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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "time_tracer.h"
namespace vespalib::test {
//-----------------------------------------------------------------------------
TimeTracer &
TimeTracer::master()
{
static TimeTracer instance;
return instance;
}
//-----------------------------------------------------------------------------
thread_local TimeTracer::ThreadState *TimeTracer::_thread_state = nullptr;
//-----------------------------------------------------------------------------
TimeTracer::Tag::Tag(const vespalib::string &name)
: _id(master().get_tag_id(name))
{
}
TimeTracer::Tag::~Tag() = default;
//-----------------------------------------------------------------------------
double
TimeTracer::Record::ms_duration() const
{
return std::chrono::duration<double, std::milli>(stop - start).count();
}
vespalib::string
TimeTracer::Record::tag_name() const
{
return master().get_tag_name(tag_id);
}
//-----------------------------------------------------------------------------
bool
TimeTracer::Extractor::keep(const Record &entry) const
{
return ((!_by_thread || (entry.thread_id == _thread_id)) &&
(!_by_tag || (entry.tag_id == _tag_id)) &&
(!_by_time || (entry.stop > _a)) &&
(!_by_time || (entry.start < _b)));
}
TimeTracer::Extractor &&
TimeTracer::Extractor::by_thread(uint32_t thread_id) &&
{
_by_thread = true;
_thread_id = thread_id;
return std::move(*this);
}
TimeTracer::Extractor &&
TimeTracer::Extractor::by_tag(uint32_t tag_id) &&
{
_by_tag = true;
_tag_id = tag_id;
return std::move(*this);
}
TimeTracer::Extractor &&
TimeTracer::Extractor::by_time(time_point a, time_point b) &&
{
_by_time = true;
_a = a;
_b = b;
return std::move(*this);
}
std::vector<TimeTracer::Record>
TimeTracer::Extractor::get() const
{
return master().extract_impl(*this);
}
TimeTracer::Extractor::~Extractor() = default;
//-----------------------------------------------------------------------------
void
TimeTracer::init_thread_state() noexcept
{
_thread_state = master().create_thread_state();
}
//-----------------------------------------------------------------------------
TimeTracer::TimeTracer()
: _lock(),
_state_list(),
_tags(),
_tag_names()
{
}
uint32_t
TimeTracer::get_tag_id(const vespalib::string &tag_name)
{
std::lock_guard guard(_lock);
auto pos = _tags.find(tag_name);
if (pos != _tags.end()) {
return pos->second;
}
uint32_t id = _tags.size();
_tags[tag_name] = id;
_tag_names.push_back(tag_name);
return id;
}
vespalib::string
TimeTracer::get_tag_name(uint32_t tag_id)
{
std::lock_guard guard(_lock);
if (tag_id < _tag_names.size()) {
return _tag_names[tag_id];
} else {
return "<undef>";
}
}
TimeTracer::ThreadState *
TimeTracer::create_thread_state()
{
std::lock_guard guard(_lock);
uint32_t thread_id = _state_list.size();
_state_list.push_back(std::make_unique<ThreadState>(thread_id));
return _state_list.back().get();
}
std::vector<TimeTracer::Record>
TimeTracer::extract_impl(const Extractor &extractor)
{
std::lock_guard guard(_lock);
std::vector<Record> list;
for (const ThreadState::UP &state: _state_list) {
const LogEntry *entry = state->get_log_entries();
while (entry != nullptr) {
Record record(state->thread_id(), entry->tag_id, entry->start, entry->stop);
if (extractor.keep(record)) {
list.push_back(record);
}
entry = entry->next;
}
}
return list;
}
TimeTracer::~TimeTracer() = default;
//-----------------------------------------------------------------------------
} // namespace vespalib::test
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