92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
//go:build !llgo
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// +build !llgo
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/*
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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 async
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import "sync"
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func BindIO[T any](call IO[T], callback func(T)) {
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callback(Await(call))
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}
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func Await[T1 any](call IO[T1]) (ret T1) {
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ch := make(chan struct{})
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f := call(&AsyncContext{
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Executor: Exec(),
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complete: func() {
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close(ch)
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},
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})
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<-ch
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return f()
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}
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// -----------------------------------------------------------------------------
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func Race[T1 any](calls ...IO[T1]) IO[T1] {
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return Async(func(resolve func(T1)) {
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ch := make(chan int, len(calls))
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futures := make([]Future[T1], len(calls))
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for i, call := range calls {
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i := i
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call := call
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go func() {
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f := call(&AsyncContext{
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Executor: Exec(),
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complete: func() {
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defer func() {
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_ = recover()
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}()
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ch <- i
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},
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})
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futures[i] = f
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}()
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}
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i := <-ch
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close(ch)
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resolve(futures[i]())
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})
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}
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func All[T1 any](calls ...IO[T1]) IO[[]T1] {
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return Async(func(resolve func([]T1)) {
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n := len(calls)
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results := make([]T1, n)
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futures := make([]Future[T1], n)
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wg := sync.WaitGroup{}
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wg.Add(n)
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for i, call := range calls {
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i := i
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f := call(&AsyncContext{
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Executor: Exec(),
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complete: func() {
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wg.Done()
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},
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})
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futures[i] = f
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}
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wg.Wait()
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for i, f := range futures {
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results[i] = f()
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}
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resolve(results)
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})
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}
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