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The first 3 functions are helpers for running functions under the protection of a lock. The Mutex type is a wrapper over sync.Mutex with a Do method that runs a function under the protection of a lock. Updates #11038 Updates #cleanup Signed-off-by: Joe Tsai <joetsai@digital-static.net>
38 lines
762 B
Go
38 lines
762 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package syncs_test
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import (
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"encoding/hex"
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"log"
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"sync"
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"tailscale.com/syncs"
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)
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func ExampleLockFunc() {
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var nodesMu sync.Mutex
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var nodes []string
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syncs.LockFunc(&nodesMu, func() { nodes = append(nodes, "node123") })
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}
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func ExampleLockValue() {
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var nodesMu sync.Mutex
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var nodes []string
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n := syncs.LockValue(&nodesMu, func() int { return len(nodes) })
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log.Printf("there are %d nodes", n)
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}
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func ExampleLockValues() {
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var bufferMu sync.Mutex
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var buffer string
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b, err := syncs.LockValues(&bufferMu, func() ([]byte, error) {
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return hex.DecodeString(buffer)
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})
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if err != nil {
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log.Fatalf("Decode error: %v", err)
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}
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log.Printf("decoded %d bytes", len(b))
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}
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