72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
/*
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* Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package sync
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// llgo:skipall
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import (
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"unsafe"
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"github.com/goplus/llgo/c"
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"github.com/goplus/llgo/c/pthread/sync"
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)
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const (
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LLGoPackage = "link"
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)
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// -----------------------------------------------------------------------------
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type Mutex sync.Mutex
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func (m *Mutex) Lock() {
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if *(*c.Long)(unsafe.Pointer(m)) == 0 {
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(*sync.Mutex)(m).Init(nil)
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}
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(*sync.Mutex)(m).Lock()
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}
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func (m *Mutex) TryLock() bool {
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if *(*c.Long)(unsafe.Pointer(m)) == 0 {
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(*sync.Mutex)(m).Init(nil)
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}
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return (*sync.Mutex)(m).TryLock() == 0
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}
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func (m *Mutex) Unlock() {
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(*sync.Mutex)(m).Unlock()
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}
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// -----------------------------------------------------------------------------
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type Once struct {
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m Mutex
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done bool
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}
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func (o *Once) Do(f func()) {
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if !o.done {
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o.m.Lock()
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defer o.m.Unlock()
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if !o.done {
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o.done = true
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f()
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}
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}
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}
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// -----------------------------------------------------------------------------
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