Documentation
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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type TimedMutex ¶
type TimedMutex struct {
// contains filtered or unexported fields
}
TimedMutex is a mutex which dumps a stack trace via the supplied callback whenever a lock is unlocked after having been held for longer than the supplied duration, which must be strictly positive.
func MakeTimedMutex ¶
func MakeTimedMutex(cb TimingFn) TimedMutex
MakeTimedMutex creates a TimedMutex which warns when an Unlock happens more than warnDuration after the corresponding lock. It will use the supplied context and logging callback for the warning message; a nil logger falls back to Fprintf to os.Stderr.
type TimingFn ¶
TimingFn is a callback passed to MakeTimedMutex. It is invoked with the measured duration of the critical section of the associated mutex after each Unlock operation.
func ThresholdLogger ¶
func ThresholdLogger( ctx context.Context, warnDuration time.Duration, printf func(context.Context, string, ...interface{}), record TimingFn, ) TimingFn
ThresholdLogger returns a timing function which calls 'record' for each measured duration and, for measurements exceeding 'warnDuration', invokes 'printf' with the passed context and a detailed stack trace.
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