OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📁 atomic	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📄 cond.go	3.96 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 cond_test.go	4.96 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 example_pool_test.go	1017 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 example_test.go	1.13 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 export_test.go	1.2 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 map.go	14.98 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 map_bench_test.go	11.25 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 map_reference_test.go	5.41 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 map_test.go	6.74 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 mutex.go	8.27 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 mutex_test.go	5.94 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 once.go	2.4 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 once_test.go	1.1 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 oncefunc.go	2 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 oncefunc_test.go	6.94 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 pool.go	9 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 pool_test.go	8.1 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 poolqueue.go	8.73 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 runtime.go	2.33 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 runtime2.go	465 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 runtime2_lockrank.go	546 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 runtime_sema_test.go	1.34 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 rwmutex.go	7.02 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 rwmutex_test.go	4.89 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 waitgroup.go	3.87 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 waitgroup_test.go	3.01 KB	02/02/2024 06:09:55 PM	rw-r--r--

Editing: oncefunc.go

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sync

// OnceFunc returns a function that invokes f only once. The returned function
// may be called concurrently.
//
// If f panics, the returned function will panic with the same value on every call.
func OnceFunc(f func()) func() {
	var (
		once  Once
		valid bool
		p     any
	)
	// Construct the inner closure just once to reduce costs on the fast path.
	g := func() {
		defer func() {
			p = recover()
			if !valid {
				// Re-panic immediately so on the first call the user gets a
				// complete stack trace into f.
				panic(p)
			}
		}()
		f()
		f = nil      // Do not keep f alive after invoking it.
		valid = true // Set only if f does not panic.
	}
	return func() {
		once.Do(g)
		if !valid {
			panic(p)
		}
	}
}

// OnceValue returns a function that invokes f only once and returns the value
// returned by f. The returned function may be called concurrently.
//
// If f panics, the returned function will panic with the same value on every call.
func OnceValue[T any](f func() T) func() T {
	var (
		once   Once
		valid  bool
		p      any
		result T
	)
	g := func() {
		defer func() {
			p = recover()
			if !valid {
				panic(p)
			}
		}()
		result = f()
		f = nil
		valid = true
	}
	return func() T {
		once.Do(g)
		if !valid {
			panic(p)
		}
		return result
	}
}

// OnceValues returns a function that invokes f only once and returns the values
// returned by f. The returned function may be called concurrently.
//
// If f panics, the returned function will panic with the same value on every call.
func OnceValues[T1, T2 any](f func() (T1, T2)) func() (T1, T2) {
	var (
		once  Once
		valid bool
		p     any
		r1    T1
		r2    T2
	)
	g := func() {
		defer func() {
			p = recover()
			if !valid {
				panic(p)
			}
		}()
		r1, r2 = f()
		f = nil
		valid = true
	}
	return func() (T1, T2) {
		once.Do(g)
		if !valid {
			panic(p)
		}
		return r1, r2
	}
}