f25951decb
Extra specs is an opaque valid JSON that can be set on a pool and which will be passed along to the provider as part of instance bootstrap params. This field is meant to allow operators to send extra configuration values to external or built-in providers. The extra specs is not interpreted or useful in any way to garm itself, but it may be useful to the provider which interacts with the IaaS. The extra specs are not meant to be used for secrets. Adding sensitive information to this field is highly discouraged. This field is meant as a means to add fine tuning knobs to the providers, on a per pool basis. Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
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//
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// Copyright 2022 The Go-MySQL-Driver Authors. All rights reserved.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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//go:build !go1.19
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// +build !go1.19
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package mysql
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import "sync/atomic"
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/******************************************************************************
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* Sync utils *
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******************************************************************************/
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// atomicBool is an implementation of atomic.Bool for older version of Go.
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// it is a wrapper around uint32 for usage as a boolean value with
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// atomic access.
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type atomicBool struct {
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_ noCopy
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value uint32
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}
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// Load returns whether the current boolean value is true
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func (ab *atomicBool) Load() bool {
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return atomic.LoadUint32(&ab.value) > 0
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}
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// Store sets the value of the bool regardless of the previous value
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func (ab *atomicBool) Store(value bool) {
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if value {
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atomic.StoreUint32(&ab.value, 1)
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} else {
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atomic.StoreUint32(&ab.value, 0)
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}
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}
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// Swap sets the value of the bool and returns the old value.
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func (ab *atomicBool) Swap(value bool) bool {
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if value {
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return atomic.SwapUint32(&ab.value, 1) > 0
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}
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return atomic.SwapUint32(&ab.value, 0) > 0
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}
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