forked from Silverfish/proton-bridge
2bda47fcad
Instead of the annoying safe.Map type, we just use a normal go map and mutex pair, and use safe.Lock/safe.RLock as a helper function
88 lines
1.0 KiB
Go
88 lines
1.0 KiB
Go
package safe
|
|
|
|
type Mutex interface {
|
|
Lock()
|
|
Unlock()
|
|
}
|
|
|
|
func Lock(fn func(), m ...Mutex) {
|
|
if len(m) == 0 {
|
|
panic("no mutexes provided")
|
|
}
|
|
|
|
for _, m := range m {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
}
|
|
|
|
fn()
|
|
}
|
|
|
|
func LockRet[T any](fn func() T, m ...Mutex) T {
|
|
var ret T
|
|
|
|
Lock(func() {
|
|
ret = fn()
|
|
}, m...)
|
|
|
|
return ret
|
|
}
|
|
|
|
func LockRetErr[T any](fn func() (T, error), m ...Mutex) (T, error) {
|
|
var ret T
|
|
|
|
err := LockRet(func() error {
|
|
var err error
|
|
|
|
ret, err = fn()
|
|
|
|
return err
|
|
}, m...)
|
|
|
|
return ret, err
|
|
}
|
|
|
|
type RWMutex interface {
|
|
Mutex
|
|
|
|
RLock()
|
|
RUnlock()
|
|
}
|
|
|
|
func RLock(fn func(), m ...RWMutex) {
|
|
if len(m) == 0 {
|
|
panic("no mutexes provided")
|
|
}
|
|
|
|
for _, m := range m {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
}
|
|
|
|
fn()
|
|
}
|
|
|
|
func RLockRet[T any](fn func() T, m ...RWMutex) T {
|
|
var ret T
|
|
|
|
RLock(func() {
|
|
ret = fn()
|
|
}, m...)
|
|
|
|
return ret
|
|
}
|
|
|
|
func RLockRetErr[T any](fn func() (T, error), m ...RWMutex) (T, error) {
|
|
var err error
|
|
|
|
ret := RLockRet(func() T {
|
|
var ret T
|
|
|
|
ret, err = fn()
|
|
|
|
return ret
|
|
}, m...)
|
|
|
|
return ret, err
|
|
}
|