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[traffic] Defer TrafficManager startup until MWMs are first updated

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Signed-off-by: mvglasow <michael -at- vonglasow.com>
This commit is contained in:
mvglasow
2025-05-16 02:01:06 +03:00
parent e94c23d538
commit c8d5a07262
2 changed files with 25 additions and 14 deletions
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34
map/traffic_manager.cpp
View File

@@ -73,6 +73,7 @@ TrafficManager::TrafficManager(DataSource & dataSource,
, m_maxCacheSizeBytes(maxCacheSizeBytes)
#endif
, m_isRunning(true)
, m_isStarted(false)
, m_isPaused(false)
, m_thread(&TrafficManager::ThreadRoutine, this)
{
@@ -211,6 +212,7 @@ void TrafficManager::UpdateActiveMwms(m2::RectD const & rect,
{
std::lock_guard<std::mutex> lock(m_mutex);
m_isStarted = true;
m_activeMwmsChanged = true;
activeMwms.clear();
for (auto const & mwm : mwms)
@@ -660,21 +662,24 @@ bool TrafficManager::WaitForRequest(std::vector<MwmSet::MwmId> & mwms)
if (!m_isRunning)
return false;
// if we have feeds in the queue, return immediately
if (!m_feedQueue.empty())
if (m_isStarted)
{
LOG(LINFO, ("feed queue not empty, returning immediately"));
return true;
}
// if we have feeds in the queue, return immediately
if (!m_feedQueue.empty())
{
LOG(LINFO, ("feed queue not empty, returning immediately"));
return true;
}
// if update interval has elapsed, return immediately
auto const currentTime = steady_clock::now();
auto const passedSeconds = currentTime - m_lastResponseTime;
if (passedSeconds >= kUpdateInterval)
{
LOG(LINFO, ("last response was", passedSeconds, "ago, returning immediately"));
m_isPollNeeded = true;
return true;
// if update interval has elapsed, return immediately
auto const currentTime = steady_clock::now();
auto const passedSeconds = currentTime - m_lastResponseTime;
if (passedSeconds >= kUpdateInterval)
{
LOG(LINFO, ("last response was", passedSeconds, "ago, returning immediately"));
m_isPollNeeded = true;
return true;
}
}
LOG(LINFO, ("nothing to do for now, waiting for timeout or notification"));
@@ -688,7 +693,8 @@ bool TrafficManager::WaitForRequest(std::vector<MwmSet::MwmId> & mwms)
return false;
// this works as long as wait timeout is at least equal to the poll interval
m_isPollNeeded |= timeout;
if (m_isStarted)
m_isPollNeeded |= timeout;
LOG(LINFO, ("timeout:", timeout, "active MWMs changed:", m_activeMwmsChanged));
return true;

5
map/traffic_manager.hpp
View File

@@ -465,6 +465,11 @@ private:
// which allows a client to make conditional requests.
std::map<MwmSet::MwmId, std::string> m_trafficETags;
/**
* Whether the traffic manager should begin receiving information.
*/
std::atomic<bool> m_isStarted;
std::atomic<bool> m_isPaused;
/**