memoryusagealarm

Documentation

Index

• type AlarmReason
  • func (reason AlarmReason) String() string
• type Handle
  • func NewMemoryUsageAlarmHandle(exitCh chan struct{}) *Handle
  • func (eqh *Handle) Run()
  • func (eqh *Handle) SetSessionManager(sm util.SessionManager) *Handle

Types

type AlarmReason

type AlarmReason uint

AlarmReason implements alarm reason.

const (
	// GrowTooFast is the reason that memory increasing too fast.
	GrowTooFast AlarmReason = iota
	// ExceedAlarmRatio is the reason that memory used exceed threshold.
	ExceedAlarmRatio
	// NoReason means no alarm
	NoReason
)

func (AlarmReason) String

func (reason AlarmReason) String() string

type Handle

type Handle struct {
	// contains filtered or unexported fields
}

Handle is the handler for expensive query.

func NewMemoryUsageAlarmHandle

func NewMemoryUsageAlarmHandle(exitCh chan struct{}) *Handle

NewMemoryUsageAlarmHandle builds a memory usage alarm handler.

func (*Handle) Run

func (eqh *Handle) Run()

Run starts a memory usage alarm goroutine at the start time of the server.

func (*Handle) SetSessionManager

func (eqh *Handle) SetSessionManager(sm util.SessionManager) *Handle

SetSessionManager sets the SessionManager which is used to fetching the info of all active sessions.