Column::Path:
return "Path";
default:
VERIFY_NOT_REACHED();
}
@ -89,6 +91,13 @@ GUI::Variant SamplesModel::data(GUI::ModelIndex const& index, GUI::ModelRole rol
if (index.column() == Column::InnermostStackFrame) {
return event.frames.last().symbol;
}
if (index.column() == Column::Path) {
if (!event.data.has<Profile::Event::ReadData>())
return "";
return event.data.get<Profile::Event::ReadData>().path;
}
return {};
}
return {};

1
Userland/DevTools/Profiler/SamplesModel.h
View file

@ -27,6 +27,7 @@ public:
ExecutableName,
LostSamples,
InnermostStackFrame,
Path,
__Count
};