mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-01 15:00:00 +00:00
40 lines
933 B
Go
40 lines
933 B
Go
package mutexes
|
|
|
|
import "sync"
|
|
|
|
// WithSafety wrapps the supplied Mutex to protect unlock fns
|
|
// from being called multiple times
|
|
func WithSafety(mu Mutex) Mutex {
|
|
return &safeMutex{mu: mu}
|
|
}
|
|
|
|
// WithSafetyRW wrapps the supplied RWMutex to protect unlock
|
|
// fns from being called multiple times
|
|
func WithSafetyRW(mu RWMutex) RWMutex {
|
|
return &safeRWMutex{mu: mu}
|
|
}
|
|
|
|
// safeMutex simply wraps a Mutex to add multi-unlock safety
|
|
type safeMutex struct{ mu Mutex }
|
|
|
|
func (mu *safeMutex) Lock() func() {
|
|
unlock := mu.mu.Lock()
|
|
once := sync.Once{}
|
|
return func() { once.Do(unlock) }
|
|
}
|
|
|
|
// safeRWMutex simply wraps a RWMutex to add multi-unlock safety
|
|
type safeRWMutex struct{ mu RWMutex }
|
|
|
|
func (mu *safeRWMutex) Lock() func() {
|
|
unlock := mu.mu.Lock()
|
|
once := sync.Once{}
|
|
return func() { once.Do(unlock) }
|
|
}
|
|
|
|
func (mu *safeRWMutex) RLock() func() {
|
|
unlock := mu.mu.RLock()
|
|
once := sync.Once{}
|
|
return func() { once.Do(unlock) }
|
|
}
|