mirror of
https://github.com/letic/terraform-provider-google.git
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961c878e0d
Switch to using Go modules. This migrates our vendor.json to use Go 1.11's modules system, and replaces the vendor folder with the output of go mod vendor. The vendored code should remain basically the same; I believe some tree shaking of packages and support scripts/licenses/READMEs/etc. happened. This also fixes Travis and our Makefile to no longer use govendor.
62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
/*
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*
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* Copyright 2018 gRPC authors.
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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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*/
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// Package grpcsync implements additional synchronization primitives built upon
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// the sync package.
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package grpcsync
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import (
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"sync"
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"sync/atomic"
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)
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// Event represents a one-time event that may occur in the future.
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type Event struct {
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fired int32
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c chan struct{}
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o sync.Once
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}
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// Fire causes e to complete. It is safe to call multiple times, and
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// concurrently. It returns true iff this call to Fire caused the signaling
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// channel returned by Done to close.
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func (e *Event) Fire() bool {
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ret := false
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e.o.Do(func() {
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atomic.StoreInt32(&e.fired, 1)
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close(e.c)
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ret = true
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})
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return ret
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}
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// Done returns a channel that will be closed when Fire is called.
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func (e *Event) Done() <-chan struct{} {
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return e.c
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}
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// HasFired returns true if Fire has been called.
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func (e *Event) HasFired() bool {
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return atomic.LoadInt32(&e.fired) == 1
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}
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// NewEvent returns a new, ready-to-use Event.
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func NewEvent() *Event {
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return &Event{c: make(chan struct{})}
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}
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