EventLoopWatchdog Class Reference

Detects blocked or overloaded worker event loops. More...

#include <event_loop_watchdog.h>

Inheritance diagram for EventLoopWatchdog:

Collaboration diagram for EventLoopWatchdog:

Public Member Functions
	EventLoopWatchdog (Servatrice *_servatrice, QString _threadName)
void	start ()

Static Public Attributes
static constexpr int	HeartbeatIntervalMs = 500
	How often the heartbeat expects to fire. Small enough to catch short stalls.

Private Slots
void	checkHeartbeat ()

Private Attributes
Servatrice *	servatrice
QString	threadName
QElapsedTimer	sinceLastTick
QTimer *	heartbeatTimer = nullptr

Detailed Description

Detects blocked or overloaded worker event loops.

One instance lives in each socket pool thread. A heartbeat timer tick that arrives late means the loop spent that time elsewhere: busy work, a queued slot, or a hard wedge. Overshoots past the configured threshold bump lock-free counters on the metrics registry and log one warning per stall, so a stuck pool thread becomes visible instead of silent lag.

Constructor & Destructor Documentation

EventLoopWatchdog()

EventLoopWatchdog::EventLoopWatchdog	(	Servatrice *	_servatrice,
		QString	_threadName )

Here is the caller graph for this function:

Member Function Documentation

checkHeartbeat

void EventLoopWatchdog::checkHeartbeat ( )

privateslot

Here is the call graph for this function:

Here is the caller graph for this function:

start()

void EventLoopWatchdog::start

(

)

Starts the heartbeat timer. Must be invoked queued after the instance was moved to its target thread so the timer lives there too.

Here is the call graph for this function:

Here is the caller graph for this function:

Member Data Documentation

HeartbeatIntervalMs

int EventLoopWatchdog::HeartbeatIntervalMs = 500

staticconstexpr

How often the heartbeat expects to fire. Small enough to catch short stalls.

heartbeatTimer

QTimer* EventLoopWatchdog::heartbeatTimer = nullptr

private

servatrice

Servatrice* EventLoopWatchdog::servatrice

private

sinceLastTick

QElapsedTimer EventLoopWatchdog::sinceLastTick

private

threadName

QString EventLoopWatchdog::threadName

private

---

The documentation for this class was generated from the following files:

• servatrice/src/event_loop_watchdog.h
• servatrice/src/event_loop_watchdog.cpp